Hydraulic and earth engineering – Marine vessel portage – launching – or removing – Lifting
Patent
1993-12-06
1996-01-09
Taylor, Dennis L.
Hydraulic and earth engineering
Marine vessel portage, launching, or removing
Lifting
114 44, 405221, 254 10C, B63C 306
Patent
active
054824010
ABSTRACT:
The present invention features an adjustable corner assembly for a boat-lift. The corner assembly of this invention may be designed to replace corner posts of other boat-lift mechanisms. It can also be designed as part of a boat-lift frame. In either capacity, it is very flexible in its adjustment, so that the lifting frame may be raised from the water without the need for adjusting and/or securing the posts below the water level. In one embodiment, the corner assembly has a footing that is placed to rest on the bottom of a body of water. One leg extends upwardly from the footing. A small plate is welded to otherwise secured inside the leg. The plate has a threaded hole in the center for receiving and rotatively securing a worm drive. The worm drive is rotatably placed through a cap affixed atop a sleeve. The sleeve slides upon the leg, as the worm drive is rotated. The worm drive extends above the cap of the sleeve, where it is rotatively, manually cranked by wrench or other suitable tool, or by an electric motor.
REFERENCES:
patent: 907645 (1908-12-01), Sauber
patent: 3614871 (1971-10-01), Nordell
patent: 5046897 (1991-09-01), Ray
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