Multiple-fold automatic umbrella for safe operation

Details Multiple-fold automatic umbrella for safe operation Multiple-fold automatic umbrella for safe operation

1995-01-09

1995-08-15

Mai, Lanna

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

135 203, 135 254, A45B 2514

Patent

active

054410657

ABSTRACT:
An automatic umbrella includes: a central shaft, a rib assembly for securing an umbrella cloth thereon, an opening spring for resiliently opening the umbrella, a plurality of closing springs for resiliently closing the umbrella, and a control device for controlling the opening or closing of the umbrella by depressing an upper portion or a lower portion of a push button of the control device with the control device including an anti-false operation safety device having a pair of lugs protruding downwardly from a collar resiliently held in a grip of the central shaft for normally shielding a depression of the lower portion of the push button for preventing an unexpected closing operation of an umbrella which is not fully opened after depressing the upper portion of the push button.

REFERENCES:
patent: 4823821 (1989-04-01), Day
patent: 4936332 (1990-06-01), Wu
patent: 4941494 (1990-07-01), Wu
patent: 4989625 (1991-02-01), Wu
patent: 5178174 (1993-01-01), Wu
patent: 5390686 (1995-02-01), Lin et al.

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