Fluid handling – With leakage or drip collecting
Patent
1996-02-23
1997-01-07
Walton, George L.
Fluid handling
With leakage or drip collecting
73 46, 137315, 251214, 25131501, 25131514, 251900, 277 9, F16K 4104, F16K 4300, F16J 1520, F16J 1548
Patent
active
055906800
ABSTRACT:
An external valve operating means that forms a seal around the rotating valve stem of a valve operating under internal pressure is disclosed. This seal prevents the escape of fluids should the valve's primary seals fail. The external valve operating means allows for rotation of the valve stem without removal or compromise of the seal. A stationary operating seal cap is in threaded and sealed engagement with the valve body. Upon partial disengagement of the stationary operating seal cap, the pressure within the external valve operating means is vented. An external valve stem drive protrudes through the top of the stationary operating seal cap. An O-ring forms a seal between the two. The bottom of the external stem drive mates with the rotating valve stem while the top of the external stem drive is shaped so as to allow gripping by a tool. Rotation of the external stem drive via the tool effects rotation of the valve stem while the seal surrounding it is maintained.
REFERENCES:
patent: 1707840 (1929-04-01), Benton
patent: 1961035 (1934-05-01), Dowden
patent: 1969224 (1934-08-01), Lear
patent: 1969225 (1934-08-01), Lear
patent: 1989994 (1935-02-01), Lear
patent: 2178828 (1939-11-01), Broecker
patent: 2311748 (1943-02-01), Gora
patent: 3456679 (1969-07-01), Graham
patent: 4072161 (1978-02-01), Schoeneweis et al.
patent: 4337788 (1982-07-01), Seger
patent: 4384705 (1983-05-01), Kato
patent: 4469122 (1984-09-01), Meek
patent: 4926898 (1990-05-01), Sampey
patent: 5129624 (1992-07-01), Icenhower et al.
patent: 5178363 (1993-01-01), Icenhower et al.
patent: 5241980 (1993-09-01), Corte
patent: 5476117 (1995-12-01), Pakula
Gugala Zbigniew H.
Scapes John N.
Henry Valve Company
Walton George L.
LandOfFree
External valve operating means does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with External valve operating means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and External valve operating means will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1757456