Hydraulic and earth engineering – Marine vessel portage – launching – or removing – Lifting
Patent
1996-05-23
1998-05-26
Taylor, Dennis L.
Hydraulic and earth engineering
Marine vessel portage, launching, or removing
Lifting
114 48, B63C 306
Patent
active
057555290
ABSTRACT:
A boat lift for lifting a boat above the water adjacent to a wharf on a water bed comprises a wharf attachment mounted to the wharf above the water; a frame having a wharf end portion hinged adjacent to the wharf attachment; a footing seated on the water bed beneath the outer end portion of the frame; and scissor arms one having a top end portion which is hinged to the outer portion of the frame; the other having a top end portion which is hinged to the lower end portion of the upper scissor arm and a lower end portion which is hinged to the footing therebelow; and opening/closing means to alternatively fold the scissor arms together and open them to a straight in-line position; whereby when the scissor arms are in a closed position the outer end portion of the frame is in a lowered position beneath the water so that a boat may be driven above the frame onto the wharf end portion thereof, and then when the scissor arms are straightened to an in-line position the boat is first fully seated on the frame and then lifted out of the water. In one aspect of the invention the opening/closing means is a manually powered winch. In another aspect of the invention, preferred for larger boats, the opening/closing means is a water driven hydraulic cylinder which can be fabricated from PVC plumbing pipes and fittings.
REFERENCES:
patent: 2505832 (1950-05-01), Lange
patent: 4027492 (1977-06-01), Carpenter
patent: 4037421 (1977-07-01), Whitley
patent: 4787327 (1988-11-01), Porter
patent: 5380143 (1995-01-01), Mohan
Taylor Dennis L.
Thompson David
LandOfFree
Boat lift does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Boat lift, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boat lift will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1953925