Automatically collapsible umbrellas

Details Automatically collapsible umbrellas Automatically collapsible umbrellas

1996-08-16

1997-05-27

Mai, Lanna

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

135 28, 135 254, A45B 2514

Patent

active

056322909

ABSTRACT:
The present invention relates to an automatically collapsible umbrella, and especially to an improved mechanism that governs the opening and collapsing of an automatic umbrella. With the inventive control mechanism that comprises two innovative lock plates and a specially designed runner, an automatic umbrella can be more precisely manipulated without malfunction or be inadvertently triggered.

REFERENCES:
patent: 3424180 (1969-01-01), Andolfi
patent: 4573487 (1986-03-01), Schultes et al.
patent: 5178174 (1993-01-01), Wu
patent: 5232004 (1993-08-01), Wu
patent: 5275186 (1994-01-01), Liu
patent: 5492140 (1996-02-01), Lin et al.
patent: 5505222 (1996-04-01), Lin et al.

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