Patent ID: 6823809
Filing Date: 2004-11-30
Classification: B63C

Abstract:
A watercraft lift for raising and lowering a watercraft, comprising of:a lifting structure configured to receive and support the watercraft; first and second floats positioned on opposite sides of the lifting structure; at least first and second lifting arms each having a first end portion pivotally connected to the lifting structure and an opposite second end portion connected to one of the first and second floats, the first and second lifting arms being rotatable about the first end portion relative to the lifting structure between a raised first position extending laterally outward whereat the first and second floats are positioned laterally outward of the lifting structure and the lifting structure is sufficiently submerged to receive and deploy the watercraft, and a lowered second position extending downward whereat the first and second floats are positioned vertically below the lifting structure and the lifting structure thereby sufficiently raised to lift the watercraft out of the water, the second end portions of the first and second lifting arms being pivotally connected to the first and second floats, respectively, at a location on the first and second floats to cause the first and second floats to rotate about the second end portions relative to the first and second lifting arms under the buoyancy forces on the first and second floats as the first and second lifting arms move between the first and second positions thereof; and at least first and second drive members connected to the lifting structure, the first drive member being connected to the first lifting arm to move the first lifting arm between the first and second positions thereof, and the second drive member being connected to the second lifting arm to move the second lifting arm between the first and second positions thereof.