Patent US4418631A successfully refreshed from Google Patents.
US4418631A
Expired / Lapsed
US
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Apparatus for controlling a wind propelled sailing device
Assignee: Individual
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Filing: 1981-10-26
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Granted: 1983-12-06
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Expires: 2001-10-26
Abstract
Abstract A wind propelled sailing device, such as a wind surfer, having a hull and a mast pivotally attached thereto with a substantially lateral boom extending from the mast and a sail for receiving wind is controlled in an improved manner through an apparatus that aids a sailor in counterbalancing the force generated by the wind. The apparatus includes a substantially rigid control member preferably including a pair of spaced-apart rigid rods pivotally connected at one end to the boom in an angular direction and rigidly connected to each other at a second end with a handle member. A connecting mechanism connects the rigid rods to the boom in an angular direction while preventing movement of the control member along the boom's axis. The apparatus allows the sailor to increase his counterbalancing force by allowing the sailor to lean further into the wind while minimizing reduction in effective sail area.
Inventors
- 👤 Louis A. Frohbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:00
CPC Classifications
B; B63; B63H; B63H8/00; B63H8/50; B63H8/54
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
212 words
An apparatus for aiding a sailer in controlling a wind propelled sailing device, the wind propelled sailing device including a water engaging hull means and a sail means having a sail for receiving wind for motive power pivotally attached to the hull means and universally pivotable with respect to the hull means and having a substantially lateral boom for controlling the sail means, the boom being positioned about a lower end of the sail and along both sides of the sail, the apparatus comprising: a substantially rigid U-shaped control member for transmitting forces from the sailer to the boom to control the steering of the sailing device, the control member having a pair of spaced-apart legs with spaced-apart first ends and having a handle portion extending between second ends of the legs, the handle portion being of sufficient length to permit grasping thereof by a pair of hands of the sailer so that the sailer can apply forces to the control member; and connecting means for pivotally connecting the spaced-apart first ends of the spaced-apart legs to the boom to permit pivotal movement of the control member about an axis of the boom and to transmit forces perpendicularly to the axis from the handle portion through the spaced-apart legs to the boom.
Claim 2
Independent Claim
212 words
An apparatus for aiding a sailer in controlling a wind propelled sailing device, the wind propelled sailing device including a water engaging hull means and a sail means having a sail for receiving wind for motive power pivotally attached to the hull means and universally pivotable with respect to the hull means and having a substantially lateral boom for controlling the sail means, the boom being positioned about a lower end of the sail and along both sides of the sail, the apparatus comprising: a substantially rigid U-shaped control member for transmitting forces from the sailer to the boom to control the steering of the sailing device, the control member having a pair of spaced-apart legs with spaced-apart first ends and having a handle portion extending between second ends of the legs, the handle portion being of sufficient length to permit grasping thereof by a pair of hands of the sailer so that the sailer can apply forces to the control member; and connecting means for pivotally connecting the spaced-apart first ends of the spaced-apart legs to the boom to permit pivotal movement of the control member about an axis of the boom and to transmit forces perpendicularly to the axis from the handle portion through the spaced-apart legs to the boom.
Claim 3
Dependent Claim
42 words
The improvement of claim 1 wherein the boom extends outwardly from the mast on both sides of the sail in a general wishbone type configuration and wherein there is a rigid member attached to the boom on both sides of the sail.
Claim 4
Dependent Claim
23 words
The improvement of claim 1 and further including: means for limiting movement of the rigid control member along the axis of the boom.
Claim 5
Dependent Claim
15 words
The device of claim 1 wherein the handle portion is substantially parallel to the boom.
Claim 6
Dependent Claim
171 words
A wind propelled sailing device comprising: a water engaging hull; a mast pivotally attached to the hull and universally pivotable with respect to the hull; a sail attached to the mast; a substantially lateral boom extending from the mast for holding the mast and controlling the sail, the boom being positioned above a lower end of the sail and along both sides of the sail; a substantially rigid U-shaped control member having a pair of spaced-apart legs with spaced-apart first ends and a rigid handle portion connecting the legs, the handle portion being of sufficient length to permit grasping thereof by a pair of hands of the sailor so that the sailor can apply forces to the control member; and pivotal connecting means for pivotally connecting the spaced-apart first ends of the rigid control member to the boom to permit pivotal movement of the control member about an axis of the boom and to transmit forces perpendicularly to the axis from the handle portion through the spaced-apart legs to the boom.
Claim 7
Dependent Claim
171 words
A wind propelled sailing device comprising: a water engaging hull; a mast pivotally attached to the hull and universally pivotable with respect to the hull; a sail attached to the mast; a substantially lateral boom extending from the mast for holding the mast and controlling the sail, the boom being positioned above a lower end of the sail and along both sides of the sail; a substantially rigid U-shaped control member having a pair of spaced-apart legs with spaced-apart first ends and a rigid handle portion connecting the legs, the handle portion being of sufficient length to permit grasping thereof by a pair of hands of the sailor so that the sailor can apply forces to the control member; and pivotal connecting means for pivotally connecting the spaced-apart first ends of the rigid control member to the boom to permit pivotal movement of the control member about an axis of the boom and to transmit forces perpendicularly to the axis from the handle portion through the spaced-apart legs to the boom.
Claim 8
Dependent Claim
42 words
The improvement of claim 5 wherein the boom extends outwardly from the mast on both sides of the sail in a general wishbone type configuration and wherein there is a rigid member attached to the boom on both sides of the sail.
Claim 9
Dependent Claim
23 words
The improvement of claim 5 and further including: means for limiting movement of the rigid control member along the axis of the boom.
Claim 10
Dependent Claim
15 words
The device of claim 5 wherein the handle portion is substantially parallel to the boom.
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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) | 1986-12-05 | 1987-06-06 | 1987-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-05 | 1991-06-06 | 1991-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-05 | 1995-06-06 | 1995-12-06 | $7700.00 | Window Closed / Lapsed |