Patent US3608512A successfully refreshed from Google Patents.
US3608512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aquaplane
Assignee: Individual
•
Filing: 1970-01-26
•
Granted: 1971-09-28
•
Expires: 1990-01-26
Abstract
Abstract A flat-bottomed and buoyant hull has an upwardly open, longitudinally extending compartment open rearwardly at its stern, for accommodating a rider in standing position, and is provided with a pair of elongate, longitudinally extending fins of narrow, single formation laterally of and depending from the flat bottom. Each fin has its outer surface normal to the flat bottom of the hull and its inside surface merging arcuately into the flat bottom. The flat bottom is also preferably provided with longitudinally extending grooves intermediate the fins. Propulsion means is placed directly below the open rear end of the compartment between the fins, and a throttle-provided, flexible hand-hold extends toward the compartment from a forward anchorage to the hull, preferably at opposite lateral sides thereof.
Inventors
- 👤 James A Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:47
CPC Classifications
B; B63; B63B; B63B34/00; B63B34/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
176 words
In an aquaplane, having a buoyant flat-bottomed hull with walls providing an upwardly open, longitudInally extending compartment open rearwardly at the stern of the hull for accommodating a rider, elongate and longitudinally extending runners depending from the flat bottom laterally of the compartment and terminating at the stern, powered propulsion means, and control means for the propulsion means, the improvement which enables a rider to stand erect in the compartment while operating the aquaplane in the manner of water skiis, comprising rigid interconnection of all walls so the hull is a rigid unit; the propulsion means being at the stern between the runners and directly below the rearward opening of the compartment; each of the runners being in the form of a single, narrow fin having its outer face substantially normal to the flat bottom of the hull and having its inner face merging arcuately into said flat bottom; and the control means being a flexible handhold extending toward said compartment from secure anchorage forwardly on the hull and including control means for said propulsion means.
Claim 2
Dependent Claim
176 words
In an aquaplane, having a buoyant flat-bottomed hull with walls providing an upwardly open, longitudInally extending compartment open rearwardly at the stern of the hull for accommodating a rider, elongate and longitudinally extending runners depending from the flat bottom laterally of the compartment and terminating at the stern, powered propulsion means, and control means for the propulsion means, the improvement which enables a rider to stand erect in the compartment while operating the aquaplane in the manner of water skiis, comprising rigid interconnection of all walls so the hull is a rigid unit; the propulsion means being at the stern between the runners and directly below the rearward opening of the compartment; each of the runners being in the form of a single, narrow fin having its outer face substantially normal to the flat bottom of the hull and having its inner face merging arcuately into said flat bottom; and the control means being a flexible handhold extending toward said compartment from secure anchorage forwardly on the hull and including control means for said propulsion means.
Claim 3
Dependent Claim
23 words
The improved aquaplane of claim 1, wherein elongate, longitudinally extending grooves are provided in the flat bottom of the hull between the fins.
Claim 4
Dependent Claim
24 words
The improved aquaplane of claim 2, wherein elongate, longitudinally extending, stub fins are provided on the flat bottom of the hull between the grooves.
Claim 5
Dependent Claim
35 words
The improved aquaplane of claim 1, wherein an internal combustion engine is mounted forwardly in the hull for powering the propulsion means; said engine having a connection with the control means of the flexible handhold.
Claim 6
Dependent Claim
46 words
The improved aquaplane of claim 4, wherein the propulsion means is a shrouded propeller; a relatively short axial fin extends forwardly from the propeller shroud; and an elongate drive shaft extends from the engine, supported by a bearing in said axial fin, to power said propeller.
Claim 7
Dependent Claim
28 words
The improved aquaplane of claim 1, wherein the hull is formed of mated top and bottom shells of heat-formed thermoplastic sheets and is filled with a foamed plastic.
References Cited (Backward Citations)
US3091206A
Cited
US3433201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |