Gale-proof umbrella with canopy inverting and restoring mechanis

Details Gale-proof umbrella with canopy inverting and restoring mechanis Gale-proof umbrella with canopy inverting and restoring mechanis

1991-12-30

1993-09-28

Friedman, Carl D.

Tent, canopy, umbrella, or cane

Umbrella

Rib and stretcher joints

135 31, A45B 2500

Patent

active

052479560

ABSTRACT:
A folding umbrella for use in extremely gusty conditions includes spreaders extending between canopy supporting ribs and the umbrella pole which are longitudinally extensible against the action of a spring. The ribs and the spreader are linked to the pole for pivotal movement through one hundred and eighty degrees permitting a strong gust of wind to invert the canopy to extend with the spreaders above the pole thereby spilling the wind. The spreaders include cylinders formed by tubes receiving a helical compression spring and one end of each spreader is formed as a piston rod extending through the spring and having a head at the other end trapping the spring against an end of the tube.

REFERENCES:
patent: 864945 (1907-09-01), Bigelow
patent: 874648 (1907-12-01), Wolfe
patent: 1429828 (1922-09-01), Baker
patent: 2788792 (1957-04-01), Koller
patent: 3277909 (1966-10-01), Militano
patent: 3643673 (1972-02-01), Weber
patent: 5020557 (1991-06-01), Apple

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