Document Type and Number:
Japanese Patent JPS5525295
Kind Code:
B2
Abstract:
1425507 Friction clutches; clutch-brake combinations CATERPILLAR TRACTOR CO 1 March 1973 [1 March 1972] 9990/73 Headings F2C F2L and F2D In a friction clutch for a motor vehicle wherein a clutch 37 is engaged by the centrifugal pressure of liquid in a chamber 43 fast with a driving flywheel 30 and acting through a piston 42 and spring 48 on a clutch presser plate 41 against the bias of a clutch disengaging spring 53 and the clutch may be disengaged whilst the centrifugal pressure is above the clutch engaging value by supplying pressure air to a clutch disengaging servo 56 which acts through rods 61, 64 to relieve the pressure of the spring 48 from the presser plate 41, a light spring 74 maintains the clutch plates 37 in contact with each other to provide a small torque to an output shaft 18 during clutch disengagement and thus facilitate ratio shift in a following changespeed gear. During clutch disengagement, due to a decrease in the centrigual pressure in the chamber 43, a stop 81 fast with the piston 42 engages radial projections 76 on the first clutch plate 37A to positively withdraw the latter against the bias of the spring 74 for complete clutch disengagement. A stop 54 limits clutch engaging movement of the piston 42 and thus the maximum clutch engaging pressure. The clutch output shaft 18 may be stopped by supplying pressure air to a servo 67 which engages a brake 71.
Application Number:
JP2475573A
Publication Date:
July 04, 1980
Filing Date:
March 01, 1973
Export Citation:
International Classes:
F16D25/12; F16D23/02; F16D25/0638; F16D25/08; F16D43/284; F16D67/04