Positive drive boat lift

Details Positive drive boat lift Positive drive boat lift

1997-06-04

1999-06-29

Taylor, Dennis L.

Hydraulic and earth engineering

Marine vessel portage, launching, or removing

Lifting

114 44, 187214, B63C 306

Patent

active

059158778

ABSTRACT:
A positive drive boat lift apparatus includes a support structure located proximate a body of water. There is an elongate threaded shaft disposed adjacent to the support structure and extending in a substantially vertical direction. A nut threadably engages the shaft. There is a boat accommodating platform and one of the shaft and the nut are attached to the platform. The other of the shaft and the nut are rotatably mounted to the support structure. The shaft and the nut are rotated relative to one another in a first direction to raise the shaft relative to the nut and in an opposite second direction to lower the shaft relative to the nut, whereby the platform and a boat accommodated thereon are selectively lifted and lowered relative to the body of water.

REFERENCES:
patent: 0047501 (1865-04-01), Turner
patent: 1073294 (1913-09-01), Siewert
patent: 2091156 (1937-08-01), Myers
patent: 2262833 (1941-11-01), Clawson et al.
patent: 2655223 (1953-10-01), Villars
patent: 3245658 (1966-04-01), Sutton
patent: 3276211 (1966-10-01), Drake
patent: 3537745 (1970-11-01), Herring
patent: 3958664 (1976-05-01), Perkins
patent: 4195948 (1980-04-01), Vancil
patent: 4552403 (1985-11-01), Yindra
patent: 4678366 (1987-07-01), Williamson

Affiliated with

Also associated with

Rating

Positive drive 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 Positive drive boat lift, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positive drive boat lift will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1369803