Umbrella frame

Details Umbrella frame Umbrella frame

1996-10-21

1997-08-12

Mai, Lanna

Tent, canopy, umbrella, or cane

Umbrella

135 29, 135 32, A45B 300

Patent

active

056555571

ABSTRACT:
An umbrella frame comprises a plurality of main ribs attached to a slidable moving plate assembly by a plurality of support ribs. A plurality of stabilizing ribs are secured to the support ribs. The stabilizing ribs are further secured to a stationary plate assembly in a manner which permits the main ribs to open by gravity thus resulting in an umbrella frame whose relaxed state is open. An upper plate assembly is secured to the umbrella frame pole by an energy absorbing and dissipating means to stabilize the umbrella in windy conditions.

REFERENCES:
patent: 448203 (1891-03-01), Brice
patent: 1088743 (1914-03-01), Swinland
patent: 1095362 (1914-05-01), Swinland
patent: 1555568 (1925-09-01), Gustafson
patent: 2132648 (1938-10-01), Rosenberg et al.
patent: 2762383 (1956-09-01), Wittman
patent: 2796073 (1957-06-01), Wittman
patent: 5085239 (1992-02-01), Chin-Hung et al.
patent: 5271196 (1993-12-01), Fanti
patent: 5273062 (1993-12-01), Mozdzanowski

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