Patents by Inventor Eugene Holt

Eugene Holt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and system for generating electrical power from a wheeled engine-driven vehicle for powering a transport refrigeration unit
    Patent number: 10428844
    Abstract: A method and system for generating electrical power from a wheeled engine-driven vehicle. At least two hydraulic pumps are provided for pumping hydraulic fluid though respective hydraulic fluid outputs of the hydraulic pumps. A first one of the hydraulic pumps is driven by the engine of the vehicle and a second one of the hydraulic pumps is driven by one or more of the road-wheels of the vehicle. Hydraulic fluid pumped by the first and second hydraulic pumps is input in parallel to a hydraulic motor.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: October 1, 2019
    Inventor: Eugene Holt
  • Hydraulic power unit for a refrigeration system
    Patent number: 7086241
    Abstract: A hydraulic power unit for a refrigeration system. According to one aspect of the invention, the power unit is provided for driving the refrigeration system of a truck having an engine for propelling the truck and a power take off from the engine. The refrigeration system has a compressor for compressing a refrigerant and an evaporator which is cooled by the compressed refrigerant. The power unit comprises a pump, a compressor motor, and a hydraulic circuit. The pump is adapted for pumping hydraulic fluid and for connection to the power take off for driving the pump. The compressor motor is adapted for driving the compressor in response to receiving hydraulic fluid from the pump. The hydraulic circuit is adapted for conducting the hydraulic fluid from the pump to the compressor motor and for conducting the hydraulic fluid from the compressor motor back to the pump.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: August 8, 2006
    Assignee: HydraCool, Inc.
    Inventor: Eugene Holt
  • Hydraulic power unit for a refrigeration system
    Publication number: 20040200230
    Abstract: A hydraulic power unit for a refrigeration system. According to one aspect of the invention, the power unit is provided for driving the refrigeration system of a truck having an engine for propelling the truck and a power take off from the engine. The refrigeration system has a compressor for compressing a refrigerant and an evaporator which is cooled by the compressed refrigerant. The power unit comprises a pump, a compressor motor, and a hydraulic circuit. The pump is adapted for pumping hydraulic fluid and for connection to the power take off for driving the pump. The compressor motor is adapted for driving the compressor in response to receiving hydraulic fluid from the pump. The hydraulic circuit is adapted for conducting the hydraulic fluid from the pump to the compressor motor and for conducting the hydraulic fluid from the compressor motor back to the pump.
    Type: Application
    Filed: May 28, 2004
    Publication date: October 14, 2004
    Inventor: Eugene Holt
  • Outer shell for a transport refrigeration system
    Patent number: D543219
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: May 22, 2007
    Inventors: Donald E. Heath, Eugene Holt, Mark A. Champion