Patent US4496132A successfully refreshed from Google Patents.
US4496132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sleeve valve with integral control chamber
Assignee: Bermad LP
•
Filing: 1982-12-02
•
Granted: 1985-01-29
•
Expires: 2002-12-02
Abstract
Abstract A sleeve valve comprising an elastomer sleeve folded onto itself, the two peripheral ends being fixedly held so that an integral control chamber is created, an opening being provided in said chamber for connecting it to a control pressure source, no housing being required.
Inventors
- 👤 Zvi Weingarten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:09
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
A sleeve valve comprising a generally circular elastomer sleeve folded onto itself to define an annulus, the two peripheral ends being fixedly held and sealed with respect to each other to provide an entirely integral, expandable control chamber formed within said annulus, means providing an opening to said chamber for connection to a source of control pressure, portions of the inner wall of the annulus closed together when said chamber is pressurized to seal the valve, said portions closed together at a position including a plane axially spaced downstream from any position between said peripheral ends.
Claim 2
Dependent Claim
96 words
A sleeve valve comprising a generally circular elastomer sleeve folded onto itself to define an annulus, the two peripheral ends being fixedly held and sealed with respect to each other to provide an entirely integral, expandable control chamber formed within said annulus, means providing an opening to said chamber for connection to a source of control pressure, portions of the inner wall of the annulus closed together when said chamber is pressurized to seal the valve, said portions closed together at a position including a plane axially spaced downstream from any position between said peripheral ends.
Claim 3
Dependent Claim
21 words
A sleeve valve as defined in claim 1 wherein the said inner wall portions are provided with an integral sealing bead.
Claim 4
Dependent Claim
109 words
A sleeve valve comprising a generally circular elastomer sleeve folded onto itself to define an annulus and to form an integral, expandable control chamber within said annulus, the two peripheral ends of the sleeve being sealed with respect to each other and being fixedly held in close juxtaposition with an intermediary element which provides means communicating with said annulus providing a connection to a source of control pressure, portions of the inner wall of the annulus closed together when said chamber is pressurized to prevent flow through the valve, said portions closed together at a position including a plane axially spaced downstream from any position between said peripheral ends.
Claim 5
Dependent Claim
109 words
A sleeve valve comprising a generally circular elastomer sleeve folded onto itself to define an annulus and to form an integral, expandable control chamber within said annulus, the two peripheral ends of the sleeve being sealed with respect to each other and being fixedly held in close juxtaposition with an intermediary element which provides means communicating with said annulus providing a connection to a source of control pressure, portions of the inner wall of the annulus closed together when said chamber is pressurized to prevent flow through the valve, said portions closed together at a position including a plane axially spaced downstream from any position between said peripheral ends.
Claim 6
Dependent Claim
20 words
A sleeve valve as defined in claim 3 wherein the inner wall portions are provided with an integral sealing bead.
References Cited (Backward Citations)
GB634975A
Cited
GB689229A
Cited
NL70002C
Cited
DE1125243B
Cited
US2998198A
Cited
US3301443A
Cited
US3685538A
Cited
US3690344A
Cited
US3936028A
Cited
JPS5690167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |