Patents by Inventor Murray Charles Jefferies

Murray Charles Jefferies 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).

  • Composite gasket
    Patent number: 6105973
    Abstract: A composite joint sealing gasket (8) includes an elongated flexible, resilient member (10) typically of an elastomer or polymer, for example, elastomer rubber, thermoplastic elastomer or thermoplastic polymer with memory, for example, EPDM or neoprene, and has opposed elongated upper and lower longitudinal edge portions (18, 16); the upper portion (18) defines a sealing element (40, 42); a tacky sealing composition (12), for example, a mastic composition is supported on an outer surface of the lower portion (16) remote from the sealing element (40, 42).
    Type: Grant
    Filed: December 15, 1993
    Date of Patent: August 22, 2000
    Assignee: Tremco Ltd.
    Inventors: Donald James Butler, Murray Charles Jefferies, Henrique Manuel Costa Dos Reis