| 摘要 |
COMPACT BRAKE PISTON RETURN MECHANISM The brake piston return mechanism (10) comprises a housing (22) which includes housing part (50) that forms with the housing a chamber (59) and an axially extending groove (55). Disposed within the axially extending groove (55) and forming a movable portion (58) of the chamber (59) is an annular actuation piston (70). The actuation piston (70) includes a pair of seals (74) to prevent leakage. Within the housing part (50) is a bore (40) enclosing a brake tube (80) that includes an interior radially extending flange (84) and an exterior radially extending flange (82). The exterior radially extending flange (82) is engaged by the actuation piston (70). Located within the brake tube (80) is an adjuster mechanism (90). After the brake tube (80) has been displaced by the actuation piston (70) and braking has ceased, the brake tube (80) is returned to a running clearance (A) by way of the adjuster mechanism (90). 13589/lcm |
