Umbrella with hollow staff and spring influenced canopy chords

Details Umbrella with hollow staff and spring influenced canopy chords Umbrella with hollow staff and spring influenced canopy chords

1989-11-28

1990-06-19

Raduazo, Henry E.

Tent, canopy, umbrella, or cane

Portable shelter

Framework

135 38, 135 25R, A45B 1900

Patent

active

049343947

ABSTRACT:
An umbrella comprising a staff, a canopy, and chords having their outer ends secured to the canopy margin and their inner ends slidable on the staff and being under the influence of a spring while the canopy is moved from folded position to open position and wherein the canopy is under tension when it is open and wherein the canopy, the chords, and a portion of the staff form a stabilizing triangular structure when the canopy is open.

REFERENCES:
patent: 1484367 (1924-02-01), Vincent
patent: 1769315 (1930-07-01), Schoenhard
patent: 2241389 (1941-05-01), Berman
patent: 2465140 (1949-03-01), Vila
patent: 2479250 (1949-08-01), Mote
patent: 3486514 (1969-12-01), Prescott
patent: 3683948 (1972-08-01), Cohen
patent: 3765433 (1973-10-01), Futamura et al.
patent: 4062369 (1977-12-01), Hermanson
patent: 4624275 (1986-11-01), Baldwin
patent: 4842003 (1989-06-01), Baldwin et al.

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