Automatic umbrella foldably retained by tip cap

Details Automatic umbrella foldably retained by tip cap Automatic umbrella foldably retained by tip cap

1990-09-10

1991-10-29

Scherbel, David A.

Tent, canopy, umbrella, or cane

Umbrella

Collapsible in length

135 24, 135 44, A45B 2300

Patent

active

050606840

ABSTRACT:
An automatic umbrella includes a plurality of ribs respectively pivotally secured to a plurality of ferrules respectively mounted or held on a telescopic central shaft, an opening tensioning spring formed in the central shaft for opening the umbrella, at least a retraction restoring spring for closing the umbrella, and a tip cap slidably mounted on a grip, in which the tip cap may be operated for depressing a biasing lever for disengaging a lower ferrule pivotally linked with the ribs for opening the umbrella, and may be further operated for depressing a sliding latch for releasing an elastic force of the opening tensioning spring to allow a restoring operation acted by the retraction restoring springs for closing the umbrella from its opening state.

REFERENCES:
patent: 1878428 (1932-09-01), Rose
patent: 3625236 (1971-12-01), Hayano
patent: 3658077 (1972-04-01), Sato
patent: 3856030 (1974-12-01), Sato
patent: 4548222 (1985-10-01), Day
patent: 4802499 (1989-02-01), Lisack
patent: 4936332 (1990-06-01), Wu

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