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US 11,027,801 B2Granted
Boat lift
OwnerSean A. Barnes, Michael W. Kirbyinventors
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Abstract
A boat lift has one or more pumps that evacuate water from a first flotation tank construct and a second flotation tank construct to create flotation of the boat lift. Modular boat lifts may be constructed according to the invention that have substantial size but are transportable by truck for construction on site.
Claims18
A boat lift, comprising:
- a boat lift construct constructed and arranged to receive a boat hull on an upper surface thereof, the boat lift construct comprising;
- a first flotation tank construct, a second flotation tank construct,
- a transverse tank set crosswise between the first flotation tank construct and the second flotation tank construct, and
- a pump positioned within the transverse tank,
- wherein the first flotation tank construct and the second flotation tank construct are in hydraulic communication through the transverse tank, and wherein the pump is constructed and arranged to remove water from the first flotation tank construct and the second flotation tank construct,
- wherein the boat lift construct comprising the first flotation tank construct, the second flotation tank construct and the transverse tank is configured to lower the boat hull by submerging the boat lift tank construct by flooding the boat lift construct and to raise the boat hull by lifting the boat lift construct by the pump pumping water from the boat lift construct.
3 more elements
Dependencies are inferred from the claim text.