US3742976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valves
Assignee: Murphy Industries Inc
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Filing: 1971-11-09
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Granted: 1973-07-03
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Expires: 1991-11-09
Abstract
Abstract A pump valve including a seat ring having a conically tapered seat and a valve closure member having a unitary, circular disc adapted to carry an elastomeric seal ring in a groove in the disc periphery to engage the seat. The groove having upper and lower surfaces to fit and to support the seal ring and to key it to the valve disc. The outer periphery of the seal ring may have a double taper to cushion the sealing operation and to provide longer life for the valve.
Inventors
- 👤 S Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:42
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/46; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7859; Y10T137/7866; Y10T137/7867; Y10T137/7868
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
218 words
In a valve including a seat ring having a conically tapered seat and a valve member having a circular disc adapted to carry a seal ring in its periphery to engage said seat, the periphery of said disc having a lower, conically tapered sealing portion cooperable with said tapered seat, the disc having an annular, rounded-bottom groove therein extending around its periphery above said lower tapered sealing portion, a lower surface of the groove extending inwardly of the disc, an upper surface of the groove extending inwardly of the disc to merge into the rounded bottom of said groove, an intermediate surface in said groove extending inwardly from said lower surface at a greater angle than said lower surface, relative to the axis of the valve member, to merge into said rounded bottom, the seal ring being made of an elastomeric material having a cross-sectional shape to conform substantially with and to fit snugly within said groove, the seal ring outer periphery having a lower, conically tapered sealing surface adapted to engage the correspondingly tapered seat ring, the seal ring outer periphery also including an upper conically tapered sealing surface above said lower surface, said upper sealing surface having a greater taper angle, relative to the axis of the valve member, than that of the lower sealing surface.
Claim 2
Dependent Claim
218 words
In a valve including a seat ring having a conically tapered seat and a valve member having a circular disc adapted to carry a seal ring in its periphery to engage said seat, the periphery of said disc having a lower, conically tapered sealing portion cooperable with said tapered seat, the disc having an annular, rounded-bottom groove therein extending around its periphery above said lower tapered sealing portion, a lower surface of the groove extending inwardly of the disc, an upper surface of the groove extending inwardly of the disc to merge into the rounded bottom of said groove, an intermediate surface in said groove extending inwardly from said lower surface at a greater angle than said lower surface, relative to the axis of the valve member, to merge into said rounded bottom, the seal ring being made of an elastomeric material having a cross-sectional shape to conform substantially with and to fit snugly within said groove, the seal ring outer periphery having a lower, conically tapered sealing surface adapted to engage the correspondingly tapered seat ring, the seal ring outer periphery also including an upper conically tapered sealing surface above said lower surface, said upper sealing surface having a greater taper angle, relative to the axis of the valve member, than that of the lower sealing surface.
Claim 3
Dependent Claim
28 words
In a valve according to claim 1 wherein the lower surface of the disc groove extends inwardly of the disc substantially normal to the lower, conically tapered portion.
Claim 4
Dependent Claim
26 words
In a valve according to claim 1 wherein the upper surface of the disc groove extends substantially parallel to the lower surface of the disc groove.
Claim 5
Dependent Claim
138 words
A valve closure comprising: a valve member having a circular disc, the periphery of said disc having a lower sealing surface, the disc also having an annular, rounded-bottom groove therein extending around its periphery above said lower sealing surface, a lower surface of the groove extending inwardly of the disc, an upper surface of the groove extending inwardly of the disc substantially parallel to the lower surface of the groove to merge into the rounded bottom of the groove, an intermediate surface in said groove extending inwardly from said lower surface at a greater angle than said lower surface, relative to the axis of the valve member, to merge into the rounded bottom, an elastomeric seal ring in said groove, the seal ring having a cross-sectional shape to conform substantially with and to fit tightly within said groove.
Claim 6
Dependent Claim
138 words
A valve closure comprising: a valve member having a circular disc, the periphery of said disc having a lower sealing surface, the disc also having an annular, rounded-bottom groove therein extending around its periphery above said lower sealing surface, a lower surface of the groove extending inwardly of the disc, an upper surface of the groove extending inwardly of the disc substantially parallel to the lower surface of the groove to merge into the rounded bottom of the groove, an intermediate surface in said groove extending inwardly from said lower surface at a greater angle than said lower surface, relative to the axis of the valve member, to merge into the rounded bottom, an elastomeric seal ring in said groove, the seal ring having a cross-sectional shape to conform substantially with and to fit tightly within said groove.
Claim 7
Dependent Claim
47 words
A valve closure according to claim 4 wherein the seal ring outer periphery has a lower, conically tapered sealing surface and an upper, conically tapered sealing surface having a greater taper angle, relative to the axis of the valve member, than that of the lower sealing surface.
Claim 8
Dependent Claim
18 words
A valve closure according to claim 4 wherein the lower sealing surface of the disc is conically tapered.
Claim 9
Dependent Claim
23 words
A valve closure according to claim 4 wherein the lower surface of the disc groove extends substantially normal to said lower 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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |