Tent – canopy – umbrella – or cane – Umbrella – Self-opening and closing
Patent
1980-08-25
1982-09-14
Bell, J. Karl
Tent, canopy, umbrella, or cane
Umbrella
Self-opening and closing
135 71R, E04F 1010
Patent
active
043490409
ABSTRACT:
A swimming pool cover including a canopy supported by a foldable framework of support struts, the swimming pool cover being novel by including rotatable support struts so that, among other uses, selected segments of the swimming pool may be uncovered thereby allowing safe and convenient access for, use inspection, cleaning or repair.
REFERENCES:
patent: 706605 (1902-08-01), Slyder
patent: 2547770 (1951-04-01), Pelton
Bell J. Karl
Miller Richard L.
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