Patents by Inventor George Pratt

George 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: 7842399
    Abstract: A sliding bearing element is characterized in that a bearing material that is bonded to the backing is disposed at least at the edges of the backing in form of wires in the circumferential direction and that a soft material is located at least in a space between said wires. At least one intermediate wire can be disposed between the two edge wires generally running in the circumferential direction. The method comprises the following processing steps: providing a strip of steel or any other material having the required degree of strength which forms the backing of the bearing to be produced, bonding at least one wire at each of the two edges of the backing strip, whereat disposing the wires in such a manner that said wires run in circumferential direction generally, and filling out the spaces between the wires with soft material.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: November 30, 2010
    Assignee: Federal-Mogul Wiesbaden GmbH & Co. KG
    Inventor: George Pratt
  • Publication number: 20070134508
    Abstract: A sliding bearing element is characterized in that a bearing material that is bonded to the backing is disposed at least at the edges of the backing in form of wires in the circumferential direction and that a soft material is located at least in a space between said wires. At least one intermediate wire can be disposed between the two edge wires generally running in the circumferential direction. The method comprises the following processing steps: providing a strip of steel or any other material having the required degree of strength which forms the backing of the bearing to be produced, bonding at least one wire at each of the two edges of the backing strip, whereat disposing the wires in such a manner that said wires run in circumferential direction generally, and filling out the spaces between the wires with soft material.
    Type: Application
    Filed: February 10, 2005
    Publication date: June 14, 2007
    Inventor: George Pratt
  • Patent number: 6337145
    Abstract: A process for the production of sliding elements in which an overlay of lead-tin-copper is applied by electroplating to the prefabricated semi-finished product, and in which a ternary, fluoroborate-free electroplating bath is used without brighteners and with the addition of non-ionic wetting agents and free alkyl sulfonic acid. After the deposition of the galvanic overlay a heat treatment is carried out in the temperature range of 150° C. to 200° C. for between 1 and 100 hours. The multilayer material for sliding elements comprises at least a backing and an overlay of 12 to 16 wt. % tin and 7 to 11 wt. % copper, the rest being lead. The overlay comprises 15 to 25 wt. % particles of intermetallic compound Cu6Sn5.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: January 8, 2002
    Assignee: Federal-Mogul Wiesbaden GmbH & Co.
    Inventor: George Pratt
  • Patent number: 4012650
    Abstract: In acoustic surface wave devices the bottom of the substrate is provided with a plurality of discrete recesses to attenuate and/or scatter bulk waves.
    Type: Grant
    Filed: August 29, 1974
    Date of Patent: March 15, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Ronald George Pratt, Richard Stevens, Alojzy Karr