Release device of double-shade umbrella

Details Release device of double-shade umbrella Release device of double-shade umbrella

1983-09-21

1984-10-30

Hafer, Robert A.

Tent, canopy, umbrella, or cane

Umbrella

Inflatable

135 24, A45B 1900, A45B 2514

Patent

active

044795041

ABSTRACT:
This invention relates a release device of double-shade umbrella specially for opening simultaneously the two sets of ribs of a paramours's umbrella by pressing a T plate in the umbrella handle and forcing the two spring retainers in the umbrella canes to release the outer telescopic tubes of the canes, and characterized by combining two separate release devices in one with a T plate aligned with two retainers so as to unfold two shades simultaneously with one hand.

REFERENCES:
patent: 256308 (1882-04-01), Forster
patent: 3464431 (1969-09-01), Loeffler
patent: 4144900 (1979-03-01), Kinski
patent: 4274429 (1981-06-01), Kinski
patent: 4418707 (1983-12-01), Wu
patent: 4421133 (1983-12-01), Huang

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