Reliably controllable windproof umbrella

Details Reliably controllable windproof umbrella Reliably controllable windproof umbrella

1998-08-03

2000-02-15

Friedman, Carl D.

Tent, canopy, umbrella, or cane

Umbrella

Cover or lining feature

135 32, 135 31, 135 29, A45B 2526

Patent

active

060241098

ABSTRACT:
A windproof umbrella includes: an upper cloth secured on an upper rib pivotally connected to a central shaft of the umbrella, a lower cloth secured on a lower rib pivotally connected to the central shaft and having a central opening circumferentially formed in a top portion of the lower cloth around the central shaft, each upper cloth provided with a control valve thereon for resiliently normally closing an aperture between the upper cloth and the lower cloth; and upon blowing of strong wind on the lower and upper cloths, the control valve will be opened to release the wind for preventing inversion of the umbrella.

REFERENCES:
patent: 1027426 (1912-05-01), McClellan
patent: 3960162 (1976-06-01), Noel
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
patent: 5640984 (1997-06-01), Dubunsky

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