Silent ratchet

Details Silent ratchet Silent ratchet

1976-06-10

1977-12-20

Herrmann, Allan D.

192 clutches and power-stop control

Clutches

Automatic

81 63, F16D 4116

Patent

active

040636267

ABSTRACT:
A ratchet is provided in which a friction brake ring is employed to engage a pawl with the ratchet teeth in an annular ring or hinge extending from a ratchet tool handle. The friction brake ring carries the pawl into engagement when the tool handle is rotated in the direction in which it is desired to turn a workpiece. A spring within the ratchet returns the pawl to a position in which it is disengaged entirely when pressure on the tool handle in the rotational direction of engagement is released. Thus, the return of the tool handle before a subsequent engaging stroke is accomplished silently and without the characteristic clicking of the ratchet teeth of the hinge passing over the pawl.

REFERENCES:
patent: 2188846 (1940-01-01), Rueb
patent: 2981389 (1961-04-01), Kilness
patent: 3044591 (1962-07-01), Kilness
patent: 3369416 (1968-02-01), Kilness
patent: 3677102 (1972-07-01), Simonetta

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