The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 1990
Filed:
Mar. 27, 1990
Paul B Soderberg, Houston, TX (US);
Soderberg Research & Development, Inc., Houston, TX (US);
Abstract
The present invention is directed to an improved valve comprising a valve housing, a fluid path therethrough, a seat disposed about the fluid path, a rotatable, curved wedge disposed in the fluid path, an actuator for rotating the wedge between its closed and opened positions and a fixed member for displacing the wedge longitudinally toward the seat as it is rotated between its opened and closed positions. Preferably, the seat is biased toward the hemi-wedge. The rotatable, curved wedge has a curved sealing surface for cooperation with the seat. The wedge includes a bore through its thinner end forming a part of the fluid flow path when opened while its thicker end blocks the fluid flow path in the closed position. The sides of the wedge are curved, one side providing a convex sealing surface and the other side providing a concave thrust surface. Rotation of the hemi-wedge from the opened to the closed position displaces the sealing surface thereof toward the seat while maintaining the same relative orientation between the sealing surface and the seat.