Multiple-fold automatic umbrella

Details Multiple-fold automatic umbrella Multiple-fold automatic umbrella

1993-11-08

1995-02-21

Friedman, Carl D.

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

135 203, 135 251, A45B 2514

Patent

active

053906861

ABSTRACT:
An automatic umbrella includes: a central shaft, a rib assembly for securing an umbrella cloth thereon, an opening spring for resiliently opening the umbrella, a plurality of closing springs for resiliently closing the umbrella, and a control device for controlling the opening or closing of the umbrella by depressing an upper portion or a lower portion of a seesaw button of the control device, the central shaft having a plurality of telescopic tubes telescopically retractible with one another and the rib assembly having a plurality of ribs, which can be folded to greatly shorten a total length of a closed umbrella adapted for convenient carrying or storing purposes.

REFERENCES:
patent: 3658076 (1972-04-01), Yasuda
patent: 3687146 (1972-08-01), Seitel
patent: 4548222 (1985-10-01), Day
patent: 4941494 (1990-07-01), Wu
patent: 5060684 (1991-10-01), Wu
patent: 5078165 (1992-01-01), Wu
patent: 5144969 (1992-09-01), Chou et al.
patent: 5161562 (1992-11-01), Wu
patent: 5178174 (1993-01-01), Wu
patent: 5267583 (1993-12-01), Wu

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