Patent US4465105A successfully refreshed from Google Patents.
US4465105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible hose
Assignee: Dunlop Ltd
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Filing: 1982-09-24
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Granted: 1984-08-14
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Expires: 2002-09-24
Abstract
Abstract A flexible hose comprising a main fluid retaining carcass and a secondary fluid retaining carcass enclosing at least part of said main carcass, said hose including means to collect and detect fluid leaking from said main carcass. Said means comprises a circumferential opening formed in a nipple portion of an end fitting to which corresponding one ends of said main and secondary carcasses are connected and an axially extending passage leading from said opening to a leak detector.
Inventors
- 👤 Christopher J. Slater
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:21
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/28; G01M3/2807; G01M3/283; F; F16; F16L; F16L33/00; F16L33/01; F16L2201/00; F16L2201/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
103 words
A flexible hose comprising a main fluid retaining carcass, a secondary fluid retaining carcass which encloses at least part of said main carcass, said main and secondary carcasses being connected at corresponding one ends to a nipple portion of an end fitting, said nipple portion having an annular rib adjacent to and axially outwards of the end of said main carcass, and a circumferentially continuous groove formed in the radial outer surface of said rib whereby fluid leaking from said main carcass may pass into and flow around said groove, and an axially extending passage leading from said groove to a leak detector.
Claim 2
Dependent Claim
103 words
A flexible hose comprising a main fluid retaining carcass, a secondary fluid retaining carcass which encloses at least part of said main carcass, said main and secondary carcasses being connected at corresponding one ends to a nipple portion of an end fitting, said nipple portion having an annular rib adjacent to and axially outwards of the end of said main carcass, and a circumferentially continuous groove formed in the radial outer surface of said rib whereby fluid leaking from said main carcass may pass into and flow around said groove, and an axially extending passage leading from said groove to a leak detector.
Claim 3
Dependent Claim
23 words
A hose according to claim 1 wherein said leak detector is mounted on said end fitting externally of said main and secondary carcasses.
Claim 4
Dependent Claim
29 words
A hose according to claim 2 wherein said leak detector is operable in response to an increase in fluid pressure beyond a predetermined value to generate a warning signal.
Claim 5
Dependent Claim
32 words
A hose according to claim 3 wherein said leak detector includes a control unit triggered by an increase in fluid pressure beyond said predetermined value to activate local and/or remote warning device(s).
Claim 6
Dependent Claim
14 words
A hose according to claim 4 wherein said local warning device(s) is/are activated intermittently.
Claim 7
Dependent Claim
35 words
A hose according to claim 1 wherein said secondary carcass encloses the entire length of said main carcass and both said main and secondary carcasses are connected at each end to a respective end fitting.
Claim 8
Dependent Claim
29 words
A hose according to claim 6 wherein each end fitting has a nipple portion provided with an annular rib into which fluid leaking from said main carcass may pass.
Claim 9
Dependent Claim
14 words
A hose according to claim 1 including one or more layers of buoyancy material.
Claim 10
Dependent Claim
24 words
A hose according to claim 1 wherein means is provided to control the radial expansion of said secondary carcass relative to said main carcass.
Claim 11
Dependent Claim
25 words
A hose according to claim 9 wherein said secondary carcass has a respective circumferential reinforcement at positions spaced axially along the length of said hose.
References Cited (Backward Citations)
US1883086A
Cited
US3172428A
Cited
US3339415A
Cited
US3717180A
Cited
US3860043A
Cited
US3972223A
Cited
US4153079A
Cited
JPS54153320A
Cited
US4259553A
Cited
US4349049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |