Patents by Inventor John M. Duddridge

John M. Duddridge 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).

  • Food slicers
    Patent number: 4312252
    Abstract: Apparatus for use with a food slicer comprising a conveyor for location adjacent to the said slicer and adapted to receive slices of food as they are cut by the slicer; a pump for generating hydraulic pressure, a motor driven by said hydraulic pressure; passageways between said pump and said motor; means for drivingly connecting said motor to said conveyor; a flow limiting valve in the passageway between the pump and the motor for limiting the speed at which the said motor drives said conveyor; and means for periodically increasing the fluid flow to the motor temporarily to accelerate said motor.
    Type: Grant
    Filed: February 1, 1979
    Date of Patent: January 26, 1982
    Assignee: Danepak Ltd.
    Inventor: John M. Duddridge
  • Food slicers
    Patent number: 4181053
    Abstract: Apparatus for use with a food slicer comprising a conveyor for location adjacent to the said slicer and adapted to receive slices of food as they are cut by the slicer; a pump for generating hydraulic pressure, a motor driven by said hydraulic pressure; passageways between said pump and said motor; means for drivingly connecting said motor to said conveyor; a flow limiting valve in the passageway between the pump and the motor for limiting the speed at which the said motor drives said conveyor; and means for periodically increasing the fluid flow to the motor temporarily to accelerate said motor.
    Type: Grant
    Filed: August 25, 1977
    Date of Patent: January 1, 1980
    Assignee: Danepak Ltd.
    Inventor: John M. Duddridge