Title:
制御バルブを備えた空気式ブレーキアクチュエータ
Document Type and Number:
Japanese Patent JP4660442
Kind Code:
B2
Abstract:
An air-operated brake actuator system (10) of a vehicle comprises a spring brake actuator (14) and a service brake actuator (12), the spring brake actuator including a sealed housing with a spring chamber (58) and a pressure chamber (56), and a hollow actuator rod (78) disposed in the spring brake actuator and axially moveable for applying a parking brake, the service brake actuator including a service pressure chamber (38) for applying a service brake, in which a control valve of the brake actuator system includes a valve body (82,84) placeable within the hollow actuator rod, the valve body including an opening formed therein for allowing fluid communication between the spring chamber (58) of the spring brake actuator and the service pressure chamber (38) of the service brake actuator through the hollow actuator rod, the control valve including a membrane formed of an elastic material and having a breathing hole formed there-through, the membrane positioned within the opening of the valve body and configured to seal the opening except the breathing hole when the membrane is not subject to a fluid pressure beyond a threshold level.
Inventors:
Albert Dee Fisher
Application Number:
JP2006236152A
Publication Date:
March 30, 2011
Filing Date:
August 31, 2006
Export Citation:
Assignee:
Haldex Break Corporation
International Classes:
B60T13/38; B60T15/36; B60T17/08; F16D65/28
Domestic Patent References:
| JP2005133945A | ||||
| JP61142973U | ||||
| JP57067162U | ||||
| JP51095823U | ||||
| JP9511197A |
Attorney, Agent or Firm:
Sumio Tanai
Takashi Watanabe
Takashi Watanabe