Davit system for lifting boats, jet skis, motorcycles and...

Details Davit system for lifting boats, jet skis, motorcycles and... Davit system for lifting boats, jet skis, motorcycles and...

2005-10-18

2005-10-18

Underwood, Donald W. (Department: 3652)

Material or article handling

Vertically swinging load support

C114S259000, C296S026100

Reexamination Certificate

active

06955519

ABSTRACT:
A davit system includes an elongate base having a straight part and a leading part that is angled downwardly relative to the straight part at a predetermined angle. An elongate boom arm is slideably disposed in a hollow interior of the elongate base. The boom arm is fully retracted within the hollow interior of the elongate base when an elongate screw is rotated in a first direction a predetermined number of times and the boom arm is fully extended from the hollow interior of the elongate base when the elongate screw is rotated in a second direction a predetermined number of times. The boom arm is downwardly angled at the predetermined angle when the boom arm is in its fully extended position. In a first embodiment, two elongate bases and boom arms are provided and each boom arm supports a cradle at its leading end for lifting a boat.

REFERENCES:
patent: 1388831 (1921-08-01), Broady
patent: 2527060 (1950-10-01), Dohn
patent: 6591770 (2003-07-01), Blackmore
patent: 6698994 (2004-03-01), Barrett

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