Patent US3765557A successfully refreshed from Google Patents.
US3765557A
Expired / Lapsed
US
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Reinforced high pressure test vessel
Assignee: Individual
•
Filing: 1971-09-20
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Granted: 1973-10-16
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Expires: 1991-09-20
Abstract
Abstract Stress relief is provided in a high pressure test vessel by wrapping a pre-stressed, braided multifilament of interwoven fiber glass filaments coated externally with an epoxy resin about the pressure vessel to reduce the possibility of vessel fatigue failure under cyclic operation.
Inventors
- 👤 M Giwer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:10
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/60; B29C53/602; F; F17; F17C; F17C1/00; F17C1/02; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/05; F17C2201/056; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0614; F17C2203/0617; F17C2203/0634; F17C2203/0658; F17C2203/0663; F17C2203/067; F17C2203/0673; F17C2223/00; F17C2223/03; F17C2223/035; F17C2260/00; F17C2260/01; F17C2260/011; F17C2270/00; F17C2270/01; F17C2270/0142; F17C2270/0157; F17C2270/0163; F17C2270/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A reinforced high pressure test vessel which comprises: a hollow test vessel containing an access port; and a braided prestressed multifilament strand formed of interwoven glass filaments continuously wound around said vessel under tension to form continuous adjacent windings of said multifilament strand for reducing vessel fatigue due to cyclic stress acting on said vessel, said filaments being coated externally with an epoxy resin such that each filament is movably in frictional engagement with respect to each other filament of the multifilament stand.
Claim 2
Dependent Claim
83 words
A reinforced high pressure test vessel which comprises: a hollow test vessel containing an access port; and a braided prestressed multifilament strand formed of interwoven glass filaments continuously wound around said vessel under tension to form continuous adjacent windings of said multifilament strand for reducing vessel fatigue due to cyclic stress acting on said vessel, said filaments being coated externally with an epoxy resin such that each filament is movably in frictional engagement with respect to each other filament of the multifilament stand.
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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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |