Patent ID: 6408776
Filing Date: 2002-06-25
Classification: B63C,B66F

Abstract:
A single motor, synchronously driven boat lift comprising:a proximal support structure locatable on a first side of the boat to be lifted; a distal support structure locatable on an opposite second side of the boat; a single motor mounted on said proximal support structure and being selectively driven in opposing first and second directions; a boat accommodating platform located between said proximal and distal support structures and including an elongate pair of interconnected cradle beams for extending across and beneath the boat from the first side to the second side of the boat, each said beam having a proximal portion and a distal portion positionable respectively on the first and second sides of the boat; and means operably interconnecting said motor and said platform for synchronously raising said proximal and distal portions of said beams when said motor is driven in said first direction and lowering said proximal and distal portions of said beams when said motor is driven in said second direction, whereby the boat supported on said platform is raised and lowered, respectively; said means for raising and lowering including a pair of proximal cables, each of which is operably connected to said proximal portion of a respective beam for enabling raising and lowering thereof and a pair of distal cables, each of which is operably connected to said distal portion of a respective said beam for enabling raising and lowering thereof, said means for raising and lowering further including a winder assembly that is rotatably interconnected to said motor and having a pair of relatively large diameter winder drums operably connected to respective distal cables and a second pair of relatively small diameter winder drums operably connected to respective proximal cables.