Fluid handling – With casing – support – protector or static constructional... – Jacketed
Patent
1993-12-14
1994-12-06
Chambers, A. Michael
Fluid handling
With casing, support, protector or static constructional...
Jacketed
251291, 251328, F16K 3500
Patent
active
053701496
ABSTRACT:
A line blind valve is disclosed which includes a housing having opposed similar housing halves with resilient sleeve units which compressibly engage each other in the valve open condition and engage opposite sides of the gate or blind in the valve closed condition. The line blind valve provides visibility of all gate edges so as to give a positive indication that the gate or blind has passed completely through the seals. Lockout is also provided when the gate or blind is closed. Each sleeve unit has a plurality of compression holes extending axially and arranged at intervals relative to the circumference of the sleeve. An encircling stiffening ring of harder material is encapsulated in each sleeve so as to be positioned at the inner end of the compression holes. The line blind valve construction of the present invention results in no leakage to the outside when the valve is fully open and no leakage to the outside or past the gate internally when the valve is fully closed.
REFERENCES:
patent: 2577434 (1951-12-01), Rosenbaum
patent: 2732170 (1956-01-01), Shand
patent: 3010694 (1961-11-01), Lynch
patent: 3235224 (1966-02-01), Grove
patent: 3319661 (1967-05-01), Shindler
patent: 3333816 (1967-08-01), Williams et al.
patent: 4062516 (1977-12-01), Grove
patent: 4145057 (1979-03-01), Wheeler
patent: 4325534 (1982-04-01), Roark et al.
patent: 4603864 (1986-08-01), Raftis
patent: 4623122 (1986-11-01), Gambetta
patent: 4658847 (1987-04-01), McCrone
patent: 4685685 (1987-08-01), Iverson
patent: 4688597 (1987-08-01), Clarkson et al.
patent: 4693447 (1987-09-01), Perez
patent: 4846482 (1989-07-01), Blodgett et al.
patent: 4895181 (1990-01-01), McKavanagh
Clarkson Curtis W.
Koll Larry F.
Williams Nicholas J.
Chambers A. Michael
The Clarkson Company
LandOfFree
Line blind valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Line blind valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Line blind valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-208093