Patent US3552422A successfully refreshed from Google Patents.
US3552422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve system
Assignee: Individual
•
Filing: 1968-09-04
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Granted: 1971-01-05
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Expires: 1988-09-04
Abstract
Abstract A valve assembly for use in pipelines including a main valve housing having a valve chamber with opposed inlet and outlet ports. Valve heads in the chamber are advanced toward the respective ports to close the same. Auxiliary valves are disposed in housings between said ports and the downstream and upstream portions of the pipeline to close the pipelines for isolating the main valve housing so as to prevent loss of fluid or of pressure in the lines while the main valve housing is removed for purposes of repair or replacement. All valves are actuated by expandable bellows in response to the pressure of a control fluid.
Inventors
- 👤 Fredrick E Michelson
- 👤 Leslie A Runton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:55
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/20; F16K17/22; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6184; Y10T137/8593; Y10T137/87917; Y10T137/88062
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
132 words
Valve mechanism for use in a pipeline, comprising a housing forming a valve chamber and having oppositely disposed inlet and outlet ports, a tapered valve seat registering with each port and valve heads in said chamber mounted to be advanced independently toward the respective ports for sealing against said valve seats, a transverse plate in said chamber having a closed area in alignment with said heads and having openings therearound for the passage of the line fluid, said heads carrying stems slidable in said plate for guiding said heads as they are shifted between open and closed positions, expandable bellows extending between the closed area of said plate and the respective valve heads, and means supplying a control fluid under pressure to said bellows for advancing the respective heads to closed position.
Claim 2
Dependent Claim
132 words
Valve mechanism for use in a pipeline, comprising a housing forming a valve chamber and having oppositely disposed inlet and outlet ports, a tapered valve seat registering with each port and valve heads in said chamber mounted to be advanced independently toward the respective ports for sealing against said valve seats, a transverse plate in said chamber having a closed area in alignment with said heads and having openings therearound for the passage of the line fluid, said heads carrying stems slidable in said plate for guiding said heads as they are shifted between open and closed positions, expandable bellows extending between the closed area of said plate and the respective valve heads, and means supplying a control fluid under pressure to said bellows for advancing the respective heads to closed position.
Claim 3
Dependent Claim
148 words
Valve mechanism for use in a pipeline, comprising a housing forming a valve chamber and having oppositely disposed inlet and outlet ports, a tapered valve seat registering with each port and valve heads in said chamber mounted to be advanced toward the respective ports for sealing against said valve seats, a transverse plate in said chamber having openings for the passage of the line fluid, expandable bellows extending between said plate and the respective valve heads, and means supplying a control fluid under pressure to said bellows for advancing said heads to closed position, the valve head on the outlet side carrying a stem extending through and sliding in said plate and a third bellows extending between said plate and the free end of said stem, and means to supply a control fluid under pressure to said last bellows for expanding the same to retract said last head.
Claim 4
Dependent Claim
148 words
Valve mechanism for use in a pipeline, comprising a housing forming a valve chamber and having oppositely disposed inlet and outlet ports, a tapered valve seat registering with each port and valve heads in said chamber mounted to be advanced toward the respective ports for sealing against said valve seats, a transverse plate in said chamber having openings for the passage of the line fluid, expandable bellows extending between said plate and the respective valve heads, and means supplying a control fluid under pressure to said bellows for advancing said heads to closed position, the valve head on the outlet side carrying a stem extending through and sliding in said plate and a third bellows extending between said plate and the free end of said stem, and means to supply a control fluid under pressure to said last bellows for expanding the same to retract said last head.
Claim 5
Dependent Claim
42 words
Valve mechanism as set forth in claim 2 in which said third bellows is disposed within the bellows connected to the head on the inlet side whereby the fluid pressure within said last bellows exerts a valve-closing pressure on said third bellows.
Claim 6
Dependent Claim
132 words
A valve assembly comprising a main valve mechanism for use in a pipeline comprising a main valve housing containing a chamber having opposed inlet and outlet ports communicating respectively with the downstream and upstream portions of said pipeline and valve heads in said chamber positioned to close the respective ports, and auxiliary valve housings communicating with said inlet and outlet ports respectively and interposed between said main valve housing and the corresponding portions of the pipeline, normally closed valves in said auxiliary housings, selective means for closing said last valves for isolating the pipeline portions, and means releasably connecting said auxiliary housings to said main housing to permit the main housing to be removed after said last valves have been closed without loss of fluid or of head in said pipeline portions.
Claim 7
Dependent Claim
132 words
A valve assembly comprising a main valve mechanism for use in a pipeline comprising a main valve housing containing a chamber having opposed inlet and outlet ports communicating respectively with the downstream and upstream portions of said pipeline and valve heads in said chamber positioned to close the respective ports, and auxiliary valve housings communicating with said inlet and outlet ports respectively and interposed between said main valve housing and the corresponding portions of the pipeline, normally closed valves in said auxiliary housings, selective means for closing said last valves for isolating the pipeline portions, and means releasably connecting said auxiliary housings to said main housing to permit the main housing to be removed after said last valves have been closed without loss of fluid or of head in said pipeline portions.
Claim 8
Dependent Claim
51 words
Valve mechanism as set forth in claim 4 in which said auxiliary valves are spring biased to closed positions, an expandable bellows are connected to open said valves and means is provided to supply a control fluid to said bellows under a pressure adapted to maintain said valves in open position.
Claim 9
Dependent Claim
51 words
Valve mechanism as set forth in claim 5 in which line pressure is supplied to said bellows and the bellows have an area sufficiently great to maintain said valves closed against the pressure of the line fluid, whereby the valves automatically close in response to a predetermined drop in line pressure.
Claim 10
Dependent Claim
48 words
Valve mechanism as set forth in claim 4 in which said auxiliary valves are of the spool valve type and are slidable to open and close peripheral ports, said auxiliary housings having passages connecting said peripheral ports to the inlet and outlet ports of the main valve housing.
Claim 11
Dependent Claim
107 words
Valve mechanism for use in a pipeline, comprising a housing forming a valve chamber and having oppositely disposed inlet and outlet ports, a tapered valve seat registering with each port and valve heads in said chamber mounted to be advanced toward the respective ports for sealing against said valve seats, a transverse plate in said chamber having openings for the passage of the line fluid, expandable bellows extending between said plate and the respective valve heads, and means supplying a control fluid under pressure to said bellows for advancing said heads to closed position, said plate containing passages for said control fluid communicating with the respective bellows.
Claim 12
Dependent Claim
107 words
Valve mechanism for use in a pipeline, comprising a housing forming a valve chamber and having oppositely disposed inlet and outlet ports, a tapered valve seat registering with each port and valve heads in said chamber mounted to be advanced toward the respective ports for sealing against said valve seats, a transverse plate in said chamber having openings for the passage of the line fluid, expandable bellows extending between said plate and the respective valve heads, and means supplying a control fluid under pressure to said bellows for advancing said heads to closed position, said plate containing passages for said control fluid communicating with the respective bellows.
Claim 13
Dependent Claim
126 words
Valve mechanism for use in a pipeline, comprising a housing forming a valve chamber and having oppositely disposed inlet and outlet ports, a tapered valve seat registering with each port and valve heads in said chamber mounted to be advanced toward the respective ports for sealing against said valve seats, a transverse plate in said chamber having openings for the passage of the line fluid, expandable bellows extending between said plate and the respective valve heads, and means supplying a control fluid under pressure to said bellows for advancing said heads to closed position, the head on the inlet side being greater in area than the head on the outlet side and being openable in response to line pressure when the control fluid pressure is reduced.
Claim 14
Dependent Claim
126 words
Valve mechanism for use in a pipeline, comprising a housing forming a valve chamber and having oppositely disposed inlet and outlet ports, a tapered valve seat registering with each port and valve heads in said chamber mounted to be advanced toward the respective ports for sealing against said valve seats, a transverse plate in said chamber having openings for the passage of the line fluid, expandable bellows extending between said plate and the respective valve heads, and means supplying a control fluid under pressure to said bellows for advancing said heads to closed position, the head on the inlet side being greater in area than the head on the outlet side and being openable in response to line pressure when the control fluid pressure is reduced.
References Cited (Backward Citations)
US3081786A
Cited
US3068879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |