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Vacuum valve

  • US 3,897,933 A
  • Filed: 12/20/1973
  • Issued: 08/05/1975
  • Est. Priority Date: 12/20/1973
  • Status: Expired due to Term
First Claim
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1. A thumb actuated vacuum valve comprising an elongate body having a generally rectangular cross section and four side faces, a longitudinal bore extending completely through said body, a transverse bore extending through said body opening through one of said side faces and extending to and opening through an opposite parallel side face intersecting said longitudinal bore, a pair of parallel outwardly opening grooves formed in opposed side faces adjacent one of said side faces throughwhich said transverse bore opens, a rotary valve plug mounted in said transverse bore for rotation therein with said plug having the bore extending therethrough adapted to be aligned with the longitudinal bore in said body upon rotation of said plug, gear teeth around a portion of the diameter of said plug adjacent one end of said plug, a hand actuated slide on said body, a pair of bars on said slide engaging in said groove for mounting said slide for sliding movement along said body, and gear teeth on one of said bars meshing with the gear teeth on said plug for rotating said plug upon sliding movement of said slide.

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