US4005673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air propulsion device for surface craft
Assignee: Lawrence Peska Associates Inc
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Filing: 1976-03-10
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Granted: 1977-02-01
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Expires: 1996-03-10
Abstract
Abstract This disclosure pertains to an air propulsion device for surface craft having a lateral platform designed to clampingly engage the gunwales of a craft and a clamp to removably attach the platform to the sternmost outboard motor mounting board. A propulsion motor mounting plate is pivotably secured to the lateral platform and is adapted with a pivot handle. The air propulsion motor is mounted atop the motor mounting plate within a triangular shaped supporting structure having, at its apex, a bearing assembly which supports the blade shaft. The entire unit can be assembled onto most small boat shapes when in the water or on land, and can be removed therefrom for repairs or to convert the boat to a conventional outboard driven craft when desired. The entire unit is self contained and the mounting devices employed thereon do not require any permanent modifications to the boat upon which it is to be mounted and operated.
Inventors
- 👤 Alfred V. Carrero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:45
CPC Classifications
B; B63; B63H; B63H7/00; B63H7/02; B60; B60F; B60F3/00; B60F3/0007; F; F02; F02B; F02B61/00; F02B61/04; F02B61/045
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
150 words
An air propulsion device for surface craft comprising a lateral craft engaging platform having gunwale engaging means to removably engage opposing outboard gunwale sides of a craft and bulkhead engaging means to removably engage a bulkhead athwart said gunwales at a point astern of said gunwale engaging means, a pivot point having a pivot axis normal to said lateral craft engaging platform located substantially centered between said gunwales and forward of said bulkhead, a lateral propulsion device mounting platform pivotably secured to said lateral craft engaging platform normal to said pivot axis, means to rotate said lateral propulsion device mounting platform about said pivot axis, engine means adapted to mount to said lateral propulsion device mounting platform, said engine means rotatably adapted to drive a horizontal shaft whose longitudinal axis is substantially parallel to said lateral propulsion device mounting platform and having an air propulsion blade extending radially outwardly therefrom.
Claim 2
Dependent Claim
150 words
An air propulsion device for surface craft comprising a lateral craft engaging platform having gunwale engaging means to removably engage opposing outboard gunwale sides of a craft and bulkhead engaging means to removably engage a bulkhead athwart said gunwales at a point astern of said gunwale engaging means, a pivot point having a pivot axis normal to said lateral craft engaging platform located substantially centered between said gunwales and forward of said bulkhead, a lateral propulsion device mounting platform pivotably secured to said lateral craft engaging platform normal to said pivot axis, means to rotate said lateral propulsion device mounting platform about said pivot axis, engine means adapted to mount to said lateral propulsion device mounting platform, said engine means rotatably adapted to drive a horizontal shaft whose longitudinal axis is substantially parallel to said lateral propulsion device mounting platform and having an air propulsion blade extending radially outwardly therefrom.
Claim 3
Dependent Claim
72 words
The air propulsion device for surface craft as claimed in claim 1 wherein said gunwale engaging means comprises two lateral surfaces with downward turned edges adapted to engage said gunwales on the outboard edges thereof, means to dispose said two lateral surfaces along a line substantially transverse to the longitudinal axis of said gunwales, means to adjustably fixedly secure said two lateral surfaces to said lateral craft engaging platform along said line.
Claim 4
Dependent Claim
70 words
The air propulsion device for surface craft as claimed in claim 1 wherein said engine means comprises a belt coupled to the surface of an outboard shaft of an engine having an axis parallel to said lateral craft engaging platform, said belt adapted to engage the surface of said horizontal shaft and further adapted to have an idler wheel adjustably induce tension forces along a portion of the length thereof.
Claim 5
Dependent Claim
49 words
The air propulsion device for surface craft as claimed in claim 1 further comprising means to apply manually adjustable friction forces between said lateral craft engaging platform and said lateral propulsion device mounting platform frictionally opposing the rotation of said lateral propulsion device mounting platform about said pivot axis.
Claim 6
Dependent Claim
47 words
The air propulsion device for surface craft as claimed in claim 1 wherein said means to rotate said lateral propulsion device mounting platform about said pivot axis comprises a longitudinal handle fixedly secured thereto extending forward from a forwardmost edge of said lateral propulsion device mounting platform.
Claim 7
Dependent Claim
71 words
The air propulsion device for surface craft as claimed in claim 1 wherein said horizontal shaft is rotatably secured to a triangularly shaped supporting structure adapted to have the lowermost edge thereof parallel to said lateral propulsion device mounting platform and the apex thereof located above said lateral propulsion device mounting platform, said engine means substantially located within said triangularly shaped supporting structure mounted at a point below said horizontal shaft.
Claim 8
Dependent Claim
98 words
The air propulsion device for surface craft as claimed in claim 1 wherein said bulkhead engaging means comprises the application of pincer-like forces on opposite surfaces of said bulkhead applied by at least one pair of opposed clamping surfaces, one of said pair of clamping surfaces fixedly secured substantially normal to said lateral craft engaging platform, the other of said pair of clamping surfaces manually adjustably disposed parallel to said one of said pair of clamping surfaces a distance controlled by manually rotating a threaded rod having a longitudinal axis substantially perpendicular to said pair of clamping surfaces.
Claim 9
Dependent Claim
21 words
The air propulsion device for surface craft as claimed in claim 1 wherein said bulkhead is the transom of said craft.
References Cited (Backward Citations)
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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) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |