Patents by Inventor Christopher W. G. Hall

Christopher W. G. Hall 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).

  • Lightweight glazings
    Patent number: 5561951
    Abstract: A lightweight impact resistant window comprising a glass ply, an energy absorbing plastics interlayer and a ply of thermoset polyurethane having a Shore hardness of at least 75D, wherein the combined thickness of energy absorbing interlayer and thermoset polyurethane ply is at least 1.0 mm.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: October 8, 1996
    Assignee: Pilkington Aerospace Limited
    Inventor: Christopher W. G. Hall
  • Glass treatment
    Patent number: 5468346
    Abstract: A glass ply having a chemically strengthened surface, for example a chemically etched surface, for use in a laminated glazing is treated by hot melting a thermoplastic material onto such strengthened glass surface prior to incorporation of the glass ply into the required laminate. The thermoplastic material may be polyvinylbutyral but is preferably polyurethane.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: November 21, 1995
    Assignee: Pilkington Aerospace Limited
    Inventors: Robert S. Bruce, Christopher W. G. Hall
  • Conveyance window with suppressed reflections
    Patent number: 5376443
    Abstract: A vehicle window includes a glass ply with a layer of thermoset polyurethane over the outer face of the glass which inhibits Restrahlen Band reflection at 8-12 microns from the glass. The polyurethane layer may include an inner layer portion of relatively hard polyurethane and an outer layer of relatively soft polyurethane.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: December 27, 1994
    Assignee: Pilkington Aerospace Limited
    Inventors: Andrew Sijan, Christopher W. G. Hall
  • Curved, laminated impact-resistant panel
    Patent number: 5019443
    Abstract: An impact-resistant laminate has adhered to a rear glass face, opposite to the face which receives the impact, a polycarbonate sheet up to about 3 mm thick which is sufficiently thin to conform to the rear glass face and to be adhered thereto without preforming. Preferably the thickness of the polycarbonate sheet is in the range about 0.25 mm to about 0.64 mm, and it has an abrasion-resistant self-healing coating. The laminate may include toughened or annealed glass sheets.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: May 28, 1991
    Assignee: Pilkington plc
    Inventor: Christopher W. G. Hall
  • Impact-resistant laminate
    Patent number: 4908083
    Abstract: An impact-resistant laminate has adhered to a rear glass face, opposite to the face which receives the impact, a polycarbonate sheet up to about 3 mm thick which is sufficiently thin to conform to the rear glass face and to be adhered thereto without preforming. Preferably the thickness of the polycarbonate sheet is in the range about 0.25 mm to about 0.64 mm, and it has an abrasion-resistant self-healing coating. The laminate may include toughened or annealed glass sheets.
    Type: Grant
    Filed: October 29, 1987
    Date of Patent: March 13, 1990
    Assignee: Pilkington PLC
    Inventor: Christopher W. G. Hall
  • Window Panel
    Patent number: 4817347
    Abstract: A lightweight impact-resistant window panel, for example for adhesive glazing to the airframe of an unpressurized aircraft, has outer and inner glass plies which are laminated with an intermediate impact-resistant plastics ply. An inner ply of impact-resistant plastics is bonded to the rearward face of the inner glass ply. The aggregate thickness of the impact-resistant plies is in the range from about 1 mm to about 7.5 mm.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: April 4, 1989
    Assignee: Pilkington Brothers P.L.C.
    Inventors: Derek L. A. Hand, Christopher W. G. Hall
  • Impact-resistant laminate
    Patent number: 4812359
    Abstract: An impact-resistant laminate has a front glass sheet which receives an impact such as a bullet, and a rear polycarbonate sheet. A thin polycarbonate sheet up to about 1 mm thick is adhered to the rear polycarbonate sheet, and carries a self-healing polyurethane coating.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: March 14, 1989
    Assignee: Pilkington Brothers P.L.C.
    Inventor: Christopher W. G. Hall
  • Window Panel
    Patent number: 4645146
    Abstract: A window panel for an unpressurized aircraft has an outer glass sheet and an inner sheet of plastics material. A peripheral adhesive band is adhered to the exposed face of the inner sheet and has an adhesive face of a thermoplastic material for adhesion to a window frame. An electrical heater is embedded in the peripheral band close to its adhesive face.
    Type: Grant
    Filed: April 11, 1985
    Date of Patent: February 24, 1987
    Assignee: Pilkington Brothers P.L.C.
    Inventor: Christopher W. G. Hall