Patents by Inventor Malcolm J. Rigby

Malcolm J. Rigby 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).

  • Thermally toughening glass
    Patent number: 4511384
    Abstract: Hot glass is thermally toughened by generating a stream of closely-packed, aerated particles, and projecting that stream towards the glass. A plurality of such streams are projected from an array of nozzles, and the velocity of projection of each stream is sufficient to ensure that the integrity of the stream is preserved in its trajectory towards the glass.
    Type: Grant
    Filed: January 26, 1983
    Date of Patent: April 16, 1985
    Assignee: Pilkington Brothers P.L.C.
    Inventors: John Evason, Malcolm J. Rigby, Peter Ward
  • Thermally toughening glass
    Patent number: 4494972
    Abstract: The invention provides apparatus and a method for thermally toughening glass by quenching the glass with a particulate material. A body of mobile aerated particulate material is created and gas extraction means and gas supply means are located in a region of the body through which a flow of the particulate material towards the glass is to be engendered. Regulation of the gas supply and extraction means regulates the mobility of the particulate material and permits the flow to be switched on and off.
    Type: Grant
    Filed: January 26, 1983
    Date of Patent: January 22, 1985
    Assignee: Pilkington Brothers P.L.C.
    Inventors: Brian Marsh, Malcolm J. Rigby, Peter Ward