Patent US4580763A successfully refreshed from Google Patents.
US4580763A
Expired / Lapsed
US
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Seal-seat for use in ball valves
Assignee: Velan Inc
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Filing: 1984-01-26
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Granted: 1986-04-08
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Expires: 2004-01-26
Abstract
Abstract In a ball-type valve having a valve body and an annular seat therein for accommodating the ball, the improvement comprising adapting the seat whereby when the valve is in its open or closed position, the ball compresses the seat to seal the same against the valve body and at the same time tensions the seat to seal thereagainst. Also disclosed is a method of forming a seal between the body of a ball valve and the ball thereof, comprising the steps of providing a seat intermediate the body and the ball and moving the ball toward the body upon assembly of the valve whereby to compress a portion of the seat against the body and at the same time to tension a portion of the seat against the ball, thereby forming the seal between the body and the ball.
Inventors
- 👤 Adolf K. Velan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:41
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0626; F16K5/0642; F16K5/0663; F16K5/0668
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
139 words
An annular seal-seat for use in a high pressure valve having a valve body and a ball, said seal-seat comprising a first working portion adapted to be received with a cavity defined by walls of the valve body for use in mounting the seal-seat, said first working portion comprising a plurality of peripherally extending cavity wall engaging faces, angularly disposed one to another to define a faceted nose portion having thereon a pair of apex-shaped ridges and an apex-shaped groove, and a second working portion extending in cantilever fashion radially outwardly from said first portion and adapted to sealingly engage the ball whereby during the assembly of the valve to restrict fluid flow therethrough when the valve is in a closed position, said first portion is subjected to compression forces and said second portion is subjected to tensile forces.
Claim 2
Dependent Claim
139 words
An annular seal-seat for use in a high pressure valve having a valve body and a ball, said seal-seat comprising a first working portion adapted to be received with a cavity defined by walls of the valve body for use in mounting the seal-seat, said first working portion comprising a plurality of peripherally extending cavity wall engaging faces, angularly disposed one to another to define a faceted nose portion having thereon a pair of apex-shaped ridges and an apex-shaped groove, and a second working portion extending in cantilever fashion radially outwardly from said first portion and adapted to sealingly engage the ball whereby during the assembly of the valve to restrict fluid flow therethrough when the valve is in a closed position, said first portion is subjected to compression forces and said second portion is subjected to tensile forces.
Claim 3
Dependent Claim
23 words
A seal-seat as defined in claim 1, wherein said second portion is adapted to extend circumferentially of the ball, when in operative position.
Claim 4
Dependent Claim
21 words
A seal-seat as defined in claim 2, wherein said second portion includes an annular protuberance thereon adapted to engage said ball.
Claim 5
Dependent Claim
28 words
A seal-seat as defined in claim 1, wherein said second portion, when viewed in cross-section, comprises an elongated tongue-like configuration, its thickness tapering toward the free end thereof.
Claim 6
Dependent Claim
29 words
A seal-seat as defined in claim 4, wherein said free end comprises a pair of peripheral faces angularly disposed one to another and providing a further apex-shaped ridge thereon.
Claim 7
Dependent Claim
19 words
A seal-seat as defined in claim 5, wherein the angular disposition of said pair of peripheral faces measures 90°.
Claim 8
Dependent Claim
40 words
A seal-seat as defined in claim 5, wherein one of said pair of faces, adjacent said free end, extends to terminate at an adjoining peripheral face angularly disposed thereto and adapted to face toward the ball, when in operative position.
Claim 9
Dependent Claim
24 words
A seal-seat as defined in claim 1, wherein the angular disposition of said peripheral faces one to another forming said apex-shaped ridges exceeds 90°.
Claim 10
Dependent Claim
26 words
A seal-seat as defined in claim 1, wherein the angular disposition of said peripheral faces one to another forming said apex-shaped groove measures less than 90°.
Claim 11
Dependent Claim
29 words
A seal-seat as defined in claim 9, wherein the angular disposition between said one of said pair of faces and said adjoining peripheral face measures in excess of 90°.
Claim 12
Dependent Claim
21 words
A seal-seat as defined in claim 10, wherein said adjoining peripheral face extends tangentially respective the ball, when in operative position.
Claim 13
Dependent Claim
27 words
A seal-seat as defined in claim 11, including an annular protuberance on said adjoining peripheral face adapted to sealingly engage with the ball, when in operative position.
Claim 14
Dependent Claim
47 words
A seal-seat as defined in claim 5, wherein one of said pair of faces adjacent said free end extends to terminate at an adjoining peripheral face, the latter face having its major portion extending linearly and in spaced relation to the valve body, when in operative position.
Claim 15
Dependent Claim
13 words
A seal-seat as defined in claim 1, including said valve body and ball.
Claim 16
Dependent Claim
19 words
A seal-seat as defined in claim 1, wherein said first and second portions comprise glass and metal impregnated teflon.
Claim 17
Dependent Claim
16 words
A seal-seat as defined in claim 15, wherein said impregnations comprise 15-30% of the Nylon material.
Claim 18
Dependent Claim
19 words
A seal-seat as defined in claim 1, wherein said first and second portions comprise glass and metal impregnated Torlon.
Claim 19
Dependent Claim
16 words
A seal-seat as defined in claim 17, wherein said impregnations comprise 15-30% of the Torlon material.
References Cited (Backward Citations)
US3030068A
Cited
US3384341A
Cited
US3488033A
Cited
US3547403A
Cited
US3940107A
Cited
US4368755A
Cited
US4285642A
Cited
US4418887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |