Lift for watercraft

Details Lift for watercraft Lift for watercraft

1987-12-16

1990-01-23

Taylor, Dennis L.

Hydraulic and earth engineering

Marine vessel portage, launching, or removing

Lifting

405 4, 92165R, 254 93R, B63C 306

Patent

active

048954799

ABSTRACT:
A stationary rectangular base frame is mounted underwater and supports generally upwardly extending, swingable, parallel links or arms. A lift platform or lift pads are supported at the upper end portions of the arms and, in combination with the base frame and arms, form one or more upright parallelograms. A hydraulic jack is connected extending generally diagonally of the parallelogram arrangement and has a plunger for swinging the arms to translate the lift platform or pads up to remove a watercraft from the water or down to lower the watercraft back into the water.

REFERENCES:
patent: 2505832 (1950-05-01), Lange
patent: 2896583 (1959-07-01), Stixrood
patent: 2963176 (1960-12-01), Smith
patent: 3021965 (1962-02-01), Harvey
patent: 4087076 (1978-05-01), Getty
patent: 4211151 (1980-07-01), Wallischeck
patent: 4300439 (1981-11-01), Degnan et al.

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