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US 5,575,229 AGranted
Control tackle apparatus for a sailboard rig outhaul
OwnerRichard Blackmerinventor
Life of this patent
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OwnerRichard Blackmerinventor
Estimating the term…
Tackle is provided to enable control of sail outhaul with one hand, while holding a windsurfing sail rig with the other. To avoid the use of jam cleats, pulleys and bungies, 3:1 ring cinches are used. A 3:1 ring cinch assembly is attached to right and left booms of the rig's wishbone boom. These are then attached to the ends of a clew line, which is part of 2:1 tackle from the boomtail to the outhaul grommet at the clew of the sail. The cinch line has four parts: (1) an anchor-part for a ring and a finder tab, (2) a pull-part for increasing sail outhaul, (3) a release-part for decreasing sail outhaul and (4) a cinch-part for pinching two cinch rings against the release-part while sharing the outhaul load with the pull and release parts. Through rigging geometry, the ring cinch pinch provides a self-energizing lock on the cinch line such that no slip can occur without a positive pull on the pull-part or release part. A tug line connects the ring cinches to a loop-cleat which, in turn, connects the 3:1 cinch assembly to the clew line.
An improved control tackle apparatus for a sailboard rig having a boom, a mast and a sail with a clew line under tension, said control tackle apparatus comprising:
An improved outhaul control tackle apparatus for a sailboard rig of the type which is attachable to a sailboard with a universal connection, said rig comprising a mast, a boom having a boomhead with an aft harness line attachment, an uphaul and a sail having an extended clew line, said tackle apparatus comprising:
Dependencies are inferred from the claim text.