US4662598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sleeve valve with integral control chamber
Assignee: Bermad LP
•
Filing: 1984-12-31
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Granted: 1987-05-05
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Expires: 2004-12-31
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 02:28
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
A sleeve valve comprising a generally circular elastomer sleeve folded onto itself to define an annulus, said sleeve having two peripheral ends, said ends being fixedly held in at least partial sealed engagement so that an integral control chamber is created within said annulus, means providing an opening in said chamber for connecting said chamber to a control pressure source, and an inner wall of the annulus including portions adapted to close together when said chamber is pressurized to seal the valve, said portions closing together at a position including a plane axially spaced downstream from any position between said peripheral ends.
Claim 2
Dependent Claim
102 words
A sleeve valve comprising a generally circular elastomer sleeve folded onto itself to define an annulus, said sleeve having two peripheral ends, said ends being fixedly held in at least partial sealed engagement so that an integral control chamber is created within said annulus, means providing an opening in said chamber for connecting said chamber to a control pressure source, and an inner wall of the annulus including portions adapted to close together when said chamber is pressurized to seal the valve, said portions closing together at a position including a plane axially spaced downstream from any position between said peripheral ends.
Claim 3
Dependent Claim
20 words
A sleeve valve as claimed in claim 1 wherein said inner wall portions are provided with an integral projection bead.
Claim 4
Dependent Claim
22 words
A sleeve valve as claimed in claim 1, wherein said ends are oriented coaxial with the longitudinal central axis through said annulus.
Claim 5
Dependent Claim
20 words
A sleeve valve as claimed in claim 1 wherein said ends are removably clamped in said engagement by clamping means.
Claim 6
Dependent Claim
18 words
A sleeve valve as claimed in claim 4 wherein said clamping means comprises a pair of flange members.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |