Tent – canopy – umbrella – or cane – Umbrella – Self-opening and closing
Patent
1996-08-13
1997-05-06
Mai, Lanna
Tent, canopy, umbrella, or cane
Umbrella
Self-opening and closing
135 24, A45B 2514
Patent
active
056261608
ABSTRACT:
An umbrella includes a control device capable of actuating an upward movement of the umbrella opening spring located in the shaft so as to bring about the automatic opening of the umbrella. The elastic elements regulating the closing of the umbrella are compressed such that the lower rib holder is in the state of being pulled by two pull cords so as to keep the umbrella in its open position. When the control button of the control device is pressed for the second time, a control member regulating the closing of the umbrella is actuated to bring about the expansion of the umbrella closing elastic elements so as to cause the downward travel of the lower rib holder to result in the closing of the umbrella.
REFERENCES:
patent: 250942 (1881-12-01), Mihiere
patent: 680661 (1901-08-01), Hunt
patent: 4424824 (1984-01-01), Becher
patent: 4567907 (1986-02-01), Dubinsky
patent: 4807655 (1989-02-01), Robertson
patent: 4928718 (1990-05-01), Apple
patent: 5144969 (1992-09-01), Chan et al.
patent: 5174319 (1992-12-01), Chou et al.
patent: 5178174 (1993-01-01), Wu
patent: 5492140 (1996-02-01), Lio et al.
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