US3586057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid actuated pipeline patch
Assignee: Individual
•
Filing: 1969-07-25
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Granted: 1971-06-22
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Expires: 1989-07-25
Abstract
Abstract Pipe containing fluid under pressure is patched with a hydraulic ram which firmly draws a resilient pad with a metallic backing thereon tightly against the pipe over the hole thereby sealing same and permitting the metallic backing to be welded to the pipe.
Inventors
- 👤 Lucian T Lambert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:15
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/16; F16L55/168; F16L55/17; F16L55/1705
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
133 words
A repair device for pipes containing fluid under pressure and having a hole therein comprising: a resilient pad having a metallic backing thereon larger than said pad, said pad and metallic backing being concaved in cross section to conform to the outer curvature of said pipe and positionable on said pipe over said hole therein; a tension plate supportable above said pad and backing; flexible strap members adapted to encircle said pipe, the ends of said members retained by said tension plate; a pressure fluid actuated cylinder affixed to said tension plate and having a vertically operable ram releasably engaged with said backing; and means for energizing said cylinder whereby said ram draws said resilient pad tightly against said pipe, sealing said hole and retaining said backing to said pipe for welding thereto.
Claim 2
Dependent Claim
133 words
A repair device for pipes containing fluid under pressure and having a hole therein comprising: a resilient pad having a metallic backing thereon larger than said pad, said pad and metallic backing being concaved in cross section to conform to the outer curvature of said pipe and positionable on said pipe over said hole therein; a tension plate supportable above said pad and backing; flexible strap members adapted to encircle said pipe, the ends of said members retained by said tension plate; a pressure fluid actuated cylinder affixed to said tension plate and having a vertically operable ram releasably engaged with said backing; and means for energizing said cylinder whereby said ram draws said resilient pad tightly against said pipe, sealing said hole and retaining said backing to said pipe for welding thereto.
Claim 3
Dependent Claim
80 words
A repair device for pipes as in claim 1 wherein: said tension plate includes a flange member along each longitudinal edge thereof, each of said flange members having tandem spaced transverse keyhole slots therein; said flexible strap members are chains, adapted to encircle said pipe, one end of each chain being held in one of said slots on one of said flange members, the other end of each chain being held in one of said slots on said other flange.
Claim 4
Dependent Claim
56 words
A repair device for pipes as in claim 1 including a plurality of tandem spaced horizontal C-shaped ear segments protruding upwardly from the upper surface of said metallic backing and wherein said operable ram includes a vertical pressure applicator member having at the lower end thereof a horizontal engagement portion releasably engaged within said ear segments.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |