Patents by Inventor John E. Hargreaves

John E. Hargreaves 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: 5407316
    Abstract: A multi-level cargo container storage rack. A container transport aisle extends through the rack from top to bottom and between opposed ends of the rack. A plurality of container storage positions are provided on each level and on each side of the aisle. A container elevator vertically displaces containers within the aisle to a selected level. A container transfer mechanism transfers containers between the elevator and a selected side of the selected level. The storage positions on each side of the aisle are displaceable toward or away from the aisle, along each of the levels. A programmed computer drives the system.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: April 18, 1995
    Inventors: Bernard J. Coatta, John E. Hargreaves, Terry J. Coatta, Raymond J. Smithson
  • Patent number: 4530535
    Abstract: A horizontal load carrying pin is rotatable on a horizontal pivot and has a free end supported on a saddle on a latch arm which may be withdrawn to release the load. Upon release of the load a counterweight on the opposite end of the pin returns the pin to horizontal position. The latch arm is spring opened and held in closed position by a pawl which may be released by a remote controlled fluid pressure cylinder and piston or by a manually operated lever in the housing of the hook. The load carrying pin is of generally cylindrical shape to carry flat web type slings as well as steel rings.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: July 23, 1985
    Assignee: Cranston Machinery Company, Inc.
    Inventor: John E. Hargreaves