US3335757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced composite wall tube
Assignee: Clevite Corp
•
Filing: 1964-07-10
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Granted: 1967-08-15
•
Expires: 1984-07-10
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:50
CPC Classifications
F; F42; F42B; F42B19/00; F42B19/005; F16; F16L; F16L9/00; F16L9/12; F16L9/127; F16L9/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A STRUCTURAL MEMBER, COMPRISING: A SUBSTANTIALLY RIGID AND HOLLOW CYLINDER FORMED OF A CONTIGUOUSLY DISPOSED ROW OF ONE OR MORE COILS OF TUBULAR MEMBERS; A LAYER OF FIBROUS REINFORCEMENT MATERIAL SURROUNDING THE OUTER AND INNER SURFACE OF SAID CYLINDER; AND A MATRIX OF RESINOUS MATERIAL EMBEDDING SAID LAYER OF FIBROUS REINFORCEMENT MATERIAL AND SAID CYLINDER TO FORM A UNITARY SOLID AND RIGID MEMBER.
Claim 2
Dependent Claim
63 words
A STRUCTURAL MEMBER, COMPRISING: A SUBSTANTIALLY RIGID AND HOLLOW CYLINDER FORMED OF A CONTIGUOUSLY DISPOSED ROW OF ONE OR MORE COILS OF TUBULAR MEMBERS; A LAYER OF FIBROUS REINFORCEMENT MATERIAL SURROUNDING THE OUTER AND INNER SURFACE OF SAID CYLINDER; AND A MATRIX OF RESINOUS MATERIAL EMBEDDING SAID LAYER OF FIBROUS REINFORCEMENT MATERIAL AND SAID CYLINDER TO FORM A UNITARY SOLID AND RIGID MEMBER.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |