Patent ID: 6361022
Filing Date: 2002-03-26
Classification: B63C,B66C

Abstract:
A lifting device for raising and lowering an elongate object into a storage position, the elongate object having a first longitudinal axis; the lifting device comprising:a) at least a first and a second pair of pulleys, said first and second pairs of pulleys being spaced from one another along a second longitudinal axis, each individual pulley of said first and second pair of pulleys spaced laterally from said second longitudinal axis, each of said first and second pair of pulleys connected to an upright support; b) individual lines passing over each individual of said pairs of pulleys, each of said individual lines having means for attachment to the elongate object, each of said individual lines having second ends; and c) a multiple purchase block and tackle system spaced from one of said pairs of pulleys along said second longitudinal axis, said multiple purchase block and tackle system comprising a first and a second end, an adjustable hauling line means reeved between said block and tackle first and second ends for moving said block and tackle system ends towards one another with multiple purchase, said block and tackle system first end connected to said second ends of said individual lines, said block and tackle second end attached to an upright support, whereby hauling on said hauling line causes said block and tackle first end to move towards said block and tackle system second end and said individual lines are thereby simultaneously moved.