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Patent US3208761A successfully refreshed from Google Patents.
US3208761A
Expired / Lapsed
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Metal ski with cellular plastic structure
Assignee: Individual
•
Filing: 1963-09-04
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Granted: 1965-09-28
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Expires: 1983-09-04
Abstract
No abstract record available.
Inventors
- 👤 George C Sullivan
- 👤 Robert S Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:03
CPC Classifications
A; A63; A63C; A63C5/00; A63C5/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A LIGHWEIGHT METAL SKI COMPRISING AN UPPER MEMBER PROVIDING AN UPPER SURFACE, A LOWER MEMBER PROVIDING A LOWER SURFACE, AT LEAST ONE OF SAID MEMBERS BEING A SUBSTANTIALLY U-SHAPED SECTION HAVING SPACED PARALLEL SIDE WALLS, SAID SIDE WALLS TAPERING IN ELEVATION FORWARDLY AND REARWARDLY FROM ABOUT THE MID-SECTION OF SAID SKI TO FORM A SUBSTANTIALLY RECTANGULAR CAVITY OF DECREASING CROSS-SECTION, AND MEANS TO JOIN SAID UPPER AND LOWER MEMBERS CONSISTING OF AN INNER CORE OF CELLULAR PLASTIC MATERIAL WHICH IS FOAMED IN SITU, AND ADHERES TO THE ADJACENT INNER SURFACES OF SAID MEMBERS TO PROVIDE A RIGID BOND THEREBETWEEN TO FORM A UNITARY STRUCTURE.
Claim 2
Dependent Claim
104 words
A LIGHWEIGHT METAL SKI COMPRISING AN UPPER MEMBER PROVIDING AN UPPER SURFACE, A LOWER MEMBER PROVIDING A LOWER SURFACE, AT LEAST ONE OF SAID MEMBERS BEING A SUBSTANTIALLY U-SHAPED SECTION HAVING SPACED PARALLEL SIDE WALLS, SAID SIDE WALLS TAPERING IN ELEVATION FORWARDLY AND REARWARDLY FROM ABOUT THE MID-SECTION OF SAID SKI TO FORM A SUBSTANTIALLY RECTANGULAR CAVITY OF DECREASING CROSS-SECTION, AND MEANS TO JOIN SAID UPPER AND LOWER MEMBERS CONSISTING OF AN INNER CORE OF CELLULAR PLASTIC MATERIAL WHICH IS FOAMED IN SITU, AND ADHERES TO THE ADJACENT INNER SURFACES OF SAID MEMBERS TO PROVIDE A RIGID BOND THEREBETWEEN TO FORM A UNITARY STRUCTURE.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |