US3618893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antivibration valve seat assembly
Assignee: SOC TECHNIQUE ET COMMERICAL D' INSTALLATIONL INDUSTRIELLES LUCEAT
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Filing: 1969-11-26
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Granted: 1971-11-09
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Expires: 1989-11-26
Abstract
Abstract An antivibration seat assembly especially for a relief-type valve, comprising an annular body adapted for removable installation in the valve''s flow passage, a resilient seat to establish a seal between the body and the valve''s plate or closure member, and an auxiliary floating seat within a chamber surrounding the flow passage through the body. The floating seat moves axially to an extended position in response to a pressure differential between its end surfaces when the valve''s closure member approaches the closed position, and during the final closing movement of the closure member, the floating seat remains in contact with it, eliminating undesirable vibrations.
Inventors
- 👤 Louis Bois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:46
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/42; F16K1/427; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7866; Y10T137/7867; Y10T137/8593; Y10T137/86928; Y10T137/87016; Y10T137/8704
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
An antivibration seat assembly for a valve comprising an annular body that surrounds a central flow passage, said body having a stationary annular resilient seat on its downstream side for engagement with a closure member, an annular chamber in said body disposed radially inwardly of said stationary seat and radially outwardly of said flow passage, said chamber being adapted to slidably receive an annular floating seat therein, an annular floating seat slidably disposed in said chamber, said floating seat having upstream and downstream ends and being adapted to slide axially in said chamber in a downstream direction in response to a greater fluid pressure at the upstream end than at the downstream end, means for retaining said floating seat in said chamber, and means for communicating fluid pressure from the flow passage into said chamber and against the upstream end of said floating seat.
Claim 2
Dependent Claim
144 words
An antivibration seat assembly for a valve comprising an annular body that surrounds a central flow passage, said body having a stationary annular resilient seat on its downstream side for engagement with a closure member, an annular chamber in said body disposed radially inwardly of said stationary seat and radially outwardly of said flow passage, said chamber being adapted to slidably receive an annular floating seat therein, an annular floating seat slidably disposed in said chamber, said floating seat having upstream and downstream ends and being adapted to slide axially in said chamber in a downstream direction in response to a greater fluid pressure at the upstream end than at the downstream end, means for retaining said floating seat in said chamber, and means for communicating fluid pressure from the flow passage into said chamber and against the upstream end of said floating seat.
Claim 3
Dependent Claim
35 words
The seat assembly of claim 1 wherein said annular floating seat includes at least one aperture permitting flow therethrough from said flow passage when said floating seat is in engagement with a valve closure member.
Claim 4
Dependent Claim
26 words
The seat assembly of claim 1 wherein said body has an annular seat mounting groove, said groove having convergently sloping sidewalls for retaining said stationary seat.
Claim 5
Dependent Claim
32 words
The seat assembly of claim 1 wherein said floating seat is comprised of a material having a low specific gravity and a low coefficient of friction with the surfaces of said chamber.
Claim 6
Dependent Claim
31 words
The seat assembly of claim 1 wherein said pressure communicating means includes means for providing improved pressure distribution around the periphery between the chamber and the base of the floating seat.
Claim 7
Dependent Claim
119 words
An antivibration seat assembly for a valve comprising an annular body having a central bore defining a flow passage, a stationary seat on the downstream side of the body that surrounds said bore, a counterbore of somewhat larger diameter than said central bore and concentric therewith, said counterbore being located downstream of said central bore, an annular sleeve rigidly mounted within said central bore defining a chamber between the sleeve and said counterbore and a flow passage interior of its inside surface, an annular floating seat slidably received in said chamber, means mounting said floating seat in said chamber for limited motion therein and means communicating pressure between said flow passage and beneath said floating seat in the chamber.
Claim 8
Dependent Claim
119 words
An antivibration seat assembly for a valve comprising an annular body having a central bore defining a flow passage, a stationary seat on the downstream side of the body that surrounds said bore, a counterbore of somewhat larger diameter than said central bore and concentric therewith, said counterbore being located downstream of said central bore, an annular sleeve rigidly mounted within said central bore defining a chamber between the sleeve and said counterbore and a flow passage interior of its inside surface, an annular floating seat slidably received in said chamber, means mounting said floating seat in said chamber for limited motion therein and means communicating pressure between said flow passage and beneath said floating seat in the chamber.
Claim 9
Dependent Claim
49 words
The seat assembly of claim 6 wherein said annular floating seat includes one aperture cooperating with said mounting means to limit the sliding movement of said seat, and said aperture permitting limited flow from said flow passage when said floating seat is in engagement with a valve closure member.
Claim 10
Dependent Claim
31 words
The seat assembly of claim 6 wherein said pressure communicating means includes means for providing improved pressure distribution around the periphery between the chamber and the base of the floating seat.
Claim 11
Dependent Claim
32 words
The seat assembly of claim 6 wherein said floating seat is comprised of a material having a low specific gravity and a low coefficient of friction with the surfaces of said chamber.
Claim 12
Dependent Claim
26 words
The seat assembly of claim 6 wherein said body has an annular seat mounting groove, said groove having convergently sloping sidewalls for retaining said stationary seat.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |