Boom for sailing vessel
AssigneeHarken, Inc.
InventorsOlaf T. Harken, Eric R. D. Hall, S. Dirk Kramers
Life of this patent
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Abstract
A boom for a sailing vessel has a forked forward portion hinged to the mast at spaced locations to permit rotation or swinging of the boom only in a horizontal plane.
Claims11
In a sailing vessel having an upright member for supporting a boom for a sail, the improvement wherein said boom comprises an elongate member extending rearwardly and generally horizontally from the upright member and terminating at a free end, first hinge means for connecting the forward end of said elongated member to said upright member, an elongate leg extending forwardly and downwardly from said elongate member to a point generally vertically aligned with the forward end of the elongate member, said leg being integral with said elongate member, and second hinge means for connecting said leg to said upright support at a location spaced from said first hinge means, at least one of said hinge means permitting rotation of said boom only in a substantially fixed horizontal plane.
In a sailing vessel having an upright member for supporting a boom for a sail, the improvement wherein said boom comprises an elongate member extending rearwardly and generally horizontally from the upright member and terminating at a free end, a leg extending forwardly and downwardly from said elongate member to a point generally vertically aligned with the forward end of the elongate member, a vertical track secured to said upright support, first and second cars slidably mounted on said track, and first and second hinge means for connecting the forward end of said elongate member and said leg to said first and second cars, respectively, at least on of said hinge means permitting rotation of said boom only in a substantially horizontal plane.
Dependencies are inferred from the claim text.