Collapsible umbrella

Details Collapsible umbrella Collapsible umbrella

1993-08-27

1994-08-16

Friedman, Carl D.

Tent, canopy, umbrella, or cane

Umbrella

Collapsible in length

135 29, 135 31, A45B 1900

Patent

active

053377702

ABSTRACT:
The invention relates to a collapsible umbrella having a canopy frame which s collapsible in an at least four-fold manner and a stick (1) which is telescopic in an at least four-stage manner as well as a slide (2) displaceable on this said stick for canopy opening and closing, the canopy linkage comprising a combination of link parallelograms (I, II, III) or lever formations, which is formed from a combination of hollow, U-shaped, flat and round-profiled rod material. In order to make the folded-together umbrella as compact as possible in its cross-section, the invention provides that all the link parallelograms insert into one another so completely, with optimum utilization of the available cavities of the U-profiled canopy rods, that there are no unused empty spaces in the folding bends (K1, K2, K3, K4) of the folded-together formation (FIG. 1).

REFERENCES:
patent: 2156984 (1939-05-01), Haupt
patent: 3901257 (1975-08-01), Schafer
patent: 4739783 (1988-04-01), Yang
patent: 5063953 (1991-11-01), Wu
patent: 5235998 (1993-08-01), Liu

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