Firm automatic multi-sectional collapsible umbrella structure

Details Firm automatic multi-sectional collapsible umbrella structure Firm automatic multi-sectional collapsible umbrella structure

2007-08-28

2007-08-28

Yip, Winnie (Department: 3636)

Tent, canopy, umbrella, or cane

Umbrella

Runners and notches

C135S025100, C135S039000, C403S109100, C403S379200

Reexamination Certificate

active

10945954

ABSTRACT:
An umbrella includes a cover, a shaft with a multi-sectional structure, a notch, a runner, main ribs, stretchers, other coordinating multi-sectional ribs, or optionally, in addition, an auxiliary runner, a compression spring between the auxiliary runner and a plurality of stretching ribs. Around the notch is a plurality of pivotally disposed main ribs for supporting the cover, and around the runner is a plurality of pivotally disposed stretchers for supporting the main ribs. A locating tube is disposed below the notch which is pivotally connected to the main ribs. The locating tube has an upper end thereof fastened with the notch, and the auxiliary runner and the runner are accommodated around the locating tube, such that the runner is capable of firm up-and-down sliding movements on the locating tube, thereby steadily stretching the umbrella.

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