The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 1978
Filed:
Jun. 09, 1977
Robert Stuart Jamieson, San Pedro, CA (US);
Other;
Abstract
An elongated spar is attached longitudinally to cross-members interconnecting the hulls of plural-hull sailing craft, which spar projects forward to provide points of attachment for the forestays and headsail tacks of the sailing craft, whereby the forces exerted by the forestays and headsail tacks are removed from the bows of the hulls of the sailing craft and employed to oppose mast downthrust forces, substantially reducing the load on the hull-interconnecting structure. If applied to existing sailing craft the danger of hull breakage is eliminated and danger of hull-interconnecting structure failure is greatly reduced. The forward projection of the spar may be fabricated to cause a controllable lateral deflection of the luff of the headsail, to vary the airflow through the slot between the headsail and a mainsail. Similarly, an aftward projection may be employed to control mainsail sheeting angle and to make the mainsail self-tending when the sailing craft tacks. For sailing craft which reverse the direction of travel identical projections are provided at both ends of the spar. For sailing craft undergong a mirror-image transformation in spatial relationship of the hulls the spar is pivotally mounted such that the sails also undergo a mirror-image transformation simultaneously.