Patent ID: 6964239
Filing Date: 2005-11-15
Classification: B63C

Abstract:
1. A boat lift comprising: at least one parallelogram linkage supporting a cradle of boat bunks, the at least one parallelogram linkage including at least one aqueous hydraulic cylinder; a plurality of pontoons for floating the boat lift on a water surface; a base structure supporting the at least one parallelogram linkage and the plurality of pontoons, the base structure including beams made of a series of beam pieces such that lengths of the beams can be altered by changing a number of beam pieces using joining plates to thereby create a modular base structure, wherein the modular base structure facilitates field alterations; and a plurality of channel float beams supporting the pontoons, the pontoons being of alterable length and movable position, by altering a number of modular floats used in the pontoons thereby allowing the boat lift to accommodate boats of different weights and to accommodate level lifting of boats with variable centers of gravity.