US3642249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide valve
Assignee: FOSTER Manufacturing CO Inc
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Filing: 1970-03-03
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Granted: 1972-02-15
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Expires: 1990-03-03
Abstract
Abstract A slide valve includes a cylindrical body provided internally with first and second fluid chambers and having first and second ports extending from its outer cylindrical surface into the first and second fluid chambers, respectively. A sleeve is slidably mounted on the body and includes an internal annular groove which is slidably movable from a closed position wherein the groove is axially spaced from a closed position wherein the groove is axially spaced from the second port to an open position wherein it overlies both the first and second ports. A detent ring surrounds the body and is adapted to engage the sleeve as it moves from its open to its closed position. The detent ring protrudes radially outwardly from the outer surface of the body so as to yieldably resist the sliding movement of the sleeve toward its closed position.
Inventors
- 👤 Lee H Cruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:56
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/26; F16K3/265
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
228 words
A slide valve comprising a cylindrical body internally provided with first and second fluid chambers, first and second fluid ports in the outer cylindrical surface of said body extending into said first and second fluid chambers respectively, a detent member on said cylindrical body and a control sleeve movably mounted on said body and including an internal annular recess formed to overlay said first and second ports to provide a path of communication between said ports, said control sleeve further including internal spaced O-rings slidably supporting said control sleeve on said cylindrical body for reciprocating axial movement of said control sleeve from a closed position of said valve wherein the annular recess of said control sleeve is displaced away from one of said ports to an open position of said valve wherein said annular recess overlies both said first and second ports for communication therebetween, said detent member being positioned on said cylindrical body such that at least one of said O-rings is moved over said detent member, when said control sleeve is moved from one of said positions to the other said position, said one of said O-rings abutting said detent member in the other said position of said control sleeve, the abutment of said detent member and said one O-ring restraining reverse movement of said sleeve from the other said position to the one said position.
Claim 2
Dependent Claim
228 words
A slide valve comprising a cylindrical body internally provided with first and second fluid chambers, first and second fluid ports in the outer cylindrical surface of said body extending into said first and second fluid chambers respectively, a detent member on said cylindrical body and a control sleeve movably mounted on said body and including an internal annular recess formed to overlay said first and second ports to provide a path of communication between said ports, said control sleeve further including internal spaced O-rings slidably supporting said control sleeve on said cylindrical body for reciprocating axial movement of said control sleeve from a closed position of said valve wherein the annular recess of said control sleeve is displaced away from one of said ports to an open position of said valve wherein said annular recess overlies both said first and second ports for communication therebetween, said detent member being positioned on said cylindrical body such that at least one of said O-rings is moved over said detent member, when said control sleeve is moved from one of said positions to the other said position, said one of said O-rings abutting said detent member in the other said position of said control sleeve, the abutment of said detent member and said one O-ring restraining reverse movement of said sleeve from the other said position to the one said position.
Claim 3
Dependent Claim
38 words
A slide valve according to claim 1 wherein said O-riNgs are retained in said control sleeve at opposite end portions thereof, said O-rings being elastomeric and forming a fluidtight seal between said control sleeve and said cylindrical body.
Claim 4
Dependent Claim
23 words
A slide valve according to claim 1 wherein said annular recess overlays said detent member when said sleeve is in its closed position.
Claim 5
Dependent Claim
30 words
A slide valve according to claim 1 wherein one of said fluid ports is freely exposed to the environment outside said body when said valve is in its closed position.
Claim 6
Dependent Claim
25 words
A slide valve according to claim 4 wherein said annular recess overlies the other said fluid port when said sleeve is in its closed position.
Claim 7
Dependent Claim
35 words
A slide valve according to claim 1 wherein said detent member on said cylindrical body protrudes radially outwardly from said body so as to resist sliding movement of said one O-ring over said detent member.
Claim 8
Dependent Claim
122 words
A slide valve according to claim 6, said spaced O-rings including first and second O-rings at opposite end portions of said control sleeve and wherein said detent member is disposed adjacent one of said ports on said cylindrical body and away from the other said port, said valve further including a stop member for limiting movement of said control sleeve, said stop member disposed on said cylindrical body adjacent the other said port and away from said one port such that in the open position of said valve one end portion of said control sleeve abuts said stop ring and at least one said O-ring is positioned intermediate said detent member and said stop member in abutting relationship with said detent member.
Claim 9
Dependent Claim
37 words
A slide valve according to claim 6 wherein said detent member is positioned intermediate said spaced O-rings in open position of said valve, such that one of said O-rings is in abutting relationship with said detent member.
Claim 10
Dependent Claim
14 words
A slide valve according to claim 6 wherein said detent member comprises an O-ring.
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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |