Patent ID: 8172046
Filing Date: 2012-05-08
Classification: F16D

Abstract:
1. A disc brake device comprising a piston ( 5 ) pressing a pad ( 8 ) against a disc ( 2 ) when said piston is subjected to a first force along a first axis (z′z) in a direction directed from the piston toward the pad, characterized in that the device comprises a first plate ( 12 ) inserted between a first surface ( 52 ) of the piston ( 5 ) and said pad ( 8 ) and a second plate ( 13 ) between the first plate ( 12 ) and said pad ( 8 ), the device generating a second force along said first axis (z′z) in a direction directed from the pad toward the piston when said pad ( 8 ) is caused to move as a result of rotation of the disc ( 2 ), and in that the surface ( 52 ) has, passing through it, a rod ( 11 ) that has an end ( 53 ) following the movement of the piston ( 5 ) when said piston is subjected to said first force along the first axis (z′z) in a direction oriented from a piston toward the pad, and to be immobilized by a key ( 15 ) so as to press the pad ( 8 ) against the disc ( 2 ) when said piston is no longer subjected to said first force, the first plate ( 12 ) and the rod ( 11 ) being arranged such that the second force, when generated, is applied by the first plate ( 12 ) to the rod ( 11 ).