Multiple-fold windproof umbrella for preventing sagging of umbre

Details Multiple-fold windproof umbrella for preventing sagging of umbre Multiple-fold windproof umbrella for preventing sagging of umbre

1999-09-28

2000-03-21

Friedman, Carl D.

Tent, canopy, umbrella, or cane

Umbrella

Cover or lining feature

135 32, 135 29, 135 2531, A45B 2520

Patent

active

060390638

ABSTRACT:
A multiple-fold windproof umbrella includes: a central shaft having a rib assembly pivotally secured to the central shaft, a lower cloth having an anti-sagging band fastened on an upper periphery of the lower cloth and secured to the rib assembly, an upper cloth secured to the central shaft and juxtapositionally retained above the lower cloth, and a plurality of control valves each formed between the upper cloth and the lower cloth secured on the rib assembly, with the valves opened for escaping a strong wind blowing into the umbrella cloths; and automatically restoring the upper cloth downwardly for closing the opening between the upper and lower cloths of the umbrella after the escape of wind; with the anti-sagging band provided on the lower cloth automatically tensioning the upper periphery of the lower cloth for preventing the sagging of the lower cloth and for enhancing a smooth folding and unfolding of the umbrella.

REFERENCES:
patent: 212457 (1879-02-01), Girbardt
patent: 1027426 (1912-05-01), McClellaw
patent: 1652667 (1927-12-01), Greenberg
patent: 3960162 (1976-06-01), Noel
patent: 4794939 (1989-01-01), Okuda
patent: 4865063 (1989-09-01), Williams
patent: 4979534 (1990-12-01), Johnson et al.
patent: 5078166 (1992-01-01), Lee
patent: 5115827 (1992-05-01), Lee
patent: 5601103 (1997-02-01), Dubinsky

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