US3640491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airplane construction frame
Assignee: Individual
•
Filing: 1970-04-15
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Granted: 1972-02-08
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Expires: 1990-04-15
Abstract
Abstract A prefabricated, unitary frame and a body formed in prefabricated sections, the frame having body sections receiving and supporting members, and the body sections being formed of lightweight and strong alloys, or synthetics, and being provided with complementary engaging means for quick and easy securement of said body sections to said supporting members.
Inventors
- 👤 Robert R Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:06
CPC Classifications
B; B64; B64C; B64C1/00; B64C2211/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
148 words
A prefabricated airplane including: a hollow, elongated, main stem having a front end and a tail end, a disc attached to the front end of said stem with the interacting faces of said disc and said stem disposed at a right angle relative to the axis of said stem, horizontally extending wing-supporting means carried by said stem intermediate its ends, a vertically disposed rudder support means at the tail end of said stem, said stem also carrying horizontal tailpiece-supporting means at the tail end thereof, a prefabricated nosepiece consisting of complementary truncated conical segments clamped to said stem immediately to the rear of said disc, a cabin formed of complementary segments clamped to said stem, wings secured to said wing-supporting means, and extending horizontally from said stem, a rudder attached to said rudder support means, and a tail section attached to said stem at the tail end thereof.
Claim 2
Dependent Claim
148 words
A prefabricated airplane including: a hollow, elongated, main stem having a front end and a tail end, a disc attached to the front end of said stem with the interacting faces of said disc and said stem disposed at a right angle relative to the axis of said stem, horizontally extending wing-supporting means carried by said stem intermediate its ends, a vertically disposed rudder support means at the tail end of said stem, said stem also carrying horizontal tailpiece-supporting means at the tail end thereof, a prefabricated nosepiece consisting of complementary truncated conical segments clamped to said stem immediately to the rear of said disc, a cabin formed of complementary segments clamped to said stem, wings secured to said wing-supporting means, and extending horizontally from said stem, a rudder attached to said rudder support means, and a tail section attached to said stem at the tail end thereof.
Claim 3
Dependent Claim
34 words
The structure of claim 1 wherein said stem is provided with horizontal and vertical rods, and said nosepieces, said cabin pieces, and said tailpieces, are provided with rod-engaging means for attachment to said stem.
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |