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Class Information
Number: 236/84
Name: Automatic temperature and humidity regulation > Motors > Fluid-operated > Relay > Electric
Description: Devices wherein the fluid-operated motor is controlled by an electrically-operated relay-valve, which is in turn controlled by the means responsive to the temperature to be regulated. The electric device must actually operate the relay-valve at least in one direction.










Patents under this class:

Patent Number Title Of Patent Date Issued
7854095 Electric tile modules Dec. 21, 2010
6915958 Linear proportional valve Jul. 12, 2005
6742716 Thermostat Jun. 1, 2004
6695217 Regulating valve Feb. 24, 2004
6481229 Refrigerating device Nov. 19, 2002
6343746 Motorized thermostatic device with backup thermostatic element Feb. 5, 2002
6290139 Hydraulically actuated mixing valve Sep. 18, 2001
6264111 Proportional-integral-derivative controller having adaptive control capability Jul. 24, 2001
6223993 Climate control device May. 1, 2001
5963458 Digital controller for a cooling and heating plant having near-optimal global set point control strategy Oct. 5, 1999
5934093 Servo device for regulating a refrigerant into a compressor Aug. 10, 1999
5634590 Direct digital control thermostat Jun. 3, 1997
5323961 Apparatus for controlling unit ventilators Jun. 28, 1994
5207379 Cascaded control apparatus for controlling unit ventilators May. 4, 1993
5114070 Pneumatic direct digital controller May. 19, 1992
RE33028 Electropneumatic transducer system Aug. 22, 1989
4848652 Vehicle engine coolant system and method of making the same Jul. 18, 1989
4705212 Method and apparatus for managing steam systems Nov. 10, 1987
4556169 On-off thermostat based modulating air flow controller Dec. 3, 1985
4527583 Electropneumatic transducer system Jul. 9, 1985
4524906 Temperature control valve and sensor/controller therefor Jun. 25, 1985
4506825 Solenoid operated damper blades Mar. 26, 1985
4500034 Electronic control arrangement for system powered HVAC terminal units Feb. 19, 1985
4456170 Control valve Jun. 26, 1984
4440066 Digital pneumatic modulator Apr. 3, 1984
4436245 Pneumatic control system, especially for vehicle heating systems Mar. 13, 1984
4401263 Pneumatic relay controlled transducer construction Aug. 30, 1983
4394958 Air flow and condition responsive damper Jul. 26, 1983
4383641 Electrically-controlled damper May. 17, 1983
4378199 Variable speed drive Mar. 29, 1983
4362268 Air conditioning system for an automotive vehicle compartment Dec. 7, 1982
4352452 Emergency controller for an air conditioning system of an automotive vehicle Oct. 5, 1982
4339076 Control system for automobile air conditioners Jul. 13, 1982
4328855 Method and apparatus for controlling automobile air conditioners May. 11, 1982
4320870 Temperature control systems Mar. 23, 1982
4313561 Temperature control system and thermally responsive electro-vacuum relay therefor Feb. 2, 1982
4262738 Air conditioning apparatus for vehicle Apr. 21, 1981
4261509 Pneumatic switch control for pneumatic actuator in air conditioning control systems Apr. 14, 1981
4243173 Pneumatic optimizer Jan. 6, 1981
4183397 Vehicle air conditioning device Jan. 15, 1980
4147205 Vacuum actuated automatic temperature control system with actuator pressure signal feedback Apr. 3, 1979
4095741 Proportional electrical control system Jun. 20, 1978
4065052 Dual action control mechanism Dec. 27, 1977
3987642 Control valve for vehicle air conditioning systems Oct. 26, 1976











 
 
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