Pumps – Successive stages
Patent
1998-04-09
1999-11-30
Leung, Philip H.
Pumps
Successive stages
H05B 100
Patent
active
059931701
ABSTRACT:
An improved method and apparatus are disclosed for isolating product gas from compressor operating fluid. A portion of a piston rod directly exposed to the compressor's operating fluid (the oily portion of the piston rod) is atmospherically isolated from the remaining portion of the piston rod by providing the piston rod with a collar that separates the oily portion of the piston rod from the remainder of the piston rod. A first and a second flexible membrane are coupled to the collar to form a first isolation region, and a second isolation region; the first isolation region encases the oily portion of the piston rod and atmospherically isolates it from the second isolation region, and the second isolation region provides additional isolation from both the operating fluid and the ambient environment. A higher pressure is maintained along the backside of the piston that compresses the product gas than the pressure within the adjacent isolation region. Pairs of wipers with vents coupled therebetween additionally may be employed to further improve product gas isolation.
REFERENCES:
patent: 3584978 (1971-06-01), Shimoi
patent: 3844689 (1974-10-01), Weatherston
patent: 3969039 (1976-07-01), Shoulders
patent: 4010768 (1977-03-01), Hechler, IV
patent: 4080107 (1978-03-01), Ferrentino
patent: 4257230 (1981-03-01), Lundholm
patent: 4361418 (1982-11-01), Tscheppe
patent: 4512151 (1985-04-01), Yamatani
patent: 4556369 (1985-12-01), Braun
patent: 4583921 (1986-04-01), Wolff et al.
patent: 4718836 (1988-01-01), Pottier et al.
patent: 4795315 (1989-01-01), Schultze
patent: 4889350 (1989-12-01), Tranter
patent: 4900233 (1990-02-01), Ripley
patent: 4901413 (1990-02-01), Cotherman et al.
patent: 4951743 (1990-08-01), Henderson
patent: 5046929 (1991-09-01), Novotny et al.
patent: 5049168 (1991-09-01), Danielson
patent: 5076765 (1991-12-01), Yagi et al.
patent: 5154737 (1992-10-01), Jenkins et al.
patent: 5238362 (1993-08-01), Casaro et al.
patent: 5244363 (1993-09-01), Olson
patent: 5265423 (1993-11-01), Glaser
patent: 5383334 (1995-01-01), Kaminishizono et al.
patent: 5613843 (1997-03-01), Tsuru et al.
patent: 5863186 (1999-01-01), Green et al.
Alvarez David
Cowan Norman
Stevens Joe
Thompson Allen
Applied Materials Inc.
Leung Philip H.
Robinson Daniel L.
LandOfFree
Apparatus and method for compressing high purity gas does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for compressing high purity gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for compressing high purity gas will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1664452