Patents Represented by Attorney Doanld J. Hayes

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  • Signal transmission tube for initiation of explosives
    Patent number: 5001981
    Abstract: A plurality of discrete transmission tubes are held in axially extending juxtaposed relation by an outer sheath which coextensively covers the tubes. An axially extending line of weakness is formed along the length of the sheath. The transmission tubes may be simultaneously initiated for redundent transmission of an initiation signal.
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: March 26, 1991
    Assignee: The Ensign-Bickford Company
    Inventor: Lester W. Shaw