Ships – Spars – Masts and masting
Patent
1989-03-10
1990-06-19
Basinger, Sherman D.
Ships
Spars
Masts and masting
B63B 1500
Patent
active
049342991
ABSTRACT:
A mast foot assembly for adjustably and releasably holding a mast to a mast track disposed on a surface of a sailing device. A base member is disposed on the upper surface of the mast track and has a pair of first bores at respective ends thereof disposed over the slot. It also has a central mounting portion between the first bores with a second bore therethrough normal to the upper and lower surfaces and having a first slot communicating between a side of the base member and the second bore. There is a retaining key member sized to slidably fit within the first slot in the base member and having a second slot communicating with an inner end thereof. A pair of nut members each having a treaded bore therein are disposed under the lower surface of the mast track. A pair of threaded members are carried by the base member and pass through respective ones of the first bores in threaded engagement with respective ones of the nut members. The threaded members each have a head portion unable to pass through the first bore associated therewith. There is a cylindrical pivot and retaining pin carried by a lower end of the mast having a circumferential groove aligned with the first slot with the mast disposed on the base member with the pin disposed in the second bore. The retaining key member is slidable into the first slot to have portions simultaneously engaged with the first slot and the groove to pivotally retain the pin in the second bore and is slidable out of the first bore to allow the pin and the mast carrying it to be removed from the base portion. Finally, there is a cam handle carried by the base portion with the threaded members passing therethrough for simultaneously creating or releasing a lifting force on the head portion of the threaded members.
REFERENCES:
patent: 3107571 (1963-10-01), Burg
Basinger Sherman D.
Streck Donald A.
Windsurfing Hawaii, Inc.
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