Document Type and Number:
Japanese Patent JPH026931
Kind Code:
B2
Abstract:
A movable disc for a friction type electromagnetic clutch/brake is designed for preventing the production of grating sounds from the movable disc. The movable disc includes a rotary armature being movable in a predetermined direction by the application of electromagnetic force, a friction material stuck onto one side surface of the rotary armature, an elastic member supported on one side surface of the rotary armature to the side opposite to the friction material, a face plate fitted to the rotary armature so as to urge the elastic member to the rotary armature. Perforations are formed in the face plate to reduce its mass and the surface area contacting to the elastic member thereby attaining a rapid start up and good periodic damping characteristic.
Inventors:
KUMAGAI HIROSHI
Application Number:
JP3040982A
Publication Date:
February 14, 1990
Filing Date:
February 26, 1982
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
F16D27/112; F16D27/14; F16D65/00; F16D65/12; F16D65/14; F16D65/18; F16D67/00; F16D67/06; F16F15/12; F16F15/126
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