Vertically actuable roof cover for a spa

Baths – closets – sinks – and spittoons – Pool type – Accessory

Reexamination Certificate

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Reexamination Certificate

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07614093

ABSTRACT:
An actuator and an assembly utilizing two or more actuators for vertically actuating a cover for a spa. In the lowered position the cover protects the spa and in the elevated position the cover acts as a roof over the spa. The actuator is either a rack and pinion assisted by a cable and pulley or a chain and a plurality of sprockets assisted by a cable and pulley which are connected to lift member which are generally shrouded by telescoping tubes to cover the actuators or to act as lift members themselves. The system can be further enhanced using a gas spring to assist in lifting the cover and reduce the load of the cover weight off the motor which is used to actuate the actuators.

REFERENCES:
patent: 3395777 (1968-08-01), Rodosta
patent: 3566420 (1971-03-01), Peterson et al.
patent: 3679174 (1972-07-01), Boettcher
patent: 4078293 (1978-03-01), Aine
patent: 4165543 (1979-08-01), Reinert
patent: 4426744 (1984-01-01), Love
patent: 4598506 (1986-07-01), Nohl et al.
patent: 5035094 (1991-07-01), Legare
patent: 5745932 (1998-05-01), Barovetto
patent: 6196604 (2001-03-01), Hoh et al.
patent: 6718566 (2004-04-01), Wilson
patent: 7128003 (2006-10-01), Okninski
patent: 2379281 (2002-09-01), None
patent: 2521829 (1975-05-01), None
patent: 2555219 (1985-05-01), None

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