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Low vibration high vacuum gate valve

  • US 5,116,023 A
  • Filed: 05/14/1991
  • Issued: 05/26/1992
  • Est. Priority Date: 05/14/1991
  • Status: Expired due to Fees
First Claim
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1. A gate valve for a structure defining a longitudinal passageway and a generally transverse gate raceway relative to the longitudinal passageway, the raceway defining a pair of transverse gate races and a seating surface surrounding an opening in the longitudinal passageway, the seating surface generally facing the gate races and defining a predetermined acute angle with respect to the raceway, the gate races defining stops, the gate valve further comprising:

  • seal means moveably disposed within the gate raceway, the seal means linearly displaced along the raceway and including a pair of guide wheel means for following the gate races and for providing first fulcrum means for rotating the seal means toward the seating surface when the stops are reached,the seal means defining a gate sealing surface for contacting and sealing off the seating surface of the raceway when the seal means is rotated,hinge means for hinging the seal means to a carriage means,valve actuator means for applying a rectilinear force to the carriage means to displace the carriage means along the raceway until the stops are reached and to cause the seal means to rotate at the first fulcrum means and seal against the seating surface in response to further rectilinear force after the stops have been reached.

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