Umbrella

Details Umbrella Umbrella

1989-07-28

1990-05-29

Scherbel, David A.

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

135 20M, A45B 2514, A45B 2516

Patent

active

049287184

ABSTRACT:
An automatic umbrella includes a central post, a canopy assembly, and a spring and linkage mechanism which causes the umbrella to open when desired. There is also commonly a feature used for securing the umbrella in the closed position.

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patent: 4567907 (1986-02-01), Dubinsky
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patent: 4807655 (1989-02-01), Robertson

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