Patents by Inventor David A. Pratt

David A. Pratt 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: 5042963
    Abstract: An air turbine starter for use aboard aircraft includes a dual range power train and a clutch automatically shifting between the ranges according to the use being experienced by the starter. Main engine starts may be achieved more quickly, while ground check out of aircraft systems using the starter to power main engine accessory devices via the engine gear box may be performed with better power input to the accessories and improved efficiency.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: August 27, 1991
    Assignee: Allied-Signal Inc.
    Inventors: Kal K. Sorenson, David A. Pratt
  • Patent number: 4915217
    Abstract: A container package comprising an array of cans, each of which has a body portion, an annular bead on the upper end thereof having a smaller diameter than the body portion and an inclined portion extending from the body portion to the bead, and a carrier. The carrier comprises a sheet of flexible plastic material having a plurality of openings forming an array for receiving the ends of the cans. The cans are inserted upwardly into the openings and retained by the carrier by flexing of the periphery of each opening upwardly against the bead of each can. The modulus of elasticity, the thickness of the sheet and the spacing and size of the openings are such that the cans are maintained in abutting relationship. The upper ends of the cans are substantially in a single plane when the package is lifted through finger openings in the sheet.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: April 10, 1990
    Assignee: Owens-Illinois Plastic Products Inc.
    Inventors: James A. Karabedian, David A. Pratt
  • Patent number: 4911290
    Abstract: A container package comprising an array of cans, each of which has an annular bead on the upper end thereof and a carrier. The carrier includes a sheet of flexible plastic material having a plurality of openings forming an array for receiving the ends of the cans a film of plastic material coextensive with the sheet and bonded to the periphery of the sheet so that it is flat and taut on the sheet. The cans are inserted upwardly into the openings and retained by the carrier by flexing of the periphery of each opening upwardly against the chime or bead of each can. As the cans are inserted, the film is stretched so that it is taut about the upper ends of the cans. The film is stretched substantially flat and taut from one peripheral edge to an opposite peripheral edge. The carrier thus protects the cans from contaminants. The carrier supports the array of the cans so that the upper ends of the cans are in a single plane when the package is lifted through finger openings in the film and sheet.
    Type: Grant
    Filed: March 7, 1989
    Date of Patent: March 27, 1990
    Assignee: Owens-Illinois Plastic Products Inc.
    Inventors: James A. Karabedian, David A. Pratt