1
Gregory K Beaverson, Bart A Smith: System and method for controlling an HVAC system using a flash mini-card. York International Corporation, Finnegan Henderson Farabow Garrett & Dunner L, December 18, 2001: US06330806 (107 worldwide citation)

A heating, ventilation, and air-conditioning (HVAC) control system and method for controlling a device, a subsystem, and/or a process using a flash mini-card. Preferably, the present invention is directed to an HVAC control system and method for controlling a chiller and the devices and subsystems a ...


2
John P Kettler, James A Reese: Control system for air quality and temperature conditioning unit with high capacity filter bypass. York International Corporation, Kokjer Kircher Bowman & Johnson, January 7, 1997: US05590830 (96 worldwide citation)

An air conditioning unit is provided with a high capacity filtration system for removing pollutants from supply air, typically return air which has been recirculated from the conditioned area. A filter bypass passage and suitable flow control devices are provided so that supply air, typically fresh ...


3
Clair Ernest Erdman Jr: Remote monitoring diagnostics. York International Corporation, McNees Wallace & Nurick, October 18, 2005: US06955302 (80 worldwide citation)

A system for remotely monitoring operations of an HVAC system such as a chiller system having a control center, or a rooftop unit. The system utilizes a remote monitoring unit (RMU) located on-site. The RMU is in one-way communication with the component of the air conditioning system and receives da ...


4
Dean K Norbeck: Automated part procurement and service dispatch. York International Corporation, McNees Wallace & Nurick, September 9, 2008: US07424345 (63 worldwide citation)

A method for repairing an HVAC system is disclosed. The method includes monitoring a plurality of sensors positioned throughout the HVAC system and receiving data associated therewith, determining whether the data received from the plurality of sensors is within corresponding predetermined operation ...


5
Gregory Ralph Harrod, Jeffrey Lee Tucker: Method and apparatus to prevent low temperature damage using an HVAC control. York International Corporation, McNees Wallace & Nurick, August 1, 2006: US07085626 (57 worldwide citation)

A heating control method is provided for a multi-stage heating system including a heating circuit having a compressor, a condenser and an evaporator. An auxiliary heater is provided that is selectively controlled independently of the heating circuit. During a heating cycle in which the ambient outsi ...


6
Frank E Wills: Pulse width modulated inverter system for driving single phase a-c induction motor. York International Corporation, Finnegan Henderson Farabow Garrett & Dunner, November 10, 1987: US04706180 (56 worldwide citation)

A substantially perfect single phase sinusoidal shaped voltage waveform may be generated for driving a single phase a-c induction motor by employing a sinusoidally weighted pulse width modulated signal to switch a pair of solid state power switches on and off in alternation in order to connect the m ...


7
Gregory R Harrod, Jeffrey L Tucker: Method and apparatus to sense and establish operation mode for an HVAC control. York International Corporation, McNees Wallace & Nurick, December 14, 2010: US07849698 (51 worldwide citation)

A method for configuring a controller for an HVAC system. The method comprises providing a closed loop refrigerant system and a control system to control the closed loop refrigerant system. The control system comprises a controller, an input device, and a processor including a signal sensing circuit ...


8
Ronald R Rayburn, Neil A Hughes: Control for a heating ventilating and air conditioning unit. York International Corporation, Finnegan Henderson Farabow Garrett & Dunner L, December 10, 2002: US06491094 (50 worldwide citation)

A control system for a heating, ventilating, and air conditioning unit having a heating stage, a cooling stage, and an economizer is provided. The system includes a memory configured to store a first predetermined temperature range and a second predetermined temperature range. The system also includ ...


9
Frank E Wills, Harold R Schnetzka II: AC motor drive system with a two phase power supply. York International Corporation, Finnegan Henderson Farabow Garrett & Dunner, June 8, 1993: US05218283 (47 worldwide citation)

A motor drive system for driving a conventional single phase PSC motor from a two-phase power source which allows for convenient motor direction reversal. In one embodiment, the PSC motor is supplied from a three-phase inverter that is controlled to generate two-phase power. In another embodiment, t ...


10
Steven N Roy, John F Judge, Harold R Schnetzka: Liquid-cooled power semiconductor device heatsink. York International Corporation, Brian T Sattizahn, Carmen Santa Maria, McNees Wallace & Nurick, August 13, 2002: US06434003 (46 worldwide citation)

The present invention relates to a cold plate for cooling electronic components comprising a base having a top surface onto which at least one electronic component is to be placed; a cooling well formed in the top of the base and open at the top; a feed channel formed in the base for carrying fluid ...