Structure of safety umbrella

Details Structure of safety umbrella Structure of safety umbrella

1991-02-05

1992-02-04

Scherbel, David A.

Tent, canopy, umbrella, or cane

Umbrella

Collapsible in length

135 28, 135 31, 135 3341, A45B 1900

Patent

active

050852396

ABSTRACT:
An umbrella, having a cover stretched over a plastic folding radial frame which comprises upper, intermediate and lower nest plates respectively mounted on a main shaft for securing a plurality of ribs. The nest plates are identical in structure, each comprised an upper circular member having a plurality of pawls and retaining holes at the bottom respectively engaged with a plurality of retaining holes and pawls on the top of a lower circular member for securing the ribs. The cover comprises a plurality of fastening caps at the corners around its periphery and a plurality of snap fastening elements on each radial line thereof for securing the ribs. Because all the parts are made of plastic material, the umbrella is not electrically conductive and can protect against lightning.

REFERENCES:
patent: 886426 (1908-05-01), Shivers
patent: 1006240 (1911-10-01), Lewis
patent: 1082645 (1913-12-01), Myers
patent: 3252468 (1966-05-01), Militano
patent: 3643673 (1972-02-01), Weber
patent: 4368749 (1983-01-01), Lindler et al.
patent: 4823821 (1989-04-01), Day

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