11
Lakhi Nandlal Goenka: HVAC system for hybrid vehicles using thermoelectric devices. BSST, Knobbe Martens Olson & Bear, August 24, 2010: US07779639 (16 worldwide citation)

A heating, ventilating and air conditioning (HVAC) system for a hybrid vehicle is disclosed, the HVAC system including at least one thermoelectric device for providing supplemental heating and cooling for air supplied to a passenger compartment of the vehicle. In some embodiments, the HVAC system ha ...


12
Jerry H Schumacher: Self-renewing air filter. Sturm & Fix, January 18, 2005: US06843834 (15 worldwide citation)

The replacement of filters for Heating, Ventilating, and Air Conditioning (HVAC) is often time-consuming and labor-intensive. Organizations having responsibility for many apartment or dormitory units can spend a significant fraction of their man-hours replacing such filters. A novel approach to redu ...


13
James L Day: Hard wired programmable controller especially for heating ventilating and air conditioning (HVAC systems). James L Day Co, Martin Lukacher, March 30, 1993: US05198809 (13 worldwide citation)

Inputs are programmably interfaced and interlocked with output so that the state of the outputs and the operation of equipment connected thereto depends on the hierarchy or priority (control strategy) which is programmed into the controller. The inputs may be contacts (switch closures) of switches w ...


14
Wai leung Ha, Kairy Kai Lei, Gordon Qian, Hao hui Huang: Thermostat status notification through a network. Computime, Banner & Witcoff, May 10, 2011: US07941530 (12 worldwide citation)

The present invention provides apparatuses and computer readable media for obtaining status information from a heating, ventilating, and air conditioning (HVAC) system and sending the status information to a remote networked device using a data container. A thermostat obtains status information from ...


15
Ronald Richard Rayburn, Stephen Blake Pickle, Stephen Carl Wilson: Method and system for controlling an economizer. York International Corporation, Finnegan Henderson Farabow Garrett & Dunner L, October 9, 2001: US06298912 (12 worldwide citation)

A method and system for controlling the temperature of air returned to a conditioning unit in a zoned system is disclosed. The system includes a heating, ventilating, and air conditioning (HVAC) unit that has an economizer. The HVAC unit is connected to a plurality of zones by a supply duct and a re ...


16
James L Day, Terry D Seim: Variable potentiometer motor controller. James L Day Co, Martin LuKacher, November 20, 1984: US04484122 (10 worldwide citation)

A controller for operating devices adapted for motor control, such as dampers, valves and the like in a heating, ventilating and air conditioning (HVAC) system interfaces with a serial link which may carry control signals for operating a multiplicity of controllers on a time division multiple access ...


17
Zeigler Terry A, Elias Eric, Barreau Christophe: Vehicle air conditioning and heating system providing engine on and off operation. Bergstrom, October 29, 2008: EP1985481-A2 (10 worldwide citation)

A heating, ventilating and air conditioning (HVAC) system for use in an over-the-road or off road vehicle (102) is provided. The HVAC system may be operated regardless of the operational state of the engine. That is, the HVAC system may be operated to condition the interior compartments (128,130) of ...


18
Ormonde G Durham III: Opto-programmed HVAC controller. OGD V HVAC, Ostrolenk Faber, September 14, 2010: US07797080 (9 worldwide citation)

A Heating, Ventilating, and Air Conditioning (HVAC) Management and Control System (CS) that provides “Closed Loop Adaptive Climate Control” of heating, cooling, ventilation or any combination thereof to an occupied space using standard AC electric induction motor(s) connected to a fan and other moto ...


19
Thomas A Trill: Air flow control valve for a HVAC module. General Motors Corporation, Patrick M Griffin, July 20, 1993: US05228475 (9 worldwide citation)

An air flow control valve assembly for selectively directing air flow through the air chambers of a heating, ventilating and air conditioning (HVAC) module. The assembly includes a support arm rotatably secured at one end to a flat plane valve and defining a first rotation axis therewith, and a seco ...


20
Ardeean Scoccia, Garrett Wade Hoehn: Dual functional drain for a heating, ventilating, and air conditioning assembly. Delphi Technologies, Patrick M Griffin, July 23, 2002: US06422301 (9 worldwide citation)

A heating, ventilating, and air conditioning (HVAC) assembly for a motor vehicle includes an evaporator core for cooling air and a heater core for heating air. A heater casing of the HVAC assembly surrounds the heater core. A drain portion of the HVAC assembly extends from the heater casing and incl ...



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