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Class Information
Number: 236/49.3
Name: Automatic temperature and humidity regulation > Ventilator type > Electrically actuated
Description: Device wherein the means operates the air flow control device by way of electricity.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Patent Number Title Of Patent Date Issued
4874127 Climate control apparatus Oct. 17, 1989
4871011 Air-conditioning equipment for vehicle Oct. 3, 1989
4867376 Air control system Sep. 19, 1989
4852637 Thermostatic controlled system Aug. 1, 1989
4848653 Ridge vent with shape-memory actuated heat valve Jul. 18, 1989
4844149 Warm-up/changeover valve or proximity switch Jul. 4, 1989
4838484 Variable volume air conditioning system with velocity readout at the thermostat Jun. 13, 1989
4838483 Vav valve control with transducer tolerance compensation Jun. 13, 1989
4838345 Combined air conditioning and ventilation assembly Jun. 13, 1989
4834283 Automotive air conditioning system May. 30, 1989
4834282 Device for use with flue dampers May. 30, 1989
4830274 Pressure independent VAV valve with pressure dependent backup May. 16, 1989
4830095 Temperature control system for air conditioning system May. 16, 1989
4828168 Method of controlling duct-type air conditioning system May. 9, 1989
4824012 Air flow damper control system Apr. 25, 1989
4821526 Air conditioning apparatus Apr. 18, 1989
4819442 Refrigerator system, control device therefor and methods of making and operating the same Apr. 11, 1989
4817912 Bi-metal operator for smoke, fire and air control damper Apr. 4, 1989
4817865 Ventilation system for modular electronic housing Apr. 4, 1989
4811897 Duct type air conditioning system Mar. 14, 1989
4809593 Portable fan device for forced air heating Mar. 7, 1989
4807444 Air flow control device Feb. 28, 1989
4805835 Methods and apparatus for the control of smoke and fire in buildings Feb. 21, 1989
4804140 Solar powered ventilating system for vehicles Feb. 14, 1989
4800951 Air conditioner system for automobiles with rear seat occupant sensor Jan. 31, 1989
4795089 Room air conditioner Jan. 3, 1989
4795088 Air conditioning system Jan. 3, 1989
4795090 Air-conditioning installation for vehicles Jan. 3, 1989
4783972 N.sub.2 tunnel freezer Nov. 15, 1988
4782999 Air conditioning apparatus and grille control method thereof Nov. 8, 1988
4779671 Cooling, heating and ventilation system Oct. 25, 1988
4776385 Air ventilation control system Oct. 11, 1988
4757944 Control apparatus of air conditioner for automobiles Jul. 19, 1988
4756473 Cooling method control system for electronic apparatus Jul. 12, 1988
4754919 Air conditioning apparatus Jul. 5, 1988
4754697 Portable fan device for forced air heating Jul. 5, 1988
4742475 Environmental control system May. 3, 1988
4738116 Apparatus for deflecting the direction of the wind in an air conditioner Apr. 19, 1988
4735057 Switching circuit for a refrigerator control Apr. 5, 1988
4734012 Blower speed control Mar. 29, 1988
4733541 Constant cooling circuit and system Mar. 29, 1988
4732318 Velocity controlled forced air temperature control system Mar. 22, 1988
4722475 Environmental control system with condition responsive timer and method Feb. 2, 1988
4716957 Duct type multizone air conditioning system Jan. 5, 1988
4711295 Air conditioner system for automobiles Dec. 8, 1987
4711394 Multiple-unit HVAC energy management system Dec. 8, 1987
4705457 Monitoring of fluid flow Nov. 10, 1987
4702412 Zone control apparatus for central heating and/or cooling systems Oct. 27, 1987
4700887 Environmental control system for poultry houses Oct. 20, 1987
4698980 Apparatus for controlling vehicle air conditioner Oct. 13, 1987

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