51
Joseph G Marcinkiewicz, Charles E Green, Michael I Henderson: System and method for permanent magnet motor control. Emerson Climate Technologies, Harness Dickey & Pierce, April 25, 2017: US09634593 (1 worldwide citation)

A method of operating an electric motor is disclosed. The method includes: starting the electric motor in an open loop control mode; operating an estimator that estimates operating conditions of the electric motor; and, while the electric motor is in the open loop control mode, evaluating a first pa ...


52
Lakhi Nandlal Goenka, Lon Edward Bell: HVAC system for a vehicle. Gentherm Incorporated, Knobbe Martens Olson & Bear, August 11, 2015: US09103573 (1 worldwide citation)

A heating, ventilating and air conditioning (HVAC) system for a 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 to maximize an efficiency of operation of the v ...


53
Steven E Nielsen, Curtis Chambers, Jeffrey Farr, Greg Block: Methods and apparatus for assessing risks associated with locate request tickets based on historical information. CertusView Technologies, Cooley, May 9, 2017: US09646275 (1 worldwide citation)

Locate and/or marking operations involve detecting and/or marking a presence or an absence of at least one underground facility within a dig area, wherein at least a portion of the dig area is planned to be excavated or disturbed during excavation activities. One or more attributes of a locate and/o ...


54
Ronald Paul Barrett: Thermally adaptive enclosure vent. Barret Aerospace Technologies, Hovey Williams, February 27, 2018: US09903607 (1 worldwide citation)

An enclosure vent is operable to be mounted to a building that presents an interior space and to move in response to a change in vent temperature. The vent includes a vent frame and a laminated composite vent panel. The vent panel includes outer and inner panel layers and an intermediate connecting ...


55
Aaron G Hill: Ventilation system for a power machine. Clark Equipment Company, John D Veldhuis Kroeze, Westerman Champlin & Koehler P A, July 18, 2017: US09707821 (1 worldwide citation)

A ventilation system for a power machine is disclosed. The ventilation system includes a first ductwork section and a second ductwork section. An intermediate unsealed cavity is positioned between the first ductwork section and the second ductwork section. A source of air having a primary fan is pro ...


56
Donald Cyrus Baker: Apparatus and method for evacuating contaminants and water vapor from an area above a swimming pool with integral deck drain. Meunier Carlin & Curfman, January 10, 2017: US09540836 (1 worldwide citation)

An apparatus captures and evacuates air from an area above a body of liquid, particularly a swimming pool. The apparatus exhausts the contaminants and water vapor to an area outside of an enclosure housing the swimming pool. A perimeter deck drain assembly extends around the pool and is connected to ...


57
Robert J Mowris, John Walsh: Fan controller. Kenneth L Green, Averill & Green, June 6, 2017: US09671125 (1 worldwide citation)

Method for controlling an HVAC ventilation fan in heating or cooling mode and varying the fan-off time delay as a function of heat source or cool source operational time. Method for increasing heater ventilation fan speed from the low speed used for heating to the high speed used for cooling. Method ...


58
Keith Lewis, Rick Scheuer, Conrad Miracle: HVAC protection system for automotive vehicles. Zephyros, Dobrusin & Thennisch PC, October 2, 2007: US07275985 (1 worldwide citation)

There is disclosed a protection system for a heating, ventilating and air conditioning (HVAC) system. The protection system includes 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.


59
Nicholas L Lack: Filter with multiple sections of different media. Davis M Chin Jr, Davis Chin, August 30, 2011: US08007555 (1 worldwide citation)

A panel air filter assembly, for use in heating, ventilating and air conditioning (HVAC) systems, which has a single filter element with multiple portions. The single filter element is sectioned into substantially equally-dimensioned and separate filter portions. Each of the filter portions includes ...


60
Rakesh Goel, Ammar Kailani: Ultraviolet lamp with absorptive barrier. Lennox Manufacturing, July 28, 2009: US07566359 (1 worldwide citation)

A heating, ventilating and air conditioning (HVAC) system, comprising a heat exchanger plenum having a surface located therein that is susceptible to degradation upon exposure to light, and a light bulb located within the plenum. In one embodiment, the light bulb has a side directed toward the surfa ...