Patents by Inventor Donald L. Butler

Donald L. Butler 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).

  • Patent number: 4531382
    Abstract: This invention is a cooling device for cans and similar containers and is specifically designed for installation where floor space is either limited or at a premium. Additionally, there is a unique liquid circulation system which is extremely effective in cooling and yet low in energy consumption.
    Type: Grant
    Filed: August 18, 1983
    Date of Patent: July 30, 1985
    Assignee: Aeroglide Corporation
    Inventors: Donald L. Butler, Thomas E. Martin
  • Patent number: 4157642
    Abstract: The device of the present invention comprises a fruit catch frame for pivotal attachment to a conveyor trailer which conveys fruit from the catch frame into a large receptacle to be deposited in the load carrying body of a truck. Fruit, particularly of the citrus variety such as oranges, is often automatically dislodged from orchard trees in large quantities. The catch frame is horizontally positioned under a fruit tree to catch the falling fruit and includes a central conveyor portion, an outer portion, hydraulically operable, between extended and retracted positions and a pair of pivotal, opposed side wing portions. The outer and side wing portions are operable to upwardly, outwardly angled positions to funnel fruit falling thereon onto the central conveyor portion for movement onto the conveyor trailer. The surfaces of the outer and side wing portions are cushioned to absorb the shock of the falling fruit to prevent injury thereto.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: June 12, 1979
    Assignee: American Citrus Machinery Inc.
    Inventor: Donald L. Butler
  • Patent number: 4077540
    Abstract: The present invention pertains to a device which normally supports a plurality of relatively large receptacles thereatop in a stacked, nested relation to a receptacle carriage and dispenser frame. When the carriage and dispenser frame is actuated in a first direction, the stack is conditioned to permit the lowermost receptacle to be dispensed downwardly onto a support frame. Actuation of the carriage and dispenser frame in a second direction dispenses the lowermost receptacle onto the support frame which is simultaneously elevated to a position to be filled with a product such as fruit from a conveyor. Subsequent actuation of the carriage and dispenser frame in the first direction lowers the support frame to discharge the receptacle thereon onto the ground and simultaneously reconditions the balance of the stack to discharge the lowermost container thereof on the next operation of the carriage and dispenser frame in the second direction.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: March 7, 1978
    Inventor: Donald L. Butler
  • Patent number: RE32280
    Abstract: This invention is a cooling device for cans and similar containers and is specifically designed for installation where floor space is either limited or at a premium. Additionally, there is a unique liquid circulation system which is extremely effective in cooling and yet low in energy consumption.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: November 11, 1986
    Inventors: Donald L. Butler, Thomas E. Martin
  • Patent number: D287014
    Type: Grant
    Filed: July 19, 1983
    Date of Patent: December 2, 1986
    Inventors: Donald L. Butler, Thomas E. Martin