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Valve with spherical plug

  • US 3,171,429 A
  • Filed: 03/09/1962
  • Issued: 03/02/1965
  • Est. Priority Date: 03/15/1961
  • Status: Expired due to Term
First Claim
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1. IN COMBINATION IN A VALVE, A HOUSING HAVING A PASSAGE THERETHROUGH FOR CONVEYING A FLUID, SAID HOUSING BEING PROVIDED WITH A BORE HAVING ITS AXIS AT AN ANGLE WITH REGARD TO THE AXIS OF SAID PASSAGE, A ROTATABLE PLUG EXTENDING THROUGH SAID BORE AND HAVING ITS ENDS PROVIDED WITH BEARING STUDS ROTATABLY JOURNALLED IN SAID HOUSING, SEALING RING MEANS DISPLACEABLE IN AXIAL DIRECTION OF SAID PASSAGE FOR SEALING ENGAGEMENT WITH SAID PLUG TO THEREBY SEAL SAID PASSAGE RELATIVE TO SAID BORE, BUSHING MEANS AXIALLY DISPLACEABLY MOUNTED WITHIN SAID HOUSING, SAID BUSHING MEANS BEING REMOVABLE SELECTIVELY INTO AN EFFECTIVE POSITION TO PRESS SAID SEALING RING MEANS AGAINST SAID PLUG AND ALSO BEING REMOVABLE INTO A RETRACTED POSITION TO RELIEVE THE PRESSURE AGAINST SAID SEALING RING MEANS AND TO PERMIT REMOVAL OF SAID PLUG FROM SAID HOUSING WHILE SAID SEALING RING MEANS REMAIN IN THE HOUSING, FIRST MEANS ARRANGED IN SAID HOUSING FOR COOPERATION WITH SAID BUSHING MEANS TO MOVE THE LATTER INTO SAID EFFECTIVE POSITION, MEANS FOR MAKING SAID FIRST MEANS INEFFECTIVE, AND SECOND MEANS ARRANGED ON SAID PLUG AND

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