Hydraulic and earth engineering – Marine vessel portage – launching – or removing – Lifting
Patent
1988-08-01
1990-09-04
Reese, Randolph A.
Hydraulic and earth engineering
Marine vessel portage, launching, or removing
Lifting
405221, 114 48, 187 859, 439504, B63C 308
Patent
active
049540114
ABSTRACT:
A powered method and apparatus for raising and lowering a boat in a boat lift with quick connection to and use of the boat battery to power a DC electric motor on the lift. A method of converting a manual lift to a powered lift is provided. The lift drive has a tractive drive unit with a friction wheel and the motor and a reduction drive, a drive unit subframe, a drive unit mount adjustable on the frame of the lift, adjustment structure to locate the subframe in a desired position in any one of a variety of boat lifts and with respect to a variety of manually operable lift actuator wheels, structure to resiliently bias the friction wheel against the actuator wheel, structure to stably remove the friction wheel from the actuator wheel, a quick connector for connection to a boat battery, and a switch for selective control of motor operation and direction of rotation.
REFERENCES:
patent: Re32118 (1986-04-01), Godbersen
patent: 2934220 (1960-04-01), Murphy
patent: 3012757 (1961-12-01), Marzolf
patent: 3077742 (1963-02-01), Brown
patent: 3169644 (1965-02-01), Godbersen
patent: 3177668 (1965-04-01), Schneider et al.
patent: 3275167 (1966-09-01), Godbersen
patent: 3697048 (1972-10-01), Sarno
patent: 3967570 (1976-07-01), Bradfield
patent: 4318632 (1982-03-01), Fortmeyer
patent: 4336975 (1982-06-01), Casteel
patent: 4726786 (1988-02-01), Hill
"Shore Line Lift Motor" advertisement, Shaveline Services Inc., Pine River, MN 56474.
"Shore Station Boat Hoists '88", advertisement, Shore-Station Marine Division, Ida Grove, Iowa 51445.
Kovar Henry C.
Olsen Arlen L.
Reese Randolph A.
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