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Gate valve

  • US 6,691,981 B1
  • Filed: 02/27/2001
  • Issued: 02/17/2004
  • Est. Priority Date: 06/19/1998
  • Status: Expired due to Fees
First Claim
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1. A valve comprising a valve body having a flow passage there through, a gate element having an orifice, and actuation means operable to move the gate element, wherein the gate element is supported for rotation by a first recess within the valve body and the valve body defines a pressure-containing housing around the gate element, wherein further the actuation means comprise a drive element rotatably supported by a second recess of the valve body, and a compensator wheel supported for rotation around an axis of rotation within a recess associated with the gate element, the drive element and compensator wheel being linked such that rotational movement of the drive element is transferred into rotational movement of the gate element by the rotation of the compensator wheel within the recess associated with the gate element.

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