公开(公告)号：US4230021A

公开(公告)日：1980-10-28

申请号：US841045

申请日：1977-10-11

Applicant: Andre Aurousseau ,  Michel Roger

Inventor： Andre Aurousseau ,  Michel Roger

IPC: B60T15/18 ,  B60T17/08 ,  F15B11/08

CPC classification number: B60T15/18 ,  B60T17/08 ,  B60T17/086

Abstract: A spring brake actuator has a quick release clutch for deactivating the brake in absence of fluid pressure and a governing device operating the clutch in response to the relative pressures prevailing at the service brake and spring brake cylinders. The governing device comprises a biased pilot valve and a signal valve which permit alternate operation of the brake release clutch manually or automatically.

Abstract translation: 弹簧制动器致动器具有快速释放离合器，用于在不存在流体压力的情况下停用制动器，并且响应于在制动器和弹簧制动器缸上存在的相对压力而操作离合器的调节装置。 控制装置包括偏置先导阀和信号阀，其允许手动或自动地使制动器释放离合器交替操作。