Umbrella with mechanism for automatic opening or closing

Details Umbrella with mechanism for automatic opening or closing Umbrella with mechanism for automatic opening or closing

2008-05-30

2010-06-15

Dunn, David (Department: 3636)

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

Reexamination Certificate

active

07735498

ABSTRACT:
An umbrella includes a control mechanism comprising a hollow cylinder, a control block, a press mechanism, a push member, and an actuation block; a shank assembly comprising a support tube, first and second sliding tubes, and a resilient member; a link assembly comprising a pulley mechanism, a main spring, a rope, and a link; a runner and top assembly comprising a runner having peripheral slots wherein one of the slots is secured to the rope, and a hub secured to the cylindrical section and having peripheral slots; and a rib and stretcher assembly comprising ribs, stretchers, and auxiliary spring and rod combinations. Umbrella can be opened by pressing the push button with the main spring being expanded or closed by pressing the push button again with the auxiliary springs being compressed. After closing the umbrella, the main spring can be compressed by urging against a hard object.

REFERENCES:
patent: 5141010 (1992-08-01), Muller et al.
patent: 7588041 (2009-09-01), Huang
patent: 2002/0157694 (2002-10-01), Chen
patent: 2004/0020523 (2004-02-01), Lin et al.
patent: 2004/0200516 (2004-10-01), Ko

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