Sheet roll up

Details Sheet roll up Sheet roll up

1996-07-09

1999-04-06

Fetsuga, Robert M.

Baths, closets, sinks, and spittoons

Pool type

Accessory

185 7, 185 33, 160243, 160310, E04H 410

Patent

active

058902406

ABSTRACT:
A drum for rolling up and unrolling protective covers has a driven pendulum within for applying a rotary moment to cause the drum to roll. The pendulum is powered in one rotary direction or the other by an electrical motor according to a signal from outside the drum, and battery packs are enclosed with the drive elements to provide a power source. A sealed drum is provided to float in swimming pools. In another embodiment, a common electric drill is used for the drive mechanism.

REFERENCES:
patent: 2909145 (1959-10-01), De Hertelendy
patent: 2977714 (1961-04-01), Gibson
patent: 3070811 (1963-01-01), Bender
patent: 3693695 (1972-09-01), Deane
patent: 3782663 (1974-01-01), Stevenson
patent: 3885255 (1975-05-01), Vorbach et al.
patent: 4310987 (1982-01-01), Chieffo
patent: 4501569 (1985-02-01), Clark, Jr. et al.
patent: 5533214 (1996-07-01), Graham

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