Ratchet type safety claw clutch

Details Ratchet type safety claw clutch Ratchet type safety claw clutch

1974-10-03

1976-07-06

Scott, Samuel

192 clutches and power-stop control

Elements

Engaging surfaces

192114T, 64 9R, 64 29, F16D 1100

Patent

active

039677117

ABSTRACT:
A safety claw clutch wherein the adjacent end faces of driving and driven rotary clutch elements have alternating claws and recesses and the driven clutch element is biased axially against the driving clutch element by a spring. The bottom surfaces in the recesses of the clutch elements make a first acute angle with a plane which is normal to the common axis of the clutch elements and the front surfaces of claws of the driving clutch element (and hence the rear surfaces of claws of the driven clutch element) make with such plane a second acute angle which is larger than the first acute angle. The top surfaces of the claws are parallel to the respective bottom surfaces. Such configuration of the claws and recesses insures that the force which tends to reengage the clutch elements when the driving clutch element rotates relative to the driven clutch element upon disengagement of the clutch is a small fraction of the force which normally maintains the claws of the driving clutch element in the recesses of the driven clutch element and vice versa because the claws of the driving clutch element cannot enter the recesses of the driven clutch element.

REFERENCES:
patent: 2398570 (1946-04-01), Wildhaber
patent: 3834252 (1974-09-01), Abell et al.

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