Baths – closets – sinks – and spittoons – Pool type – Adjustable bottom
Patent
1996-06-28
1997-10-21
Walczak, David J.
Baths, closets, sinks, and spittoons
Pool type
Adjustable bottom
4504, 254 89R, E04H 400
Patent
active
056782535
ABSTRACT:
An adjustable flooring structure for a pool includes a platform and three groups of hydraulic cylinders. The first group of cylinders is vertically mounted to the platform and is extendable between a minimum first length and a maximum first length for lifting the pool from a minimum height to an intermediate height. The second group of cylinders is pivotally mounted to the platform and movable between a horizontal disposition and a vertical disposition for lifting of the platform. The second group of cylinders is extendable between a minimum second length and a maximum second length for lifting the platform from the intermediate height to the maximum height when the second group of cylinders are vertically disposed. The third group of cylinders are pivotally mounted to the platform and are pivotally mounted to the second group of cylinders for moving the second group of cylinders between the horizontal disposition and the vertical disposition when the platform is at the intermediate height. Alternatively, the second and the third groups of cylinders can be mounted to the base of the pool rather than the platform. Hydraulic lines connect the cylinders to a hydraulic power pack and a control panel for controlling the operation of the three groups of cylinders. Wheels are mounted to the edges of the platform and disposed in channels along the side walls of the pool to position and guide the platform within the pool.
REFERENCES:
patent: 3220585 (1965-11-01), McCartney
patent: 3287024 (1966-11-01), Ulinski
patent: 3670343 (1972-06-01), Gansloser
patent: 4229843 (1980-10-01), Belanger
patent: 4574404 (1986-03-01), Stark, Sr.
patent: 4937896 (1990-07-01), Niimura
patent: 5025512 (1991-06-01), Niimura
patent: 5295929 (1994-03-01), Weisz
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