Patent US3750978A successfully refreshed from Google Patents.
US3750978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skyboat
Assignee: Individual
•
Filing: 1971-08-25
•
Granted: 1973-08-07
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Expires: 1991-08-25
Abstract
Abstract A skyboat is provided which consists of an airplane-like structure having limited lift wings and a trailing ski which is ordinarily in contact with water. A high speed, efficient, safe craft for the transportation of people and cargo is thus provided.
Inventors
- 👤 B Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:34
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/18; B63B1/22; B60; B60V; B60V1/00; B60V1/22; B63B1/32; B63B1/322; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
167 words
An airplane-like craft or skyboat adapted for over water flights having in combination: a. a fuselage adapted to float on water and fly through the air, b. means for propelling said fuselage through the air, c. wings mounted on said skyboat, said wings being adapted to support said craft as it moves forward through the air, said wings being of relatively small size and having a to lift 4o prevent the skyboat from becoming completely airborne under normal conditions, d. a ski hingedly mounted on a stiff arm near the front of said fuselage and extending to the rear, said hinge permitting said ski to extend downwardly and rearwardly of the hinge point into contact with the water when said skyboat is airborne and to fold along the bottom of said fuselage when said craft is waterborne, e. locking means whereby said hinge can be locked in the down position, and f. spring means normally urging said ski downwardly whereby the ski tends to support the skyboat.
Claim 2
Dependent Claim
167 words
An airplane-like craft or skyboat adapted for over water flights having in combination: a. a fuselage adapted to float on water and fly through the air, b. means for propelling said fuselage through the air, c. wings mounted on said skyboat, said wings being adapted to support said craft as it moves forward through the air, said wings being of relatively small size and having a to lift 4o prevent the skyboat from becoming completely airborne under normal conditions, d. a ski hingedly mounted on a stiff arm near the front of said fuselage and extending to the rear, said hinge permitting said ski to extend downwardly and rearwardly of the hinge point into contact with the water when said skyboat is airborne and to fold along the bottom of said fuselage when said craft is waterborne, e. locking means whereby said hinge can be locked in the down position, and f. spring means normally urging said ski downwardly whereby the ski tends to support the skyboat.
Claim 3
Dependent Claim
16 words
The structure of claim 1 wherein the skyboat has an elevator mounted ahead of the wing.
References Cited (Backward Citations)
US2430793A
Cited
US2693325A
Cited
US2692096A
Cited
US3082975A
Cited
US3503574A
Cited
US3614024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |