Garden umbrella with solid wooden pole designed to operate with

Details Garden umbrella with solid wooden pole designed to operate with Garden umbrella with solid wooden pole designed to operate with

1990-08-16

1991-02-19

Scherbel, David A.

Tent, canopy, umbrella, or cane

Umbrella

Inflatable

135 20R, A45B 1100

Patent

active

049934457

ABSTRACT:
A solid wood pole garden umbrella is adapted to permit a hand crank and pulley system to slidably move a ribholder vertically along such wood pole for opening and closing the umbrella. A pulley wheel is mounted in the umbrella pole below its top portion, with one end of a pulley cord attached to the ribholder while the other end of the pulley cord extends through a narrow groove formed longitudinally along the side of the pole down to a lower pole portion where such pulley cord is operatively connected to the hand crank. The pulley cord is contained within the groove in the umbrella pole by a flexible plastic bead or rod which is snugly held or attached to the outer part of the groove to thereby provide a retainer for the pulley cord. The groove and retainer design enables the pulley and crank system to be employed in a solid wooden pole umbrella while maintaining the structural integrity of the pole and avoiding other designs where the pulley cord might interfere with the ribholder operation.

REFERENCES:
patent: 2661752 (1953-12-01), Kampf et al.
patent: 2782795 (1957-02-01), Small
patent: 2951492 (1960-09-01), Small
patent: 3129715 (1964-04-01), Militano
patent: 4291639, Burdick
patent: 4424824 (1984-01-01), Becher
patent: 4567907 (1986-02-01), Dubinsky
patent: 4718369 (1988-01-01), Pollard
patent: 4878509 (1989-11-01), Tung
patent: 4921555 (1990-05-01), Skiff

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