US2857932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite high strength tubular structure
Assignee: Westinghouse Electric Corp
•
Filing: 1955-07-20
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Granted: 1958-10-28
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Expires: 1975-07-20
Abstract
No abstract record available.
Inventors
- 👤 Robert H Calderwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:48
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/02; B29C70/021; B29C70/025; B29C53/00; B29C53/80; B29C53/82; B29C53/821; B29C53/824; B29C70/026; B29K; B29K2001/00; B29K2035/00; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/10; B29K2105/101; B29K2105/16; B29K2309/00; B29K2309/08; B29L; B29L2031/00; B29L2031/709; B29L2031/7096
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A COMPOSITE HIGH STRENGTH TUBULAR MEMBER COMPRISING, IN COMBINATION, A TUBULAR BODY COMPROSING CELLULOSIC SHEET MATERIAL IMPREGNATED AND BONDED WITH A RESIN BINDER, SAID TUBULAR BODY BEING OF RELATIVELY LOW STRENGTH, AND AT LEAST ONE ENCIRCLING BAND MEMBER APPLIED TO AND BONDED TO THE TUBULAR BODY, SAID BAND MEMBER COMPRISING A LAYER OF A PLURALITY OF PLIES OF GALSS FIBER ROVING AND A THERMOSET RESIN COMPOSITION IMPREGNATING AND UNITING THE PLIES OF ROVING INTO A HIGH STRENGTH BAND MEM-
Claim 2
Dependent Claim
79 words
A COMPOSITE HIGH STRENGTH TUBULAR MEMBER COMPRISING, IN COMBINATION, A TUBULAR BODY COMPROSING CELLULOSIC SHEET MATERIAL IMPREGNATED AND BONDED WITH A RESIN BINDER, SAID TUBULAR BODY BEING OF RELATIVELY LOW STRENGTH, AND AT LEAST ONE ENCIRCLING BAND MEMBER APPLIED TO AND BONDED TO THE TUBULAR BODY, SAID BAND MEMBER COMPRISING A LAYER OF A PLURALITY OF PLIES OF GALSS FIBER ROVING AND A THERMOSET RESIN COMPOSITION IMPREGNATING AND UNITING THE PLIES OF ROVING INTO A HIGH STRENGTH BAND MEM-
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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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |