Patents by Inventor David Victor Clifford

David Victor Clifford 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).

  • Solid propellant charges
    Patent number: 4004523
    Abstract: A solid propellant charge having combustion inhibited surfaces provided by bonding elastomeric combustion-inhibiting material to the surfaces by a layer of a polyvinyl acetal resin bonded directly to those surfaces, and by a layer of another resin selected from epoxy resins, polyesters and formaldehyde resins.
    Type: Grant
    Filed: October 26, 1966
    Date of Patent: January 25, 1977
    Inventors: David Victor Clifford, Stephen William Bell, Stuart Gordon, Philip Graham Jones
  • Rocket motors
    Patent number: 3999382
    Abstract: 1. A case-bonded solid propellant rocket motor having a motor case, the motor case having an inner surface, a double-base propellant located in the motor case, the double-base propellant having an outer surface, and a layer of a polyvinyl acetal resin bonded to the outer surface of the double-base propellant to bond the propellant to the inner surface of the motor case.
    Type: Grant
    Filed: October 26, 1966
    Date of Patent: December 28, 1976
    Inventors: David Victor Clifford, William George Williams, Stuart Gordon, Kenneth Gordon Reed