US3613622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tiltable hydrofoil arrangement
Assignee: Supramar AG
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Filing: 1970-03-16
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Granted: 1971-10-19
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Expires: 1990-03-16
Abstract
Abstract A tilting arrangement is disclosed for watercraft having a pair of hydrofoils mounted on opposite sides of the hull by means of struts. Such tilting arrangement allows the hydrofoils to be lifted into a position adjacent the deck of the hull or the superstructure of the watercraft. The tilting arrangement comprises for each of the hydrofoils a tilt bearing, the axis of which is angled relative to the centerline of the associated strut. Additionally, each hydrofoil may be pivotally connected to the lower end of the strut. By such pivotal connection, the hydrofoil may be rotated into a position adjacent the strut when the latter is tilted into its elevated position.
Inventors
- 👤 Karl Bueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:23
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/16; B63B1/24; B63B1/28; B63B1/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
A tiltable hydrofoil arrangement on watercraft having a hull comprising at least one pair of hydrofoils, one hydrofoil of each said at least one pair being mounted on opposite sides of the hull, each hyDrofoil being connected to the hull through h a strut mounted at its upper end to the hull by means of a tilt bearing, the axis of a said tilt bearing being angled relative to the centerline of the strut such that acute angle between said axis and said centerline is in the range from 30* to 70* and being disposed in a vertical plane which is essentially parallel to the longitudinal axis of the hull.
Claim 2
Dependent Claim
110 words
A tiltable hydrofoil arrangement on watercraft having a hull comprising at least one pair of hydrofoils, one hydrofoil of each said at least one pair being mounted on opposite sides of the hull, each hyDrofoil being connected to the hull through h a strut mounted at its upper end to the hull by means of a tilt bearing, the axis of a said tilt bearing being angled relative to the centerline of the strut such that acute angle between said axis and said centerline is in the range from 30* to 70* and being disposed in a vertical plane which is essentially parallel to the longitudinal axis of the hull.
Claim 3
Dependent Claim
53 words
The hydrofoil arrangement according to claim 1, wherein the angle between the axis of the tilt bearing and the centerline of the associated strut is chosen such that, with the hydrofoil in its uppermost position, the hydrofoil possesses a small spacing relative to the deck of the hull or superstructure of the watercraft.
Claim 4
Dependent Claim
29 words
The hydrofoil arrangement according to claim 1, wherein a motor is provided at the outer end of each tilt bearing for tilting the associated strut into the elevated position.
Claim 5
Dependent Claim
40 words
The hydrofoil arrangement according to claim 1, wherein each hydrofoil is pivotally connected to the lower end of its associated strut so as to be pivotable about an axis which is substantially parallel to the longitudinal axis of the hull.
Claim 6
Dependent Claim
45 words
The hydrofoil arrangement according to claim 2, wherein each hydrofoil and its associated strut are additionally connected by foldable fin means comprised of two portions connected to each other by a middle joint and to the hydrofoil and fin, respectively, by means of outer joints.
Claim 7
Dependent Claim
43 words
They hydrofoil arrangement according to claim 1, wherein each tilt bearing is mounted on a member transverse to the longitudinal axis of the hull, each said tilt bearing being rotatable about a transverse axis for changing the angle of attack of the hydrofoils.
References Cited (Backward Citations)
US3099239A
Cited
US3361103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |