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Class Numbers & Titles | Class Numbers Only | USPC Index | International | HELP |
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Class 236 | AUTOMATIC TEMPERATURE AND HUMIDITY REGULATION |
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1R | MISCELLANEOUS |
1A | Burner controls not elsewhere classified in class |
1B | Zone control for heating and cooling medium |
1C | Heating and cooling controls |
1D | Stoker controls |
1E | Multistage controls |
1F | Piezoelectric crystal and other electric unit temperature controls |
1G | Heat conserving damper control |
1H | Burner controls with automatic cutoff |
2 | INCUBATOR TYPE OF HEATER |
6 | BROODER TYPE OF HEATER |
7 | SADIRON TYPE |
8 | ATOMIZER TYPE OF BURNER |
9R | COMBINED HEATER AND APARTMENT CONTROLLED |
10 | HOT-AIR FURNACE |
12.1 | MIXING FLUID OF DISSIMILAR TEMPERATURE |
12.11 | Mixing valve with temperature motive means |
12.13 | Including bypass |
12.14 | Fluid from only one supply is controlled |
12.15 | Including separate relatively movable valve for each fluid supply |
12.16 | Having oscillating or reciprocating valve |
12.17 | Valving member moves about an axis |
12.2 | Tubular valve member |
12.21 | Axially spaced flow control faces |
12.23 | Ports closed by valve action |
13 | Plenum type |
14 | COMBINED BOILER AND FURNACE CONTROLLED |
15R | FURNACE CONTROLLED |
15A | Domestic oven controls |
15BR | Commercial furnace controls |
15BA | Solid fuel burning |
15BB | Product and furnace temperature sensor |
15BC | With conveyor thru furnace |
15BD | Air and fuel control |
15BE | Recuperator, gas turbine, melting furnace |
15BF | Specialized furnace or heater, e.g., crystal growing |
15BG | Timer or program |
15C | Furnace controlled responsive to pressure |
15E | Furnace controlled responsive to combustion products composition |
16 | COMBINED DRAFT AND CHECK CONTROL |
EXCHANGE HEATERS |
20R | CLOSED FLUID HEATERS |
21R | Safety cut-out |
22 | Radiator type |
Combined thermostat and flow controlled |
24.5 | Flow and pressure controlled |
25R | Flow controlled |
26R | Pressure-operated |
27 | With balancing pressure chamber |
28 | Stroke retarding |
29 | Relay, puppet |
30 | Bourdon type |
31 | Float |
26A | Gas burner controls |
26B | Pressure responsive means controls draft |
26C | Pressure responsive elements per se |
26D | Pressure responsive means controls forced draft |
26E | Pressure responsive means controls oil burner |
26F | Pressure responsive means controls fluid coupling |
Thermostatic |
20A | Top burner control |
34 | COOLING RADIATOR |
36 | HEATING RADIATOR |
44R | HUMIDITY CONTROL |
44A | Humidity control per se |
44B | With evaporator cooling spray |
44C | Humidity and temperature control |
44E | With electrical conductive element |
45 | DRAFT-OPERATED |
46R | WITH TIMING ELEMENT |
46A | Diverse sensor |
46B | Stoker control |
46C | Controlled diverse means |
46D | Domestic oven |
46E | Hot air furnace |
46F | Timer other than clock |
47 | HIGH AND LOW TEMPERATURE ALTERNATE |
48R | SNAP-ACTING |
49.1 | VENTILATOR TYPE |
49.2 | Responsive to fire or smoke |
49.3 | Electrically actuated |
49.4 | Pneumatically actuated |
49.5 | Mechanical linkage actuated |
50 | LIQUID VALVE |
51 | DISTANCE-ADJUSTED |
52 | FLOAT-OPERATED |
TRAPS |
AIR-RELIEF VALVES |
67 | MOTORS |
Relay |
68R | Auxiliary heater |
68A | Heated expansible chamber vaporizer liquid injected by thermostat |
68B | Auxiliary heater applied to main temperature sensing means |
68C | Auxiliary heater applied to control device away from main temperature sensor |
68D | Thermo-controlled pilot burner operates a heat motor to actuate main fuel valve |
69 | Pyrometer galvanometer |
71 | Balanced |
73 | Continuous drive |
74R | Electric |
75 | Reciprocating or oscillating |
76 | Step-by-step |
77 | Vibrating arm |
78R | Relay |
78A | Plural control elements |
78B | Plural temperature sensors |
78C | Reversible motor |
78D | Proportional control |
74A | Electric motor driven pump |
Fluid-operated |
79 | Relay |
88 | Magnetic release |
90 | Thermal release |
THERMOSTATIC |
91R | Hot and cold |
91A | Nonhabitable enclosure, e.g., incubator |
91B | With oil burner |
91C | With diverse sensor, e.g., humidity, pressure |
91D | Heating and cooling |
91E | Plural room or plural outside thermostat |
91F | With at least one temperature sensor for temperature modifying media |
91G | Current modifying sensor |
92R | With pressure control |
92A | Combined with fuel gas pressure regulator |
92B | Refrigeration expansion valves |
92C | Pressure- and temperature-actuated relief valves |
92D | Pressure- and temperature-actuated valves associated with carburetors |
93R | In fluid controlled |
94 | With indicator or alarm |
Flue or heater attached |
97 | Cooled element |
98 | Fluid transmission |
99R | Expanding fluid |
100 | Float or piston operation |
99A | Nontemperature sensor |
99B | Nonvalving device |
99C | External and internal sensors |
99D | Heat shield |
99E | Plural temperature sensors |
99F | Pivoted valve |
99G | Lever |
99H | Liquid fuel feed |
99K | Wax thermostat |
99J | In flow line |
101R | Expanding solid |
FOREIGN ART COLLECTIONS | ||
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
DIGESTS | ||
DIG1 | ADJUSTABLE LEVER |
DIG2 | FAIL SAFE |
DIG3 | SAFETY ELECTRIC |
DIG4 | SAFETY VACUUM |
DIG5 | FUSIBLE |
DIG6 | CLAMP ON |
DIG7 | COIL BULB |
DIG8 | COMPUTER |
DIG9 | FAN CONTROL |
DIG10 | FILLING |
DIG11 | EXPANDIBLE FLUID |
DIG12 | HEAT CONDUCTOR |
DIG13 | HUMIDITHERMOSTAT |
DIG14 | INTERMITTANT CONTROL |
DIG15 | PHOTOCELL |
DIG16 | RELIEF SPRING |
DIG17 | SPRING RATE COMPENSATOR |
DIG18 | RUBBER |
DIG19 | VENTILATED THERMOSTAT |
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