Automatic device for opening or closing a multi-folding...

Details Automatic device for opening or closing a multi-folding... Automatic device for opening or closing a multi-folding...

2006-01-31

2008-12-09

Dunn, David (Department: 3636)

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

C135S024000

Reexamination Certificate

active

07461666

ABSTRACT:
An automatic device for opening or closing multi-folding umbrella is provided, which comprises a umbrella shaft, a control handle, an upper and a lower nest, a rib assembly, a spring for closing, a spring for opening and a dragline in the shaft; a button with a reset spring and a snap convex is installed on the control handle and a rocker with a pushing spring can lock and release the step-cone; when the umbrella is closed, the snap convex of the button falls into the locking recess on the lower part of the upper tube; press the button, and it moves inwards but does not touch the rocker, the snap convex departs from the locking recess on the exterior wall of the upper tube and the umbrella is unfurled under the action of the spring for opening; press the button again, the step-cone is released, the spring for closing pulls the rib assembly to push downwards the lower nest back to the state of closing umbrella. The invented device increases the length space of the shaft to hold the spring for opening, therefore, it is especially suitable for the four-folding or five-folding automatic open and close umbrella.

REFERENCES:
patent: 5823214 (1998-10-01), Seidel
patent: 6170498 (2001-01-01), Wu
patent: 6684893 (2004-02-01), Kuo
patent: 2003/0000558 (2003-01-01), Chou
patent: 2003/0168092 (2003-09-01), Chou
patent: 01207334.2 (2001-03-01), None

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