Tent – canopy – umbrella – or cane – Umbrella – Rib and stretcher joints
Patent
1999-04-05
2000-12-26
Canfield, Robert
Tent, canopy, umbrella, or cane
Umbrella
Rib and stretcher joints
135 253, 135 31, 135 32, A45B 1900, A45B 2502
Patent
active
061643033
ABSTRACT:
A rib assembly for umbrella includes: at least a top rib pivotally secured to an upper notch fixed on a top portion of a central shaft, a stretcher rib pivotally connected with the top rib and pivotally secured to a runner slidably held on the shaft an intermediate connecting rib pivotally connected to the top rib through an intermediate connecting rib, and a tail rib pivotally connected to the intermediate rib; with the top rib formed as a slim elongate rod having an outermost end of the top rib formed as a flat thinning end portion pivotally connected with a pair of narrowing lugs centripetally pressed from two side walls of the U-shaped groove of the stretcher rib; and having an outer portion of the top rib formed as a flat thinning portion for pivotally connecting an inner end of the intermediate connecting rib, thereby forming a slim rib assembly for minimizing a folding volume of the rib assembly when closing the umbrella adapted for making a slim mini pocketable folding umbrella.
REFERENCES:
patent: 579403 (1897-03-01), Meyer
patent: 874799 (1907-12-01), Schroeder
patent: 1195635 (1916-08-01), Altshuler et al.
patent: 1405824 (1922-02-01), Evans
patent: 1559332 (1925-10-01), Lutz et al.
patent: 4007752 (1977-02-01), Weber
Chang Jung-Jen
Lin Chung-Kuang
Canfield Robert
Fu Tai Umbrella Works Ltd.
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