Patents by Inventor Raymond P. Cross

Raymond P. Cross 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).

  • Method of thermal toughening of glass in a fluidized bed
    Patent number: 4400193
    Abstract: Glass is heated to a temperature above its strain point and is thermally toughened by chilling with a quiescent gas-filuidized particulate material which has gas-generating properties and a mean particle size in the range 30 .mu.m to 120 .mu.m, a particle size distribution in the range 1.15 to 2.78, a flowability in the range 69.5 to 92, and a thermal capacity per unit volume at minimum fluidization in the range 0.7 to 1.59 MJ/m.sup.3 K.The invention is particularly suitable for thermally toughening glass sheets for vehicle windscreens.
    Type: Grant
    Filed: October 19, 1979
    Date of Patent: August 23, 1983
    Assignee: Pilkington Brothers Limited
    Inventors: Raymond P. Cross, Gordon T. Simpkin
  • Thermal treatment of glass
    Patent number: 4372774
    Abstract: The thermal treatment of glass is effected by contacting the glass, when it is hot, with a gas-fluidized mixture of particulate materials, at least one of which is selected to have gas-generating properties when heated by the hot glass. The materials are mixed in selected pre-determined proportions which impart to the mixture a thermal capacity and flowability which are such that a required thermal treatment is achieved.The method is particularly suitable for the thermal toughening of glass sheets for vehicle windscreens.
    Type: Grant
    Filed: July 21, 1981
    Date of Patent: February 8, 1983
    Assignee: Pilkington Brothers Limited
    Inventors: Raymond P. Cross, Gordon T. Simpkin