US4458442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glider with adjustable wings
Assignee: Individual
•
Filing: 1983-04-11
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Granted: 1984-07-10
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Expires: 2003-04-11
Abstract
Abstract A hand launched glider of folded sheet material, having a basic fuselage with integral tail surfaces and a curved slot to hold a wing which is keyed to the fuselage to maintain alignment, the wing being adjustable fore and aft in the slot. The central fuselage and nose portion are reinforced by additional folded elements, one of the elements comprising a slidable locking member which secures the wing at any selected position in the slot. A spring clip on the nose secures the multiple elements in place, including the wing locking member, and also serves as ballast for balancing the glider. The wing and tail have adjustable control surfaces which, together with the wing position adjustment, provide a wide range of flight control.
Inventors
- 👤 Don W. McDaniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:40
CPC Classifications
A; A63; A63H; A63H27/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A hand launched glider, comprising: a wing of substantially flat sheet material; an elongated fuselage having a nose, a central portion and a tail portion, said central portion having a longitudinally extending, upwardly convexly curved wing receiving slot therein to hold the wing in a cambered configuration; said wing being longitudinally adjustable in said slot; a locking member on said fuselage for locking said wing at selected longitudinal positions in said slot, said locking member fitting coextensively on the fuselage and having a wing retaining slot in which the wing is a close longitudinal fit; retaining means on said fuselage for securing said locking member to the fuselage; and aerodynamic stabilizing surfaces extending from the fuselage in spaced relation to the wing.
Claim 2
Dependent Claim
122 words
A hand launched glider, comprising: a wing of substantially flat sheet material; an elongated fuselage having a nose, a central portion and a tail portion, said central portion having a longitudinally extending, upwardly convexly curved wing receiving slot therein to hold the wing in a cambered configuration; said wing being longitudinally adjustable in said slot; a locking member on said fuselage for locking said wing at selected longitudinal positions in said slot, said locking member fitting coextensively on the fuselage and having a wing retaining slot in which the wing is a close longitudinal fit; retaining means on said fuselage for securing said locking member to the fuselage; and aerodynamic stabilizing surfaces extending from the fuselage in spaced relation to the wing.
Claim 3
Dependent Claim
29 words
A hand launched glider according to claim 1, wherein the upper portions of said fuselage and locking member above the slots have longitudinal openings for insertion of the wing.
Claim 4
Dependent Claim
30 words
A hand launched glider according to claim 2, wherein said wing retaining slot has a vertical depth sufficient to clear the wing at all cambered positions in the fuselage slot.
Claim 5
Dependent Claim
43 words
A hand launched glider according to claim 3, wherein said locking member has a nose portion coextensive with the fuselage nose, said retaining means comprising a spring clip straddling and frictionally engaging the combined thicknesses of the fuselage and locking member nose portions.
Claim 6
Dependent Claim
37 words
A hand launched glider according to claim 4, wherein said locking member is mounted externally on the fuselage; and including an external nose reinforcing member fitted over said locking member nose portion and secured by said clip.
Claim 7
Dependent Claim
36 words
A hand launched glider according claim 4, wherein said fuselage is of sheet material folded longitudinally, said locking member being of sheet material folded longitudinally and straddling the nose and central portion of the fuselage externally.
Claim 8
Dependent Claim
35 words
A hand launched glider according to claim 6, wherein said wing has a leading edge and a trailing edge, said locking member engaging both the leading and trailing edges simultaneously within the wing retaining slot.
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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) | 1987-07-10 | 1988-01-09 | 1988-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-10 | 1992-01-09 | 1992-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-10 | 1996-01-09 | 1996-07-10 | $7700.00 | Window Closed / Lapsed |