US3604031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrofoil board
Assignee: Individual
•
Filing: 1969-02-25
•
Granted: 1971-09-14
•
Expires: 1989-02-25
Abstract
Abstract A generally flat generally horizontal platform is provided with a plurality of generally downwardly extending struts secured at upper ends to the bottom surface of the platform and at bottom ends to corresponding inclined foils. The apparatus is adapted to be towed in water behind a motor boat and to be ridden in the same manner as water skis and the like. In use the platform rises vertically out of the water to a height determined by the length of the struts.
Inventors
- 👤 Michael J Cahill
- 👤 Ernest G La Casse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:24
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B32/00; B63B32/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
168 words
A hydrofoil board comprising: a generally horizontal platform having a front and a rear; a pair of spaced-apart struts extending generally downward from the bottom surface of the platform adjacent the front, said struts extending inclinedly downward and outward from each other; an additional strut spaced from said pair and extending vertically downward from the bottom surface of the platform adjacent the rear; three hydrofoils, each hydrofoil being secured to the bottom end of the corresponding strut; first and second ones of said hydrofoils being attached to respective ones of said pair of spaced struts each having a normally substantially horizontal portion extending inwardly toward the other from its respective strut and joined with a portion extending upward toward said platform away from each other from its respective strut; the third of said hydrofoils extending rearwardly inclinedly downward from said additional strut; and towing means comprising a Y-shaped cable with each respective branch thereof attached to respective ones of said pair of spaced apart struts below said platform.
Claim 2
Dependent Claim
168 words
A hydrofoil board comprising: a generally horizontal platform having a front and a rear; a pair of spaced-apart struts extending generally downward from the bottom surface of the platform adjacent the front, said struts extending inclinedly downward and outward from each other; an additional strut spaced from said pair and extending vertically downward from the bottom surface of the platform adjacent the rear; three hydrofoils, each hydrofoil being secured to the bottom end of the corresponding strut; first and second ones of said hydrofoils being attached to respective ones of said pair of spaced struts each having a normally substantially horizontal portion extending inwardly toward the other from its respective strut and joined with a portion extending upward toward said platform away from each other from its respective strut; the third of said hydrofoils extending rearwardly inclinedly downward from said additional strut; and towing means comprising a Y-shaped cable with each respective branch thereof attached to respective ones of said pair of spaced apart struts below said platform.
Claim 3
Dependent Claim
20 words
A board as set forth in claim 1, wherein each strut is provided with means for varying the length thereof.
Claim 4
Dependent Claim
18 words
A board as set forth in claim 2 wherein said platform has the shape of a Manta Ray.
Claim 5
Dependent Claim
33 words
A hydrofoil board in accordance with claim 1 and further comprising rider support means secured to the front of said platform extending upward therefrom for providing support for a rider on said board.
References Cited (Backward Citations)
DE888515C
Cited
US2910708A
Cited
US2936466A
Cited
US2815518A
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US2930338A
Cited
US3082443A
Cited
US3121890A
Cited
US3105249A
Cited
US3182341A
Cited
US3164119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |