US3695579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Individual
•
Filing: 1971-06-01
•
Granted: 1972-10-03
•
Expires: 1991-06-01
Abstract
Abstract A valve having a bearing ring of low friction material between each seat and the flowway through the valve body. Rings of elastomeric material seal between the bearing ring and each of the seat and flowway.
Inventors
- 👤 Herbert Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:30
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0663; F16K5/0673; Y; Y10; Y10T; Y10T137/00; Y10T137/6198
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
131 words
A valve, comprising a body having a flowway therethrough, a closure member within the valve body for opening and closing the flowway, an annular seat mounted within the flowway for engaging at one end with one side of the closure member, a bearing ring disposed between the seat and flowway and having annular surfaces on its inner and outer sides fitting closely against conforming surfaces on the seat and the flowway, respectively, a first ring sealing between the conforming annular surfaces on the bearing ring and flowway, and a second ring sealing between the conforming annular surfaces on the bearing ring and seat, said bearing ring being formed of polytetrafluoroethylene or other material having low friction characteristics; and said sealing rings being formed of rubber or other readily deformable elastomeric material.
Claim 2
Dependent Claim
131 words
A valve, comprising a body having a flowway therethrough, a closure member within the valve body for opening and closing the flowway, an annular seat mounted within the flowway for engaging at one end with one side of the closure member, a bearing ring disposed between the seat and flowway and having annular surfaces on its inner and outer sides fitting closely against conforming surfaces on the seat and the flowway, respectively, a first ring sealing between the conforming annular surfaces on the bearing ring and flowway, and a second ring sealing between the conforming annular surfaces on the bearing ring and seat, said bearing ring being formed of polytetrafluoroethylene or other material having low friction characteristics; and said sealing rings being formed of rubber or other readily deformable elastomeric material.
Claim 3
Dependent Claim
27 words
A valve of the character defined in claim 1, wherein the opposite ends of said bearing ring are disposed between oppositely facing shoulders on the valve body.
Claim 4
Dependent Claim
29 words
A valve of the character defined in claim 1, wherein the opposite ends of said bearing ring are disposed between oppositely facing shoulders on the valve body and seat.
Claim 5
Dependent Claim
25 words
A valve of the character defined in claim 1, wherein the opposite ends of said bearing ring are disposed oppositely facing shoulders on the seat.
Claim 6
Dependent Claim
24 words
A valve of the character defined in claim 1, wherein said first seal ring is within a groove between the seat and the flowway.
Claim 7
Dependent Claim
31 words
A valve of the character defined in claim 1, wherein said first seal ring engages an end surface of the bearing ring and an oppositely facing surface of the valve body.
Claim 8
Dependent Claim
64 words
A valve of the character defined in claim 1, including a washer type spring having its inner and outer edges engaged with oppositely facing surfaces of the seat and valve body to urge the inner end of the seat against the closure member, at least one of the surfaces engaged by the spring being formed of polytetrafluoroethylene or other material having low friction characteristics.
Claim 9
Dependent Claim
28 words
A valve of the character defined in claim 7, wherein said one surface is on a ring of said material carried within a groove of the valve body.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |