US4779841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assembly and method for installing and retaining valve seals
Assignee: Fisher Controls International LLC
•
Filing: 1986-07-09
•
Granted: 1988-10-25
•
Expires: 2006-07-09
Abstract
Abstract An assembly for retaining a seal ring in a seating surface of a valve is provided having a circumferential groove disposed in the seating surface for receiving the seal ring. The groove has a pair of substantially opposed side walls, one of which includes a first retention member extending into the groove. The opposite side wall is provided with a circumferential slot which is accessible from outside the valve sealing surface through a passage. A second circumferential retention member is inserted into the slot throughout the passage and protrudes into the groove such that both retention members cooperate to retain the seal ring within the seating surface.
Inventors
- 👤 Andrew Pupillo
- 👤 Jon A. Babcock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:47
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K5/00; F16K5/06; F16K5/0663; F16K5/0673; F16K5/0678; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/061; F16J15/062; F16K1/2263
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
A method for retaining a shouldered seal ring in a seating surface of a valve comprising the steps of: providing a circumferential groove in the valve seating surface, said groove having a pair of substantially opposed side walls and a base portion, one of the groove side walls having a first retention flange member extending into the groove, the other groove side wall having a slot; providing a passage from outside said valve body to said slot; inserting the seal ring into said groove, said first retention flange member overlying a shoulder portion of said seal ring; and inserting the second retention flange member through said passage and into said slot to overlie a second shoulder portion of said seal ring.
Claim 2
Independent Claim
121 words
A method for retaining a shouldered seal ring in a seating surface of a valve comprising the steps of: providing a circumferential groove in the valve seating surface, said groove having a pair of substantially opposed side walls and a base portion, one of the groove side walls having a first retention flange member extending into the groove, the other groove side wall having a slot; providing a passage from outside said valve body to said slot; inserting the seal ring into said groove, said first retention flange member overlying a shoulder portion of said seal ring; and inserting the second retention flange member through said passage and into said slot to overlie a second shoulder portion of said seal ring.
Claim 3
Dependent Claim
51 words
A method as in claim 1 wherein said method comprises the further step of inserting a backing ring into the base portion of said groove before inserting said seal ring, said backing ring adapted for urging the shoulder portions of said seal ring toward the first and second retention flange members.
Claim 4
Dependent Claim
125 words
An assembly for retaining a seal ring in a seating surface of a valve comprising: a circumferential groove disposed in the seating surface for receiving the seal ring, the groove having a pair of substantially opposed side wall, one of said side walls including a first circumferential retention member extending into the groove, the other side wall including a circumferential slot, said seating surface including a passage accessing said slot extending from outside the valve seating surface; and a second circumferential retention flange member insertable through said passage and receivable in said slot with a portion of said second flange member extending into the groove such that said first and second flange members can engage the seal ring to retain it within the seating surface.
Claim 5
Dependent Claim
125 words
An assembly for retaining a seal ring in a seating surface of a valve comprising: a circumferential groove disposed in the seating surface for receiving the seal ring, the groove having a pair of substantially opposed side wall, one of said side walls including a first circumferential retention member extending into the groove, the other side wall including a circumferential slot, said seating surface including a passage accessing said slot extending from outside the valve seating surface; and a second circumferential retention flange member insertable through said passage and receivable in said slot with a portion of said second flange member extending into the groove such that said first and second flange members can engage the seal ring to retain it within the seating surface.
Claim 6
Dependent Claim
23 words
An assembly as in claim 3 wherein said passage accessing said slot extends from the flow chamber of said valve to said slot.
Claim 7
Dependent Claim
17 words
An assembly as in claim 4 wherein said sealing ring is formed in a plurality of sections.
References Cited (Backward Citations)
US3105672A
Cited
US3642248A
Cited
US4006883A
Cited
US3986699A
Cited
US4113268A
Cited
US4220314A
Cited
US4398695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-25 | 1992-04-25 | 1992-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-25 | 1996-04-25 | 1996-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-25 | 2000-04-25 | 2000-10-25 | $7700.00 | Window Closed / Lapsed |