Collapsible frame structure for self-opening umbrella

Details Collapsible frame structure for self-opening umbrella Collapsible frame structure for self-opening umbrella

1998-06-22

2000-06-20

Aubrey, Beth

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

135 28, 135 29, A45B 2516

Patent

active

060765402

ABSTRACT:
A durable collapsible frame structure is provided for umbrella with self-opening mechanism, which can make the pivotal coupling between the supporting ribs and the linkage beams highly firm and secure while nonetheless retaining the light-weighted quality of the supporting ribs. The collapsible frame structure is more durable than the prior art by using enforced light-weighted materials such as FRP to form the umbrella frame and steel bars to form the linkage beams. Therefore, the collapsible frame structure is longer in the life of use than the prior art.

REFERENCES:
patent: 3732881 (1973-05-01), Hirai
patent: 3746025 (1973-07-01), Murata
patent: 5472006 (1995-12-01), Kuo
patent: 5829462 (1998-11-01), Cho

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