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US3860204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-stiffened flexible kite
Assignee: Individual
•
Filing: 1973-05-11
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Granted: 1975-01-14
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Expires: 1993-05-11
Abstract
Abstract There is disclosed for the purpose of longitudinally bracing and stiffening a flexible kite of the type known as an ''''Allison Sled'''', rear-standing flanges substantially perpendicular to and integral with the lines of contiguity between a central air-foil panel and the tether panels laterally associated therewith.
Inventors
- 👤 David M Checkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:25
CPC Classifications
A; A63; A63H; A63H27/00; A63H27/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
159 words
In a kite of the type wherein an air-foil panel providing a leading edge and a trailing edge, includes a tether panel oustanding contiguous to each side edge of said air-foil panel between said leading and trailing edges and there is a means for bracing said air-foil panel against longitudinal flexure, and said tether panels by tether lines are joined to a flight line, the improvement, wherein: said means for longitudinally bracing said air-foil panel comprises a flange normally weak under longitudinally applied compressive forces rear-standing substantially perpendicular to each line of contiguity and extending the full length of said air-foil panel and the tether panels associated therewith, said flange being uninterrupted throughout its full length and width, and said flanges, during flight of said kite, being stiffened by tensile forces applied thereto at the lines of contiguity by the air distendair-foil panel and tether panels, and said flanges stiffening said panels against bowing along the lines of contiguity.
Claim 2
Dependent Claim
159 words
In a kite of the type wherein an air-foil panel providing a leading edge and a trailing edge, includes a tether panel oustanding contiguous to each side edge of said air-foil panel between said leading and trailing edges and there is a means for bracing said air-foil panel against longitudinal flexure, and said tether panels by tether lines are joined to a flight line, the improvement, wherein: said means for longitudinally bracing said air-foil panel comprises a flange normally weak under longitudinally applied compressive forces rear-standing substantially perpendicular to each line of contiguity and extending the full length of said air-foil panel and the tether panels associated therewith, said flange being uninterrupted throughout its full length and width, and said flanges, during flight of said kite, being stiffened by tensile forces applied thereto at the lines of contiguity by the air distendair-foil panel and tether panels, and said flanges stiffening said panels against bowing along the lines of contiguity.
Claim 3
Dependent Claim
42 words
The kite structure of claim 1 in which each flange is formed of a side marginal portion of the air-foil panel and a side marginal portion of an associated tether panel, said marginal portions being juxtaposed and secured together against relative movement.
Claim 4
Dependent Claim
18 words
The kite structure of claim 2 in which said juxtaposed marginal portions are secured together by adhesive means.
Claim 5
Dependent Claim
21 words
The kite structure of claim 3 in which the adhesive means comprises an adhesive layer interposed between said juxtaposed marginal portions.
Claim 6
Dependent Claim
21 words
The kite structure of claim 3 in which the adhesive means comprises a tape spanning edges of said juxtaposed marginal portions.
Claim 7
Dependent Claim
29 words
The kite structure of claim 2 in which the air-foil and the associated tether panels are formed of a single piece of sheet material folded to form said flanges.
Claim 8
Dependent Claim
33 words
The kite structure of claim 6 in which the sheet material is selected from the group consisting of paper, plastic or fabric having stiffness substantially equivalent to 25 lb. M.G. Kraft or greater.
Claim 9
Dependent Claim
25 words
The kite structure of claim 6 in which each flange includes longitudinally stiffening means interposed between said marginal portions normal to the lines of contiguity.
Claim 10
Dependent Claim
19 words
The kite structure of claim 8 in which each said stiffening means comprises a strip of stiff sheet material.
Claim 11
Dependent Claim
30 words
The kite structure of claim 8 in which there is a strip of tape spanning the length of each line of contiguity at the side margin of the air-foil panel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |