Tent – canopy – umbrella – or cane – Umbrella – Mechanically operated
Patent
1998-09-16
2000-10-10
Friedman, Carl D.
Tent, canopy, umbrella, or cane
Umbrella
Mechanically operated
135 22, A45B 2512, A45B 2514, A45B 1900
Patent
active
061291013
ABSTRACT:
A garden umbrella of the generally large size having a ribholder runner notch adapted for movement along a hollow umbrella pole for operating the canopy ribs to open and close the umbrella canopy. A pulley wheel is mounted in the umbrella pole below its top portion, with one end of a pulley cord being attached to the ribholder runner notch while the other end of the pulley cord extends down through the hollow pole where it connects to a ballast weight. The ballast weight is adapted to travel vertically in the pole in synchronism with movement of the runner notch. The weight of the ballast weight and its pulley arrangement is selected to provide a uniform ballast force and a constant control which facilitates the opening and closing of the umbrella. A second pulley cord can be attached at one end to the runner notch while such cord extends around a second pulley wheel to a handle attached at its other end. The umbrella can be open by pulling down on the pulley cord handle, or by simply lifting the end of one rib to above shoulder height, or by raising the runner notch until the umbrella is fully open. During this opening operation, as the ballast weight is lowered, it provides a uniform and constant upward force on the runner notch which assists in opening the umbrella, thereby substantially reducing the force otherwise required of the umbrella operator. The umbrella is closed by simply pulling down on one rib, or by lowering the runner notch until the umbrella is closed.
REFERENCES:
patent: Re24477 (1958-03-01), Small
patent: 321722 (1885-07-01), Herron
patent: 4011881 (1977-03-01), Becher
patent: 4567907 (1986-02-01), Dubinsky
patent: 4992556 (1991-02-01), Dubinsky
patent: 5213122 (1993-05-01), Grady, II
patent: 5640984 (1997-06-01), Dubinsky
patent: 5711332 (1998-01-01), Apple
Friedman Carl D.
Wilkens Kevin D.
Young, Esq. Philip
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