Device for wear warning in a servo operated disc clutch

Details Device for wear warning in a servo operated disc clutch Device for wear warning in a servo operated disc clutch

1976-09-14

1978-04-18

Herrmann, Allan D.

192 clutches and power-stop control

Clutches

92 5R, 116 4, 116 67R, 116124D, 188 1A, F16D 6602, G08B 704

Patent

active

040846717

ABSTRACT:
A disc clutch servo mechanism cylinder has a signal bore extending from the cylinder working chamber to atmosphere. In normal operating state a pin seals this bore. The pin extends into the chamber and when the clutch is worn the piston will come close to the cylinder bottom and push the pin outwards. This movement causes the pin to open an air passage from the chamber to atmosphere, whereby an acoustic signal indicates clutch wear.

REFERENCES:
patent: 535264 (1895-03-01), Smith
patent: 1557957 (1925-10-01), Amrhein
patent: 2852757 (1958-09-01), Fawick
patent: 2914630 (1959-11-01), Ralston
patent: 3406800 (1968-10-01), Buchanan et al.

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