1
Michael Ficco, Adrian Yap, Ernest Seah, Rajeshwari Karthikeyan: Device control via digitally stored program content. The DIRECTV Group, Georgann S Grunnbach, March 15, 2005: US06868292 (162 worldwide citation)

A method and system of controlling devices with digitally stored content. Devices such as home electronic appliances, lighting systems, heating, ventilating and air conditioning (HVAC) equipment, home security systems and home entertainment systems are controlled from a single, centralized device. A ...


2
Jeffrey L Parker, Edward Parker: Method and system for controlling a single zone HVAC supplying multiple zones. Parker Electronics, Arthur G Yeager, Earl L Tyner, June 5, 1990: US04931948 (107 worldwide citation)

An improved monitoring and control system for a heating, ventilating and air conditioning (HVAC) unit which provides zone control in plural zones in which each zone includes a thermostat which controls a damper for its zone. One thermostat is selected and programmed to function as a monitor or maste ...


3
Jeffrey R Meyer, Daniel Thomas Uhrich deceased: Flexible thermostat controller that permits various control point profiles when controlling multistage HVAC equipment. Honeywell, Robert B Leonard, August 15, 2000: US06101824 (85 worldwide citation)

A thermostat for use with multistage Heating, Ventilating and Air Conditioning (HVAC) plants where a proportional/integral control loop is present for each stage of the multistage HVAC plant. Filter constants, Ki and Kp as well as stage control points and interstage values can be set independently f ...


4
Daniel N Nikovski, Ajay Divakaran, Regunathan Radhakrishnan, Kadir A Peker: Detecting and diagnosing faults in HVAC equipment. Mitsubishi Electric Research Laboratories, Dirk Brinkman, Clifton D Mueller, Gene V Vinokur, October 28, 2008: US07444251 (78 worldwide citation)

A method and system detects and diagnoses faults in heating, ventilating and air conditioning (HVAC) equipment. Internal state variables of the HVAC equipment are measured under external driving conditions. Expected internal state variables are predicted for the HVAC equipment operating under the ex ...


5
John E Games, William W Bitterli, David M Healey: Energy conservative control of heating, ventilating, and air conditioning (HVAC) systems. United Technologies Corporation, Dominic J Chiantera, May 27, 1980: US04205381 (77 worldwide citation)

Electronic processing means, in combination with dedicated sensing apparatus is used to control the operation of an HVAC system which regulates the temperature in one or more temperature controlled spaces. The electronic processing means and associated sensing apparatus being readily adapted to exis ...


6
Jeffrey L Parker, Edward Parker: Single zone HVAC controlled for operation in multiple zone arrangement. Parker Electronics, Arthur G Yeager, July 23, 1985: US04530395 (69 worldwide citation)

A monitoring and control system for a heating, ventilating and air conditioning (HVAC) unit which provides zone control in plural zones in which each zone includes a control thermostat that is interfaced with the monitoring system so that each zone thermostat controls the HVAC unit as well as a damp ...


7
James L Day: Air blending apparatus for heating, ventilating and air conditioning (HVAC). Martin LuKacher, August 12, 1986: US04605160 (29 worldwide citation)

Apparatus for blending and destratification of outside and return air streams which are cooled or heated, as by fluid containing heat transfer coils, and discharged into a building. Gates control the flow and blending of outside and inside air in a casing in a region defined at its downstream end by ...


8
Robert K Hollenbeck: Draft inducer air flow control. General Electric Company, Ralph E Krisher Jr, May 23, 1995: US05418438 (27 worldwide citation)

A control circuit for a motor driving a fan for inducing a draft in the exhaust of a heating, ventilating and air conditioning (HVAC) system. The control circuit may be used in conjunction with either a variable pressure sensor or one or two discrete pressure sensors. A controller receives informati ...


9
Keith Lewis, Rick Scheuer, Conrad Miracle: HVAC protection system for automotive vehicles. L & L Products, Dobrusin & Thennisch PC, October 18, 2005: US06955593 (23 worldwide citation)

A protection system for a heating, ventilating and air conditioning (HVAC) system including one or more of a base, a shield and a deflector. The protection system is generally designed for preventing water and debris from flowing into the HVAC system.


10
William W Bitterli, John E Games, David M Healey: Energy conservative control of terminal reheat heating, ventilating, and air conditioning (HVAC) systems. United Technologies Corporation, Dominic J Chiantera, February 24, 1981: US04253153 (21 worldwide citation)

A terminal reheat HVAC system which regulates the temperature in a plurality of temperature controlled spaces by modulating the temperature of cool discharge air presented to each of the spaces from an air handler source, each space receiving the cool discharge air through an associated space distri ...



Click the thumbnails below to visualize the patent trend.