Improved frames of a folded umbrella

Details Improved frames of a folded umbrella Improved frames of a folded umbrella

1993-05-04

1994-03-29

Friedman, Carl D.

Tent, canopy, umbrella, or cane

Umbrella

Collapsible in length

135 31, A45B 1900

Patent

active

052975720

ABSTRACT:
A folding umbrella frame is provided which includes an improved frame linkage having a second stick with a recess formed within it and an inclined outer end pivotally secured to a fourth rib member. A first stick member is coupled to a first rib member and includes a second end which is inclined and is pivotally secured to a third rib member. The first rib member has an end which is inclined for pivotal coupling to a central section of a second rib member. The inclined ends of the first rib member, the first stick member and the second stick member reduces the force required to open and close the folding umbrella while the recess receives an end of the first rib member to reduce the volume of the umbrella when in a closed state.

REFERENCES:
patent: 3893467 (1975-07-01), Wingen
patent: 3896833 (1975-07-01), Weber
patent: 3901257 (1975-08-01), Schafer
patent: 4030515 (1977-06-01), Weber
patent: 4077421 (1978-03-01), Schultes et al.
patent: 5048550 (1991-09-01), Su
patent: 5063953 (1991-11-01), Wu

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