Patents by Inventor Jonathan B. Wexler

Jonathan B. Wexler 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).

  • Composite fire stop device
    Patent number: 4796401
    Abstract: A fire stop collar assembly comprises a plastics sleeve (2) which fits over a plastics pipe. An annular collar (4) of intumescent material is supported by the external surface of the sleeve (2). A tension spring (8) is held under tension on an end of the sleeve (2), with a sheath of refractory fabric (6) being interposed between the spring (8) and the sleeve (2). Upon softening of the pipe and sleeve (2) in the event of a fire, the spring (8) will act to constrict the sleeve and the pipe within the refractory sheath.
    Type: Grant
    Filed: April 3, 1987
    Date of Patent: January 10, 1989
    Assignee: Fire Research Pty., Limited
    Inventor: Jonathan B. Wexler
  • Devices for the fire stopping of plastics pipes
    Patent number: 4559745
    Abstract: A device for shutting-off a plastics pipe in the event of a fire comprises a sheath of a flexible refractory fabric around a portion of the pipe within or adjacent a fire-resisting partition such as a wall or floor. A spring is placed under tension around the fabric and acts to radially constrict the pipe and sheath, when the pipe softens in the event of a fire. Upon subsequent burning, the burnt plastics forms a foam-like carbon mass which plugs the constricted sheath.
    Type: Grant
    Filed: July 30, 1984
    Date of Patent: December 24, 1985
    Assignee: Fire Research Pty. Limited
    Inventor: Jonathan B. Wexler