Swimming pool chair lift
OwnerJ. E. Nolaninventor
Life of this patent
Estimating the term…
Abstract
A device for transporting objects vertically and in a helical pattern into and out of a pool of water or similar liquid including carrier means, hydraulic cylinder means adapted to receive the carrier means and be activated by a selected fluid at a selected pressure, guide means carried by the cylinder and adapted to follow a helical elongated cam means as the cylinder is moved vertically along the cam means into and out of the pool of liquid, frame means connecting the hydraulic cylinder and cam means to the structure of the pool. Pressurized fluid supply means are provided to selectively supply fluid at a selected pressure to the hydraulic means whereby the carrier can be lowered into or raised out of the pool while being rotated through an arc during a portion of the upward and downward travel of the hydraulic cylinder.
Claims3
A chair lift apparatus for transporting an individual in a generally vertical path into and out of a water pool through an arc extending between a first radial position overlying the edge of the pool and a second radial position overlying the water, the apparatus comprising
- (a) a stationary support post vertically oriented in the pool water;
- (b) cam guide means formed on the periphery of the support post and extending vertically along a substantial length of the support post, said cam guide having a helical twist near the upper end thereof, the degree of twist forming an arc leading between said first and second radial positions;
- (c) fluid pressure responsive hydraulic cylinder means supported by said post with the wall of said cylinder surrounding said post and being movable reciprocally between an upper position with at least a first portion of the cylinder extending above the level of the pool edge and a lower position with at least a second portion of the cylinder extending beneath the surface of the water, said first and second portions having an overlapping segment;
- (d) cam follower means attached to the lower end of the cylinder means between the cylinder wall and the post and cooperating with the cam guide means to rotate the cylinder through said arc as the cylinder moves near the upper end of its vertical travel;
- (e) a carrier mounted on the overlapping segment of the cylinder means and adapted to receive and hold the individual during the transporting operation;
- (f) and valve controlled fluid supply means for selectively supplying and emitting pressurized fluid to and from said cylinder to raise and lower the cylinder and carrier whereby the individual is transported between said first radial position with the individual oriented over the edge of the pool and said second radial position with the individual in the water.
Dependencies are inferred from the claim text.