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Class Information
Number: 236/1B
Name: Automatic temperature and humidity regulation > Miscellaneous > Zone control for heating and cooling medium
Description:










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
5725052 Dual zone air-conditioning system for motor vehicles with improved air flow rate Mar. 10, 1998
5715997 Air temperature control apparatus for vehicle use Feb. 10, 1998
5701750 Zone demand controlled dual heat pump system and controller therefor Dec. 30, 1997
5682949 Energy management system Nov. 4, 1997
5642856 Air conditioner Jul. 1, 1997
5622221 Integrated zoning circulator with priority controller Apr. 22, 1997
5557555 Circuit for regulating the air conditioning of premises Sep. 17, 1996
5544697 Differential temperature control Aug. 13, 1996
5501265 Fluid flow control for HVAC system with valve position readjustment to equalize conditioning rates in multiple zones Mar. 26, 1996
5495887 Temperature control system and controller therefor Mar. 5, 1996
5413165 Temperature control system for multi-story building May. 9, 1995
5361984 Device for selective climate control in vehicle cabins Nov. 8, 1994
5344069 Air conditioning apparatus for distributing primarily-conditioned air to rooms Sep. 6, 1994
5325286 Micro-computer operated control device for air-conditioning system Jun. 28, 1994
5303767 Control method and system for controlling temperatures Apr. 19, 1994
5289868 Absorption chiller heater and unit-type air conditioning system Mar. 1, 1994
5249596 Residential heating and air conditioning barometric bypass damper Oct. 5, 1993
5245835 Method and apparatus for interior space conditioning with improved zone control Sep. 21, 1993
5181653 Residential heating and air conditioning control system Jan. 26, 1993
5179524 Fan-powered mixing box assembly Jan. 12, 1993
5161608 Air conditioning system for a building Nov. 10, 1992
5103896 Air-conditioning system and operation method thereof Apr. 14, 1992
5101639 Air handling system utilizing direct expansion cooling Apr. 7, 1992
5076346 Air conditioner Dec. 31, 1991
5039008 Air conditioner Aug. 13, 1991
4928750 VaV valve with PWM hot water coil May. 29, 1990
4909308 Changeover valve for a central air conditioning unit Mar. 20, 1990
4886110 HVAC zone control system Dec. 12, 1989
4884214 Thermostat Nov. 28, 1989
4864274 Remote reading thermostat Sep. 5, 1989
4856710 Dual air conditioner for a vehicle Aug. 15, 1989
4843832 Air conditioning system for buildings Jul. 4, 1989
4843084 Thermostat control system Jun. 27, 1989
4830274 Pressure independent VAV valve with pressure dependent backup May. 16, 1989
4830095 Temperature control system for air conditioning system May. 16, 1989
4829447 Bypass controller and bypass system May. 9, 1989
4819716 Advanced zone damper system Apr. 11, 1989
4805519 Control system Feb. 21, 1989
4716957 Duct type multizone air conditioning system Jan. 5, 1988
4718021 Technique for fan cycling to maintain temperature within prescribed limits Jan. 5, 1988
4703747 Excess air control Nov. 3, 1987
4673029 Zoned heating and air conditioning system Jun. 16, 1987
4646964 Temperature control system Mar. 3, 1987
4630670 Variable volume multizone system Dec. 23, 1986
4630221 Zone condition controller and method of using same Dec. 16, 1986
4616325 Zone condition controller and method of using same Oct. 7, 1986
4615481 Air conditioner Oct. 7, 1986
4574283 Data transmission system for use in an air conditioning control apparatus Mar. 4, 1986
4549601 Variable volume multizone system Oct. 29, 1985
4531573 Variable volume multizone unit Jul. 30, 1985

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