U.S. PATENT AND TRADEMARK OFFICE
Information Products Division |
U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
Patents classified in a subclass may be accessed by either clicking on
the subclass number
preceding each subclass definition or on the
" " icon, below.
( please note that patents for some subclasses may not be available )
For classification search strategies, please refer to the
Classification Index
Explanation of Data web page.
(definitions have been obtained from the
Patents ASSIST CD-ROM which
is produced by the U.S. Patent and Trademark Office
Electronic Products Branch)
Class 392
ELECTRIC RESISTANCE HEATING DEVICES
Class Definition:
SUBCLASSES
Subclass:
301
Borehole type:
This subclass is indented under subclass 200. Subject matter
under Class 219, ... wherein the heating device comprising
an electrical resistance heating element is disclosed for use
in an elongated hole in the earth.
(1) Note. The patents classified here are for electrical
oil well heaters, per se. The combination of a heater and
sufficient well structure is in Class 166.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 45 for geos:graphical heat
exchange.
166, Wells, 57 and 272.1+ for well apparatus comprising a
heater in the well and see subclass 60 for the line between
Classes 166 and 219. See, also, (1) Note above.
175, Boring or Penetrating the Earth, 16 for an electrical
heating process or device for forming a hole in the earth by
directly applying heat to fluidize or comminute the material
forming the earth.
299, Mining or In Situ Disintegration of Hard Material, 3
for mining by in situ conversion of solid to fluid and which
includes heating means or steps and subclass 14 for process
of directly applying heat.
405, Hydraulic and Earth Engineering, subclass 131 for
temperature modification or control of earthen formation by
heating.
432, Heating, subclass 62 for geos:graphic or structural
installation.
Subclass:
302
With heat exchange fluid:
This subclass is indented under subclass 301. Subject matter
wherein the heating device comprises a fluid which is heated
by the heating element, and the heated fluid conveys its heat
to the well or bore.
SEE OR SEARCH THIS CLASS, SUBCLASS:
357 for intermediate heat absorber.
456 for heat exchange fluid line connected heated storage
tank.
496 for continuous fluid heater.
SEE OR SEARCH CLASS:
165, Heat Exchange, 104.11 for intermediate fluent heat
exchange material receiving and discharging heat.
Subclass:
303
With vapor generator:
This subclass is indented under subclass 301. Subject matter
wherein the heating device includes means for converting a
substance from a solid or liquid to a gaseous state.
SEE OR SEARCH THIS CLASS, SUBCLASS:
324 for fluid-in-circuit circuit type heater.
342 for vaporization by stored heat.
386 for vaporizer.
Subclass:
304
Heating element surrounding delivery pipe:
This subclass is indented under subclass 301. Subject matter
wherein the heating element encircles an outer surface of a
tube inserted into the well for conveying fluid into or out
of the well.
SEE OR SEARCH THIS CLASS, SUBCLASS:
468 for pipeline tracing fluid heater.
472 for flexible hose type fluid heater.
479 for externally heated line connected section for fluid
heater.
Subclass:
305
Suspended by cable in well:
This subclass is indented under subclass 301. Subject matter
wherein the heating device is supported from a well-head by a
flexible line-like member.
Subclass:
306
Plural separate heating devices:
This subclass is indented under subclass 301. Subject matter
wherein the borehole contains two or more heating devices
spaced from one another so that heating devices can heat
different portions of the borehole.
Subclass:
307
Combined with nonelectric heating means (e.g., gas, etc.):
This subclass is indented under subclass 200. Subject matter
under Class 219, ... wherein the heating device comprises an
electrical heating element in combination with at least one
other heat source of a nonelectrical nature, e.g., gas, etc.
(1) Note. The other heat source may be utilized either
simultaneously or alternately with the electrical device.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 601 for inductive heating
with diverse type heating; for microwave heating see subclass
679 with a diverse device and subclasses 680+ with
diverse-type heating.
432, Heating, subclass 94 for disparate heat sources or
fuels.
Subclass:
308
For heating liquid:
This subclass is indented under subclass 307. Subject matter
wherein the heating device is for heating a substance in that
state in which the particles move freely among themselves but
without tendency to separate.
SEE OR SEARCH THIS CLASS, SUBCLASS:
311 for heating liquid by fluid-in-circuit type heater.
441 for tank or container type liquid heater.
465 for continuous flow type fluid heater.
SEE OR SEARCH CLASS:
122, Liquid Heaters and Vaporizers, appropriate subclasses
for liquid heaters and vaporizers.
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclasses
344-363.1 for a liquid heater that may include a kettle, a
steam generator, stove pipe for use with a stove, a domestic
water heater or boiler (e.g., kitchen boiler, range boiler,
etc.) for use with a stove or furnace.
165, Heat Exchange, appropriate subclasses for heating liquid
by utilizing heat exchange.
237, Heating Systems, appropriate subclasses for heating
liquid by heating systems.
Subclass:
309
Hot plate:
This subclass is indented under subclass 307. Subject matter
wherein the heating device includes means on which a
removable vessel is to be heated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
467 for hot plate of a continuous flow type fluid heater.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, 279 for infusors.
126, Stoves and Furnaces, appropriate subclasses for hot
plate type.
219, Electric Heating, 443.1 for an exposed planar support
surface for material to be heated (e.g., hot plate, etc.).
Subclass:
310
Oven type:
This subclass is indented under subclass 307. Subject matter
wherein the heating device includes an enclosed chamber for
containing the material to be heated.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, 273 for oven.
219, Electric Heating, 678 for microwave heating, and
subclasses 391+ for electrically heated ovens.
Subclass:
311
Fluid-in-circuit type heater:
This subclass is indented under subclass 200. Subject matter
under Class 219, ... wherein the heating device includes an
electrically conductive fluid, e.g., water, heated by passing
an electric current directly through the conductive fluid
between two or more spaced conductors in electrical contact
with the fluid, whereby the conductive fluid itself acts as
an electric resistance element.
SEE OR SEARCH CLASS:
34, Drying and Gas or Vapor Contact With Solids, 245 for
material subjected to electrical energy.
99, Foods and Beverages: Apparatus, subclass 358 for
electrode type and subclass 451 for electric, radiant or
vibrational treating means.
122, Liquid Heaters and Vaporizers, using means other than
electricity to generate heat, subclasses 13.01-19.2 for a
stand boiler (e.g., water heater, etc.) that provides hot
water for domestic or household use (e.g., cooking, cleaning,
washing, bathing, space heating, etc.) that may be in other
than a house or home (e.g., apartment building, office
building, restaurant, laundry, recreational vehicle, etc.).
201, Distillation: Processes, Thermolytic, subclass 19 for
applying electric energy directly to material.
210, Liquid Purification or Separation, subclass 748 for
utilizing electrical or wave energy directly applied to
liquid.
219, Electric Heating, 600 for inductive heating, note
subclass 628 heat exchange by fluid or liquid; subclasses
678+ for microwave heating, note subclass 687 for a fluid
heater; and subclasses 764+ for capacitive dielectric
heating.
338, Electrical Resistors, 80 for liquid resistance
element.
373, Industrial Electric Heating Furnaces, 29 for joule
effect heating and subclasses 120+ for charge internal
resistance heating.
426, Foods or Edible Material: Processes, Compositions, and
Products, 234 for passage of electric current through food
material.
Subclass:
312
Method:
This subclass is indented under subclass 311. Subject matter
comprising processes for heating fluid by utilizing the
liquid itself as an electrical resistance and passing
electrical energy therethrough.
SEE OR SEARCH CLASS:
426, Foods or Edible Material: Processes, Compositions, and
Products, 237 for direct application of electrical or wave
energy to food material and, particularly, subclasses 244+
for involving dielectric heating or passage of electric
current through food material.
Subclass:
313
Portable:
This subclass is indented under subclass 311. Subject matter
wherein the fluid-in-circuit heater may be lifted or carried
bodily from place-to-place by hand.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 523 for housing, casing or
support insertable into material or support to be heated.
Subclass:
314
Continuous flow of fluid being heated:
This subclass is indented under subclass 311. Subject matter
wherein the fluid-in-circuit heater comprises a flow path for
the uninterrupted flow of fluid to be heated, an inlet
connected to a pressurized source of fluid and the electrodes
arranged with the fluid flow path for heating the fluid while
it uninterruptedly flows through the path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
396 for continuous flow line connected heater for
vaporizer.
465 for continuous flow type fluid heater.
Subclass:
315
With means to adjust current path between electrodes:
This subclass is indented under subclass 314. Subject matter
including means to vary the effective length or
cross-sectional area of the current flow between the
electrodes.
(1) Note. Generally the varying of the current path results
in varying the resistance of the path and consequently the
magnitude of the current.
SEE OR SEARCH THIS CLASS, SUBCLASS:
323 for reservoir or tank.
329 for line connected boiler.
334 for manually filled tank or container.
SEE OR SEARCH CLASS:
338, Electrical Resistors, 80 for mechanically variable or
adjustable liquid resistors.
Subclass:
316
Responsive to condition of fluid:
This subclass is indented under subclass 315. Subject matter
wherein the continuous fluid-in-circuit heater includes means
which senses and responds to the fluid to adjust the current
path between the electrodes.
Subclass:
317
Movable dielectric means:
This subclass is indented under subclass 315. Subject matter
wherein the current path is adjusted by a shiftable
electrical insulation means interposed between or surrounding
the electrodes whereby the passage of current between the
electrodes may be controlled.
SEE OR SEARCH THIS CLASS, SUBCLASS:
330 for adjusting current path between electrodes in line
connected boiler.
SEE OR SEARCH CLASS:
338, Electrical Resistors, subclass 82 for fluid resistance
devices with an adjustable insulating barrier between
electrodes.
Subclass:
318
Current control means:
This subclass is indented under subclass 314. Subject matter
wherein the fluid-in-circuit heater includes means to vary
the flow of electrical current between an external source of
current and the heating device.
SEE OR SEARCH CLASS:
219, Electric Heating, 507 for significant current
connection means for heating devices in general under the
class definition.
Subclass:
319
With discharge member for line or tank:
This subclass is indented under subclass 314. Subject matter
wherein the continuous fluid-in-circuit heater includes means
defining a passage or vent for permitting the fluid to flow
out of a supply line or receptacle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
473 for fluid heater with discharge member.
SEE OR SEARCH CLASS:
137, Fluid Handling, 334 for systems with heating or
cooling.
222, Dispensing, 146.1 for fluid dispensing with heating.
239, Fluid Sprinkling, Spraying, and Diffusing, 128 for
means for heating or cooling the system or fluid, and
particularly 133 for spray member having heater.
604, Surgery, subclass 113 and 114 for means for
electrically cooling or heating body.
Subclass:
320
Tube or pipe forms flow path:
This subclass is indented under subclass 314. Subject matter
wherein the flow path for the fluid to be heated comprises a
fluid conveying elongated tubular member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
397 for continuous flow line connected heater for
vaporizer.
480 for externally heated line connected section.
486 for heated line section with heating element internal of
flow path.
488 for pipe or tube forming flow path with heating element
internal of flow path.
Subclass:
321
Pipe forms at least one electrode:
This subclass is indented under subclass 320. Subject matter
wherein the pipe structure comprises at least one of the
electrodes.
Subclass:
322
With reservoir or tank:
This subclass is indented under subclass 311. Subject matter
wherein fluid-in-circuit heater includes a container for
heating a fixed quantity of fluid held therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
400 for vaporizer.
441 for container type liquid heater.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, 279 for infusers with a
liquid supply, subclass 358 for an electrode type cooking
device, subclasses 403+ for cooking devices of the boiler or
deep-fat fryer type, and subclass 451 for a device that
subjects food to an electric or high-frequency energy.
122, Liquid Heaters and Vaporizers, appropriate subclasses
for water heaters utilizing a boiler type tank, particularly
13.1 for stand boiler.
137, Fluid Handling, subclass 334 for systems utilizing
electric heating means and which may utilize tanks.
Subclass:
323
With means to adjust current path between electrodes:
This subclass is indented under subclass 322. Subject matter
including means to vary the effective length or
cross-sectional area of the current flow between the
electrodes.
(1) Note. Generally the varying of the current path by
subject matter of this subclass type results in varying the
resistance of the path and consequently the magnitude of the
current.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315 for continuous flow of fluid being heated.
329 for line connected boiler.
334 for manually filled tank or container.
SEE OR SEARCH CLASS:
338, Electrical Resistors, particularly 80 for mechanically
variable or adjustable liquid resistors.
Subclass:
324
Steam or vapor generator:
This subclass is indented under subclass 311. Subject matter
wherein the fluid-in-circuit heater includes means for
converting a fluid material to a vapor or gas state.
SEE OR SEARCH THIS CLASS, SUBCLASS:
303 for borehole type heater.
342 for vaporization by stored heat.
386 for vaporizer.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 524 and 535+ for
means for applying vapor in a bath.
38, Textiles: Ironing or Smoothing, subclass 69 and 77.1+
for steam iron.
43, Fishing, Trapping, and Vermin Destroying, 125 for
vaporizers in fumigating apparatus.
48, Gas: Heating and Illuminating, 89 and 103 for retort by
electric heater.
122, Liquid Heaters and Vaporizers, appropriate subclasses
for apparatus for generating vapors from liquids and further
utilizing the vapors thus generated, e.g., steam generator.
The structure found in this class is very similar to those
found in Class 219, especially the so-called flashers in 40
and wick in subclass 366.
123, Internal-Combustion Engines, 434 and 543+ for charge
forming devices involving vaporizers.
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclasses
20-20.2 for a cooking stove having an oven heated by steam
or hot water, subclasses 369-369.3 for a steam chamber for
food, or subclasses 377.1-392.1 for an open-top liquid
heating vessel that may include a lid having a confining,
directing or shielding feature for a liquid or steam used to
heat the vessel.
128, Surgery, 203.12 for vaporizers for medicaments.
132, Toilet, subclass 228 and 272 for hair shaping curls by
steam.
159, Concentrating Evaporators, appropriate subclasses for
devices for the concentration of solids held in solution or
suspension by evaporation.
196, Mineral Oils: Apparatus, subclass 104 for vaporizing
mineral oil, and subclasses 121 for electric heating.
201, Distillation: Processes, Thermolytic, subclass 19 for
applying electrical energy directly to material.
202, Distillation: Apparatus, appropriate subclasses for
distillation apparatus in general.
203, Distillation: Processes, Separatory, appropriate
subclasses for a process of distilling a liquid.
208, Mineral Oils: Processes and Products, classes 313 and
347+ for a process of distilling mineral oils.
223, Apparel Apparatus, subclass 51 for apparel apparatus by
heating and steaming.
237, Heating Systems, subclass 9, 16+, and 67 for heating
systems by steam.
239, Fluid Sprinkling, Spraying, and Diffusing, subclass 136
for sprays with means to generate a water vapor or steam.
252, Compositions, 67 for specific compositions useful for
vaporization purposes.
261, Gas and Liquid Contact Apparatus, 127 for external
supply or removal of heat and subclass 142 for heat produced
by electricity.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, subclass 305 for
fume generating apparatus and 292+ for sterilizers using
steam.
431, Combustion, subclass 208 and 258 for a fuel burner
having an electrically heated fuel vaporizer.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 1 for continuous gas or vapor phase colloid
system (e.g., smoke, fog, aerosol, cloud, mist) or agents for
such systems or making or stabilizing such systems or agents,
when generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
607, Surgery: Light, Thermal, and Electrical Application, 81
for bathing apparatus.
Subclass:
325
Line connected boiler:
This subclass is indented under subclass 324. Subject matter
wherein the fluid-in-circuit heater includes a vessel having
an inlet for receiving water from an external source of
supply and an outlet for discharging vapor from the vessel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
400 for vaporizing in-line connected tank.
449 for liquid heating container or tank.
Subclass:
326
Control of electrode immersion level:
This subclass is indented under subclass 325. Subject matter
wherein the boiler includes means to control the depth of the
electrode immersed in the water to be heated.
SEE OR SEARCH CLASS:
338, Electrical Resistors, 80 and 86 for level of liquid
element adjustable on electrodes.
Subclass:
327
By electrode current:
This subclass is indented under subclass 326. Subject matter
wherein the electrode immersion level is controlled by the
magnitude of current flow between the electrodes.
Subclass:
328
By pressure:
This subclass is indented under subclass 326. Subject matter
wherein the electrode immersion level is controlled by the
exertion of force of vapor in the boiler.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 496 for heaters in general
with current control responsive to the pressure of the medium
being heated.
338, Electrical Resistors, subclass 38 for fluid pressure
responsive to liquid element resistors.
Subclass:
329
With means to adjust current path between electrodes:
This subclass is indented under subclass 325. Subject matter
including means to vary the effective length or
cross-sectional area of the current flow between the
electrodes.
(1) Note. Generally the varying of the current path results
in varying the resistance of the path and consequently the
magnitude of the current.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315 for continuous flow of fluid being heated.
322 for reservoir or tank.
334 for manually filled tank or container.
SEE OR SEARCH CLASS:
323, Electricity: Power Supply or Regulation Systems,
subclass 296 for voltage or current regulating systems
utilizing liquid resistors.
338, Electrical Resistors, particularly 80 for mechanically
variable or adjustable liquid resistors.
373, Industrial Electric Heating Furnaces, subclass 29 and
120+ for electric furnace structure including adjustable
electrodes.
Subclass:
330
Movable dielectric means:
This subclass is indented under subclass 329. Subject matter
wherein the current path is adjusted by a shiftable
electrical insulation means interposed between or surrounding
the electrodes whereby the passage of current between the
electrodes may be controlled.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317 for continuous flow of fluid being heated.
SEE OR SEARCH CLASS:
338, Electrical Resistors, subclass 82 for fluid resistance
devices with an adjustable insulating barrier between
electrodes.
Subclass:
331
Electrode arrangement:
This subclass is indented under subclass 325. Subject matter
including details of the manner in which the conductors are
arranged to distribute the current in-line connected boiler.
SEE OR SEARCH CLASS:
373, Industrial Electric Heating Furnaces, 29 and 120+ for
electrode details of electric heating furnaces.
Subclass:
332
Water jet electrode:
This subclass is indented under subclass 331. Subject matter
wherein the electrode arrangement includes one electrode
which spurts out a stream of water directed at another
electrode.
Subclass:
333
Manually filled tank or container:
This subclass is indented under subclass 324. Subject matter
wherein the vapor generator includes a vessel with an opening
through which the vessel is filled by hand.
SEE OR SEARCH THIS CLASS, SUBCLASS:
403 for container with self-contained evaporant supply.
442 for manually pour-in liquid type tank.
SEE OR SEARCH CLASS:
68, Textiles: Fluid Treating Apparatus, subclass 223 for
washboards.
239, Fluid Sprinkling, Spraying, and Diffusing, 128 for
means for heating or cooling the system or fluid.
Subclass:
334
With means to adjust current path between electrodes:
This subclass is indented under subclass 333. Subject matter
including means to vary the effective length or
cross-sectional area of the current flow between the
electrodes.
(1) Note. Generally the varying of the current path results
in varying the resistance of the path and consequently the
magnitude of the current.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315 for continuous flow of fluid in fluid-in-circuit type
heater.
323 for reservoir or tank.
329 for line connected boiler.
SEE OR SEARCH CLASS:
323, Electricity: Power Supply or Regulation Systems,
subclass 296 for voltage or current regulating systems
utilizing liquid resistors.
338, Electrical Resistors, particularly 80 for mechanically
variable or adjustable liquid resistors.
373, Industrial Electric Heating Furnaces, 29 and 120+ for
electric furnace structure including adjustable electrodes.
Subclass:
335
With supply interlock means:
This subclass is indented under subclass 333. Subject matter
wherein the tank or container includes means for preventing
the flow of water into the container while the electrodes are
electrically energized.
SEE OR SEARCH CLASS:
200, Electricity: Circuit Makers and Breakers, subclass 50
for interlocking switch arrangements.
219, Electric Heating, subclass 437 for immersible heating
unit.
Subclass:
336
Separate electrode compartment:
This subclass is indented under subclass 333. Subject matter
wherein the tank or container includes a distinct section
containing the electrodes to isolate the electrodes from the
remainder of the tank or container.
SEE OR SEARCH THIS CLASS, SUBCLASS:
405 for separate heating chamber.
445 for immersible heating unit attaching or support means.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 524 and 535+ for
means for applying vapor in a bath.
219, Electric Heating, subclass 437 for immersible heating
unit.
338, Electrical Resistors, particularly 80 for mechanically
variable or adjustable liquid resistors.
Subclass:
337
Electrode compartment removable from tank:
This subclass is indented under subclass 336. Subject matter
wherein the separate electrode compartment may be separated
from the tank.
SEE OR SEARCH THIS CLASS, SUBCLASS:
406 for removable container with self- contained evaporant
supply.
Subclass:
338
Electrode details:
This subclass is indented under subclass 311. Subject matter
including details of the electrode structure of the
fluid-in-circuit type heater.
SEE OR SEARCH THIS CLASS, SUBCLASS:
331 for electrode arrangement for line connected tank.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, subclass 358 for
electrode type and subclass 451 for electric, radiant or
vibrational treating means.
204, Chemistry: Electric and Wave Energy, particularly 280
for electrodes for electrolytic cell.
338, Electrical Resistors, particularly 80 for mechanically
variable or adjustable liquid resistors.
373, Industrial Electric Heating Furnaces, 29 and 120+ for
significant electrode structure combined with furnaces.
Subclass:
339
With heat storage means:
This subclass is indented under subclass 200. Subject matter
under Class 219, ... wherein the heating device includes a
heat accumulating medium insulated against heat loss for
storing heat to be dissipated at a later time by a process of
heat transfer.
(1) Note. See search notes for other heat exchange means
and heat absorber without storage of heat to be dissipated at
a later time.
SEE OR SEARCH CLASS:
38, Textiles: Ironing or Smoothing, subclass 83 for
additive heat solid.
110, Furnaces, 322 for baffles or heat retainer structure.
119, Animal Husbandry, subclass 310 and 320+ for fireless
brooder and incubators.
122, Liquid Heaters and Vaporizers, subclass 33 for
accumulator and subclasses 367.1+ for heat transmitter.
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclass 105 for
a hot air furnace having an equalizer, subclass 207 for a
body warmer adapted to be heated by a block, subclass 273.5
for a domestic oven having a heat accumulator (e.g., fireless
cooker, etc.), subclass 375.1 for an open-top liquid heating
vessel that may include a lid having a heat accumulator,
subclass 400 for heat accumulator structure, subclasses
617-620 for a solar heat collector having a heat storage
mass, or subclass 910 for heat storage using a liquid.
132, Toilet, subclass 117 for removable heat storage means.
165, Heat Exchange, 4, 10, 104.11, 185, and 236 for heat
storage.
219, Electric Heating, subclass 258 for a heating device
combined with a sole plate-type pressure application means
(e.g., flatiron, etc.) having a heat storage, exchange, or
reflector, subclasses 399+ for an oven having heat energy
transfer, distribution, or accumulator means, subclass 430
for a wall- mounted radiant heater having a reflector,
subclass 439 for a nonmetallic heat radiating panel having a
heating element formed as coating on its surface, subclass
462 for a tank or container having an externally mounted
laterally disposed circulation-type heater, subclass 530 for
a heater-unit housing, casing, or support means (e.g., frame
and single sheet, etc.) including heat storage or transfer
means (vanes), or subclass 540 for a heating unit structure
including heat storage or transfer means (e.g., fins or
plate, etc.).
237, Heat Systems, subclass 44 and 75 for heat accumulator.
432, Heating, subclass 30 for process of utilizing a heat
storage means and subclasses 214+ for heat generating means
heats heat storage mass of solid material.
Subclass:
340
Method:
This subclass is indented under subclass 339. Subject matter
including processes for storing heat in the heat accumulating
medium or dissipating stored heat at a later time.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 236 for process of heat
exchange.
432, Heating, subclass 30 for process of utilizing a heat
storage means.
Subclass:
341
For fluid heating (e.g., gas or liquid, etc.):
This subclass is indented under subclass 339. Subject matter
wherein the heat storage means is used for heating a liquid
or gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
379 for concentrated heated air stream.
441 for tank or container type liquid heater.
465 for continuous fluid heater (not in stored medium).
SEE OR SEARCH CLASS:
34, Drying and Gas or Vapor Contact With Solids, appropriate
subclasses for apparatus employing heated gas.
122, Liquid Heaters and Vaporizers, subclass 35 for liquid
heaters and vaporizers having accumulator.
126, Stoves and Furnaces, subclass 400 and 617+ for heat
storage mass of solar heat collector.
134, Cleaning and Liquid Contact With Solids, subclass 105
for devices with heating, cooling or exchange means.
137, Fluid Handling, subclass 301 for hydrants with
protection against freezing which may be a heater and
subclasses 334+ for systems with heating or cooling.
138, Pipes and Tubular Conduits, subclasses 32-35 for
thawing and freeze protection.
159, Concentrating Evaporators, appropriate subclasses for
heating fluids.
165, Heat Exchange, appropriate subclasses for heating
fluids.
166, Wells, subclasses 57-62 for heating or heat insulating
means.
196, Mineral Oils: Apparatus, 104 for vaporizing devices
and subclasses 138+ for condensing devices utilizing heating
means.
202, Distillation: Apparatus, 81 for apparatus utilizing
heating means.
210, Liquid Purification or Separation, 175 for systems
employing heater or heat exchanger means.
Subclass:
342
For vaporization:
This subclass is indented under subclass 339. Subject matter
wherein the stored heat is used for converting a substance
from a solid or liquid to a gaseous state.
SEE OR SEARCH THIS CLASS, SUBCLASS:
324 for fluid-in-circuit type heater.
386 for vaporizer (not in storage medium).
SEE OR SEARCH CLASS:
38, Textiles: Ironing or Smoothing, subclass 69 and 77.1
for smoothing implements with moistening means.
43, Fishing, Trapping, and Vermin Destroying, subclass 129
for vaporizers in fumigating apparatus.
122, Liquid Heaters and Vaporizers, appropriate subclasses
for apparatus for generating vapors from liquids and further
utilizing the vapors thus generated, e.g., steam generator.
The structure found in this class is very similar to those
found in Class 219, especially the so-called flashers in 40
and wicks in subclass 366.
123, Internal-Combustion Engines, 543 for charge forming
devices involving vaporizers.
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclasses
369-369.3 for a liquid heating steam chamber for food.
128, Surgery, 203.12 for vaporizers for medicaments.
159, Concentrating Evaporators, appropriate subclasses for
devices for the concentration of solids held in solution or
suspension by evaporation.
196, Mineral Oils: Apparatus, appropriate subclasses for
apparatus for the distillation of mineral oils.
202, Distillation: Apparatus, appropriate subclasses for
distillation apparatus in general.
203, Distillation: Processes, Separatory, appropriate
subclasses for a process of distilling a liquid.
208, Mineral Oils: Processes and Products, Classes 313 and
347+ for a process of distilling mineral oil.
219, Electric Heating, subclass 401 for ovens with steam
generating means.
239, Fluid Sprinkling, Spraying, and Diffusing, subclass 136
for sprayers with means to generate a water vapor or steam.
252, Compositions, 67 for specific compositions useful for
vaporization purposes.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, subclass 305 for
fume generating apparatus and 292+ for sterilizers using
steam.
431, Combustion, subclass 208 for a fuel burner having an
electrically heated fuel vaporizer.
432, Heating, subclass 31 for heating of or by wall or
radiant surface.
Subclass:
343
For subsequent heating by radiation:
This subclass is indented under subclass 339. Subject matter
wherein the stored heat is used for transmitting heat energy
to the object or material by electro-magnetic waves within
the infrared range of the spectrum.
SEE OR SEARCH THIS CLASS, SUBCLASS:
375 for convection space heater with radiation.
391 for vaporizer using radiant heat source.
407 for radiant heater.
483 for continuous flow heater with radiation.
Subclass:
344
For subsequent heating by convection:
This subclass is indented under subclass 339. Subject matter
wherein the stored heat is used for transmitting heat energy
to the object or material by an air motion as a result of
difference in density and the action of gravity.
SEE OR SEARCH THIS CLASS, SUBCLASS:
347 for convection space heater.
SEE OR SEARCH CLASS:
34, Drying and Gas or Vapor Contact With Solids, appropriate
subclasses for convection type drying.
126, Stoves and Furnaces, 67 for hot air stove structure of
the convection type and subclasses 99+ for hot air furnace
structure.
165, Heat Exchange, appropriate subclasses for convection
heating.
237, Heating Systems, appropriate subclasses for heating
systems for rooms or spaces utilizing convective heating of
the fluid (air) in the rooms or space.
Subclass:
345
Means to control heating accumulating medium:
This subclass is indented under subclass 339. Subject matter
wherein the heat storage means includes means responsive to a
heat level in accumulating medium to regulate the amount of
the heat stored in the accumulating medium.
SEE OR SEARCH CLASS:
219, Electric Heating, 492 for automatic regulating or
controlling means.
Subclass:
346
Heat accumulating medium details:
This subclass is indented under subclass 339. Subject matter
including details of the structure or composition of the heat
accumulating medium.
SEE OR SEARCH CLASS:
110, Furnaces, 322 for baffle or heat retainer structure of
furnace.
126, Stoves and Furnaces, subclass 207 for heated block of
body, subclass 400 for heat accumulator structure, and
subclasses 674+ for absorber of solar heat collector.
Subclass:
347
Convection space heater:
This subclass is indented under subclass 200. Subject matter
under Class 219, ... wherein air heated by an electric
device is intended to heat an occupied space, e.g., a room by
the motion in a fluid resulting from a difference in density
and the action of gravity.
SEE OR SEARCH CLASS:
105, Railway Rolling Stock, subclass 451 for convection type
heating devices for railway cars.
126, Stoves and Furnaces, 58 for hot air stove structure of
the convection type; subclasses 99+ for hot air furnace
structure; subclasses 148+ for fire plate; subclasses 628+
for solar heat collector.
165, Heat Exchange, appropriate subclasses for convection
heating.
219, Electric Heating, subclass 449.1 for an exposed planar
support surface for material to be heated (e.g., hot plate,
etc.) by convection.
237, Heating Systems, 46, 50, and 70+ for heating systems for
rooms or spaces utilizing convective heating of the fluid
(air) in the rooms or space.
Subclass:
348
Artificial fire:
This subclass is indented under subclass 347. Subject matter
wherein the convection space heater includes means to give a
visual illusion or appearance of an actual fire.
SEE OR SEARCH CLASS:
40, Card, Picture, or Sign Exhibiting, subclass 427 for
simulated fireplace.
135, Tent, Canopy, Umbrella, or Cane, 91 for portable
shelter with heating, lighting or ventilating.
219, Electric Heating, subclass 220 for light means.
431, Combustion, subclass 125 for simulation feature.
Subclass:
349
Central heating type:
This subclass is indented under subclass 347. Subject matter
wherein the convection space heater is located at a central
location to convey heated air to different parts or rooms of
a building.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, 99 for hot air furnaces.
165, Heat Exchange, subclass 50 for room heat exchangers
with central fluid supply.
236, Automatic Temperature and Humidity Regulation, 10 for
hot air furnace.
237, Heating Systems, 50 for air heating system.
454, Ventilation, 228 and 330+ for ventilating a building.
Subclass:
350
With air delivery duct:
This subclass is indented under subclass 349. Subject matter
wherein the central heater includes a flue or channel for
conveying heated air to different parts or rooms of a
building.
SEE OR SEARCH THIS CLASS, SUBCLASS:
479 for externally heated line connected section.
485 for heated line section with heating element internal of
flow path.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, 99 for hot air furnaces.
165, Heat Exchange, 120 for impeller or conveyor moving
exchange material.
Subclass:
351
Floor furnace type:
This subclass is indented under subclass 347. Subject matter
wherein the convection heater is installed in a recess in the
floor of a room.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, subclass 116 for floor and wall
furnaces.
Subclass:
352
Baseboard type:
This subclass is indented under subclass 347. Subject matter
comprising a heating device having one long dimension with
means for mounting the device to a wall or floor at their
intersection such that its long dimension is parallel to the
intersection.
SEE OR SEARCH CLASS:
165, Heat Exchange, 53 for related to wall, floor or ceiling
structure of a chamber.
237, Heating systems, subclass 79 for radiator with
shields.
454, Ventilating, 287 for baseboard type.
Subclass:
353
With baffle:
This subclass is indented under subclass 352. Subject matter
wherein the baseboard heater includes a plate or wall for
directing heated air in a desired flow pattern.
SEE OR SEARCH THIS CLASS, SUBCLASS:
374 for portable convection spaced heater.
383 for portable heated air stream.
Subclass:
354
With intermediate heat absorber:
This subclass is indented under subclass 347. Subject matter
wherein the convection space heater includes an accumulator
placed between the heater and the space for collecting heat
from the heater for subsequent transmission to the air being
heated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
302 for heat exchange fluid in borehole type heater.
339 for heat storage means.
377 for heat exchange fluid in convection space heater.
456 for heat exchange fluid in tank or container type liquid
heater.
496 for heat exchange fluid in continuous flow fluid
heater.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, subclass 101 for host air furnace
with boiler.
165, Heat Exchange, 104.11 for intermediate heating by
convection.
236, Automatic Temperature and Humidity Regulation, subclass
22 and 36+ for radiator type.
237, Heating Systems, subclasses 16-18 and 70+ for radiator
and boiler.
252, Compositions, subclass 67 for vaporization, or
expansion, refrigeration or heat or energy exchange.
Subclass:
355
Heated by radiant source:
This subclass is indented under subclass 354. Subject matter
wherein the heat absorber is heated by energy in the form of
electromagnetic waves within the infrared range of the
spectrum.
SEE OR SEARCH THIS CLASS, SUBCLASS:
391 for vaporizer using radiant heat source.
407 for radiant heater.
460 for liquid heater producing radiation.
483 for fluid heater producing radiation.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, 638 for thermosiphonic
circulation.
Subclass:
356
With fan blower:
This subclass is indented under subclass 355. Subject matter
wherein the air to be heated is directed to the heat absorber
by a rotating fan.
SEE OR SEARCH THIS CLASS, SUBCLASS:
358 for guiding heated air by heat exchange fluid.
360 for forced air type.
Subclass:
357
With fluid heat absorber:
This subclass is indented under subclass 354. Subject matter
wherein the intermediate heat absorber includes a liquid or
gas for absorbing the heat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
302 for heat exchange fluid used in a borehole.
339 for convection space heating in heat storage.
377 for convection combined with radiation.
456 for heat exchange fluid line connecting heated storage
tank.
496 for continuous fluid heater.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, subclass 101 for hot-air furnace
combined with boiler.
165, Heat Exchange, subclass 104.11 for intermediate fluent
heat exchange material receiving and discharging heat.
237, Heating Systems, subclasses 16-18 and 70+ for radiator
and boiler.
Subclass:
358
By fan blower:
This subclass is indented under subclass 357. Subject matter
wherein the air to be heated is directed to the heat absorber
by a rotating fan.
SEE OR SEARCH THIS CLASS, SUBCLASS:
356 for guiding heated air by radiant source.
360 for forced air type.
Subclass:
359
Wall mounted:
This subclass is indented under subclass 357. Subject matter
wherein the heating device is mounted on a continuous side
structure of a room.
SEE OR SEARCH THIS CLASS, SUBCLASS:
352 for baseboard type heater.
363 for forced air type.
370 for convection space heater without forced air.
381 for concentrated heated air stream.
430 for radiant heater with reflector.
436 for radiant extended surface heater.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, subclass 116 for floor or wall
furnace.
165, Heat Exchange, 53 for related wall structure of a
chamber.
Subclass:
360
Forced air type:
This subclass is indented under subclass 347. Subject matter
wherein the means for guiding air to be heated employs a
power driven fan, blower, or pump to force the air into
contact with the heating element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
379 for concentrated heated air stream.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, subclass 103 and 110 for hot air
furnace with compressed air.
137, Fluid Handling, subclass 340 for systems including
apparatus in which the fluid in system circulates in heat
exchange relationship.
165, Heat Exchange, 120 for impeller or conveyor moving
exchange material.
219, Electric Heating, subclass 400 for heat energy transfer
by convection.
236, Automatic Temperature and Humidity Regulation, 10 for
hot air furnaces.
237, Heating Systems, 50 for hot air heating systems.
415, Rotary Kinetic Fluid Motors or Pumps, appropriate
subclasses for fluid pump.
416, Fluid Reaction Surfaces (i.e., Impeller), appropriate
subclasses for impeller.
417, Pumps, appropriate subclasses for pumps.
Subclass:
361
Heating attachment for fan:
This subclass is indented under subclass 360. Subject matter
wherein the forced air heater includes a heating unit, having
an electrical resistance element, attachable to a
self-supported fan for heating air circulated by the fan.
Subclass:
362
Fan with heated blades:
This subclass is indented under subclass 360. Subject matter
wherein the heating elements for heating the air are mounted
on or disposed in the vanes of the fan.
SEE OR SEARCH CLASS:
415, Rotary Kinetic Fluid Motors or Pumps, subclass 114, 116,
and 175-179 for passage in blade, vane, shaft or rotary
distributor communication with working fluids.
416, Fluid Reaction Surfaces (i.e., Impellers), subclass 95
for heating, cooling or thermal insulation means.
Subclass:
363
Wall mounted:
This subclass is indented under subclass 360. Subject matter
wherein the forced air heater is readily mounted on a
continuous side structure of a room.
SEE OR SEARCH THIS CLASS, SUBCLASS:
359 for convection heater with heat exchange fluid.
370 for convection space heater.
381 for concentrated heated air stream.
430 for radiant heater with reflector.
436 for radiant extended surface heater.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, subclass 116 for floor or wall
furnace.
165, Heat Exchange, 53 for related wall structure of a
chamber.
Subclass:
364
Ceiling mounted:
This subclass is indented under subclass 360. Subject matter
wherein the forced air heater is readily mounted to the
overhead covering of a room.
SEE OR SEARCH THIS CLASS, SUBCLASS:
436 for heat radiating panel.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, subclass 116 for floor or wall
furnace.
165, Heat Exchange, 53 for related wall structure of a
chamber.
454, Ventilation, 292 for ceiling type diffuser and subclass
354 for ceiling or wall mounted.
Subclass:
365
Portable:
This subclass is indented under subclass 360. Subject matter
wherein the forced air heater may be lifted or carried bodily
from place to place by hand.
SEE OR SEARCH THIS CLASS, SUBCLASS:
373 for portable convection space heater.
383 for portable heated air stream.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, 67 and 110 for hot air stoves and
furnaces.
219, Electric Heating, subclass 533 for portable heater unit
with housing, casing or support means.
Subclass:
366
With fan position adjusting means:
This subclass is indented under subclass 365. Subject matter
wherein the portable forced air type heater includes means
for selectively varying the position of the fan with respect
to a base or support structure.
Subclass:
367
Multi-direction air outlet:
This subclass is indented under subclass 365. Subject matter
wherein the portable heater includes a passage or vent for
distributing heated air in two or more different directions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
440 for radiant heater.
SEE OR SEARCH CLASS:
165, Heat Exchange, 126 for plural outlets.
Subclass:
368
With baffle:
This subclass is indented under subclass 365. Subject matter
wherein the portable heater includes a plate or wall for
directing heated air in a desired air flow pattern.
SEE OR SEARCH THIS CLASS, SUBCLASS:
353 for portable baseboard type convection space heater.
374 for portable convection space heater.
388 for portable heated air stream.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, 67 for hot air and subclass 99 for
hot air furnace with air baffles.
165, Heat Exchange, 120 for conveyor moving exchange
material.
Subclass:
369
Counterflow:
This subclass is indented under subclass 368. Subject matter
wherein the baffle causes an airflow through the housing to
reverse its direction of flow at least once when inflowing
from an inlet to an outlet.
Subclass:
370
Wall mounted:
This subclass is indented under subclass 347. Subject matter
wherein the convection space heater is readily mounted on a
continuous side structure of a room.
SEE OR SEARCH THIS CLASS, SUBCLASS:
359 for convection heater with heat exchange fluid.
363 for forced air type heater.
381 for concentrated heated air stream.
430 for radiant heater with reflector.
436 for radiant extended surface heater.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, subclass 116 for floor or wall
furnace.
165, Heat Exchange, 53 for related wall structure of a
chamber.
454, Ventilation, 276 for wall type diffuser and subclass
354 for ceiling or wall mounted.
Subclass:
371
In wall cavity:
This subclass is indented under subclass 370. Subject matter
wherein the convection space heating device is located within
a recess or hollow space formed in the wall of a room.
Subclass:
372
Mounted in or on window or door:
This subclass is indented under subclass 347. Subject matter
wherein the convection heater is mounted in or on an opening
in the wall of a building for the admission of light and air,
or an opening in a wall to permit entrance into or exit from
a room, building or other enclosure.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, 53 for related wall structure.
219, Electric Heating, subclass 203 for windshield or window
of a vehicle and subclass 213 for static structure.
454, Ventilation, for subclass 195 for door and subclasses
196+ for window.
Subclass:
373
Portable:
This subclass is indented under subclass 347. Subject matter
wherein the convection space heater may be lifted or carried
bodily from place-to-place by hand.
SEE OR SEARCH THIS CLASS, SUBCLASS:
365 for portable forced air type heater.
383 for portable heated air stream.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, 67 and 110 for hot air stoves and
furnaces.
219, Electric Heating, subclass 533 for portable heater unit
with housing, casing or support means.
Subclass:
374
With baffle:
This subclass is indented under subclass 373. Subject matter
wherein the portable heater includes a plate or wall for
directing heated air in a desired air flow pattern.
SEE OR SEARCH THIS CLASS, SUBCLASS:
353 for baseboard type convection space heater.
368 for portable convection space heater.
383 for portable heated air stream.
Subclass:
375
Combined with radiation:
This subclass is indented under subclass 347. Subject matter
wherein the heated air in a room is resulted in combination
with electromagnetic waves within the infrared range of the
spectrum.
(1) Note. An example of the apparatus to be found here
comprises a device transmitting heat energy by convection and
direct radiation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
343 for using stored heat for radiation.
344 for using stored heat for convection.
407 for radiant heater.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, 91 for electric radiant.
165, Heat Exchange, subclass 49 for radiant panel; subclass
133 for polished surface; subclasses 148+ for radiator core
type; subclasses 168+ for panel or wall structure; and
subclass 185 for heat transmitter.
236, Automatic Temperature and Humidity Regulation, 36 for
heating radiator.
237, Heating Systems, 16 and 70+ for heat radiator.
Subclass:
376
With reflector:
This subclass is indented under subclass 375. Subject matter
including opaque mirror-like means which redirects incident
infrared radiation back into the medium from which it came.
SEE OR SEARCH THIS CLASS, SUBCLASS:
422 for radiant heater.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 133 for coated, roughened or
polished surface.
359, Optics: Systems (Including Communication) and Elements,
636 for mirror.
Subclass:
377
With heat exchange fluid:
This subclass is indented under subclass 375. Subject matter
including a fluid which is heated by the resistance heating
element for subsequent transmission to the space to be
heated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
344 for convection space heating in heat storage.
357 for intermediate heat absorber.
456 for heat exchange fluid line connected heated storage
tank.
496 for continuous fluid heater.
SEE OR SEARCH CLASS:
165, Heat Exchange, 104.11 for intermediate fluent heat
exchange.
236, Automatic Temperature and Humidity Regulation, 36 for
heating radiators.
237, Heating Systems, 16 for combined radiator and boiler
and subclasses 70+ for heat radiators.
252, Compositions, subclass 67 for vaporization, or
expansion, refrigeration or heat or energy exchange.
Subclass:
378
In plural sections:
This subclass is indented under subclass 377. Subject matter
having two or more compartments for accommodating the heat
exchange fluid.
SEE OR SEARCH CLASS:
165, Heat Exchange, 172 for side-by-side tubular structure
or tube sections.
237, Heating Systems, 16 for combined radiator and boiler
and subclasses 70+ for heat radiator.
Subclass:
379
Concentrated heated air stream (i.e., blast):
This subclass is indented under subclass 200. Subject matter
under Class 219, ... wherein the heating device includes
means for blowing air through a passage in which an
electrical resistance heating element is mounted for
producing an intensified or a jet-like flow of heated air.
SEE OR SEARCH THIS CLASS, SUBCLASS:
360 for forced air type.
473 for fluid heater carried on discharge member.
478 for fluid conveying tube or pipe comprising resistance
heating element.
479 for externally heated line connected section.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 535 for means for
applying hot air directly to body of user.
5, Beds, subclass 423 for means to force air.
34, Drying and Gas or Vapor Contact With Solids, 94 for hair
on head and subclasses 241+ for gas or vapor distributing and
applying agitators.
132, Toilets, 112 for orifice for applying fluent material
and subclasses for heater, fluid supply, or surrounding fluid
housing.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
subclass 497 for gas, vapor or flame contact means for
work.
165, Heat Exchange, 120 for impeller or conveyor moving
exchange material.
Subclass:
380
For drying body part:
This subclass is indented under subclass 379. Subject matter
wherein the concentrated heated air stream device is
disclosed for drying a part of human body.
SEE OR SEARCH THIS CLASS, SUBCLASS:
360 for forced air type.
Subclass:
381
Wall mounted:
This subclass is indented under subclass 380. Subject matter
wherein the body drying heater is readily mounted on a
continuous side structure of a room.
SEE OR SEARCH THIS CLASS, SUBCLASS:
359 for convection heater with heat exchange fluid.
363 for forced air type heater.
370 for convection space heater.
430 for radiant heater with reflector.
436 for radiant extended surface heater.
Subclass:
382
With support:
This subclass is indented under subclass 379. Subject matter
wherein the concentrated heated air stream heater includes
means to position an article to be heated in the path of the
heated air stream.
SEE OR SEARCH CLASS:
219, Electric Heating, 451.1 for an exposed planar support
surface for material to be heated (e.g., hot plate, etc.)
having support for a heating unit.
Subclass:
383
Portable:
This subclass is indented under subclass 379. Subject matter
wherein the concentrated heated air stream heater may be
lifted or carried bodily from place-to-place by hand.
SEE OR SEARCH THIS CLASS, SUBCLASS:
373 for portable convection space heater.
365 for portable forced air type heater.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 227 for electrically hand
manipulative tools or instruments and subclass 533 for
portable heater unit with housing, casing or support means.
Subclass:
384
With handle:
This subclass is indented under subclass 383. Subject matter
wherein the heating device includes means attached to the
heating device to be gripped by the hand when the device is
lifted or carried.
SEE OR SEARCH THIS CLASS, SUBCLASS:
404 for hand-held container.
476 for hand-held discharge member.
Subclass:
385
Pistol-grip type:
This subclass is indented under subclass 384. Subject matter
wherein the handle is L-shaped and attached to the heating
device at only one end.
SEE OR SEARCH CLASS:
16, Miscellaneous Hardware, 110 for handle.
Subclass:
386
Vaporizer:
This subclass is indented under subclass 200. Subject matter
under Class 219, ... wherein the heating device is disclosed
for use in converting a substance from a solid or liquid to a
gaseous state.
SEE OR SEARCH THIS CLASS, SUBCLASS:
324 for fluid-in-circuit type heater.
342 for vaporization with heat storage means.
SEE OR SEARCH CLASS:
38, Textiles: Ironing or Smoothing, 77.1 for moistening
means.
43, Fishing, Trapping, and Vermin Destroying, 125 for
vaporizers in fumigating apparatus.
62, Refrigeration, 50.1 for liquified gas transferred as
liquid.
68, Textiles: Fluid Treating Apparatus, subclass 222 for
steamers.
118, Coating Apparatus, 726 for crucible.
122, Liquid Heaters and Vaporizers, appropriate subclasses
for apparatus for generating vapors from liquids and further
utilizing the vapors thus generated, e.g., steam generator.
The structure found in this class is very similar to those
found in Class 219, especially the so-called flashers in 40
and wicks in subclass 366 which do not disclose an electrical
heating means.
123, Internal-Combustion Engines, 543 for charge forming
devices involving vaporizers.
128, Surgery, 203.12 for vaporizers for medicaments.
132, Toilet, 227 for heater, fluid supply, or surrounding
fluid housing and subclasses 272+ for vapor reservoir.
159, Concentrating Evaporators, appropriate subclasses for
devices for the concentration of solids held in solution or
suspension by evaporation.
196, Mineral Oils: Apparatus, 104 for apparatus, for the
distillation of mineral oils and, especially, subclass 121
for electric heating.
202, Distillation: Apparatus, appropriate subclasses for
distillation apparatus in general.
203, Distillation: Processes, Separatory, appropriate
subclasses for a process of distilling a liquid.
208, Mineral Oils: Processes and Products, subclass 313 and
347+ for a process of distilling mineral oil.
210, Liquid Purification or Separation, 175 for heater or
heat exchange.
219, Electric Heating, subclass 401 for ovens with steam
generating means.
223, Apparel Apparatus, subclass 51 for heating and
steaming.
236, Automatic Temperature and Humidity Regulation, subclass
44 for humidity control.
237, Heating Systems, subclass 9 for steam and subclasses
16+ for combined radiator and boiler.
239, Fluid Sprinkling, Spraying, and Diffusing, 34 for
diffusers; subclasses 128+ for sprayers with means to
generate a water vapor or steam; and subclasses 136+ for
vapor generator.
252, Compositions, 67 for specific compositions useful for
vaporization purposes.
261, Gas and Liquid Contact Apparatus, 127 for external
supply or removal of heat and subclass 141 for electric
heater.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, subclass 305 for
fume generating apparatus and 292+ for sterilizers using
steam.
431, Combustion, 13, 208, and 258 for a fuel burner having an
electrically heated fuel vaporizer.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 1 for continuous gas or vapor phase colloid
system (e.g., smoke, fog, aerosol, cloud, mist) or agents for
such systems or making or stabilizing such systems or agents,
when generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
607, Surgery: Light, Thermal, and Electrical Application, 81
for bathing apparatus and subclasses 96+ for thermal
applicators.
Subclass:
387
Method:
This subclass is indented under subclass 386. Subject matter
including processes for converting a substance from a solid
or liquid to a gaseous state.
SEE OR SEARCH CLASS:
134, Cleaning and Liquid Contact With Solids, 12 for process
by distilling, or liquefying vapors of, used agent.
165, Heat Exchange, 200 for heat exchange process.
208, Mineral Oils: Processes and Products, 308 for
fractionation.
239, Fluid Sprinkling, Spraying, and Diffusing, 1 for
processes of distributing fluid material on or over an area
or into the air.
431, Combustion, subclass 13 for processes of heating or
heater operation.
432, Heating, subclass 13 for process of heating or heater
operation.
Subclass:
388
For metal vapor deposition:
This subclass is indented under subclass 386. Subject matter
wherein the heating device is disclosed for vaporizing a
metallic substance to be deposited on a substrate.
(1) Note. The terms "evaporant", "coating material" and
"film-forming material" are synonymous in this art.
SEE OR SEARCH CLASS:
118, Coating Apparatus, 715 for gas or deposition.
Subclass:
389
With crucible:
This subclass is indented under subclass 388. Subject matter
wherein the vaporizer includes an evaporation vessel for
containing the metallic substance to be evaporated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
403 for container with self-contained evaporant supply.
SEE OR SEARCH CLASS:
118, Coating Apparatus, 726 for crucible or evaporator
structure.
432, Heating, 262 for crucible.
Subclass:
390
With disposable evaporant cartridge or container:
This subclass is indented under subclass 386. Subject matter
wherein the vaporizer includes a replaceable case or shell or
vessel for containing the substance to be evaporated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
403 for container with self-contained evaporant supply.
470 for continuous fluid heater.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 46 for flexible envelope or
cover type.
219, Electric Heating, subclass 214 for vending, dispensing
or display device.
222, Dispensing, 146.1 for heating or cooling means.
604, Surgery, 113 for cooling or heating body, treating or
collected material or device.
Subclass:
391
By radiant heat source:
This subclass is indented under subclass 386. Subject matter
wherein the substance is converted into gaseous form by heat
energy in the form of electromagnetic waves within the
infrared range of the spectrum.
SEE OR SEARCH THIS CLASS, SUBCLASS:
347 for convection space heating.
407 for radiant heater.
460 for liquid heater producing radiation.
483 for fluid heater producing radiation.
SEE OR SEARCH CLASS:
159, Concentrating Evaporators, Digest 6 for infrared.
250, Radiant Energy, 493.1 for infrared radiation generators
not provided for elsewhere.
431, Combustion, subclass 31 for scavenging or purging
period started by combustion demand.
Subclass:
392
Wall mounted:
This subclass is indented under subclass 386. Subject matter
wherein the vaporizer may be mounted on a continuous side
structure of a room.
SEE OR SEARCH THIS CLASS, SUBCLASS:
359 for convection heater with heat exchange.
363 for forced air type heater.
370 for convection space heater.
381 for concentrated heated air stream heater.
430 for radiant heater with reflector.
436 for radiant extended surface heater fluid.
SEE OR SEARCH CLASS:
165, Heat Exchange, 53 for related wall, floor or ceiling
structure of a chamber.
Subclass:
393
By light bulb heat source:
This subclass is indented under subclass 386. Subject matter
wherein the substance is converted to the vapor state by the
heat generated from an incandescent filament enclosed in a
sealed, transparent envelope.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 220 for light means and
subclass 552 for heating element structure.
313, Electric Lamp and Discharge Devices, appropriate
subclasses for electric lamp.
338, Electrical Resistors, 234 for gaseous or vacuum spacing
between element and casing or housing.
362, Illumination, subclass 101 for liquid container.
Subclass:
394
Liquid evaporant (e.g., water, etc.):
This subclass is indented under subclass 386. Subject matter
wherein the substance to be evaporated is a liquid (e.g.,
water, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
324 for steam or vapor generator.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 524 for vapor or
heat in bath and subclasses 535+ for means for applying vapor
or hot air directly to body of user.
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclasses
20-20.2 for a cooking stove having an oven heated by steam
or hot water, subclass 113 for a hot air furnace having an
air moistening means, subclass 350.2 for a fluid fuel burner
other than a top-accessible liquid heating vessel vaporizer
or humidifier or subclasses 369-369.3 for a liquid heating
steam chamber for food.
237, Heating Systems, subclass 78 for air moistener.
Subclass:
395
With wick:
This subclass is indented under subclass 394. Subject matter
wherein the liquid to be evaporated is transferred from a
reservoir to the heating element by a porous or absorbent pad
or fibrous matter woven into a bundle.
SEE OR SEARCH CLASS:
239, Fluid Sprinkling, Spraying, and Diffusing, 34 for slow
diffusers and, particularly, subclasses 44+ for wicks.
261, Gas and Liquid Contact Apparatus, 94 for porous mass
and subclasses 100+ for porous sheets.
432, Heating, 120 for work chamber having heating means.
Subclass:
396
In continuous flow line connected heater:
This subclass is indented under subclass 394. Subject matter
wherein the liquid evaporant is contained in means defining a
flow path for uninterrupted flow of the liquid from an inlet
connected to a pressurized source to a vapor outlet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
465 for continuous flow type fluid heater.
SEE OR SEARCH CLASS:
122, Liquid Heaters and Vaporizers, appropriate subclasses
for liquid heaters of the continuous flow type.
123, Internal-Combustion Engines, 543 for continuous flow
heater associated with internal-combustion engine.
128, Surgery, subclass 203.17 for electrically heated means
for producing water vapor.
196, Mineral Oils: Apparatus, 104 vaporization.
219, Electric Heating, 600 for inductive heating, subclasses
678+ for microwave heating, and subclasses 764+ for
capacitive dielectric heating.
239, Fluid Sprinkling, Spraying, and Diffusing, 128 for the
system fluid with heating or cooling, and, particularly,
subclasses 136+ for vapor generation.
431, Combustion, subclass 208 for electrically heated
section.
Subclass:
397
Pipe or tube forms flow path:
This subclass is indented under subclass 396. Subject matter
wherein the flow path for the liquid to be evaporated is a
liquid-conveying long passage or tube.
SEE OR SEARCH THIS CLASS, SUBCLASS:
320 for pipe or tube section forming flow passage with
fluid-in-circuit.
478 for fluid conveying tube or pipe.
480 for pipe or tube forming flow path in continuous fluid
heater.
488 for pipe or tube forming flow path in with heating
elements internal of flow path.
Subclass:
398
With internal heating element:
This subclass is indented under subclass 397. Subject matter
wherein an electrical resistance heating element is located
within the pipe or tube.
SEE OR SEARCH THIS CLASS, SUBCLASS:
320 for tube or pipe forming flow path.
485 for heated line section with heating element internal of
flow path.
Subclass:
399
Flash chamber:
This subclass is indented under subclass 394. Subject matter
wherein the heating device includes an enclosed compartment
in which the evaporant is instantly vaporized upon injection
therein.
SEE OR SEARCH CLASS:
38, Textiles: Ironing or Smoothing, subclass 77.83 for
additional chamber for generating steam.
122, Liquid Heaters and Vaporizers, subclass 40 for
flasher.
159, Concentrating Evaporators, subclass 3 for spray type
evaporators.
203, Distillation: Processes, Separatory, subclass 84 for
spraying of distilland into vaporization zone and subclass 90
for returning distillation product to a previous distillation
zone.
208, Mineral Oils: Processes and Products, subclass 361 for
flash vaporization.
219, Electric Heating, 222 for hair heaters.
239, Fluid Sprinkling, Spraying, and Diffusing, 128 for
heating or cooling means for the system or system fluid.
Subclass:
400
In-line connected closed tank (i.e., pressurized):
This subclass is indented under subclass 394. Subject matter
wherein the liquid is contained in a vessel connected to a
source of liquid supply, and from which the the vapor may be
drawn off from an outlet or draw off pipe, and in which
pressures above atmosphere may be maintained.
SEE OR SEARCH THIS CLASS, SUBCLASS:
325 for line connected boiler.
449 for fluid heating container or tank.
SEE OR SEARCH CLASS:
159, Concentrating Evaporators, subclass 22 for closed
evaporating chambers.
Subclass:
401
With internal heating element:
This subclass is indented under subclass 441. Subject matter
wherein the closed tank includes an electrical resistance
heating element which is supported within the vessel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
451 for line connected tank.
497 for details of immersion heater.
Subclass:
402
In-line connected open tank or container (i.e.,
nonpressurized):
This subclass is indented under subclass 394. Subject matter
wherein the liquid is contained in a vessel connected to a
source of liquid supply, and from which the vapor may be
drawn off from an outlet or draw off pipe, and in which
pressures equal to atmosphere may be maintained.
SEE OR SEARCH THIS CLASS, SUBCLASS:
325 for line connected boiler.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, subclass 113 for air moisteners.
159, Concentrating Evaporators 32 for open pans.
236, Automatic Temperature and Humidity Regulation, subclass
44 for humidity control.
237, Heating Systems, subclass 78 for air moistener.
261, Gas and Liquid Contact Apparatus, 127 for external
supply or removal of heat; subclasses 141+ for heat producer;
digest 15 for duct humidifier.
Subclass:
403
Container with self-contained evaporant supply:
This subclass is indented under subclass 394. Subject matter
wherein the liquid evaporant is bodily contained within the
vaporizing device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
333 for manually filled tank or container.
444 for portable tank or container.
SEE OR SEARCH CLASS:
237, Heating Systems, subclass 78 for air moisteners.
Subclass:
404
Hand-held:
This subclass is indented under subclass 403. Subject matter
wherein the container is to be held in the hand during use.
SEE OR SEARCH CLASS:
38, Textiles: Ironing or Smoothing, subclass 77.1 for
moistening means.
43, Fishing, Trapping, and Vermin Destroying, 125 for
fumigators.
68, Textiles: Fluid Treating Apparatus, subclass 222 for
steamers.
607, Surgery: Light, Thermal, and Electrical Application,
subclass 96 for thermal applicators.
Subclass:
405
With separate heating chamber:
This subclass is indented under subclass 403. Subject matter
wherein the container is subdivided into two communicating
chambers, the heating device being disposed in one chamber
and the evaporant in the other chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
336 for separate electrode compartment.
Subclass:
406
Removable:
This subclass is indented under subclass 405. Subject matter
wherein the heating chamber may be readily attached to or
detached from the container.
SEE OR SEARCH THIS CLASS, SUBCLASS:
337 for electrode compartment removable from tank.
Subclass:
407
Radiant heater:
This subclass is indented under subclass 200. Subject matter
under Class 219, ... wherein the heating device includes
means which emits heat in the form of electromagnetic waves
within the infrared range of the spectrum.
SEE OR SEARCH THIS CLASS, SUBCLASS:
343 for using stored heat for radiation.
375 for convection space heater with radiation.
SEE OR SEARCH CLASS:
34, Drying and Gas or Vapor Contact With Solids, 524 for
apparatus which may utilize radiant heat.
118, Coating Apparatus, 620 for means to apply electrical or
radiant energy to work.
119, Animal Husbandry, 301 for brooders combined with
incubators, and subclasses 318+ for electrical incubators
utilizing radiant heating.
126, Stoves and Furnaces, 91 for radiation type and 569+ for
solar heat collector.
165, Heat Exchange, subclass 49 for radiant building panels
and subclass 133 for coated, roughened or polished surface.
236, Automatic Temperature and Humidity Regulation, 36 for
systems utilizing heating radiators.
237, Heating Systems, 16 for combined heat radiator and
boiler and subclasses 70+ for heat radiators in general.
250, Radiant Energy, 493.1 for infrared radiation generators
not provided for elsewhere.
313, Electric Lamp and Discharge Devices, appropriate
subclasses for radiant type.
427, Coating Processes, subclass 521 for coating processes
utilizing radiation as a heat source to polymerize an applied
coating, subclass 545, for coating processes utilizing
resistance heat in the pretreatment of a substrate or the
post-treatment of a coated substrate; subclasses 592+ for
coating processes employing resistance heat during the
deposition of a coating on a substrate.
607, Surgery: Light, Thermal, and Electrical Application,
subclass 96 for thermal applicators which may utilize
radiant energy.
Subclass:
408
With filter or diffuser for radiant energy:
This subclass is indented under subclass 407. Subject matter
wherein the radiant heater includes means for attenuating
certain wavelengths while passing others with relatively no
change, or means for scattering or dispersing radiation
within selected wavelengths.
SEE OR SEARCH CLASS:
313, Electric Lamp and Discharge Devices, 110 for optical or
special ray transmissive envelope.
362, Illumination, subclass 293 for selected wavelength
modifier.
Subclass:
409
Hand-held:
This subclass is indented under subclass 407. Subject matter
wherein the radiant heater is to be held in the hand during
use.
SEE OR SEARCH CLASS:
250, Radiant Energy, subclass 504 for hand-held.
607, Surgery: Light, Thermal, and Electrical Application, 88
for light applicators.
Subclass:
410
With air or gas circulation:
This subclass is indented under subclass 409. Subject matter
wherein the hand held radiant heater comprises means to
provide a flow of air or gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
383 for portable air blaster.
476 for hand-held discharge member.
Subclass:
411
Lamp banks (i.e., array of plural lamps):
This subclass is indented under subclass 407. Subject matter
wherein the radiant heater comprises a plurality of
incandescent filaments each enclosed in a sealed, transparent
envelope arranged in a line or in tiers.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 405 for heat energy
reflecting or directing means, and subclass 411 for infrared
generating means.
362, Illumination, 227 for plural light sources.
Subclass:
412
Adjustable lamps position:
This subclass is indented under subclass 411. Subject matter
wherein the array of plural lamps includes means to allow at
least a group of lamps to shift from one position to another
with respect to a base or support structure.
SEE OR SEARCH CLASS:
362, Illumination, subclass 239 for relative adjustment
means.
Subclass:
413
Adjustable individual lamp position:
This subclass is indented under subclass 412. Subject matter
wherein the group of lamps includes means to allow each lamp
to shift with respect to base or support structure.
Subclass:
414
Lamp banks form arch:
This subclass is indented under subclass 411. Subject matter
wherein the lamp banks are arranged to form a curve or bow.
Subclass:
415
Lamp banks movable relative to stationary work during use:
This subclass is indented under subclass 411. Subject matter
wherein the lamp banks includes means permitting the lamp
banks to be moved along a fixed track during use.
Subclass:
416
With chamber:
This subclass is indented under subclass 407. Subject matter
wherein the heating device is located in an enclosed cavity.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 405 for heat energy
reflecting or directing means and subclass 411 for infrared
generating means.
Subclass:
417
For heating moving strand, web, or sheet:
This subclass is indented under subclass 407. Subject matter
wherein the radiant heater includes means for heating a
strand, web or sheet like material during its transport.
SEE OR SEARCH CLASS:
34, Drying and Gas or Vapor Contact With Solids, subclass 519
and 611+ for sheets, webs or strands.
219, Electric Heating, subclass 388 for conveyor.
Subclass:
418
With support for workpiece:
This subclass is indented under subclass 407. Subject matter
wherein the radiant heater includes structural means to
position a workpiece with respect to a base or structure.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 405 for an oven having a
heating unit casing or support including energy reflecting or
directing means, subclass 411 for an oven having infrared
generating heating unit structure, or subclasses 460.1+ for
an exposed planar support surface for material to be heated
(e.g., hot plate, etc.) where a heating element is gapped
from an underside of the support surface (e.g., ceramic
plate, radiation type, etc.).
362, Illumination, subclass 33 for work-table lighting
system.
Subclass:
419
Focused radiant beam:
This subclass is indented under subclass 407. Subject matter
wherein the radiant heater includes means for producing
intense electromagnetic radiation in a converging pattern to
a limited or well-defined area of an object, e.g., point or
line, etc.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, subclass 683 and 684+ for
concentrating reflector; subclasses 683 and 698+ for
concentrating lens; and subclasses 680+ for energy
concentrator with support for material heated.
607, Surgery: Light, Thermal, and Electrical Application, 88
for transparent rods.
Subclass:
420
Plural reflectors:
This subclass is indented under subclass 419. Subject matter
including two or more opaque mirror-like means which redirect
the incident radiation back to the medium from which it
came.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 405 for heat energy
reflecting or directing means and subclass 411 for infrared
generating means.
359, Optics: Systems (Including Communication) and Elements,
850 for plural mirrors.
362, Illumination, 297 for plural reflecting surface and
subclasses 346+ for plural separate reflectors or separate
section.
Subclass:
421
Elliptical or ellipsoidal reflector:
This subclass is indented under subclass 419. Subject matter
wherein the concentrated beam is produced by a reflector
assembly of elliptical or ellipsoidal shape.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 405 for heat energy
reflecting or directing means and subclass 411 for infrared
generating means.
359, Optics: Systems (Including Communication) and Elements,
838 for mirrors.
Subclass:
422
With reflector:
This subclass is indented under subclass 407. Subject matter
including opaque mirror-like means which redirects the
electromagnetic radiation from a source into a flow of
electromagnetic radiation in a parallel or diffuse pattern.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 133 for coated, roughened or
polished surface.
219, Electric Heating, subclass 405 for an oven having a
heating unit casing or support including energy reflecting or
directing means, subclass 411 for an oven having infrared
generating heating unit structure, or subclass 455.12 for an
exposed planar support surface for material to be heated
(e.g., hot plate, etc.) having a particular supporting,
retaining, or mounting for a heating unit including a
reflector.
250, Radiant Energy, 493.1 for an invisible radiation source
with a casing or a radiation modifying member.
338, Electrical Resistors, subclass 11 for a resistive
element combined with means for reflecting heat onto the
element.
343, Communications: Radio Wave Antennas, 700 for radio
antennas and, particularly, subclasses 912+ for reflectors or
directors.
359, Optics: Systems (Including Communication) and Elements,
for light reflecting or directing means in general and,
especially, 838 for optic mirrors or reflectors.
362, Illumination, for artificial light directing or
reflecting means and, particularly, 296 and 341+ for
reflectors.
Subclass:
423
Elongated reflector:
This subclass is indented under subclass 422. Subject matter
wherein the reflector has a length greater than its width.
Subclass:
424
Heating element in transparent tubular envelope:
This subclass is indented under subclass 423. Subject matter
wherein the heating device includes a tube shape enclosure
enclosing the heating element and is translucent to the
radiation.
SEE OR SEARCH CLASS:
313, Electric Lamp and Discharge Devices, appropriate
subclasses for transparent tubular envelope.
338, Electrical Resistors, 234 for gaseous or vacuum spacing
between element and casing or housing.
Subclass:
425
With exposed radiant heating element:
This subclass is indented under subclass 423. Subject matter
in which the heating element lays open to the atmosphere.
Subclass:
426
Bowl-shaped reflector:
This subclass is indented under subclass 422. Subject matter
wherein the reflector's shape is defined by a concave surface
having a central axis of rotation (e.g., hemispherical or
parabolic reflector).
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 405 for heat energy
reflecting or directing means and subclass 411 for infrared
generating means.
Subclass:
427
Annular heating element concentric with reflector axis:
This subclass is indented under subclass 426. Subject matter
wherein the heating element is ring shaped and centered about
the central axis of the bowl-shaped reflector.
Subclass:
428
Linear heating element aligned with reflector axis:
This subclass is indented under subclass 426. Subject matter
wherein the heating element is extended in a line and aligned
with the central axis of the bowl-shaped reflector.
Subclass:
429
Coiled on core:
This subclass is indented under subclass 428. Subject matter
wherein the electric resistance wire is wound on an elongated
electrically insulated support member.
SEE OR SEARCH CLASS:
338, Electrical Resistors, 296 for helical or wound
resistance element.
Subclass:
430
Wall mounted:
This subclass is indented under subclass 422. Subject matter
wherein the radiant heater with reflector is readily mounted
on a continuous side structure of a room or other enclosure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
359 for convection heater with heat exchange fluid.
363 for forced air type heater.
370 for convection space heater.
381 for concentrated heated air stream heater.
392 for vaporizer.
436 for radiant extended surface heater.
Subclass:
431
Collapsible or foldable reflector:
This subclass is indented under subclass 422. Subject matter
wherein the reflector comprises a plurality of reflector
sections which may be brought into a compact form by bending
and laying the sections together.
Subclass:
432
Radiant extended surface type heater:
This subclass is indented under subclass 407. Subject matter
wherein the radiant heater comprises a wide or enlarged
surface for emitting radiation as a broad beam.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 49 for radiant building panel;
subclasses 168+ for conduit within, or conforming to, panel
or wall structure; and subclasses 172+ for side-by-side
tubular structure or tube sections.
219, Electric Heating, subclass 213 for static structure.
338, Electrical Resistors, 283 for zigzag or sinuous
resistance element; subclasses 306+ for base extending along
resistance element; subclasses 315+ for mounting or
supporting means; and subclass 321 for resistance element
cores and frames.
373, Industrial Electric Heating Furnaces, subclasses 127-134
for having resistance encasement means.
432, Heating, subclass 31 for heating of or by wall or
radiant surface.
Subclass:
433
With exposed radiant heating element:
This subclass is indented under subclass 432. Subject matter
wherein the heating element lays open to the atmosphere.
Subclass:
434
On ceramic support structure:
This subclass is indented under subclass 433. Subject matter
wherein the radiant heating element is supported by an
electrically insulative refractory material.
Subclass:
435
With heat radiating panel:
This subclass is indented under subclass 432. Subject matter
wherein the radiant heater comprises an overall rectangular
perimeter having length and width greatly exceeding its
thickness.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 49 for radiant building panel;
subclasses 168+ for conduit within, or conforming to, panel
or wall structure; and subclasses 172+ for side-by-side
tubular structures or tube sections.
219, Electric Heating, subclass 528, 548 and 549 for flexible
or resilient; subclass 543 for coating printed or deposited
on core sheath or support.
338, Electrical Resistors, subclass 212 for tape or sheet,
and subclasses 306-314 for base extending along resistance
element.
Subclass:
436
Wall or ceiling mounted:
This subclass is indented under subclass 435. Subject matter
wherein the radiant heater panel is readily mounted on a
continuous side structure of a room.
SEE OR SEARCH CLASS:
165, Heat Exchange, 53 for related to wall, floor or ceiling
structure of a chamber.
219, Electric Heating, subclass 213 for static structure.
Subclass:
437
Plural panels:
This subclass is indented under subclass 436. Subject matter
wherein the radiating panel structure includes at least two
or more panels.
Subclass:
438
Heating element formed as coating on radiating panel
surface:
This subclass is indented under subclass 435. Subject matter
wherein the the heating element is a layer of an electrical
resistance material spread over a surface of the radiating
panel.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 543 for coating printed or
deposited on core sheath or support means.
338, Electrical Resistors, subclasses 307-309 for
resistance element coated on base.
Subclass:
439
Nonmetallic panel:
This subclass is indented under subclass 438. Subject matter
wherein the heating element is coated on a nonmetallic
panel.
Subclass:
440
Multi-direction radiant heat output:
This subclass is indented under subclass 407. Subject matter
wherein the heat generated by the radiant heater is
simultaneously guided in two or more directions.
Subclass:
441
Tank or container type liquid heater:
This subclass is indented under subclass 200. Subject matter
under Class 219, ... wherein the heating device includes a
vessel for heating liquid therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
308 for heating liquid by electricity combined with
nonelectric heating means.
322 for reservoir or tank type of fluid-in-circuit heater.
325 for line connected boiler.
333 for manually filled tank or container.
341 for fluid heating with heat storage means.
377 for heat exchange fluid.
400 for in-line connected closed tank.
402 for in-line connected open tank.
403 for container with self-contained evaporant supply.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, subclass 493 for
pool type with heating means.
119, Animal Husbandry, for residual apparatus to care for a
living animal, subclass 73 for a temperature-controlled
watering or liquid feeding apparatus.
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclasses
344-363.1 for a liquid heater that may include a kettle, a
steam generator, stove pipe for use with a stove, a domestic
water heater or boiler (e.g., kitchen boiler, range boiler,
etc.) for use with a stove or furnace.
Subclass:
442
Pour-in displacement discharge type tank:
This subclass is indented under subclass 441. Subject matter
wherein the tank has an open inlet through which unheated
liquid is poured into the tank to discharge through an open
outlet a quantity of heated liquid equal to that poured in.
Subclass:
443
Flexible container (e.g., water bottle, etc.):
This subclass is indented under subclass 441. Subject matter
wherein the tank or container is made of easily deformable
material.
SEE OR SEARCH CLASS:
5, Beds, 421 for heating or cooling of waterbed mattress.
126, Stoves and Furnaces, 204 for body warmers.
165, Heat Exchange, subclass 46 for flexible envelope or
cover type.
219, Electric Heating, 528 for flexible or resilient heater
unit housing and subclass 549 for flexible core.
383, Flexible Bags, subclass 901 for hot water bags.
607, Surgery: Light, Thermal, and Electrical Application,
subclass 114 for hot water bags adapted for application to
the human body.
Subclass:
444
Portable container or tank:
This subclass is indented under subclass 441. Subject matter
wherein the container or tank may be lifted or carried bodily
from place-to-place by hand.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, appropriate subclasses
for various containers adapted for the heating or processing
of foods which may be portable.
119, Animal Husbandry, subclass 229 for a fish enclosure
with a heat exchanger and subclass 262 for an aquarium with a
heat exchanger.
219, Electric Heating, 429 for vessel and stand; subclasses
438+ for vessel; and subclass 533 for portable heater unit
with housing, casing or support means.
222, Dispensing, 146.1 for heating or cooling means.
239, Fluid Sprinkling, Spraying, and Diffusing, 128 for
heating or cooling means for the system or system fluid.
Subclass:
445
Plural compartments:
This subclass is indented under subclass 444. Subject matter
wherein the portable tank structure contains two or more
interconnected compartments consisting of at least one
heating compartment wherein the liquid to be heated is in
heat exchange relationship to a heating device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for reservoir or tank.
333 for manually filled tank or container.
SEE OR SEARCH CLASS:
99, Foods and Beverage: Apparatus, 279 for infusers.
165, Heat Exchange, appropriate subclasses for compartmented
tanks.
220, Receptacle, appropriate subclasses for compartmented
tanks.
Subclass:
446
With agitator:
This subclass is indented under subclass 444. Subject matter
wherein the tank or liquid container is provided with means
to stir, move or circulate the heated liquid in the tank to
maintain a constant uniform temperature condition throughout
the entire quantity of liquid.
SEE OR SEARCH CLASS:
119, Animal Husbandry, subclass 229 for a fish enclosure
with a heat exchanger and subclass 262 for an aquarium with a
heat exchanger and aerator which may agitate.
165, Heat Exchange, subclass 109.1 for agitating or stirring
structure.
366, Agitating, 144 for heating or cooling.
432, Heating, subclass 151 for stirrer in externally heated
tank.
Subclass:
447
With internally positioned heating element:
This subclass is indented under subclass 444. Subject matter
wherein the heating device for heating the liquid in the tank
or container is placed in a portion of the tank or container
receiving the liquid to be heated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
333 for manually filled tank or container.
403 for container with self-contained evaporant supply.
497 for immersion heater details.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclass 360.1
and 360.2 for a submerged fluid fuel burner other than a
top-accessible liquid heating vessel, subclasses 367.1 and
368.1 for a liquid heater having a solid fuel burner
submerged underneath the surface of the liquid that may be
held in an open-top vessel, subclass 378.1 for an open-top
liquid heating vessel that may include a lid having a closed
chamber or coiled pipe for a liquid or steam used to heat the
liquid, or subclass 391.1 for an open-top liquid heating
vessel that may include a lid having a flue penetrating a
wall of the vessel into the liquid.
219, Electric Heating, subclass 437 for immersible and
subclass 523 for housing, casing or support insertable into
material or space to be heated.
222, Dispensing, subclass 146.1 for heating or cooling
means.
Subclass:
448
Removably inserted through fill opening:
This subclass is indented under subclass 447. Subject matter
wherein the heating element positioned internally of the
container or tank may be readily placed into or removed from
the tank through a hole through which the quantity of liquid
to be heated is poured in the container or tank.
SEE OR SEARCH CLASS:
119, Animal Husbandry, subclass 229 for a fish enclosure
with a heat exchanger and subclass 262 for an aquarium with a
heat exchanger.
Subclass:
449
Line connected tank:
This subclass is indented under subclass 441. Subject matter
wherein the tank or container includes an inlet connected to
a pressurized source of liquid and an outlet for discharging
heated liquid from the tank.
SEE OR SEARCH THIS CLASS, SUBCLASS:
325 for steam or vapor generator line connected boiler.
341 for fluid heating by heat storage means.
400 for line connected closed tank.
402 for line connected open tank.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, 279 for infusers.
122, Liquid Heaters and Vaporizers, using means other than
electricity to generate heat, subclasses 13.01-19.2 for a
stand boiler (e.g., water heater, etc.) that provides hot
water for domestic or household use (e.g., cooking, cleaning,
washing, bathing, space heating, etc.) that may be in other
than a house or home (e.g., apartment building, office
building, restaurant, laundry, recreational vehicle, etc.).
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclasses
344-363.1 for a liquid heater that may include a kettle, a
steam generator, stove pipe for use with a stove, a domestic
water heater or boiler (e.g., kitchen boiler, range boiler,
etc.) for use with a stove or furnace.
165, Heat Exchange, appropriate subclasses for line connected
tank.
220, Receptacles, 62.11 for multilayer barrier structure,
and subclasses 567.3 for hot water boiler type.
Subclass:
450
Plural serially connected compartments:
This subclass is indented under subclass 449. Subject matter
wherein the tank or container structure contains two or more
serially interconnected compartments consisting of at least
one heating compartment wherein the liquid to be heated is in
heat exchange relationship to the heating device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for reservoir or tank.
325 for line connected boiler.
SEE OR SEARCH CLASS:
220, Receptacles, 500 for compartmented receptacles.
Subclass:
451
With immersion heating element:
This subclass is indented under subclass 449. Subject matter
wherein the heating device includes an electrical resistance
heating element which is supported within the liquid to be
heated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for reservoir or tank.
324 for steam or vapor generator.
401 for line connected closed tank.
497 for details of immersion heater.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclass 360.1
and 360.2 for a submerged fluid fuel burner other than a
top-accessible liquid heating vessel, subclasses 367.1 and
368.1 for a liquid heater having a solid fuel burner
submerged underneath the surface of the liquid that may be
held in an open-top vessel, subclass 378.1 for an open-top
liquid heating vessel that may include a lid having a closed
chamber or coiled pipe for a liquid or steam used to heat the
liquid, or subclass 391.1 for an open-top liquid heating
vessel that may include a lid having a flue penetrating a
wall of the vessel into the liquid.
Subclass:
452
With baffle or guard:
This subclass is indented under subclass 451. Subject matter
wherein the immersion heater includes a plate or wall for
directing the liquid in a desired flow pattern in the tank.
SEE OR SEARCH CLASS:
122, Liquid Heaters and Vaporizers, using means other than
electricity to generate heat, subclass 19.1 for a stand
boiler (e.g., water heater, etc.) that provides hot water for
domestic or household use (e.g., cooking, cleaning, washing,
bathing, space heating, etc.) that may be in other than a
house or home (e.g., apartment building, office building,
restaurant, laundry, recreational vehicle, etc.) having a
water containing chamber or external tank including a flow
feature within.
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclass 362.1
for a boiler receiving hot liquid or steam from a stove or
furnace (e.g., kitchen boiler, range boiler, etc.) having
liquid circulation means or subclass 365.1 for a liquid
heater and stovepipe having liquid circulation means.
165, Heat Exchange, appropriate subclasses for baffle or
guard.
219, Electric Heating, subclass 523 for housing, casing or
support insertable into material or space to be heated.
Subclass:
453
Removably insertable into tubular receptacle in tank:
This subclass is indented under subclass 451. Subject matter
wherein the heating device may be placed into or removed from
a tube shaped water-tight receiver extending into the tank.
SEE OR SEARCH THIS CLASS, SUBCLASS:
398 for internal heating element for continuous flow line
connected heater.
401 for internal heating element for in-line connected
closed tank.
487 for jacket for heating element.
497 for immersion heater details.
503 for particular sheath or jacket composition of immersion
heater.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 523 for immersion type and
subclass 534 for rigid tubular housing, casing or support.
338, Electrical Resistors, 232 for casing or housing readily
openable or separable from element.
Subclass:
454
Plural heating zones:
This subclass is indented under subclass 451. Subject matter
wherein the heating device is located in at least two or more
separate areas of the tank to be heated.
SEE OR SEARCH CLASS:
236, Automatic Temperature and Humidity Regulation, subclass
1 for burner control and for multistage controls.
Subclass:
455
With heating element mounting arrangements:
This subclass is indented under subclass 451. Subject matter
including details of mounting arrangements of the heating
element in the tank.
SEE OR SEARCH THIS CLASS, SUBCLASS:
401 for internal heating element.
501 for particular mounting means.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 437 for immersible heater;
subclass 523 for housing, casing or support insertable into
material or space to be heated; subclass 526 for means for
attaching housing or casing to an external device; and
subclass 536 for heating unit mounting or attaching means.
338, Electrical Resistors, subclass 228 for casing extending
through plate; subclass 229 for probe type; and subclasses
315+ for mountings or supporting means.
Subclass:
456
With heat exchange fluid:
This subclass is indented under subclass 451. Subject matter
wherein the tank includes a fluid which is heated by the
heating element for subsequent transmission of the heat to
the liquid to be heated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
302 for heat exchange fluid used in borehole.
357 for convection space heater using heat exchange fluid.
496 for continuous fluid heater using heat exchange fluid.
SEE OR SEARCH CLASS:
122, Liquid Heaters and Vaporizers, using means other than
electricity to generate heat, subclass 15.1 for a stand
boiler (e.g., water heater, etc.) that provides hot water for
domestic or household use (e.g., cooking, cleaning, washing,
bathing, space heating, etc.) that may be in other than a
house or home (e.g., apartment building, office building,
restaurant, laundry, recreational vehicle, etc.) heated by a
liquid or steam (e.g., indirect heating, etc.).
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclasses
377.1-392.1 for an open-top liquid heating vessel that may
include a lid having a confining, directing, or shielding
feature for a liquid or steam used to heat the vessel.
165, Heat Exchange, subclass 104.11 for intermediate fluent
heat exchange material receiving and discharging heat.
239, Fluid Sprinkling, Spraying, and Diffusing, 139 for
spaced jacket or compartment for heating fluid.
252, Compositions, 67 for vaporization, or expansion,
refrigeration or heat or energy exchange.
338, Electrical Resistors, subclass 231 for incased,
embedded, or housed resistors in liquid.
Subclass:
457
With protecting means against galvanic corrosion:
This subclass is indented under subclass 451. Subject matter
wherein the heating device in-line connected tank includes
means to prevent or retard electrochemical corrosion produced
when one metal is in electrical contact with another more
noble metal, both being in the same corroding medium or
electrolyte, with a current between them.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 134.1 for protector or
protective agent.
204, Chemistry: Electrical and Wave Energy, 196.01 for
object protection.
220, Receptacles, subclass 567.3 for hot water boiler type.
Subclass:
458
With external heater:
This subclass is indented under subclass 449. wherein the
heating device is located outside of the tank and in heat
exchange relation with the liquid to be heated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
400 for in line connected closed tank.
SEE OR SEARCH CLASS:
119, Animal Husbandry, subclass 73 for a
temperature-controlled watering device, subclass 229 for a
fish enclosure with a heat exchanger and subclass 262 for an
aquarium with a heat exchanger.
219, Electric Heating, subclass 424 for protecting means for
heating unit or switch; subclass 436 for heating unit
attaching or support means; subclasses 438+ for vessel
combined with container; and subclass 535 for specially
formed or adapted to fit material to be heated.
432, Heating, subclass 225 for heat applicator having
structure for mounting it on or around object to be heated.
Subclass:
459
Clamped or secured to tank wall:
This subclass is indented under subclass 458. Subject matter
including a means to fasten or anchor the heating element to
the tank wall.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 536 for heating unit
mounting or attaching means and subclass 542 for
resistive-element attaching, securing or electrical
insulation means.
Subclass:
460
Producing radiation:
This subclass is indented under subclass 458. Subject matter
wherein the external heater emits heat in the form of
electromagnetic waves within the infrared range of spectrum.
SEE OR SEARCH THIS CLASS, SUBCLASS:
355 for heated by radiant source.
391 for vaporization by radiant heat source.
407 for electric radiant heater in general.
483 for fluid heater producing radiation.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, 569 for solar heat collector.
165, Heat Exchange, subclass 133 for coated, roughened or
polished surface.
250, Radiant Energy, 493.1 for infrared radiation generators
not provided for elsewhere.
432, Heating, subclass 31 for heating of or by wall or
radiant surface.
Subclass:
461
With externally mounted circulation-type heater:
This subclass is indented under subclass 458. Subject matter
wherein the liquid of the tank is heated as it flows through
an external flow heater having an inlet for receiving cold
liquid from the tank and an outlet for returning heated
liquid to the tank.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for reservoir or tank.
377 for heat exchange fluid.
465 for continuous flow type fluid heater.
471 for combined liquid flow heater and pump unit.
479 for externally heated line connected section.
485 for heated line section with heating element internal of
flow path.
SEE OR SEARCH CLASS:
122, Liquid Heaters and Vaporizers, using means other than
electricity to generate heat, subclass 18.5 for a stand
boiler (e.g., water heater, etc.) that provides hot water for
domestic or household use (e.g., cooking, cleaning, washing,
bathing, space heating, etc.) that may be found in other than
a house or home (e.g., apartment building, office building,
restaurant, laundry, etc.) having a fluid fueled burner and
an external water tank.
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclasses
361.1-363.1 for a boiler receiving hot liquid or steam from
a stove or furnace (e.g., kitchen boiler, range boiler,
etc.).
165, Heat Exchange, subclass 108 for recirculation and
subclass 132 for heating or cooling means in open
communication with reservoir.
Subclass:
462
Laterally disposed (i.e., side-arm type):
This subclass is indented under subclass 461. Subject matter
wherein the heater is positioned and connected to a side of
the tank.
Subclass:
463
With timer controlled energization:
This subclass is indented under subclass 449. Subject matter
wherein the line connected tank includes means for
automatically or manually connecting a source of current or
power at regular predetermined times of the day or for
predetermined intervals of time.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, subclass 327 for
automatic control or heating means utilizing timers.
165, Heat Exchange, subclass 262 and 266+ for time or
program actuators for such systems.
219, Electric Heating, 492 for automatic power supply,
current regulation or current control devices for heaters in
general under the class definition and utilizing cycling or
timing means.
236, Automatic Temperature and Humidity Regulation, subclass
46 for control devices with timing element.
237, Heating Systems, 2 for automatic control apparatus
which may comprise timing means.
368, Horology: Time Measuring Systems or Devices,
appropriate subclasses for regulating times.
Subclass:
464
Off-peak power:
This subclass is indented under subclass 463. Subject matter
wherein the timer permits energization of the heater at the
time of day during which power usage is at a minimum, i.e.,
off-peak.
SEE OR SEARCH THIS CLASS, SUBCLASS:
339 for heat storage means.
SEE OR SEARCH CLASS:
307, Electrical Transmission or Interconnection Systems,
appropriate subclasses for electrical transmission and
interconnection switching systems.
327, Miscellaneous Active Electrical Nonlinear Devices,
Circuits, and Systems, 365 for miscellaneous gating
circuits.
Subclass:
465
Continuous flow type fluid heater:
This subclass is indented under subclass 200. Subject matter
under Class 219, ... wherein the heating device comprises a
flow path for the uninterrupted flow of fluid, either a
liquid or gas, to be heated; an inlet connected to a
pressurized source of fluid; and an electric resistance
heating element arranged in the fluid flow path for heating
the fluid while it uninterruptedly flows through the path.
(1) Note. This subject matter is also known as "in-line
fluid heaters", "through flow fluid heaters", and "demand
type fluid heaters".
SEE OR SEARCH THIS CLASS, SUBCLASS:
314 for fluid-in-circuit type heater.
341 for fluid heating by storage means.
357 for fluid heat absorber.
396 for continuous flow line connected heater for
vaporizer.
461 for externally mounted circulation type heater.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, subclass 598 for
shower with heating means.
99, Foods and Beverages: Apparatus, subclass 279 for
beverage preparing apparatus which may include a continuous
flow water heater.
122, Liquid Heaters and Vaporizers, appropriate subclasses
for liquid heaters of the continuous flow type.
123, Internal-Combustion Engines, subclass 142.5 and 545-558
for continuous flow heater associated with
internal-combustion engine.
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclasses
344-363.1 for a liquid heater that may include a kettle, a
steam generator, stove pipe for use with a stove, a domestic
water heater or boiler (e.g., kitchen boiler, range boiler,
etc.) for use with a stove or furnace.
128, Surgery, 203.26 for means for heating treating agent,
respiratory gas, or mixture thereof and subclasses 204.17+
for electrically heated means producing water vapor.
137, Fluid Handling, 334 for systems with heating or
cooling.
138, Pipes and Tubular Conduits, 32 for thawing and freezing
protection.
165, Heat Exchange, appropriate subclasses for continuous
fluid heater.
210, Liquid Purification or Separation, 175 for heater or
heat exchanger.
219, Electric Heating, 600 for inductive heating, note
subclass 628 for heat exchange by fluid or liquid; and
subclasses 678+ for microwave heating, note subclass 687 for
a fluid heater; and subclass 208 for radiator or cooling
system.
222, Dispensing, 146.1 for heating or cooling means.
239, Fluid Sprinkling, Spraying, and Diffusing, subclass 13
for heating or cooling and subclasses 128+ for the system
fluid with heating or cooling.
431, Combustion, 219 for heated line feeds steam to fuel
basin area.
D23, Environmental Heating and Cooling; Fluid Handling and
Sanitary Equipment, 314 for heating or cooling.
Subclass:
466
Method:
This subclass is indented under subclass 465. Subject matter
including processes for heating a continuous flow of fluids
(e.g., air or water, etc.) by conversion of electrical energy
to heat.
SEE OR SEARCH CLASS:
34, Drying and Gas or Vapor Contact With Solids, 283 for
processes of treating hair on head and, particularly,
subclasses 443+ for processes of gas or vapor contact with
material treated.
126, Stoves and Furnaces, subclass 714 for process of
heating by using solar heat.
165, Heat Exchange, 1 for heat exchange processes which may
include heating.
166, Wells, 272.1 for processes of injecting heat into
wells.
210, Liquid Purification or Separation, 600 for processes of
liquid purification or separation.
222, Dispensing, 1 for dispensing processes which may
include heating.
237, Heating Systems, subclass 12 for process of automatic
control of heating systems.
239, Fluid Sprinkling, Spraying, and Diffusing, subclasses
1-13 for processes of fluid sprinkling, spraying and
diffusing.
431, Combustion, subclass 11 for process of combustion or
burner by feeding heat.
432, Heating, subclasses 1-31 for heating processes and,
particularly, subclasses 29 and 30 for fluid heating
processes.
Subclass:
467
With hot plate:
This subclass is indented under subclass 465. Subject matter
wherein the continuous fluid heater includes means for
supporting a removable vessel to be heated.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, subclasses 275-323 for
beverage heaters utilizing a continuous flow heater which may
include a hotplate.
126, Stoves and Furnaces, 4 for cooking and heating stove.
219, Electric Heating, 429 for a heating device combined
with a vessel or stand, or subclasses 443.1+ for an exposed
planar support surface for material to be heated (e.g., hot
plate, etc.).
222, Dispensing, subclass 146.1 for heating or cooling
means.
Subclass:
468
Pipeline tracing:
This subclass is indented under subclass 465. Subject matter
wherein the heating device comprises the entire length of a
pipeline carrying the flow of fluid which is heated by a
linearly extending electrical resistance heater coextensive
with the exterior of the pipeline length.
SEE OR SEARCH THIS CLASS, SUBCLASS:
472 for flexible fluid heater.
479 for heated line section with heating elements external
of flow path, particularly 480-482 for a pipe or tube forming
flow path.
485 for heated line section with heating element internal of
flow path.
486 for plural pipes or tubes form flow path.
488 for pipe or tube forms flow path.
SEE OR SEARCH CLASS:
137, Fluid Handling, 301 for hydrant with freeze protection
which may include a heater and subclasses 334+ for systems
with heating and cooling.
138, Pipes and Tubular Conduits, 32 for thawing and freezing
protection.
219, Electric Heating, subclass 522 for housing, casing, or
support performing plural diverse functions and subclass 535
for a pipe to be heated.
222, Dispensing, 146.1 for a device with heating or cooling
means.
Subclass:
469
Skin-effect heater type (e.g., S.E.C.T., etc.):
This subclass is indented under subclass 468. Subject matter
wherein the resistance heating element of the pipeline length
is accomplished by the flow of alternating current through
the walls of a ferromagnetic pipe, and the current flow is
confined to the interior of the ferromagnetic pipe.
SEE OR SEARCH THIS CLASS, SUBCLASS:
478 for fluid conveying tube or pipe comprising resistive
heating element.
480 for pipe or tube forms flow path.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, subclass 33 for electric
thawing and freezing protection.
174, Electricity: Conductors and Insulators, appropriate
subclasses for electrical conductors or conduits.
Subclass:
470
Disposable cartridge, tube or bag forms heated flow path
(e.g., blood bag, etc.):
This subclass is indented under subclass 465. Subject matter
wherein the flow path comprises a hollow cylinder, sack, case
or shell which can be readily removed and replaced after
use.
(1) Note. The disposable cartridge, tube or bag may be a
blood bag.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 46 for flexible envelope or
cover type.
222, Dispensing, 146.1 for heating or cooling means.
604, Surgery, subclass 113 and 114 for means for heating
body treating material or device and subclasses 403+ for
containers for body treating materials.
Subclass:
471
Combined liquid flow heater and pump unit:
This subclass is indented under subclass 465. Subject matter
wherein the fluid flow heater includes a hydraulic machine
for creating a continuous flow of liquid combined with the
fluid heating means in a common enclosure.
(1) Note. The pump may be a mechanical pump, vapor pump,
ejector pump, etc.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, 279 for infusers.
165, Heating Exchange, subclass 108 for recirculation and
subclasses 120+ for impeller or conveyor moving exchange
material.
166, Wells, subclass 62 for eduction pump or plunger in
well.
222, Dispensing, 146.1 for heating or cooling means.
239, Fluid Sprinkling, Spraying, and Diffusing, 128 for
heating or cooling means for these systems or system fluid.
417, Pumps, subclass 208 for pumps by heating of pumped
fluid.
Subclass:
472
Flexible (e.g., hose, etc.):
This subclass is indented under subclass 465. Subject matter
wherein the flow path is formed by a pipe or passage made of
a deformable material which is capable of being bent.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, 32 for thawing and freezing
protection and subclasses 118+ for flexible pipes.
174, Electricity: Conductors and Insulators, subclass 47
for combined fluid conduit and electrical conductor.
219, Electric Heating, subclass 547 for particular material
to be heated.
Subclass:
473
Fluid heater carried on discharge member:
This subclass is indented under subclass 465. Subject matter
wherein the heat is supported on a member defining a passage
or vent for escaping or discharging a fluid from a supply
line or a reservoir.
SEE OR SEARCH THIS CLASS, SUBCLASS:
379 for concentrated air stream.
SEE OR SEARCH CLASS:
137, Fluid Handling, 334 for systems with heating or
cooling.
219, Electric Heating, subclass 214 for vending, dispensing
or display devices.
222, Dispensing, 146.1 for heating or cooling means.
239, Fluid Sprinkling, Spraying, and Diffusing, 128 for
means for heating or cooling the system or fluid.
401, Coating Implements With Material Supply, 1 for means to
impart heat to material.
425, Plastic Article or Earthenware Shaping or Treating:
Apparatus, 547 for means to heat or cool.
604, Surgery, subclass 113 and 114 for means for
electrically cooling or heating body.
Subclass:
474
With flow control valve (e.g., faucet, etc.):
Subject matter under 473 wherein the discharge member is
provided with a valve operable to control the rate of fluid
flow through the discharge member.
Subclass:
475
Valve turns heating element on and off:
This subclass is indented under subclass 474. Subject matter
wherein the valve is arranged to actuate an electrical
control means to turn the heating element on and off in
synchronism with the opening and closing of the valve.
SEE OR SEARCH CLASS:
200, Electricity: Circuit Makers and Breakers, 61.80 for
fluid controlling valve.
Subclass:
476
Hand-held discharge member:
This subclass is indented under subclass 473. Subject matter
wherein the discharge member is to be held in the hand.
SEE OR SEARCH THIS CLASS, SUBCLASS:
383 for portable heater for concentrated heated air stream.
404 for hand-held container with self-contained evaporant
supply.
SEE OR SEARCH CLASS:
219, Electric Heating, subclass 214 for vending, dispensing
or display device and subclass 230 for tip cooling, clamping
or lighting means.
222, Dispensing, subclass 146.1 for heating or cooling
means.
607, Surgery: Light, Thermal, and Electrical Application,
104 for thermal applicators with fluid supply and subclass
113 for internal applicator.
Subclass:
477
With storage container for fluid to be heated:
This subclass is indented under subclass 476. Subject matter
wherein the hand-held discharge member is provided with a
container or reservoir for the fluid to be heated.
SEE OR SEARCH CLASS:
228, Metal Fusion Bonding, 52 for metal heat applicator.
239, Fluid Sprinkling, Spraying, and Diffusing, 128 for
heating or cooling means for the system or system fluid and
subclasses 133+ for spray terminal carrying member carriers
heater.
401, Coating Implements With Material Supply, 1 for means to
impart heat to material.
Subclass:
478
Fluid conveying tube or pipe comprising resistive heating
element:
This subclass is indented under subclass 465. Subject matter
wherein the flow path through the fluid heater is formed by a
conduit made of an electrically resistive material having at
least two points thereon connected to a source of electricity
whereby the conduit itself comprises the resistive heating
means for heating the fluid.
SEE OR SEARCH CLASS:
137, Fluid Handling, subclass 341 for heating or cooling of
the system by electric heating element.
138, Pipes and Tubular Conduits, subclass 33 for thawing and
freeze protection by electricity.
219, Electric Heating, subclass 547 for particular material
to be heated.
222, Dispensing, subclass 146.1 for heating or cooling
means.
Subclass:
479
Externally heated line connected section:
This subclass is indented under subclass 465. Subject matter
wherein the fluid heating device comprises means defining a
closed flow path having an inlet and an outlet, an electric
resistance heating element externally of the flow path
arranged to heat the fluid flowing therethrough, and means at
the inlet and outlet of the flow path for coupling the
heating device into a fluid flow line as a part thereof.
(1) Note. The heating element may be secured or coupled in
any heat conductive manner to the external surface of the
heated line section.
SEE OR SEARCH THIS CLASS, SUBCLASS:
396 for in continuous flow line connected vaporizer.
473 for fluid heater carried on discharge member.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclass 357.1
for a fluid fuel burner other than a top-accessible liquid
heating vessel and a separable heat exchanger to heat the
liquid or subclass 392.1 for an open-top liquid heating
vessel that may include a lid where the liquid circulates
between an external heating tube and the vessel.
137, Fluid Handling, 340 for circulation fluid in heat
exchange relationship.
138, Pipes and Tubular Conduits, 32 for thawing and freeze
protection.
219, Electric Heating, subclass 535 for a pipe to be
heated.
222, Dispensing, 146.1 for molten metal dispensing with
heating.
431, Combustion, subclass 208 for electrically heated
section.
Subclass:
480
Pipe or tube forms flow path:
This subclass is indented under subclass 479. Subject matter
wherein the flow path for the fluid to be heated comprises a
fluid conveying elongated hollow cylinder.
SEE OR SEARCH THIS CLASS, SUBCLASS:
304 for heating element surrounding delivery pipe.
320 for fluid-in-circuit type heater.
397 for continuous flow line connected heater for
vaporizer.
461 for externally mounted circulation type heater.
468 for pipeline tracing.
470 for disposable cartridge, tube or bag forms heated flow
path.
472 for hose type heater.
482 for plural pipes or tubes forms flow path.
486 for heated line section with heating element internal of
flow path.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, 279 for infusers.
222, Dispensing, 146.1 for heating or cooling means.
Subclass:
481
Coiled:
This subclass is indented under subclass 480. Subject matter
wherein the tube or pipe is in the form of a spiral or
helix.
SEE OR SEARCH THIS CLASS, SUBCLASS:
320 for tube or pipe forms flow path.
396 for continuous flow line connected vaporizer.
461 for externally mounted circulation type heater.
468 for pipeline tracing.
472 for flexible hose.
480 for pipe or tube forms flow path.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, 279 for infusers.
122, Liquid Heaters and Vaporizers, subclasses 244-251 for
oil or loop tube.
219, Electric Heating, subclass 535 for specially formed or
adapted to fit material to be heated.
222, Dispensing, 146.1 for heating or cooling means.
239, Fluid Sprinkling, Spraying, and Diffusing, 128 for
heating or cooling means for system or system fluid.
Subclass:
482
Plural pipes or tubes form flow path:
This subclass is indented under subclass 479. Subject matter
wherein the flow path for the fluid to be heated comprises at
least two or more fluid conveying hollow cylinders.
SEE OR SEARCH THIS CLASS, SUBCLASS:
320 for tube or pipe forms flow path in fluid-in-circuit
heater.
461 for externally mounted circulation type heater.
468 for pipeline tracing.
472 for flexible hose.
478 for fluid conveying tube or pipe comprising resistive
heating element.
Subclass:
483
Heating element producing radiation:
This subclass is indented under subclass 479. Subject matter
wherein the the external heater has an electrical resistance
heating element which emits heat in the form of
electromagnetic waves within the infrared range of spectrum.
SEE OR SEARCH THIS CLASS, SUBCLASS:
355 for intermediate heat absorber
391 for vaporizer using radiant heat source.
407 for radiant heater.
460 for external heater producing radiation.
468 for pipeline tracing.
470 for disposable cartridge, tube or bag forming flow
path.
SEE OR SEARCH CLASS:
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclasses
344-363.1 for a liquid heater that may include a kettle, a
steam generator, stove pipe for use with a stove, a domestic
water heater or boiler (e.g., kitchen boiler, range boiler,
etc.) for use with a stove or furnace or subclasses 569-713
for a solar heat collector.
165, Heat Exchange, subclass 133 for coated, roughened or
polished surface.
219, Electric Heating, 600 for inductive heating, note
subclass 628 for heat exchange by fluid or liquid, and
subclasses 678+ for microwave heating, note subclass 687 for
a fluid heater.
Subclass:
484
Block forms flow path:
This subclass is indented under subclass 479. Subject matter
wherein the flow path is formed in a solid mass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
467 for hot plate.
494 for heated line section with heating element internal of
flow path.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, 279 for infusers.
239, Fluid Sprinkling, Spraying, and Diffusing, 128 for
heating or cooling means for the system or system fluid.
Subclass:
485
Heated line section with heating element internal of flow
path:
This subclass is indented under subclass 465. Subject matter
wherein the fluid heating device comprises means defining a
closed flow path having an inlet and an outlet, an electrical
resistance heating element disposed in the flow path and
arranged to heat the fluid flowing therethrough, and means at
the inlet and outlet of the flow path for coupling the
heating device into a fluid flow line as part thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
301 for borehole type.
320 for tube or pipe forming flow path.
341 for fluid heating.
396 for in continuous flow line connected vaporizer.
461 for externally mounted circulation type heater.
468 for pipeline tracing.
473 for fluid heater carried on discharge member.
497 for immersion heater details.
SEE OR SEARCH CLASS:
137, Fluid Handling, 340 for circulation fluid in heat
exchange relationship and subclass 185 for gas collecting
float.
138, Pipes and Tubular Conduits, 32 for thawing and freeze
protection.
Subclass:
486
Plural pipes or tubes form flow path:
This subclass is indented under subclass 465. Subject matter
wherein the flow path for the fluid to be heated comprises
two or more fluid conveying hollow cylinders.
SEE OR SEARCH THIS CLASS, SUBCLASS:
314 for continuous flow of fluid being heated.
468 for pipeline tracing.
472 for flexible hose.
478 for fluid conveying tube or pipe comprising resistive
heating element.
482 for plural pipes or tubes forming flow path.
Subclass:
487
With jacket for heating element:
This subclass is indented under subclass 485. Subject matter
wherein the heating element is enclosed by an outer
protective covering.
SEE OR SEARCH THIS CLASS, SUBCLASS:
489 for single pipe or tube forming flow path.
503 for particular sheath or jacket composition of immersion
heater.
SEE OR SEARCH CLASS:
165, Heat Exchange, 177 for tubular structure.
219, Electric Heating, subclass 437 for immersible heating
unit attaching or support means; subclass 520 for heater-unit
housing, casing or support means; subclass 523 for housing,
casing or support insertable into material or space to be
heated; subclass 534 for rigid tubular housing, casing or
support; subclass 544 for element imbedded within or
completely surrounded by core, sheath or support means; and
subclass 548 for particular construction or material.
338, Electrical Resistors, 226 for incased, embedded, or
housed.
Subclass:
488
Pipe or tube forms flow path:
This subclass is indented under subclass 485. Subject matter
wherein the flow path for the fluid to be heated comprises a
fluid conveying elongated hollow cylinder.
SEE OR SEARCH THIS CLASS, SUBCLASS:
308 for heating fluid with non-electric heating means.
397 for pipe or tube forming flow path.
470 for disposable cartridge, tube or bag forming heated
flow path.
472 for flexible hose.
478 for fluid conveying tube or pipe comprising resistive
element.
480 for pipe or tube forming flow path for continuous fluid
heater.
482 for plural pipes or tubes forming flow path.
Subclass:
489
With jacket for heating element:
This subclass is indented under subclass 488. Subject matter
wherein the heating element is enclosed by an outer
protective covering.
SEE OR SEARCH THIS CLASS, SUBCLASS:
487 for plural pipe or tube forming flow path.
503 for particular sheath or jacket composition of immersion
heater.
Subclass:
490
Plural heated line sections (e.g., series or parallel,
etc.):
This subclass is indented under subclass 485. Subject matter
including two or more separate heated line sections in series
or parallel arrangement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
486 for plural pipes or tubes forming flow path.
Subclass:
491
With baffle-defined flow path:
This subclass is indented under subclass 485. Subject matter
wherein the flow path is provided with a member or members in
the flow path for guiding and directing the flow with respect
to the inlet or outlet thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
368 for portable forced air type heater with baffle.
374 for portable convection space heater with baffle.
379 for concentrated heated air stream heater.
Subclass:
492
Producing counterflow circulation:
This subclass is indented under subclass 491. Subject matter
wherein the baffle is arranged to reverse the direction of
fluid flow flowing through the flow path at least once
between the inlet and the outlet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
351 floor furnace type heater.
369 for counterflow of convection space heater.
Subclass:
493
Heating element integral with baffle:
This subclass is indented under subclass 492. Subject matter
wherein the baffle includes the heating element as a unitary
part of the baffle to define flow path and heat up the
fluid.
Subclass:
494
Block forms flow path:
This subclass is indented under subclass 485. Subject matter
wherein the flow path is formed in a solid mass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
467 for hot plate.
484 for externally heated line connected section.
Subclass:
495
Plural different fluids simultaneously heated:
This subclass is indented under subclass 465. Subject matter
wherein the heating device includes separate distinct flow
paths for simultaneously heating at least two or more
different fluids.
SEE OR SEARCH CLASS:
431, Combustion, 210 for heated section supplied by separate
diverse feeds.
604, Surgery, 113 for means for cooling a heating body,
treating or collected material or device.
Subclass:
496
With heat exchange fluid:
This subclass is indented under subclass 465. Subject matter
wherein the heating device includes a fluid which is heated
by the heating element for subsequent transmission to the
flow path for heating up the continuous flow of fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
302 for borehole type.
344 for convection space heating in heat storage.
357 for fluid heat absorber.
377 for convection combined with radiation.
456 for heat exchange fluid line connected heated storage
tank.
SEE OR SEARCH CLASS:
122, Liquid Heaters and Vaporizers, using means other than
electricity to generate heat, subclass 15.1 for a stand
boiler (e.g., water heater, etc.) that provides hot water for
domestic or household use (e.g., cooking, cleaning, washing,
bathing, space heating, etc.) that may be in other than a
house or home (e.g., apartment building, office building,
restaurant, laundry, recreational vehicle, etc.) heated by a
liquid or steam (e.g., indirect heating, etc.).
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclasses
377.1-392.1 for an open-top liquid heating vessel that may
include a lid having a confining, directing, or shielding
feature for a liquid or steam used to heat the vessel.
165, Heat Exchange, 104.11 for intermediate fluent heat
exchange material receiving and discharging heat.
239, Fluid Sprinkling, Spraying, and Diffusing, subclass 139
for spaced jacket or compartment for heating fluid.
252, Composition, 67 for vaporization, or expansion,
refrigeration or heat or energy exchange.
338, Electrical Resistors, subclass 231 for electrical
resistors in liquid.
Subclass:
497
Immersion heater details:
This subclass is indented under subclass 200. Subject matter
under Class 219, ... including details of an electrical
resistance heating element which is supported within liquid
to be heated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
301 for borehole type.
357 for fluid heat absorber.
377 for heat exchange fluid.
398 for internal heating element.
401 for line connected closed tank.
447 for internally positioned heating element.
451 for immersion heating element.
471 for liquid heater with pump unit.
473 for fluid heater carried on discharge member.
485 for heated line section with heating element internal of
flow path.
SEE OR SEARCH CLASS:
99, Foods and Beverages: Apparatus, 279 for infusers and
subclasses 401+ for heat distributor, baffle or enclosure.
119, Animal Husbandry, subclass 73 for a
temperature-controlled watering device, subclass 229 for a
fish enclosure with a heat exchanger and subclass 262 for an
aquarium with a heat exchanger.
Subclass:
498
With thermostatic control means:
This subclass is indented under subclass 497. Subject matter
wherein the immersion heater includes an electrical control
means for controlling the temperature of the liquid to be
heated between predetermined upper and lower limits or at or
above predetermined lower limit
SEE OR SEARCH CLASS:
119, Animal Husbandry, subclass 73 for watering troughs with
liquid temperature control means.
219, Electric Heating, subclass 437 for immersible heating
unit; subclasses 510+ for thermally responsive means; and
subclass 523 for housing, casing or support insertable into
material or space to be heated.
236, Automatic Temperature and Humidity Regulation,
appropriate subclass for automatic temperature control
systems.
337, Electricity: Electrothermally or Thermally Actuated
Switches, 298 for thermally actuated switches.
Subclass:
499
Buoyant in liquid:
This subclass is indented under subclass 497. Subject matter
wherein the heater includes means capable of keeping the
heater afloat in the liquid.
SEE OR SEARCH CLASS:
119, Animal Husbandry, subclass 73 for temperature
controlling water devices.
126, Stoves and Furnaces, for general heat applying apparatus
having other than electrical heating means, subclass 367.1
and 368.1 for a liquid heater having a solid fuel burner
submerged underneath the surface of the liquid that may be
held in an open-top vessel and float in the liquid or
subclasses 373.1-390.1 for a liquid heater having an open-top
vessel that may include a lid and float in the liquid.
Subclass:
500
With plural heating elements:
This subclass is indented under subclass 497. Subject matter
wherein the heater includes two or more immersed heating
elements.
SEE OR SEARCH CLASS:
219, Electric Heating, 476 for plural separate heating
devices; subclass 523 for housing, casing or support
insertable into material or space to be heated; subclass
537 for heating units combined with single casing, housing or
support; and subclass 539 for heating unit structure
comprising plural separate and distinct resistive elements.
338, Electrical Resistors, 260 for plural resistors and
subclasses 319+ for plural resistors extending between
supports.
Subclass:
501
With particular mounting means:
This subclass is indented under subclass 497. Subject matter
wherein the heater includes means for rigidly attaching the
heater to a liquid container or tank.
SEE OR SEARCH CLASS:
219, Electrical Heating, subclass 526 for means for
attaching housing or casing to an external device; subclasses
536+ for heater unit attachment means for heater housings in
general; and subclasses 542+ for significant heating unit
structure adapted for use with the heating device under the
class definition and including significant resistive element
attaching, securing, or insulation means.
338, Electrical Resistors, 228 for casing extending through
plate; and subclasses 315+ for resistance devices combined
with mounting or supporting means.
Subclass:
502
Having positive temperature coefficient:
This subclass is indented under subclass 497. Subject matter
wherein the resistance heating element of the immersion
heater increases its resistance as the temperature
increases.
SEE OR SEARCH CLASS:
219, Electric Heating, 504 for variable resistance means and
subclasses 552+ for heating element structure.
338, Electrical Resistors, 22 for thermistor type and
subclasses 25+ for ambient temperature.
374, Thermal Measuring and Testing, 183 for current
modifying sensor and, particularly, subclass 185 for detail
of resistive sensor.
Subclass:
503
Particular sheath or jacket composition:
This subclass is indented under subclass 497. Subject matter
wherein the heater includes parts or elements to form an
outer, protective covering applied over the heating element.
SEE OR SEARCH CLASS:
165, Heat Exchange, 177 for tubular structure.
219, Electric Heating, subclass 437 for immersible heating
unit attaching or support means; subclasses 520+ for
heat-unit housing, casing or support means; subclass 534 for
rigid tubular housing, casing or support; subclass 544 for
element embedded within or completely surrounded by core,
sheath or support means; and subclass 548 for particular
construction or material of core, sheath or support.
Information Products Division -- Contacts
Questions regarding this report should be directed to:
U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231
tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov
Last Modified: 6 October 2000