Patent US4709831A successfully refreshed from Google Patents.
US4709831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Threaded end enclosure
Assignee: Albany International Corp
•
Filing: 1986-02-18
•
Granted: 1987-12-01
•
Expires: 2006-02-18
Abstract
Abstract A separatory module for use in separation of fluids by various methods i.e. ultra filtration, hyper filtration, reverse osmosis, or dialysis, includes a pressure shell encasing the hollow separatory fibers. The pressure shell contains threaded connections to end plugs at either end. The threaded connections provide sufficient pressure resistance to serve as a pressure container for high pressure separatory techniques. In addition, a seal is provided on the threaded end plugs so that when the end plug is threaded into the cylinder the end plugs act as a pressure stop and a fluid tight seal.
Inventors
- 👤 Myron J. Coplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:57
CPC Classifications
B; B29; B29D; B29D1/00; B29D1/005; B01; B01D; B01D63/00; B01D63/02; B01D65/00; F; F16; F16J; F16J13/00; F16J13/02; F16J13/12; B01D2313/00; B01D2313/04; B01D2313/041; B01D2313/20; B01D2313/201; B01D2313/2011
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
111 words
A pressure shell for housing a membrane separatory system, the pressure shell comprising a hollow body which is generally cylindrical in shape and has threads on at least one end thereof: a first threaded end plug adapted to engage the threaded interior of the hollow body, and at least one aperture in the first end plug for allowing fluid communication between the interior of the pressure shell and the outside environment and comprising a second threaded end plug and wherein the hollow body is threaded at both ends and wherein said hollow body has an external diameter in the area of the threads which is greater than its external diameter elsewhere.
Claim 2
Dependent Claim
111 words
A pressure shell for housing a membrane separatory system, the pressure shell comprising a hollow body which is generally cylindrical in shape and has threads on at least one end thereof: a first threaded end plug adapted to engage the threaded interior of the hollow body, and at least one aperture in the first end plug for allowing fluid communication between the interior of the pressure shell and the outside environment and comprising a second threaded end plug and wherein the hollow body is threaded at both ends and wherein said hollow body has an external diameter in the area of the threads which is greater than its external diameter elsewhere.
Claim 3
Dependent Claim
16 words
A pressure shell according to claim 1 further comprising a sealing means on the end plug.
Claim 4
Dependent Claim
21 words
A pressure shell according to claim 2 wherein the sealing means is disposed on a forward edge of the end plug.
Claim 5
Dependent Claim
31 words
A pressure shell according to claim 3 wherein the at least one aperture in the end plug comprises three apertures having a hollow cylindrical portions extending outwardly from the end plug.
Claim 6
Dependent Claim
64 words
A pressure shell according to claim 2 wherein said end plug is unthreaded and has an indentation on its outside surface for engaging said sealing means, and further comprising a thick wall threaded ring adapted to threadingly engage the threaded portion of said hollow body, said thick wall threaded ring functioning to retain said cylindrical unthreaded plug in said hollow body under fluid pressure.
References Cited (Backward Citations)
US2624488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |