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US4049287A Expired / Lapsed US ⏱️ 0.0 years remaining

Sail vehicles

Assignee: Individual
•
Filing: 1976-04-06
•
Granted: 1977-09-20
•
Expires: 1996-04-06
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Abstract

Abstract A wind-propelled sail vehicle comprises a perimeter frame, a mast and a chassis with three support members such as wheels, pads or skis. Two support members of fixed orientation are situated forward, the third support member, for steering, is situated aft and the mast is placed substantially vertically over the forward support members. The mast is positively mounted in the head of a rigid tripod and fixed with respect to the middle of the front cross-beam of the chassis. One foot of the tripod is mounted to the frame and the other feet to the lateral portions of the frame. The laterally mounted feet at their juncture with the frame form the axles upon which the wheels, pads or skis are mounted. This construction greatly increases manoeuvrability while reducing the overall weight of the apparatus for a given sail surface.

Inventors

  • 👤 Jean-Paul Dudouyt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 07:06
CPC Classifications
B; B62; B62B; B62B15/00; B62B15/001; B62B15/004

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 121 words
A wind propelled sail vehicle comprising a frame, said frame arranged to support therewithin a pair of rotatable front wheels and a pair of rotatable rear wheels arranged for steering said sailing apparatus, a tripartite body having a forwardly extending portion and oppositely downwardly extending portions which are connected to the front wheels, said tripartite body further including a head which comprises a sleeve portion serving to support a mast for a sail, a seat positioned rearwardly of said mast, and steering means for said rear wheels arranged to be moved from an inoperative position so that a rider may enter or leave said seat to an operative position for steering said sailing apparatus when the rider is in the seat.
Claim 2
Dependent Claim 121 words
A wind propelled sail vehicle comprising a frame, said frame arranged to support therewithin a pair of rotatable front wheels and a pair of rotatable rear wheels arranged for steering said sailing apparatus, a tripartite body having a forwardly extending portion and oppositely downwardly extending portions which are connected to the front wheels, said tripartite body further including a head which comprises a sleeve portion serving to support a mast for a sail, a seat positioned rearwardly of said mast, and steering means for said rear wheels arranged to be moved from an inoperative position so that a rider may enter or leave said seat to an operative position for steering said sailing apparatus when the rider is in the seat.
Claim 3
Dependent Claim 21 words
A wind propelled sail vehicle as claimed in claim 1, said rear wheels being mounted on a downwardly curved support bar.
Claim 4
Dependent Claim 39 words
A wind propelled sail vehicle as claimed in claim 1, in which said seat is supported on transversely extending members, the opposite ends of which are associated with a pair of spaced longerons which extend longitudinally of said frame.
Claim 5
Dependent Claim 32 words
A wind propelled sail vehicle as claimed in claim 1, in which said longerons include rearward portions that terminate in a transverse cross member that forms a support for the rear wheels.
Claim 6
Dependent Claim 25 words
A wind propelled sail vehicle as claimed in claim 1, in which said mast has a foot portion that is associated with a cross member.
Claim 7
Dependent Claim 21 words
A wind propelled sail vehicle as claimed in claim 1, in which said seat is longitudinally adjustable relative to said frame.

References Cited (Backward Citations)

US2238464A Cited
US2351542A Cited
FR1175929A Cited
US3395664A Cited
US3572740A Cited
US3831539A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-09-19 1981-03-21 1981-09-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-09-19 1985-03-21 1985-09-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-09-19 1989-03-21 1989-09-20 $7700.00 Window Closed / Lapsed

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