US3575431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal assembly
Assignee: Grove Valve and Regulator Co
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Filing: 1968-08-19
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Granted: 1971-04-20
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Expires: 1988-08-19
Abstract
Abstract A main seal assembly for a valve comprising a resilient seal ring carried in an annular groove or recess in one working surface to seal against an opposing working surface. The inner sidewall portions of the recess are sloped in converging relationship from the bottom surface and then merge into generally parallel outer sidewall portions forming a relatively narrow opening. The seal ring is of generally triangular cross section with lateral protuberances that seal against the sloping inner sidewall portions of the recess and is mechanically retained by the narrow outer recess opening. A relatively thin outer protuberance extends freely between the outer sidewall portions of the recess to seal against the opposing working surface.
Inventors
- 👤 Austin U Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:21
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/0227; F16K3/12; F16K5/00; F16K5/06; F16K5/0663; F16K5/0673
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
236 words
A sealing assembly for a valve having a movable valve closure member in a valve body and opposing annular sealing members on said closure member and said body comprising: an annular recess in one of said sealing members, inner sidewall portions of said recess being of sharply convergent relationship outward from the bottom surface of said recess, and, outer sidewall portions of said recess being generally parallel, said sidewall portions being of one-piece construction, a resilient seal ring carried in said recess, said seal ring being of generally triangular cross section with a lateral protuberance on each side thereof adjacent the base thereof engageable with and restrained by the inner portion of one sidewall of said recess, the width of said seal ring at the level of said lateral protuberances being greater than the space between the outer sidewall portions of said recess, and an outer main sealing protuberance extending with clearance between said outer sidewall portions, said lateral protuberances being capable of being inserted between said outer sidewall portions and being sufficiently flexible that when one lateral protuberance is inserted between said outer sidewall portions into the space between said inner portions the other lateral protuberance engages an edge portion of an outer sidewall portion so that said other lateral protuberance may be distorted to rotate said seal ring into said recess, but sufficiently rigid that said inner sidewaLl portions retain said seal ring mechanically.
Claim 2
Dependent Claim
236 words
A sealing assembly for a valve having a movable valve closure member in a valve body and opposing annular sealing members on said closure member and said body comprising: an annular recess in one of said sealing members, inner sidewall portions of said recess being of sharply convergent relationship outward from the bottom surface of said recess, and, outer sidewall portions of said recess being generally parallel, said sidewall portions being of one-piece construction, a resilient seal ring carried in said recess, said seal ring being of generally triangular cross section with a lateral protuberance on each side thereof adjacent the base thereof engageable with and restrained by the inner portion of one sidewall of said recess, the width of said seal ring at the level of said lateral protuberances being greater than the space between the outer sidewall portions of said recess, and an outer main sealing protuberance extending with clearance between said outer sidewall portions, said lateral protuberances being capable of being inserted between said outer sidewall portions and being sufficiently flexible that when one lateral protuberance is inserted between said outer sidewall portions into the space between said inner portions the other lateral protuberance engages an edge portion of an outer sidewall portion so that said other lateral protuberance may be distorted to rotate said seal ring into said recess, but sufficiently rigid that said inner sidewaLl portions retain said seal ring mechanically.
Claim 3
Dependent Claim
18 words
The sealing assembly defined by claim 1 wherein: the base of said generally triangular cross section is convex.
Claim 4
Dependent Claim
26 words
The sealing assembly defined by claim 1 including: a ridge extending from the base of said generally triangular cross section forming an annular inner sealing surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |