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![[Search a list of Patent Appplications for class 261]](../as.gif) CLASS 261, | GAS AND LIQUID CONTACT APPARATUS |
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SECTION I - CLASS DEFINITION
Apparatus specially adapted to produce an intimate contact between gases and liquids to exchange properties or mutually modify conditions.
| (1) Note. This class includes devices generally known as air and gas washers, air-moisteners, carbonators, carburetors, jet-condensers, coolers, heaters, and the like, operating by direct contact of the two fluids. |
SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
Processes for gas separation by contacting a gaseous fluid mixture with a liquid and processes of degasifying a liquid by stripping with a gas are classified elsewhere, even if gas and liquid contact apparatus is also claimed, which apparatus, if claimed alone, would be classifiable in Class 261. See References to Other Classes, below.
SECTION III - REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
| 43, | Fishing, Trapping, and Vermin Destroying, appropriate subclasses for aerators permanently associated with minnow buckets or in combination with significant minnow bucket structure. | ||
| 62, | Refrigeration, subclass 121 for processes specialized to cooling a material involving gas-liquid contact, and subclasses 304+ for apparatus specialized to cooling a material out of contact with the fluids undergoing gas and liquid contact. | ||
| 95, | Gas Separation: Processes, see Lines With Other Classes. Processes for gas separation by contacting a gaseous fluid mixture with a liquid and processes of degasifying a liquid by stripping with a gas are classified elsewhere in Class 95, Gas Separation: Processes, subclasses 149+ and 241+, respectively, even though gas and liquid contact apparatus is also claimed, which apparatus, if claimed alone, would be classifiable in Class 261. | ||
| 96, | Gas Separation: Apparatus, appropriate subclasses for apparatus used in separation
of a gas from a fluid mixture comprising (i) a gas and solid or
liquid particles entrained therein, (ii) a liquid and gas entrained
therein, or (iii) a plurality of gases are classified in Class 96,
Gas Separation: Apparatus. Class 261 will take apparatus for degasifying
liquid (e.g., deaerating feed water heater, etc.) wherein the liquid
is merely contacted with a gas in a chamber or space for deaeration
thereof; for apparatus wherein a gaseous fluid mixture is contacted with
a liquid spray, sheet, stream, or bath to precipitate dust or to
sorb a constituent from the gaseous fluid mixture; for apparatus
comprising a nonabsorbent element on which a gaseous fluid mixture
is contacted with a liquid if the element is continuously supplied
with a liquid or is continuously moved into and out of a liquid
bath or supply; and for apparatus comprising an absorbent porous
sheet or mass on which a gaseous fluid mixture is contacted with a
liquid if the sheet or mass is: (a) continuously supplied with liquid,
(b) cyclically or periodically moved through a liquid reservoir,
(c) maintained wet by liquid applying means, or (d) moistened by
maintaining some part of a continuous wick type member immersed
in liquid, by following the law of the machine, or during normal
operation of a gas contacting function.
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| 110, | Furnaces, appropriate subclasses for gas and liquid contact apparatus in combination with significant furnace structure; particularly subclasses 124 , 127 and 128. | ||
| 122, | Liquid Heaters and Vaporizers, subclasses 459, 479.1 and 487 for processes of desuperheating steam by gas and liquid contact with or without claimed contact apparatus which, per se, is classifiable in Class 261. | ||
| 202, | Distillation: Apparatus, subclasses 182+ for distilling apparatus combined with apparatus for absorbing a gas in a liquid. | ||
| 222, | Dispensing, appropriate subclasses, particularly subclasses 394+ for apparatus which, in some cases, is disclosed as gas and liquid contact apparatus but claims dispensing structure to the exclusion of any arrangement to assist a contact operation. For a statement of the line, see Lines With Other Classes, Gas or Vapor Dispensers, of the class definition of Class 222. | ||
| 239, | Fluid Sprinkling, Spraying, and Diffusing, subclasses 34+ for liquid saturated absorbent masses for slowly diffusing the liquid into a gas atmosphere, and see the class definition of Class 239, Lines With Other Classes and Within This Class, Slow Diffusers, for a statement of the lines between Classes 55, 239, and 261. | ||
| 399, | Electrophotography, subclass 250 for liquid carrier condensation of liquid developer material within an electrophotographic device. | ||
| 435, | Chemistry: Molecular Biology and Microbiology, appropriate subclasses for processes of contacting gases with liquids in operations that include fermentations or for apparatus for use in such processes. |
SUBCLASSES
![[List of Patents for class 261 subclass 1]](../ps.gif) 1 | MISCELLANEOUS: |
| This subclass is indented under the class definition. Contact apparatus not specifically provided for below. | |
| 2 | WITH LIQUID SEPARATIONS: | ||
| This subclass is indented under the class definition. Including means for separating liquids or solids from the
contact liquid.
SEE OR SEARCH CLASS:
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| 3 | In circuit: |
| This subclass is indented under subclass 2. The liquid-separating means interposed in a circuit between the liquid-outlet and the liquid-inlet. | |
| 4 | On inlet: |
| This subclass is indented under subclass 2. The liquid-separating means operating on incoming liquids. | |
| 5 | Filtering: | ||
| This subclass is indented under subclass 2. The separator on the outlet including a filter.
SEE OR SEARCH CLASS:
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| 6 | Unitary structure: |
| This subclass is indented under subclass 5. The filter having structural relations with the contact apparatus other than pipe connections. | |
| 7 | Decanting: | ||
| This subclass is indented under subclass 2. The separator on the outlet comprising a decanter.
SEE OR SEARCH CLASS:
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| 8 | Unitary structure: |
| This subclass is indented under subclass 7. The decanter having structural relations with the contact apparatus other than pipe connections. | |
| 16 | MULTIPLE GAS: |
| This subclass is indented under the class definition. Two or more gases utilized differing from each other in some essential quality. | |
| 17 | Furnace-gas type: |
| This subclass is indented under subclass 16. At least one of the gases comprising products of combustion. | |
| 18.1 | MULTIPLE DIVERSE LIQUIDS: |
| This subclass is indented under the class definition. Apparatus providing means for handling plural different liquids. | |
| 18.2 | Water added to charge: |
| This subclass is indented under subclass 18.1. Apparatus having means to add water to a charge. | |
| 18.3 | Multiple fuels: |
| This subclass is indented under subclass 18.1. Apparatus providing means for handling plural liquid fuels. | |
| 18.4 | Antidetonant: |
| This subclass is indented under subclass 18.1. Apparatus having means to add an antidetonant fluid. | |
| 19 | FLUID DISTRIBUTION: | ||
| This subclass is indented under the class definition. Gas and liquid contact apparatus comprising special fluid-distributing
means, such as pumps, valves, pipes and receptacles.
SEE OR SEARCH CLASS:
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| 20 | Systems: |
| This subclass is indented under subclass 19. A plurality of gas and liquid contact apparatuses connected for conjoint operation. | |
| 21 | Series: |
| This subclass is indented under subclass 20. With connections permitting gases and liquids to pass successively from one contact apparatus to another. | |
| 22 | Gas connections: |
| This subclass is indented under subclass 21. With connections permitting gases only to pass successively from one contact apparatus to another. | |
| 23.1 | Parallel: |
| This subclass is indented under subclass 20. Apparatus with connections permitting the fluids to pass through contact apparatuses in parallel. | |
| 23.2 | Carburetors: |
| This subclass is indented under subclass 23.1. Apparatus adapted to mix fuel and air. | |
| 23.3 | Stratified charge: |
| This subclass is indented under subclass 23.2. Apparatus adapted to form both a rich mixture and a lean mixture to be supplied to different portions of an engine cylinder. | |
| 23.4 | Rotary engine: |
| This subclass is indented under subclass 23.2. Apparatus adapted to supply fuel to different portions of a rotary engine cylinder. | |
| 24 | Pumping: |
| This subclass is indented under subclass 19. Including use of pumps. | |
| 25 | Liquid operated: |
| This subclass is indented under subclass 24. With gas-pumps operated by energy derived from the contact liquids. | |
| 26 | Automatic control: |
| This subclass is indented under subclass 24. Operation of pumps automatically controlled. | |
| 27 | Liquid inlet: |
| This subclass is indented under subclass 26. Pump on the liquid-inlet. | |
| 28 | Gas and liquid: |
| This subclass is indented under subclass 24. Including pumps for both liquids and gases. | |
| 29 | Liquid circuit: |
| This subclass is indented under subclass 28. Including a circuit between the liquid outlet and inlet. | |
| 30 | Gas inlet: |
| This subclass is indented under subclass 24. Utilizing a pump on the gas-inlet only. | |
| 31 | Churn type: | ||
| This subclass is indented under subclass 30. Specially adapted for churning.
SEE OR SEARCH CLASS:
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| 32 | Rotary dasher: |
| This subclass is indented under subclass 31. Including a rotary dasher. | |
| 33 | Reciprocating dasher: |
| This subclass is indented under subclass 31. Including a reciprocating dasher. | |
| 34.1 | Liquid: |
| This subclass is indented under subclass 24. Apparatus comprising a liquid pump. | |
| 34.2 | Accelerator pump: |
| This subclass is indented under subclass 34.1. Apparatus adapted to pump fuel in response to operation of accelerator linkage. | |
| 34.3 | With thermostatic control: |
| This subclass is indented under subclass 34.2. Apparatus having means to control the quantity of liquid pumped dependent on temperature. | |
| 35 | Gas operated: | ||
| This subclass is indented under subclass 34.1. Pump operated by energy derived from contact-gases.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 36.1 | In circuit: |
| This subclass is indented under subclass 34.1. Apparatus having a pathway (circuit) between the liquid outlet and inlet. | |
| 36.2 | Carburetor: |
| This subclass is indented under subclass 36.1. Apparatus wherein a carburetor is provided in the circuit. | |
| 37 | Inlet: | ||
| This subclass is indented under subclass 34.1. Including a pump on liquid-inlet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 38 | Valved: |
| This subclass is indented under subclass 38. Including use of valves. | |
| 39.1 | Thermostatic: | ||
| This subclass is indented under subclass 38. Apparatus including thermostatic control of valves.
SEE OR SEARCH CLASS:
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| 39.2 | With carburetor expansible fluid actuating means: |
| This subclass is indented under subclass 39.1. Apparatus wherein the thermostatic actuating means comprises means (e.g., chamber, etc.) filled with an expansible fluid in a carburetor. | |
| 39.3 | With carburetor bimetallic actuating means: |
| This subclass is indented under subclass 39.1. Apparatus wherein a carburetor thermostatic actuating means is bimetallic. | |
| 39.4 | Carburetor spring linkage with temperature element: |
| This subclass is indented under subclass 39.1. Apparatus having spring means linkage between the thermostatic actuating means and a carburetor valve. | |
| 39.5 | Without carburetor choke means: |
| This subclass is indented under subclass 39.1. Apparatus wherein the thermostatic actuating means controls a carburetor valve other than, or in addition to, a choke valve on the inlet. | |
| 39.6 | With carburetor electrical heater: |
| This subclass is indented under subclass 39.1. Apparatus involving a carburetor including electrical heating means for supplying heat to the thermostatic actuating means. | |
| 40 | Multiple jet: |
| This subclass is indented under subclass 38. Adapted for controlling contact apparatus including a plurality of liquid-jets. | |
| 41.1 | Progressive: |
| This subclass is indented under subclass 40. Apparatus wherein the jets are operated successively. | |
| 41.2 | With parallel carbureting passages: |
| This subclass is indented under subclass 41.1. Apparatus with connectors permitting fluids to pass through contact apparatuses in parallel passages. | |
| 41.3 | With control of plural passages: |
| This subclass is indented under subclass 41.2. Apparatus with control of gas or mixture flow through at least two of the carbureting passages (e.g., includes carburetors with linkage connecting throttle valves in two or more barrels for progressive operation, etc.). | |
| 41.4 | Multiple jet manual control: |
| This subclass is indented under subclass 41.1. Apparatus with manual control of liquid flow through at least one of the jets. | |
| 41.5 | By-pass opening beyond throttle: |
| This subclass is indented under subclass 41.1. Apparatus wherein flow from at least one liquid jet discharges into gas or mixture flow downstream of a gas or mixture throttle valve (e.g., includes carburetor idle systems, etc.). | |
| 42 | Multiple valves: | ||
This subclass is indented under subclass 38. Comprising a plurality of valves controlling the fluids
at different points, such as the gas inlet and outlet, the liquid
inlet and outlet, gas and liquid by-pass, and at the place of contact.
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| 43 | Connected: |
| This subclass is indented under subclass 42. The two or more valves connected for simultaneous operation. | |
| 44.1 | Contact space: | ||
| This subclass is indented under subclass 43. Apparatus including a valve at the place of connected with
gas by-pass, gas-inlet, gas-outlet, or liquid-inlet valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 44.2 | Contact valve with hollow shaft supplying liquid: |
| This subclass is indented under subclass 44.1. Apparatus which includes a valve at the place of gas-liquid contact having a hollow shaft through which the liquid is supplied. | |
| 44.3 | Transversely reciprocating air or mixture valve: |
| This subclass is indented under subclass 44.1. Apparatus which includes an air or mixture valve that reciprocates transversely to the direction of the air or mixture flow. | |
| 44.4 | Suction operated: |
| This subclass is indented under subclass 44.3. Apparatus wherein the air or mixture valve is moved by suction usually engine, e.g., variable venturi type carburetor, etc. | |
| 44.5 | Longitudinally movable air or mixture valve: |
| This subclass is indented under subclass 44.1. Apparatus having an air or mixture valve that moves in a direction substantially parallel to the direction of mixture or air flow. | |
| 44.6 | Rotating air or mixture valve: |
| This subclass is indented under subclass 44.1. Apparatus having air or mixture valve movable in a rotatable motion. | |
| 44.7 | Off-center pivoted: |
| This subclass is indented under subclass 44.6. Apparatus wherein the air or mixture valve is pivoted off-center. | |
| 44.8 | Cylinder or plug-valve type: |
| This subclass is indented under subclass 44.6. Apparatus wherein the air or mixture valve is either of the plug valve type or forms part of a cylinder. | |
| 44.9 | Variable-shape passage: |
| This subclass is indented under subclass 44.1. Apparatus having means capable of changing the shape of the air intake conduit. | |
| 45 | Gas by-pass: |
| This subclass is indented under subclass 43. Including a gas by-pass valve connected with gas-inlet, gas-outlet, or liquid-inlet valve. | |
| 46 | With gas inlet: |
| This subclass is indented under subclass 45. Including a gas by-pass connected with gas-inlet valve. | |
| 47 | With gas outlet: |
| This subclass is indented under subclass 45. Including a gas by-pass connected with gas-outlet valve. | |
| 48 | With liquid inlet: |
| This subclass is indented under subclass 45. Including a gas by-pass connected with liquid-inlet valve. | |
| 49 | Liquid inlet: | ||
| This subclass is indented under subclass 43. Including a liquid-inlet valve connected with gas-inlet
or gas-outlet valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 50.1 | With gas inlet: |
| This subclass is indented under subclass 49. Apparatus with gas inlet valve means connected with the liquid inlet valve. | |
| 50.2 | Suction operated gas inlet valve: |
| This subclass is indented under subclass 50.1. Apparatus wherein the gas inlet valve is suction operated. | |
| 50.3 | Noncarburetor: |
| This subclass is indented under subclass 50.1. Apparatus not disclosed for mixing fuel and air. | |
| 51 | With gas outlet: |
| This subclass is indented under subclass 49. Including a liquid-inlet connected with gas-outlet valve. | |
| 52 | Gas inlet and outlet: |
| This subclass is indented under subclass 43. Including gas inlet and outlet valves. | |
| 53 | Contact space: | ||
| This subclass is indented under subclass 42. Including a valve at the place of contact with gas by-pass,
gas-inlet, gas-outlet, or liquid-inlet valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 54 | Gas by-pass: | ||
| This subclass is indented under subclass 42. Including a gas by-pass valve with gas-inlet, gas-outlet,
or liquid-inlet valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 55 | With gas inlet: | ||
| This subclass is indented under subclass 54. Including a gas by-pass and gas-inlet valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 56 | With gas outlet: | ||
| This subclass is indented under subclass 54. Including a gas by-pass and gas-outlet valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 57 | With liquid inlet: | ||
| This subclass is indented under subclass 54. Including a gas by-pass and liquid-inlet valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 58 | Liquid inlet: | ||
| This subclass is indented under subclass 42. Including a liquid-inlet valve and gas inlet or outlet valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 59 | With gas inlet: | ||
| This subclass is indented under subclass 58. Including a liquid-inlet and gas-inlet valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 60 | With gas outlet: | ||
| This subclass is indented under subclass 58. Including a liquid-inlet and gas-outlet valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 61 | Gas inlet and outlet: | ||
| This subclass is indented under subclass 42. Including gas inlet and outlet valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 62 | Contact space: | ||
| This subclass is indented under subclass 38. Including a valve at the place of contact.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 63 | Gas by-pass: | ||
| This subclass is indented under subclass 38. Including a gas by-pass valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| 64.1 | Gas inlet: |
| This subclass is indented under subclass 38. Apparatus including an inlet valve for gas. | |
| 64.2 | Anterior throttle: |
| This subclass is indented under subclass 64.1. Apparatus wherein the gas inlet valve is an anterior throttle. | |
| 64.3 | Pressure control: |
| This subclass is indented under subclass 64.1. Apparatus wherein the gas inlet valve is controlled by pressure responsive means. | |
| 64.4 | Suction operated: |
| This subclass is indented under subclass 64.1. Apparatus wherein the inlet valve is operated by suction means. | |
| 64.5 | Float control: |
| This subclass is indented under subclass 64.1. Apparatus wherein the gas inlet valve is controlled by float means. | |