Shiplift apparatus

Details Shiplift apparatus Shiplift apparatus

1980-05-22

1982-05-11

Purser, Ernest R.

Hydraulic and earth engineering

Marine vessel portage, launching, or removing

Lifting

114 48, B63C 306

Patent

active

043290825

ABSTRACT:
The present shiplift apparatus has a horizontal lift platform with eight lift points (four on each side along the length of the platform). Four lift motors are provided, each operating a first cable for lifting the platform at a lift point which is located toward the longitudinal, midpoint of the platform and a second cable for lifting the platform at a lift point near one end or the other of the platform. Each second cable is connected to a linear actuator for leveling up the platform independent of the lift motors.

REFERENCES:
patent: 481411 (1892-08-01), Moran
patent: 3073125 (1963-01-01), Pearlson
patent: 3504502 (1970-04-01), Blount
patent: 3777691 (1973-12-01), Beale
patent: 4087979 (1978-05-01), Pearson

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