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US 3,991,694 AGranted
Wind-propelled apparatus
OwnerRobert Bruce Blackinventor
Life of this patent
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Abstract
Wind-Propelled craft including a transport carrying a sail and including a support vehicle pulled by the transport. The support vehicle is pivotally secured to the transport. The transport and sail turn as one unit relative to the support vehicle about an axis so that the transport can assume any number of angles relative to the support vehicle. The transport and support vehicle operate with high capsize resistance for all headings of the wind.
Claims2
A wind-propelled craft for transport on a medium, comprising:
- a pair of spaced transport members and a support member disposed generally at the corners of a triangular configuration, said support member having a downwardly extending fin disposed in the medium for inhibiting sideways movement of said support member;
- a mast upstanding from said triangular configuration;
- frame means including stays and spars disposed radially from the foot of the mast and extending from said transport members and support member to the foot of said mast for maintaining said mast upstanding and for maintaining the triangular configuration of said spaced transport and support members;
- a second fin centrally disposed in the triangular configuration proximate to the mast and extending into the medium for inhibiting sideways movement of the craft;
- means supporting said second fin for both rotation and translation with respect to the frame means;
- attachment means pivotally securing the frame means to said support member;
- a sail operatively connected to the frame means and having corners describing essentially a plane;
- and means for maintaining said attachment means at a fixed distance from said plane.
5 more elements
Dependencies are inferred from the claim text.