US3776276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve seal
Assignee: Individual
•
Filing: 1971-03-15
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Granted: 1973-12-04
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Expires: 1991-03-15
Abstract
Abstract A valve assembly in which a tubular seal ring circumscribes a valve port and has a flat end face slidably and sealingly engaged with the opposing flat face of a valve member having another port, the seal ring having a resilient seal engaged in a bore between a shoulder in the seal ring and an opposing stationary shoulder and the seal ring also having a skirt extending into the valve port and engaged by a spring to bias the flat face of the seal ring into normal engagement with the opposing flat face.
Inventors
- 👤 M Stiltner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:55
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/0655; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86558; Y10T137/86879
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
241 words
In a valve assembly, including a stationary member having a port, a shiftable member having a port, means for shifting the latter member between a position at which said ports are in registry and a position at which said ports are out of registry, one of said members having a flat face through which its port opens, the other of said members carrying a tubular metallic onepiece seal ring circumscribing said port in the latter member and having an annular flat end face slidably and sealingly engaged with said flat face of said one of said members, said seal carrying member having a bore in which said seal ring is disposed, said bore providing an annular shoulder, said metallic seal ring having an external annular shoulder opposed to said shoulder in said bore, a skirt extending axially of said metallic seal ring from said external shoulder into said bore in said seal carrying member, said skirt having an inside diameter less than said bore and terminating in axially spaced relation to the bottom of said bore, and resilient seal means interposed between and engaged with said shoulders and extending about said skirt said seal means being engaged with said skirt and the wall of said bore to provide seal means in said bore between the exterior of said metallic seal ring and the seal carrying member, said seal means also resiliently resisting inward movement of said metallic ring in said bore.
Claim 2
Dependent Claim
241 words
In a valve assembly, including a stationary member having a port, a shiftable member having a port, means for shifting the latter member between a position at which said ports are in registry and a position at which said ports are out of registry, one of said members having a flat face through which its port opens, the other of said members carrying a tubular metallic onepiece seal ring circumscribing said port in the latter member and having an annular flat end face slidably and sealingly engaged with said flat face of said one of said members, said seal carrying member having a bore in which said seal ring is disposed, said bore providing an annular shoulder, said metallic seal ring having an external annular shoulder opposed to said shoulder in said bore, a skirt extending axially of said metallic seal ring from said external shoulder into said bore in said seal carrying member, said skirt having an inside diameter less than said bore and terminating in axially spaced relation to the bottom of said bore, and resilient seal means interposed between and engaged with said shoulders and extending about said skirt said seal means being engaged with said skirt and the wall of said bore to provide seal means in said bore between the exterior of said metallic seal ring and the seal carrying member, said seal means also resiliently resisting inward movement of said metallic ring in said bore.
Claim 3
Dependent Claim
26 words
In a valve assembly as defined in claim 1, a compression spring interposed between the bottom of said bore and the inner end of said skirt.
Claim 4
Dependent Claim
33 words
In a valve assembly as defined in claim 1, said resilient seal means comprising an O-ring and a pair of back-up rings respectively engaged with one of said shoulders and with said O-ring.
Claim 5
Dependent Claim
51 words
In a valve assembly as defined in claim 1, said resilient seal means comprising an O-ring and a pair of back-up rings respectively engaged with one of said shoulders and with said O-ring, and a compression spring interposed between the bottom of said bore and the inner end of said skirt.
Claim 6
Dependent Claim
65 words
In a valve assembly as defined in claim 1, the port through said sEal ring being smaller than the inner periphery of said end face of said seal ring, an inwardly tapered face extending from said inner periphery of said end face to said port, and the annular area of said shoulder on said body being greater than the annular area of said end face.
Claim 7
Dependent Claim
29 words
A valve assembly as defined in claim 1, wherein said seal ring has a bevelled surface leading from said end face to the inside diameter of said seal ring.
Claim 8
Dependent Claim
42 words
A valve assembly as defined in claim 1, wherein an enlarged bore is provided in said body extending outwardly from said first mentioned bore, said seal ring and the flat end face thereon extending beyond said seal means into said enlarged bore.
Claim 9
Dependent Claim
63 words
A valve assembly as defined in claim 1, wherein an enlarged bore is provided in said body extending outwardly from said first mentioned bore, said seal ring and the flat end face thereon extending beyond said seal means into said enlarged bore, said seal ring having a bevelled surface leading from said flat end face to the inside diameter of said seal ring.
Claim 10
Dependent Claim
84 words
A valve assembly as defined in claim 1, wherein an enlarged bore is provided in said body extending outwardly from said first mentioned bore, said seal ring and the flat end face thereon extending beyond said seal means into said enlarged bore, and having a dimension in the direction of movement of said shiftable member greater than said port in said stationary member, whereby said flat end face on said seal closes said port during transitional movement of said shiftable member between said positions.
Claim 11
Dependent Claim
195 words
In a valve assembly, including a stationary member having a plurality of ports, a shiftable member having a plurality of ports, means for shifting the latter member between a position at which said ports of the respective members are in registry and a position at which said ports of the respective members are out of registry, one of said members having a flat face through which its ports open, the other of said members carrying a tubular one-piece seal in the ports thereon and circumscribing the respective ports in said latter member and having a flat end face slidably and sealingly engaged with said flat face of said one of said members, said seal carrying member having a cavity in which said seal ring is disposed, resilient sealing means in said cavity forming a seal between said seal and said seal carrying member, said seal and end flange providing said flat end face, and having a dimension in the direction of movement of said shiftable member greater than said port in said stationary member, whereby said flat end face on said seal closes said port during transitional movement of said shiftable member between said positions.
Claim 12
Dependent Claim
195 words
In a valve assembly, including a stationary member having a plurality of ports, a shiftable member having a plurality of ports, means for shifting the latter member between a position at which said ports of the respective members are in registry and a position at which said ports of the respective members are out of registry, one of said members having a flat face through which its ports open, the other of said members carrying a tubular one-piece seal in the ports thereon and circumscribing the respective ports in said latter member and having a flat end face slidably and sealingly engaged with said flat face of said one of said members, said seal carrying member having a cavity in which said seal ring is disposed, resilient sealing means in said cavity forming a seal between said seal and said seal carrying member, said seal and end flange providing said flat end face, and having a dimension in the direction of movement of said shiftable member greater than said port in said stationary member, whereby said flat end face on said seal closes said port during transitional movement of said shiftable member between said positions.
References Cited (Backward Citations)
US2030458A
Cited
US2796230A
Cited
US2822823A
Cited
US2858851A
Cited
US2985421A
Cited
US3329168A
Cited
US3368793A
Cited
US3432141A
Cited
US3494377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |