Umbrella having reinforced top rib

Details Umbrella having reinforced top rib Umbrella having reinforced top rib

1991-01-29

1992-06-16

Scherbel, David A.

Tent, canopy, umbrella, or cane

Umbrella

Ribs and stretchers

135 32, 403 85, A45B 2500

Patent

active

051217643

ABSTRACT:
An umbrella includes a plurality of top ribs pivotally secured to a notch formed on an upper end of a central shaft and a plurality of stretcher ribs each pivotally secured between each top rib and a runner slidably held on the central shaft, each top rib being embedded with a reinforcing core rod for strengthening the top rib in order to resist an external force acting upon an umbrella cloth secured on the top ribs.

REFERENCES:
patent: 973155 (1910-10-01), Woollett
patent: 988956 (1911-04-01), Whittaker
patent: 1518927 (1924-12-01), Hnanicek
patent: 2167860 (1939-08-01), Wright
patent: 2889841 (1959-06-01), Kampf

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