Tent – canopy – umbrella – or cane – Umbrella – Rib and stretcher joints
Patent
1998-06-22
2000-08-15
Aubrey, Beth A.
Tent, canopy, umbrella, or cane
Umbrella
Rib and stretcher joints
135 32, A45B 2500
Patent
active
061020583
ABSTRACT:
A pivotal-coupling device is provided for a collapsible umbrella frame structure, which allows the pivotal coupling between the main shaft and the framing rib to be achieved without having to use supersonic wave bonder, thus making the assembly work more easy to carry out and the manufacturing cost reduced. It also allows the assembly work to be carried out manually without having to use machine tools or welding means. The pivotal-coupling device includes a first linking member affixed to the main shaft; a second linking member affixed to the framing rib, and a pivotal pin for providing a pivotal coupling of the first linking member to the second linking member, allowing the main shaft to be pivotally coupled to the framing rib. Compared to the prior art, this pivotal-coupling device is considerably simpler in structure that allows it to be formed easily through machining and further allows the assembly work to be easily carry out by hand without having to use machine tools or welding means.
REFERENCES:
patent: 5372155 (1994-12-01), You
patent: 5715853 (1998-02-01), Lin
patent: 5746235 (1998-05-01), Lin
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