Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1984-06-08
1988-04-26
Thurlow, Jeffery
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
291571R, 29455R, 29460, 29469, 295272, 295274, 264263, 264277, 264279, 2643282, 425DIG47, B29C 4514, F16K 122
Patent
active
047403470
ABSTRACT:
The invention provides a means whereby a body such as that of a butterfly valve can be prepared with minimal machining. The manufacture of a butterfly valve is described in which the stem openings for the valve are left in their as-cast condition, the stem bushings inserted, aligned with a stem replica and then permanently locked in aligned position by filling the voids between the bushings and the walls of their openings with the same elastomeric compound from which the valve seat is molded. The compound, after curing or setting, being of such thin wall section that for all practical purposes it is a rigid material.
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Brown James M.
O'Keefe Van W.
Quick Danny F.
Sloan, Jr. Paul H.
Nibco Inc.
Tentoni Leo B.
Thurlow Jeffery
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