Patent US4132382A successfully refreshed from Google Patents.
US4132382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pinch valve sleeve construction
Assignee: LINATEX CANADA Inc 5235 HENRI BOURASSA BLVD WEST MONTREAL QUEBEC CANADA A CORP OF CANADA
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Filing: 1976-12-29
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Granted: 1979-01-02
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Expires: 1996-12-29
Abstract
Abstract An open ended sleeve for a pinch valve is disclosed. The sleeve has a resilient tubular body member with an elastomeric liner forming a smooth tubular inner wall. A number of circumferential fabric layers surround the liner and are bonded thereto extending along the full length of the body member, a gum layer surrounds the fabric layer and a mounting flange is provided at each end of the body member, each mounting flange has a rigid annular ring therein having a cross section with rounded corners, the ring having an end face perpendicular to the longitudinal axis of the body and a sloped outer face tapered inward from the end of the sleeve. Fabric layers extend around and are bonded to only the outer face and end face of the ring, thus separation between the fabric layers and the ring does not occur when the sleeve collapses.
Inventors
- 👤 Lawrence D. A. Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:56
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/07
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
144 words
An open ended sleeve for a pinch valve comprising a resilient tubular body member including an elastomeric liner forming a smooth tubular inner wall, a plurality of circumferential fabric layers surrounding the liner and bonded thereto extending along the length of the body member, a gum layer surrounding the fabric layer and bonded thereto, a mounting flange at each end of the body member, a rigid annular ring in each mounting flange, each rigid annular ring comprising a first section and a second section, the first section of the ring being cylindrical in shape and adjacent to the liner, the second section of the ring positioned outside the first section and being triangular in cross section, fabric layers extending around and bonded to the outer face and the end face of the second section and extending between the first section and the second section.
Claim 2
Dependent Claim
144 words
An open ended sleeve for a pinch valve comprising a resilient tubular body member including an elastomeric liner forming a smooth tubular inner wall, a plurality of circumferential fabric layers surrounding the liner and bonded thereto extending along the length of the body member, a gum layer surrounding the fabric layer and bonded thereto, a mounting flange at each end of the body member, a rigid annular ring in each mounting flange, each rigid annular ring comprising a first section and a second section, the first section of the ring being cylindrical in shape and adjacent to the liner, the second section of the ring positioned outside the first section and being triangular in cross section, fabric layers extending around and bonded to the outer face and the end face of the second section and extending between the first section and the second section.
Claim 3
Dependent Claim
70 words
The sleeve according to claim 1 wherein the first section of the ring has an end substantially in line with a projection of the end face of the second section of the ring, the first section being parallel to the smooth tubular inner wall and extending beyond the second section to terminate at a rounded end substantially in line with a projection of the outer face of the second section.
Claim 4
Dependent Claim
28 words
The sleeve according to claim 1 wherein the first section of the ring and second section of the ring are spaced apart and together form a triangular configuration.
Claim 5
Dependent Claim
54 words
The sleeve according to claim 1 wherein six polyester fabric layers are incorporated in the sleeve, and wherein three layers extend around the outer face and end face of the second section of the ring, and two layers are positioned between the second section of the ring and the first section of the ring.
Claim 6
Dependent Claim
144 words
An open ended sleeve for a pinch valve comprising a resilient tubular body member including an elastomeric liner forming a smooth tubular inner wall, a plurality of circumferential fabric layers surrounding the liner and bonded thereto extending along the length of the body member, a gum layer surrounding the fabric layer and bonded thereto, a mounting flange at each end of the body member, a rigid annular ring in each mounting flange, each rigid annular ring comprising a first section and a second section, the first section of the ring being cylindrical in shape and adjacent to the liner, the second section of the ring positioned outside the first section and being trapezoidal in cross section, fabric layers extending around and bonded to the outer face and the end face of the second section and extending between the first section and the second section.
Claim 7
Dependent Claim
144 words
An open ended sleeve for a pinch valve comprising a resilient tubular body member including an elastomeric liner forming a smooth tubular inner wall, a plurality of circumferential fabric layers surrounding the liner and bonded thereto extending along the length of the body member, a gum layer surrounding the fabric layer and bonded thereto, a mounting flange at each end of the body member, a rigid annular ring in each mounting flange, each rigid annular ring comprising a first section and a second section, the first section of the ring being cylindrical in shape and adjacent to the liner, the second section of the ring positioned outside the first section and being trapezoidal in cross section, fabric layers extending around and bonded to the outer face and the end face of the second section and extending between the first section and the second section.
Claim 8
Dependent Claim
28 words
The sleeve according to claim 5 wherein the first section of the ring and second section of the ring are spaced apart and together form a trapezoidal configuration.
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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) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |