US3658093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve having expandable sealing means
Assignee: Individual
•
Filing: 1970-08-12
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Granted: 1972-04-25
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Expires: 1990-08-12
Abstract
Abstract A valve having a body with an internal sealing surface and spaced apart port openings, the body having a shaft opening therein, a gate member rotatably supported in the body dividing the interior of the valve body into separate flow chambers and having a continuous gate sealing surface therearound in close proximity to the body sealing surface and having a continuous groove in the gate sealing surface, the gate member having a shaft portion extending externally of the body through the body shaft opening, the gate member having a passageway in the shaft portions communicating the continuous groove with the exterior of the valve body, an elongated expandable gasket member positioned in the groove in the gate sealing surface and having communication with the passageway, and means externally of the body of applying pressure by way of the passageway to the gasket member to expand the gasket member into sealing engagement with the body sealing surface.
Inventors
- 👤 Creal E Kirkwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:55
CPC Classifications
F; F16; F16K; F16K39/00; F16K39/06; F16K11/00; F16K11/02; F16K11/08; F16K11/085; F16K11/0853; Y; Y10; Y10T; Y10T137/00; Y10T137/5762; Y10T137/8593; Y10T137/86493; Y10T137/86839
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
192 words
A valve comprising: a body having an internal sealing surface and spaced apart port openings, the body having a shaft opening therein; a gate member rotatably supported in the body dividing the interior of the body into separate flow chambers and having a continuous gate sealing surface therearound in close proximity to the body sealing surface, and having a continuous groove in the gate sealing surface, the gate member having a shaft portion extending externally of said body through said shaft opening and having a passageway in said gate member communicating said groove with the exterior of the body by way of said shaft portion; an elongated expandable gasket member positioned in said groove in said gate sealing surface, the expandable gasket having communication with said passageway, said expandable gasket including a first resilient tubular portion received in said groove and a second elastomer portion overlying said resilient tubular portion and being bonded to said gate member; and means externally of said body of applying pressure by way of said passageway to said gasket member to expand said tubular portion and thereby said elastomer portion into engagement with said body sealing surface.
Claim 2
Dependent Claim
192 words
A valve comprising: a body having an internal sealing surface and spaced apart port openings, the body having a shaft opening therein; a gate member rotatably supported in the body dividing the interior of the body into separate flow chambers and having a continuous gate sealing surface therearound in close proximity to the body sealing surface, and having a continuous groove in the gate sealing surface, the gate member having a shaft portion extending externally of said body through said shaft opening and having a passageway in said gate member communicating said groove with the exterior of the body by way of said shaft portion; an elongated expandable gasket member positioned in said groove in said gate sealing surface, the expandable gasket having communication with said passageway, said expandable gasket including a first resilient tubular portion received in said groove and a second elastomer portion overlying said resilient tubular portion and being bonded to said gate member; and means externally of said body of applying pressure by way of said passageway to said gasket member to expand said tubular portion and thereby said elastomer portion into engagement with said body sealing surface.
Claim 3
Dependent Claim
86 words
A valve according to claim 1 wherein said gate member has two spaced apart continuous grooves in said gate sealing surface, and wherein said expandable gasket member is positioned in both said grooves, and wherein said means externally of said body of applying pressure applies such pressure to said expandable gasket in both said grooves to expand said gaskets in both said grooves into engagement with said body sealing surface forming a continuous closed passageway between said body sealing surface and said gate member sealing surface.
Claim 4
Dependent Claim
33 words
A valve according to claim 2 including a small diameter test opening in said body communicating with said passageway formed by said spaced expandable gaskets between said body and gate member sealing surfaces.
Claim 5
Dependent Claim
22 words
A valve according to claim 3 wherein said test opening is normally closed by a small test valve exteriorly of said body.
Claim 6
Dependent Claim
45 words
A valve according to claim 2 wherein said spaced continuous grooves in said sealing surface include a gasket passageway therebetween, and wherein said expandable gasket member is a single, uninterrupted length of gasket member positioned in said spaced paralleled grooves and through said gasket passageway.
Claim 7
Dependent Claim
25 words
A valve according to claim 1 wherein said body internal sealing surface is cylindrical, said shaft opening being coaxial with said cylindrical body sealing surface.
Claim 8
Dependent Claim
153 words
A valve according to claim 1 wherein said body internal sealing surface is cylindrical, said shaft opening being coaxial with said cylindrical body sealing surface, and wherein said gate member is defined by a main portion substantially paralleling the cylindrical axis of said body sealing surface, a first semicircular wing portion extending from the main portion at one end thereof in a plane substantially perpendicular to the plane of the main portion, and a second semicircular wing portion extending from the main portion at the opposite end thereof in a plane substantially perpendicular to the plane of the main portion, the second wing portion extending in the direction opposite the first wing portion, the parallel sides of the main portion and the circular periphery of the first and second wing portions forming said continuous gate sealing surface, the same being in close proximity with the total circumference of said body cylindrical sealing surface.
Claim 9
Dependent Claim
103 words
A valve according to claim 7 wherein said gate member includes two spaced apart continuous grooves in said sealing surface, said continuous grooves being connected by a gasket passageway, and including a lateral passageway extending from each said groove to said passageway in said shaft, and wherein said expandable gasket member is a single uninterrupted length of gasket member positioned in said spaced parallel grooves and through said gasket passageway, and wherein one end of said gasket member is positioned in one of said lateral passageways, and the other end of said gasket member is positioned in the other of said lateral passageways.
Claim 10
Dependent Claim
55 words
A valve according to claim 1 wherein said expandable gasket includes a resilient tubular portion received in said groove, and including a metal tube of external diameter equal to or less than the internal diameter of said resilient tubular portion and being received in at least part of the length of said resilient tubular portion.
Claim 11
Dependent Claim
51 words
A valve according to claim 1 wherein said expandable gasket includes a resilient tubular portion received in said groove, and including a metal rod of external diameter less than the internal diameter of said resilient tubular portion and being received in a part of the length of said resilient tubular portion.
Claim 12
Dependent Claim
53 words
A valve according to claim 1 wherein said body has a plurality of spaced apart ports therein communicating with said body sealing surface and wherein said gate member divides the interior of said body into separate flow chambers whereby communication is provided between different ports according to the position of said gate member.
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |