Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed
Patent
1991-10-04
1993-09-14
Walton, George L.
Valves and valve actuation
Mechanical movement actuator
Particularly packed or sealed
73 46, 137312, 137315, 222108, 277 2, 277 72FM, F16K 4300, G01M 328
Patent
active
052441830
ABSTRACT:
A sealing assembly, usable with a valve or the like, having a movable shaft within a main housing and controlling a product under a first pressure. A cartridge housing forms a continuation of the main housing. An extension of the shaft extends through the cartridge housing and forms an annulus therewith. Spaced first and second annular seals movably seal the annulus between the shaft extension and the cartridge housing, forming a central sealing chamber. An injector introduces sealing medium into the central sealing chamber under a pressure higher than the product pressure. An accumulator receives excess sealing medium from the central sealing chamber, and can also be associated with monitoring means. Additional annular seals may form additional chambers spaced along the shaft, and these chambers may likewise be used for injection of sealing media and/or monitoring and/or leak detection.
REFERENCES:
patent: Re29679 (1978-06-01), Boitnott
patent: 2155628 (1939-04-01), Williams
patent: 3544064 (1970-12-01), Carlin
patent: 3627260 (1971-12-01), Grove
patent: 3815925 (1974-06-01), Mattoon
patent: 3958592 (1976-05-01), Wells et al.
patent: 3972396 (1976-08-01), Bochnak
patent: 3979104 (1976-09-01), La Coste et al.
patent: 4174728 (1979-11-01), Usnick et al.
patent: 4177998 (1979-12-01), Laitkep et al.
patent: 4230299 (1980-10-01), Pierce, Jr.
patent: 4289157 (1981-09-01), McGee
patent: 4340204 (1982-07-01), Herd
patent: 4364542 (1982-12-01), Meyer
patent: 4383546 (1983-05-01), Walters, Jr.
patent: 4537385 (1985-08-01), Bragg et al.
patent: 4575101 (1986-03-01), Hopkins
patent: 4616673 (1986-10-01), Bondar
patent: 4633897 (1987-01-01), Effenberger
patent: 4719939 (1988-01-01), Killian
patent: 4744386 (1988-05-01), Frazer
patent: 4794945 (1989-01-01), Reback
patent: 4813648 (1989-03-01), Walton et al.
patent: 4972867 (1990-11-01), Ruesch
Calvin Douglas G.
Holtgraver Edward G.
Keystone International Holdings Corp.
Walton George L.
LandOfFree
Fugitive emission sealing assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fugitive emission sealing assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fugitive emission sealing assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2021771