Automatic fold-up umbrella

Details Automatic fold-up umbrella Automatic fold-up umbrella

1998-09-28

2000-06-27

Stephan, Beth A.

Tent, canopy, umbrella, or cane

Umbrella

Combined

135 151, 135 332, 135 334, A45B 300

Patent

active

060794305

ABSTRACT:
An automatic fold-up umbrella for easier closing has a frame having an umbrella shaft and a plurality of radial ribs. A canopy supported on the radial ribs. Elastic bodies are sewn up into every other half peripheral edge portion of the canopy to be located between the rib and a folding line of a partial canopy along an intermediate portion between the neighboring ribs. Alternatively a shape-metal alloy is sewn into one of the partial canopies so that when the umbrella is closed, the canopy can be automatically, spirally or volutely rolled in to form a curved or spiral state from the folding lines.

REFERENCES:
patent: 4794939 (1989-01-01), Okuda
patent: 5150728 (1992-09-01), Stark

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