Floating boat lift with retracting walkway

Details Floating boat lift with retracting walkway Floating boat lift with retracting walkway

1997-02-03

1998-10-27

Swinehart, Ed. L.

Ships

Vessel raising and docking

Floating dry docks

114 48, B63C 102

Patent

active

058265287

ABSTRACT:
A floating boat lift for raising a boat out of and securing same above a body of water. This boat lift consists of two float supported frames which are held parallel and separated by two parallel lift bars which are held parallel and separated by a pair of support bunks and, or, two crossed spacing members. The lift bars are attached to the float supported frames through the use of a pair of 7-link mechanisms on each end of each of the lift bars. These mechanisms, referred to as cascaded four bars in the following sections, are positioned such that the lift bar are between a pair on each end of the lift bars.

REFERENCES:
patent: 1752894 (1930-05-01), Degn
patent: 3951087 (1976-04-01), Carson
patent: 4072119 (1978-02-01), Williams
patent: 4686920 (1987-08-01), Thomas
patent: 4750444 (1988-06-01), Lemvig
patent: 4773346 (1988-09-01), Blanding
patent: 4955308 (1990-09-01), Craddock
patent: 5099778 (1992-03-01), Palen

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