Compactly molded rib means for multiple-fold umbrella

Details Compactly molded rib means for multiple-fold umbrella Compactly molded rib means for multiple-fold umbrella

1996-01-17

1996-09-10

Mai, Lanna

Tent, canopy, umbrella, or cane

Umbrella

Collapsible in length

135 31, A45B 1910

Patent

active

055536344

ABSTRACT:
A rib assembly for multiple-fold umbrella includes: a top rib as integrally formed by plastic molding process and pivotally secured to an upper notch of a central shaft and having an upper groove and a lower groove respectively recessed in an upper surface and a lower surface of the top rib, a stretcher rib pivotally secured to a lower runner slidably held on the central shaft and pivotally connected to the top rib, an intermediate rib as integrally formed by plastic molding process and pivotally connected between the top rib and a tail rib and having a web portion integrally formed on the intermediate rib for limiting a spring rib, with the spring rib slidably held in a groove recessed in the intermediate rib and pivotally connected between the tail rib and an auxiliary connecting rib pivotally secured between the stretcher rib and the intermediate rib, whereby upon folding of the rib assembly when closing an umbrella from its opening state, the stretcher rib and the auxiliary connecting rib will be received in the lower groove of the top rib and the intermediate rib and the spring rib will be received in the upper groove of the top rib to greatly minimize a folded volume of the closed umbrella for a convenient handling and storage.

REFERENCES:
patent: 1010089 (1911-11-01), Szabados
patent: 1469495 (1923-10-01), Bunker
patent: 1490924 (1924-04-01), Hartzell
patent: 4966180 (1990-10-01), Lai
patent: 5085239 (1992-02-01), Chin-Hung et al.
patent: 5267583 (1993-12-01), Wu
patent: 5390686 (1995-02-01), Lin et al.
patent: 5392799 (1995-02-01), Lai
patent: 5435331 (1995-07-01), Okuda

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