Patents by Inventor Robert C. Greenhorn

Robert C. Greenhorn 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).

  • Low energy fuse and method of manufacture
    Patent number: 5509355
    Abstract: A low energy fuse is extruded as a single ply primary tube 1 from a plastic resin blend with particulate energetic material 2 being internally distributed in a manner known per se, said resin blend comprising a major amount of an orientable polymer, for example, linear low density polyethylene to provide structural integrity and a minor amount of a modifier to impart enhanced particle retentive properties to the tube and preferably also containing a polymer or copolymer to impart melt strength and aid in tube extrusion.
    Type: Grant
    Filed: August 19, 1992
    Date of Patent: April 23, 1996
    Assignee: Imperial Chemical Industries PLC
    Inventors: Ronald F. Stewart, David J. Welburn, David M. Welsh, Robert C. Greenhorn
  • Low energy fuse and method and manufacture
    Patent number: 5317974
    Abstract: A low energy fuse is extruded as a single ply primary tube 1 from a plastic resin blend with particulate energetic material 2 being internally distributed in a manner known per se, said resin blend comprising a major amount of an orientable polymer, for example, linear low density polyethylene to provide structural integrity and a minor amount of a modifier to impart enhanced particle retentive properties to the tube and preferably also containing a polymer or copolymer to impart melt strength and aid in tube extrusion.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: June 7, 1994
    Assignee: Imperial Chemical Industries PLC
    Inventors: Ronald F. Stewart, David J. Welburn, David M. Welsh, Robert C. Greenhorn
  • Shock tubing that is IR transparent color-coded
    Patent number: 5208419
    Abstract: A method of producing a coloured shock tubing comprising a visibly coloured hollow tube having an inner coating of a reactive material wherein the core loading of the reactive material in the tube may be measured by radiation absorption. The visible colouration of the hollow tube is effected by the addition of a coloured compound, which compound is essentially transparent to the radiation used to measure core loading. A one stage extrusion process may be utilized to prepare a shock tube wherein core loading is easily measured during production, and verified after production.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: May 4, 1993
    Assignee: ICI Canada Inc.
    Inventors: Robert C. Greenhorn, Jacques Lafond
  • Low energy fuse and method of manufacture
    Patent number: RE37689
    Abstract: A low energy fuse in extruded as a single ply primary tube 1 from a plastic resin blend with particulate energetic material 2 being internally distributed in a manner known per se, said resin blend comprising a major amount of an orientable polymer, for example, linear low density polyethylene to provide structural integrity and a minor amount of a modifier to impart enhanced particle retentive properties to the tube and preferably also containing a polymer or copolymer to impart melt strength and aid in tube extrusion.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: May 7, 2002
    Assignee: Orica Explosives Technology Pty. Ltd.
    Inventors: Ronald F. Stewart, David J. Welburn, David M. Welsh, Robert C. Greenhorn