Multiple-fold automatic umbrella with penta-fold rope

Details Multiple-fold automatic umbrella with penta-fold rope Multiple-fold automatic umbrella with penta-fold rope

2000-06-02

2002-03-26

Friedman, Carl D. (Department: 3635)

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

C135S025100, C135S025300, C135S028000, C135S040000

Reexamination Certificate

active

06360759

ABSTRACT:

BACKGROUND OF THE INVENTION
U.S. Patent application entitled “Automatic Penta-fold Umbrella” filed by the same inventors of this application on Dec. 15, 1998 with a Ser. No. of: 09/215,635 disclosed an automatic umbrella having penta-fold central shaft (
1
) consisting of five tubes (
11
,
13
,
13
a
,
13
b
,
14
) and penta-fold rib assembly (
2
) for obtaining a shortened length of the shaft (
1
) when folded.
However, it still has a large diameter for the folded tubes of the shaft (
1
) when closing and folding the umbrella of the prior application due to the total thickness summed up by the five tubes (
11
,
13
,
13
a
,
13
b
,
14
) of the shaft (
1
). It is therefore difficult to make a “slim” umbrella after being folded.
The present inventors have found that a penta-fold rope mechanism may be provided for forming a slim automatic umbrella having quadruple-fold central shaft in accordance with the present invention.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a multiple-fold automatic umbrella including a penta-fold rope having its inner rope end secured with a locking head locked in a grip of a central shaft and defining a first rope section of the penta-fold rope from the locking head through an interior of the shaft to an upper guiding roller rotatably mounted in an upper portion of the shaft; a second rope section of the penta-fold rope from the upper guiding roller to a first lower guiding roller rotatably mounted on a lower runner slidably held in the shaft; a third rope section of the rope from the first lower guiding roller towards at least an uppermost guiding roller rotatably mounted in a top portion of the shaft; a fourth rope section from the uppermost guiding roller towards a second lower guiding roller rotatably mounted on the lower runner opposite to the first guiding roller; and a fifth rope section from the second lower guiding roller towards an outer rope end secured to an upper notch formed on the top of the shaft, thereby providing a rope dynamically balanced on opposite sides of the shaft for enhancing a smooth opening and closing operation of the umbrella.


REFERENCES:
patent: 4986294 (1991-01-01), Wu
patent: 5267583 (1993-12-01), Wu
patent: 5617889 (1997-04-01), Wu
patent: 5626161 (1997-05-01), Lin et al.
patent: 5791359 (1998-08-01), Lin et al.
patent: 5803102 (1998-09-01), Ko
patent: 5868151 (1999-02-01), Kuo
patent: 6145522 (2000-11-01), Ko
patent: 6170498 (2001-01-01), Wu
patent: 6173722 (2001-01-01), Ko

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