Pipe joints or couplings – With fluid pressure seal – With external pressure supply
Patent
1993-06-17
1995-01-17
Reese, Randolph A.
Pipe joints or couplings
With fluid pressure seal
With external pressure supply
285272, 285281, F16L 1710
Patent
active
053820584
ABSTRACT:
A rotatable flange union for use with vacuum systems includes a first flange, a second flange and a connector which connects the first flange to the second flange and allows the first flange to rotate 360 degrees with respect to the second flange. In the preferred embodiment, tubing of the first flange is placed within tubing of the second flange. Additionally, the connector includes a first quad ring seal, a second quad ring seal, and a cavity in the second flange. The first quad ring seal is in contact with an inner diameter of the second flange and is in contact with an outer diameter of the first flange. The second quad ring seal is in contact with the inner diameter of the second flange and is in contact with the outer diameter of the first flange. The cavity is between the first quad ring seal and the second quad ring seal. The cavity is pumped to a pressure of less than ten millitorr.
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Flexible stainless steel hose available from Nor-Cal Products, Inc., having a business address of 1512 South Oregon Street, P.O. Box 518, Yreka, Calif. 96097.
Chun Shackelford Heather
Reese Randolph A.
VLSI Technology Inc.
Weller Douglas L.
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