Patents by Inventor Peter J. Litchield

Peter J. Litchield 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: 4332842
    Abstract: Solid woven conveyor belting is produced by a process which includes the steps of subjecting the fabric carcass to a plurality of alternating changes of direction while immersed in a bath of impregnant material, and then heating the carcass to gel the impregnant. Each of the alternating changes of direction are effected by causing the carcass to follow a generally curved path whose radius of curvature is appreciably less than 75 mm. Prior to immersion, a synthetic polymeric yarn-containing carcass is subjected to a shrinking treatment effective to close the interstices of said carcass to some extent to reduce the impregnant material expelled upon subsequent heating to gel the impregnant.
    Type: Grant
    Filed: November 20, 1979
    Date of Patent: June 1, 1982
    Assignee: TBA Industrial Products Limited
    Inventors: Peter J. Litchield, John K. Taylor