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US 4,905,621 AGranted
Sail changing cartridge
OwnerJesse M. Hellmaninventor
Life of this patent
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Abstract
A sail changing system wherein the sail is controlled by slides which are attached to the lufftape by short cords, which slide along beside the lufftape in a grooved track on the foil when the sail is raised, and which feed into a cartridge when the sail is lowered.
Claims1
A sail changing system comprising:
- (a) a sail with a fore and aft edge;
- (b) lufftape sewn into said sail's fore edge;
- (c) a series of slides, each attached separately behind the fore edge of the sail at intervals by means of cords;
- (d) a foil containing two parallel grooves, one groove to hold the lufftape and the other to hold the slides, such that the lufftape and the slides can move freely along their respective grooves and such that when the sail is lowered the lufftape leaves its groove;
- (e) a container attached to the base of the foil into which the slides feed when the sail is lowered and the slides leave the slide groove;
- and
- (f) a means for quickly attaching and detaching the container from the foil.
4 more elements
Dependencies are inferred from the claim text.