Windproof umbrella having compact folded structure

Details Windproof umbrella having compact folded structure Windproof umbrella having compact folded structure

1999-10-04

2001-02-13

Cuomo, Peter M. (Department: 3636)

Tent, canopy, umbrella, or cane

Umbrella

Auxiliary frame brace

C135S025100

Reexamination Certificate

active

06186157

ABSTRACT:

BACKGROUND OF THE INVENTION
U.S. Pat. No. 5,794,637 disclosed a non flip umbrella including a plurality of reinforcing strings (21) each connected between the sliding catch (14) and each rib (13), and a plurality of suspenders (22) each fastened between each reinforcing string (21) and each rib (13) to prevent the reinforcing strings (21) from drooping out of the umbrella when folded.
However, such a prior art still has the following drawbacks:
1. Each suspender (22) should require a pair of upper and lower rings (26, 26
a
) to be held in position between the rib (13) and the string (21), greatly increasing the installation inconvenience and the production cost thereof.
2. Even the suspenders (22) are provided for preventing the drooping of the strings (21) from the folded umbrella (FIG. 6 of the prior art), the strings (21) are still loosened, possibly causing tangling when folding or unfolding the umbrella.
3. If the suspender is modified to be a suspending spring (31) as shown in FIG. 4 of the prior art, there may be 6~8 springs (31) totally for an umbrella, being heavy and inconvenient for portable uses.
4. Around the central pole (11), the inner end of each string (21) and brace (19) should be pivotally secured to the ring (18) which is positioned at such a narrow crowded space, thereby increasing the assembly complexity and inconvenience. If an additional ring member (28) is provided for connecting the string (29) as shown in FIG. 4 of the prior art, the assembly cost will then be increased.
The present invention has found the drawbacks of the prior art and invented the present windproof umbrella having compact folded structure.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a windproof umbrella including: a central shaft, a rib assembly having at least a top rib and a stretcher rib pivotally secured to the central shaft for securing an umbrella cloth thereon, a pulling rod secured on the stretcher rib and a pulling rope connected between the pulling rod and the top rib (or an outer rib portion of the rib assembly), with the pulling rope and pulling rod fastening the top rib (or the outer rib portion of the rib assembly) towards the central shaft for preventing inversion of the umbrella cloth and the rib assembly when opening the umbrella, whereby upon folding of the umbrella, the pulling rod and pulling rope will be tensely folded within the rib assembly without loosening for forming a compact folded umbrella.


REFERENCES:
patent: 3032047 (1962-05-01), Wendorf
patent: 3930514 (1976-01-01), Wu
patent: 4407317 (1983-10-01), Crandall
patent: 5213123 (1993-05-01), Whitfield
patent: 5794637 (1998-08-01), Figueroa
patent: 5941261 (1999-08-01), Kouvaras et al.
patent: 6006770 (1999-12-01), Lin et al.
patent: 6058952 (2000-05-01), Lin et al.

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