Drydock lifting platform

Details Drydock lifting platform Drydock lifting platform

1976-10-21

1978-05-09

Shapiro, Jacob

B63C 109

Patent

active

040879798

ABSTRACT:
A lifting platform of a drydock has plural sections along its length pivoted together at transverse support beams supported at each end by winch cables; flotation chambers in other embodiments contain air or foamed resin and are always below the lowest water level to offset 75% to 90% of the platform weight and reduce cable load.

REFERENCES:
patent: 1380141 (1921-05-01), Hamilton
patent: 3073125 (1963-01-01), Pearlson
patent: 3265024 (1966-08-01), Kramlich
patent: 3626447 (1971-12-01), Hindlin

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