| 摘要 |
<p>A hydraulically actuated brake fitted with a device to prevent an excessive rise in the temperature of the hydraulic fluid comprises an actuating piston in the form of a hollow body or cup within which is disposed an insulating core. The core has an outer face which engages the respective friction pad, and is engaged by a press fit within the cup by engagement means which leave an air gap between the core and the cup. The press fit engagement is thereby facilitated and heat transfer between the piston and the hydraulic fluid contained in the actuating chamber is reduced, thereby protecting the hydraulic fluid from an excessive rise in temperature during braking.</p> |
