Patent ID: 6612775
Filing Date: 2003-09-02
Classification: B63C

Abstract:
Watercraft lift apparatus, comprising:a) a submersible base framework including a plurality of longitudinal and cross frame members; b) a watercraft cradle having a plurality of frame members arranged to receive and support a watercraft and mounted to pivot in substantial overlying relation to said base framework between an elevated storage position whereat a supported watercraft is elevated above a waterway, and a submerged position whereat the watercraft can be manipulated onto or off of said cradle; c) a hydraulic cylinder having a housing mounted to a pivot axle projecting from said base framework above a water level elevation and a piston mounted to a pivot axle projecting from said cradle and operable for reciprocating movement relative to said housing and wherein only a portion of said piston extended from said housing is exposed to the water when said cradle is lowered to said submerged position; and d) means for directing hydraulic fluid to said housing to control the movement of said piston.