| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method and device for the frictional engagement of two surfaces. SOLUTION: This disk brake or the clutch system includes a housing supporting a rotatable shaft, a reaction plate fixed to the shaft so as to be rotatable with the shaft, and a friction disk having a relation possible of contacting with the reaction plate. At least, one reaction plate or the friction disk is formed into an annular shape and includes a plurality of liquid cooling channels extending from the inside circumferential edge to the outside circumferential edge.</p> |
