Positive engagement spring clutch for concentric rotating drives

Details Positive engagement spring clutch for concentric rotating drives Positive engagement spring clutch for concentric rotating drives

1993-05-26

1996-04-16

Lorence, Richard M.

192 clutches and power-stop control

Clutches

Transversely engaged

192 892, 192 8921, 192108, F16D 1116

Patent

active

055073778

ABSTRACT:
Inserted in a hollow drive cylinder, a simple push-pull shaft is connected to a cup, open at one end and having a rigid rim and a transverse rod across the open end of the cup. Captured between the transverse rod and the closed end of the cup is a V-shaped spring. Two hardened steel pins on the outside ends of the V-shaped spring inserted through holes in a drive cylinder are inserted into and retracted out of engagement with openings on an interior surface of a concentrically encircling drive ring in response to expansions and compressions of the spring caused by the rim of the cup moved by the push-pull shaft. The push-pull shaft is moved by a push-pull knob outside the cylinder or cable activating knob remote therefrom. The rigid rim of the cup pushes on the sloping sides of the spring to compress the spring which then disengages the pins from the drive ring. Pulling back on the push-pull shaft withdraws the cup and releases the sides of the spring to allow the spring to expand and the the pins to engage the drive ring. The drive cylinder may drive the drive ring or the drive ring may drive the drive cylinder. A pair of concentric cylinders may also mutually drive each other.

REFERENCES:
patent: 695769 (1902-03-01), Turnbull
patent: 1497133 (1924-06-01), Cot
patent: 2063426 (1936-12-01), Galvin et al.
patent: 2828845 (1958-04-01), Thornton
patent: 5297670 (1994-03-01), Yamaguchi

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