Linkage device for an umbrella

Details Linkage device for an umbrella Linkage device for an umbrella

1997-04-14

1998-05-05

Mai, Lanna

Tent, canopy, umbrella, or cane

Umbrella

Rib and stretcher joints

135 32, A45B 2500

Patent

active

057462356

ABSTRACT:
A linkage device for an umbrella includes a pivot and a joint. A frame having an opening defined therein is integrally formed on a periphery of the pivot. A deformable leaf is provided to the joint and has a configuration to mate with a recess defined in the joint. Furthermore, a pivot rod is provided to the joint and functions as a pivot when the stretchers and the ribs are expand or folded. Therefore, when a portion of the frame is received within the joint, the deformable leaf is able to securely enclose the portion of the frame within the joint.

REFERENCES:
patent: 4368749 (1983-01-01), Lindler et al.
patent: 5121764 (1992-06-01), Wu
patent: 5193566 (1993-03-01), Chen
patent: 5323801 (1994-06-01), Kuo
patent: 5372155 (1994-12-01), You

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