Longer effective automatic umbrella

Details Longer effective automatic umbrella Longer effective automatic umbrella

1992-06-17

1992-12-29

Chilcot, Jr., Richard E.

Tent, canopy, umbrella, or cane

Umbrella

Mechanically operated

135 24, 135 254, A45B 1100

Patent

active

051743191

ABSTRACT:
A longer effective automatic umbrella comprising mainly a tubular shank provided with an upper pulley therein; a cylinder at top end of the shank for receiving an umbrella opening spring; a handle at lower end of the shank, having upper and lower clamps and a middle pulley; an actuating mechanism comprising a pair of springs co-extending through the lower and upper clamps and at most up to the upper pulley to accumulate the energy; and an actuator to actuate and release the upper and lower clamps, respectively, for controlling the operation of opening and closing the umbrella.

REFERENCES:
patent: 534058 (1895-02-01), Ackermann et al.
patent: 680661 (1901-08-01), Hunt
patent: 3129715 (1964-04-01), Militano et al.
patent: 3175568 (1965-03-01), Kafka
patent: 3801809 (1974-04-01), Slade
patent: 4928718 (1990-05-01), Apple
patent: 5029596 (1991-07-01), Tung
patent: 5078165 (1992-01-01), Wu
patent: 5088512 (1992-02-01), Chou et al.

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