Self-opening and self-closing umbrella

Details Self-opening and self-closing umbrella Self-opening and self-closing umbrella

1990-01-03

1991-08-06

Raduazo, Henry E.

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

135 24, 135 40, A45B 2514

Patent

active

050368729

ABSTRACT:
An improved self-opening and self-closing umbrella including a canopy, a conventional self-opening and self-closing frame formed of ribs and a telescoping shaft, a handle and an auxiliary mechanism overcomes problems with a conventional self-opening and self-closing umbrella by means of the auxiliary mechanism which comprises a cylindrical tube fixed on the shaft, spring means provided over the shaft in the tube, a hollow push rod provided between the spring means and the handle, locking means provided between the shaft and the tube, two sleeves provided over the shaft and the tube respectively.
The auxiliary mechanism serves to help the umbrella open quickly and fully, close to a condition where the umbrella folds tightly and stands ready for opening again, get its shaft strengthened and be used as a walking stick conveniently.

REFERENCES:
patent: 3658077 (1972-04-01), Sato
patent: 4421133 (1983-12-01), Huang

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