Strut structure of a folding umbrella having a seamless umbrella

Details Strut structure of a folding umbrella having a seamless umbrella Strut structure of a folding umbrella having a seamless umbrella

1993-10-12

1994-04-26

Friedman, Carl D.

Tent, canopy, umbrella, or cane

Umbrella

Cover or lining feature

135 31, 135 3341, A45B 2518

Patent

active

053057724

ABSTRACT:
The invention relates to a strut structure of a folding umbrella having a seamless umbrella cover, which structure makes use of an integrally molded fastener with an open groove provided on the hollow cylindrical body thereof to fix the umbrella cover on the strut. The outside diameter of the strut is slightly smaller than the hole diameter of the fastener and slightly larger than the width of the open groove and so the fastener can be directly pushed inwards from the outside to clamp the strut as well as the umbrella cover, forming a firm engagement. As a result, when the folding umbrella is closed, the umbrella cover made of a single cloth folds inwardly as well for storage.

REFERENCES:
patent: 588773 (1897-08-01), Mitchell
patent: 2087756 (1937-07-01), Farkas
patent: 2125078 (1938-07-01), Maxwell, Jr.
patent: 2453270 (1948-11-01), Russell
patent: 5063953 (1991-11-01), Wu
patent: 5226438 (1993-07-01), Dubinsky

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