Patent ID: 8267621

Claim:
A floating boatlift assembly comprising: a pair of generally parallel spaced-apart elongated and generally parallel float assemblies for receiving an elongated boat hull therebetween; a cradle assembly extending between the float assemblies and adapt to support such boat hull thereon; a first pair of spaced cables extending from the cradle assembly; a first cable handing unit arranged on a first of the float assemblies and connected to the first pair of cables and operable to move the cradle assembly; a second pair of spaced cables extending from the cradle assembly; a second cable handling unit arranged on a second of the float assemblies and connected to the second pair of cables and operable together with the first cable handling assembly to raise the cradle assembly into the raised position out of water with the first and second pair of spaced cables and operable to permit lowering of the cradle assembly into the lowered position to float such boat hull in water; each of the first and second cable handling units includes a hydraulic cylinder and a cylinder rod respectively connected to the first and second pair of spaced cables; each of the first and second cable handling units further includes a double groove sheave and a pair of downward transition sheaves through which the first and second pair of spaced cables are routed; the cradle assembly includes at least a pair of spaced cross members extending between the float assemblies; each of the floating assemblies define a channel for movably accommodating at least one of the pair of spaced cross-members therein during raising and lowering of the cradle assembly; at least one of the floating assemblies includes a cross-member guide aligned with and extending below the channel of the float assembly for guiding the cross-member into the channel during raising of the cradle assembly and to maintain the cross-member generally vertically aligned with the channel when the cross-member is below bottoms of the float assemblies; and the cross-members and the float assemblies include a plurality of complementary wedge locks, the wedge locks engaging when the cradle assembly is in the raised position.