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ELASTIC VALVE ELEMENT HAVING VARIABLE ORIFICE

  • US 3,685,786 A
  • Filed: 08/31/1970
  • Issued: 08/22/1972
  • Est. Priority Date: 08/31/1970
  • Status: Expired due to Term
First Claim
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1. A variable orifice valve assembly comprising:

  • a resilient, elongated, generally cylindrical body having a fluid-carrying passage therethrough, said passage including a stretch in which a flow controlling constriction is presented, said body including a portion intermediate the ends of the body in circumscribing relationship to said stretch of the passage, said body portion being of greater diameter than longitudinally adjacent parts of the body and having a pair of opposed surfaces spaced longitudinally of the body, said surfaces of said body portion being undercut and inclined toward each other as their inner extremities are approached;

    a sleeve mounted on said body and having an inturned flange provided with a face inclined complementally to one of said surfaces and engageable therewith;

    a follower element having a face inclined complementally to the other of said surfaces and engageable therewith; and

    a collar shiftably, threadably carried by the sleeve and having an inturned flange engageable with the extremity of said follower remote from said face of the latter, said collar engaging said follower to shift the latter for variably compressing said portion of the body in a direction generally parallel to said stretch to deform the body and vary said constriction as the collar is shifted relative to the sleeve.

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