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US 5,690,045 AGranted
Personal watercraft lift at transom
AssigneeMarine Automation, Inc.
InventorMark W. Gauthier
Life of this patent
Estimating the term…
Abstract
A hoisting mechanism attached to the transom of pleasurecraft is provided which raises and lowers a platform to hoist personal watercraft, such as a water jet propelled personal watercraft, into and out of the water with a minimal amount of apparatus externally of the transom.
Claims17
A transom mountable lifting device for a boat which includes a transom having an interior and an exterior;
- said lifting device comprising:
- a platform for location at said transom exterior;
- a pair of external pivot arms for location at said transom exterior, operably associated with said platform to move up or down therewith;
- said pair of external pivot arms being arranged in mirror image to each other and movable up or down simultaneously to lift or lower said platform;
- a pair of pivot shafts extendable through said transom between its interior and exterior;
- said pair of external pivot arms being connected to said pivot shafts to pivot therewith;
- a pair of internal pivot arms for location at said interior of said transom, in mirror image to each other, and operably connected to said pivot shafts to pivot therewith;
- and
- a power actuator for location at said transom interior, operably associated with said pair of internal pivot arms, and movable to shift said pair of internal pivot arms, said pair of pivot shafts, and said pair of external pivot arms to lift or lower said platform.
6 more elements
A transom mountable lifting device for a boat which includes a transom having an interior and an exterior;
- said lifting device comprising:
- a platform for location at said transom exterior;
- a pair of external pivot arms for location at said transom exterior, operably associated with said platform to move up or down therewith;
- said pair of external pivot arms being arranged in mirror image to each other and movable up or down simultaneously to lift or lower said platform;
- a pair of pivot shafts having transom clamps, said pivot shafts extendable through said transom between its interior and exterior;
- said pair of external arms having a trunion connection to said pivot shafts to pivot therewith and to allow for curvature of said transom;
- a pair of internal pivot arms for location at said interior of said transom, in mirror image to each other, and operably connected to said pivot shafts to pivot therewith;
- a power actuator for location at said transom interior, operably associated with said pair of internal pivot arms, and movable to shift said pair of internal pivot arms, said pair of pivot shafts, and said pair of external pivot arms to lift or lower said platform;
- a plurality of vertical guide rods for location external of said transom, said guide rods having a plurality of rod engaging rollers and mounted to said platform at spaced intervals across the width of said platform, for stabilizing said platform when lifted and lowered.
6 more elements
Dependencies are inferred from the claim text.