초록 ▼

A camber inducer for use with a double surfaced wing sail on various sail-driven craft such as sailboats, sailboards, ice boats, land sailors, hang gliders and the like. The camber inducer, in cooperation with battens and the first and second surfaces of a double surfaced sail, provides an efficient

A camber inducer for use with a double surfaced wing sail on various sail-driven craft such as sailboats, sailboards, ice boats, land sailors, hang gliders and the like. The camber inducer, in cooperation with battens and the first and second surfaces of a double surfaced sail, provides an efficient and easy to use airfoil sail.

대표청구항 ▼

[ What is claimed and desired to be secured by United States Letters Patent is:] [1.] A batten retaining device for a wing sail, the wing sail having a first sail surface and a second sail surface; the batten retaining device comprising:(a) a first means for receiving a first elongated batten;(b) a

[ What is claimed and desired to be secured by United States Letters Patent is:] [1.] A batten retaining device for a wing sail, the wing sail having a first sail surface and a second sail surface; the batten retaining device comprising:(a) a first means for receiving a first elongated batten;(b) a second means for receiving a second elongated batten;(c) a body means for providing coupling structure from said first means for receiving to said second means for receiving, said body means positioned substantially between said first and second means for receiving, the body means being fabricated from relatively rigid material having sufficient strength to resist collapse or deformation caused by the sail pressing on said first and second elongated battens;(d) said first means for receiving positioned on said body means at a predetermined angle in relation to said second means for receiving, whereby battens placed in each of the first and second means for receiving diverge from each other at said predetermined angle to hold the first surface of the wing sail substantially apart from the second surface of the wing sail; and(e) a pair of arms, each arm having a proximal end and a distal end, the proximal end being connected to the body and the distal end terminating adjacent to a mast whereby said pair of arms provide a means for transferring rotational movement of said mast to the arms to impart a rotational movement to said body, and whereby said body rotates substantially in synchronization with said mast. [9.] A boom to mast connection for rotatably connecting a mast to a boom, the boom being attached at approximately a right angle to said mast, the mast having a longitudinal axis, the mast being able to rotate about said longitudinal axis while fully rigged for use in sailing, said connection comprising:(a) a body structure;(b) a means for attaching to a boom, the means for attaching positioned on said body structure;(c) a means for attaching to a mast, said means connected to said body structure wherein the means for attaching to a mast includes a secure coupling means, whereby said mast is held without allowing slippage between said mast and said coupling means; and(d) a means for mast rotation, whereby said mast is able to rotate about the axis of said mast in relation to said boom while maintaining substantially a right angle with said boom, wherein the means for mast rotation comprises an arm connected to said secure coupling means for applying rotational force to said mast, said arm being able to assume a first rotational position or a second rotational position, and said arm being able to pivot between said first and second rotational position, whereby a mechanical advantage is used to impart a rotational force to said mast. The boom to mast connection of claim 9 further including a means for applying a rebounding force to said arm whereby the rebounding force tends to maintain said arm in one of said first or second rotational positions. The boom to mast connection of claim 10 wherein said means for applying a rebounding force comprises a spring.