U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Sailboat

Patent 5392726 Issued on February 28, 1995. Estimated Expiration Date: Icon_subject July 27, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

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Inventor

Application

No. 097666 filed on 07/27/1993

US Classes:

114/39.21, WATERCRAFT WITH MEANS USED IN PROVIDING SAILPOWER114/90, Masts and mastingD12/303Sailboat (3)

Examiners

Primary: Avila, Stephen

Attorney, Agent or Firm

International Class

B63H 009/04

Abstract

A sailing craft having a center hull, a port hull and a starboard hull. The port and starboard hulls are adjustably connected to the center hull by bridge beams such that the port starboard hulls may be disposed adjacent to, or outward from, the center hull. An inverted U-shaped mast has legs angled outwardly and connected to the port and starboard hulls when the mast is erect and legs which are substantially parallel when the mast is stepped down for storage on the center hull. A primary boom is rotatably connected to the center hull and rotates through 360°. An articulating boom is pivotally connected to each of the ends of the primary boom. A sail shape boom is connected to the articulating booms by a trolley on each articulating boom. The head of a sail is connected to the top of the mast and the foot of the sail is connected to the sail shape boom. The sail and booms are rotatable through 360° without contacting the mast. Sail lines connected to the edges of the sail are separated into support lines which are disposed over the surfaces of the sail and connected to wishbone spars to maintain luff and each alignment and control the sail shape by equal tensioning applied by the halyard.

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