Ships – Spars – Masts and masting
Patent
1977-09-30
1978-09-12
Blix, Trygve M.
Ships
Spars
Masts and masting
114 39, B63B 1500
Patent
active
041128613
ABSTRACT:
A sailboat hull is provided including an upright mast having upper and lower end portions. First structure pivotally supports the lower end of the lower end portion of the mast from the hull for swinging between an upright position and a lowered position with the upper end of the lower end portion swung toward one end of the hull. Second structure pivotally supports the lower end of the upper end portion from the upper end of the lower end portion for swinging between an upright position and a lowered position with the upper end of the upper end portion swung toward the other end of the hull. Third structure is operatively connected between the upper and lower end portions of the mast and the hull operative for sequentially controllably lowering the lower end portion from its upright position to its lowered position while maintaining the upper end portion upright and thereafter controllably lowering the upper end portion from its upright position to its lowered position and for sequentially controllably raising the upper end portion from its lowered position to an upright position and thereafter controllably raising the lower end portion from its lowered position to its upright position while maintaining the upper end portion of the mast upright.
REFERENCES:
patent: 3768426 (1973-10-01), Kratz
patent: 3827386 (1974-08-01), Faden
Blix Trygve M.
Jacobson Harvey B.
Keen D. W.
O#Brien Clarence A.
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