US3790112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kites
Assignee: Individual
•
Filing: 1971-11-11
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Granted: 1974-02-05
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Expires: 1991-11-11
Abstract
Abstract A kite uses wooden sticks having a figure-8 cross section made of two round sectioned sticks glued together side by side, producing freedom from stick breakage and uniformity of stick bending deflection, using materials available commercially in large quantities. The construction applies most advantageously to kites having strongly bent sticks and to kites of high aspect ratio and especially to kites as taught in U.S. Pat. No. 3,335,984.
Inventors
- 👤 R Holland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:20
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
50 words
A kite comprising a lifting surface, a longitudinally positioned stick supporting said lifting surface, and a generally triangular keel beneath said kite, said keel being attached to said kite by said stick threaded through holes along the upper edge of said keel and through matching holes in said lifting surface.
Claim 2
Dependent Claim
50 words
A kite comprising a lifting surface, a longitudinally positioned stick supporting said lifting surface, and a generally triangular keel beneath said kite, said keel being attached to said kite by said stick threaded through holes along the upper edge of said keel and through matching holes in said lifting surface.
Claim 3
Dependent Claim
40 words
In the kite of claim 1, said holes along the upper edge of said keel being arranged along a curved line, to distribute tension in said keel member and to distribute bending in said longitudinally positioned stick member, as described.
References Cited (Backward Citations)
US648544A
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US1021278A
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US1346956A
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FR561856A
Cited
US1892985A
Cited
US2238427A
Cited
US2442417A
Cited
US2785870A
Cited
US3055622A
Cited
FR1408652A
Cited
US3335984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |