US3614032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft
Assignee: Individual
•
Filing: 1969-04-28
•
Granted: 1971-10-19
•
Expires: 1989-04-28
Abstract
Abstract In abstract, a preferred embodiment of this invention is an aircraft design capable of being built by amateurs in stages as time and money become available while at the same time being readily adaptable for assembly line production. This aircraft uses a new concept of designing the upper portion of the fuselage to conform to the shape of the plane formed at the junction of two intersecting cylinders disposed angularly to each other. This fuselage shape in combination with a minimum flotation system gives an extremely stable aircraft on both water, land and in the air which has a tremendous load carrying capacity for the size power plant required.
Inventors
- 👤 Thomas H Purcell Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:35
CPC Classifications
B; B64; B64C; B64C31/00; B64C31/028
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
121 words
An aircraft comprising: a ridged hull having an airfoil shaped vertical longitudinal cross section generally equal to the curvature and shape of the plane of intersection of two angularly disposed cylinders; wing-type lift surfaces operatively attached to said hull and formed from reinforced flexible material attached along a substantial portion of the upper surface of the airfoil-shaped hull and disposed laterally therefrom to lie in a portion of the surfaces generated by the two intersecting cylinders, said flexible wings being foldable from extended flight position to a folded position adjacent the side of said hull; and vertical and horizontal stabilizing means operatively connected to said hull whereby a high aspect ratio aircraft is provided having both flexible and rigid airfoil surfaces.
Claim 2
Dependent Claim
121 words
An aircraft comprising: a ridged hull having an airfoil shaped vertical longitudinal cross section generally equal to the curvature and shape of the plane of intersection of two angularly disposed cylinders; wing-type lift surfaces operatively attached to said hull and formed from reinforced flexible material attached along a substantial portion of the upper surface of the airfoil-shaped hull and disposed laterally therefrom to lie in a portion of the surfaces generated by the two intersecting cylinders, said flexible wings being foldable from extended flight position to a folded position adjacent the side of said hull; and vertical and horizontal stabilizing means operatively connected to said hull whereby a high aspect ratio aircraft is provided having both flexible and rigid airfoil surfaces.
Claim 3
Dependent Claim
16 words
The aircraft of claim 1 wherein the intersecting cylinders are generally circular in lateral cross section.
Claim 4
Dependent Claim
16 words
The aircraft of claim 1 wherein the intersecting cylinders are generally elliptical in lateral cross section.
Claim 5
Dependent Claim
52 words
The aircraft of claim 1 including roll-controlling ailerons pivotably mounted along their leading edges adjacent the tips of the wings and normally lying juxtaposed to said wings; and means for selectively raising one aileron at the time whereby roll may be controlled by raising the aileron in the desired direction of control.
Claim 6
Dependent Claim
56 words
The aircraft of claim 1 including a pair of float means secured to said hull; each of said floats having a dead rise of at least 90* from keel line to exterior side and a dead rise of generally less than 45* from keel line to interior side whereby an extremely stable floatation means is provided.
Claim 7
Dependent Claim
34 words
The aircraft of claim 5 wherein skis are attached along at least a portion of the keel line of each of the floats whereby said aircraft may be landed, selectively, on water or snow.
Claim 8
Dependent Claim
11 words
The aircraft of claim 5 wherein the floats are removably mounted.
Claim 9
Dependent Claim
47 words
The aircraft of claim 1 wherein a pair of floats are secured to said hull; at least one retractable water planing flap is operatively mounted to the lower portion of said hull between said floats whereby a planing condition of said floats may more rapidly be obtained.
Claim 10
Independent Claim
111 words
The method of constructing a nonfactory built aircraft comprising the steps of forming an airfoil shaped huLl frame having a vertical longitudinal cross section generally equal in curvature and shape to the plane of intersection of two angularly disposed cylinders with a pair of laterally disposed flexible type wings connected thereto along a substantial distance of its upper surface and lying in a portion of the surfaces generated by said cylinders whereby a first stage glider-type aircraft is provided; covering said hull frame with an aircraft-type skin whereby an enclosed glider-type aircraft is provided; and operatively mounting an engine to said enclosed hull whereby a third stage self-propelled aircraft is provided.
Claim 11
Independent Claim
111 words
The method of constructing a nonfactory built aircraft comprising the steps of forming an airfoil shaped huLl frame having a vertical longitudinal cross section generally equal in curvature and shape to the plane of intersection of two angularly disposed cylinders with a pair of laterally disposed flexible type wings connected thereto along a substantial distance of its upper surface and lying in a portion of the surfaces generated by said cylinders whereby a first stage glider-type aircraft is provided; covering said hull frame with an aircraft-type skin whereby an enclosed glider-type aircraft is provided; and operatively mounting an engine to said enclosed hull whereby a third stage self-propelled aircraft is provided.
Claim 12
Dependent Claim
21 words
The method of claim 9 including substituting rigid-type wings for said flexible-type wings whereby a fourth stage high-speed aircraft is provided.
References Cited (Backward Citations)
US1192248A
Cited
US1727047A
Cited
US1874469A
Cited
US1998487A
Cited
US2141534A
Cited
US2174542A
Cited
US2288829A
Cited
US2347841A
Cited
US2354569A
Cited
US2402118A
Cited
US2402468A
Cited
US2720367A
Cited
US2842325A
Cited
US3128065A
Cited
US3249327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |