Manual/automatic dual-purpose umbrella structure

Details Manual/automatic dual-purpose umbrella structure Manual/automatic dual-purpose umbrella structure

1988-01-11

1989-05-02

Bell, J. Karl

Tent, canopy, umbrella, or cane

Umbrella

Self-opening and closing

135 24, A45B 2516

Patent

active

048258881

ABSTRACT:
A manual/automatic dual-purposed umbrella structure comprising a handle, a stationary tube, an inner tube, an outer tube and a top tube. The handle has two buttons which respectively control a pushing rod and a hook portion to fix or loosen the outer tube. The inner tube and the top tube are separately passed into the outer tube from the top and the bottom thereof. The top tube and the stationary tube each respectively comprises a hook hole used for hooking a hook rod installed on the outer tube. Two springs are respectively set on the inner tube and the top tube, the elastic forces thereof forcing the umbrella frame to be opened or closed.

REFERENCES:
patent: 3856030 (1974-12-01), Sato
patent: 3906970 (1975-09-01), Saito et al.
patent: 4421133 (1983-12-01), Huang
patent: 4534374 (1985-08-01), Day

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