Patents by Inventor Zvi Weingarten

Zvi Weingarten 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).

  • Sleeve valve with integral control chamber
    Patent number: 4496132
    Abstract: A sleeve valve comprising an elastomer sleeve folded onto itself, the two peripheral ends being fixedly held so that an integral control chamber is created, an opening being provided in said chamber for connecting it to a control pressure source, no housing being required.
    Type: Grant
    Filed: December 2, 1982
    Date of Patent: January 29, 1985
    Inventor: Zvi Weingarten
  • Sleeve valves
    Patent number: 4465258
    Abstract: The wall of an elastomer sleeve valve is provided with a lip-shaped internal sealing member at a median region of the wall; when the valve is closed, the sealing member forms two lips contacting each other along a substantially diametral plane to produce sealing, and contacted lips have arcuate ends joining them so that they produce the seal without causing undue stresses in the sleeve wall. In a preferred embodiment the lips contact each other when no hydraulic pressures are imposed on the sleeve in the rest state.
    Type: Grant
    Filed: June 1, 1982
    Date of Patent: August 14, 1984
    Inventor: Zvi Weingarten
  • Diaphragm valves
    Patent number: 4221361
    Abstract: A spring biased diaphragm valve having circular beads on the diaphragm one of which seats against and within the seat and the other surrounding the spring.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: September 9, 1980
    Assignee: Barmad
    Inventor: Zvi Weingarten