发明名称 |
Pneumatically actuated parking brake |
摘要 |
A vehicle parking brake system pneumatically actuates an air cylinder to mechanically lock a wheel brake in an applied position in response to a parking demand request. The air cylinder includes an extendable shaft that supports a lock member. When a parking demand request is initiated by moving a hand control, an air chamber is pressurized with air from a parking reservoir via a valve assembly to apply the wheel brake. Air pressure is released from the air cylinder and the lock member is moved into engagement with a brake component to lock the wheel brake in the applied condition. The wheel brake remains locked even if pressure is released from the air chamber. When a release command is initiated, the air cylinder is pressurized and the lock member is moved out of engagement with the brake component.
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申请公布号 |
US2005092563(A1) |
申请公布日期 |
2005.05.05 |
申请号 |
US20030701354 |
申请日期 |
2003.11.04 |
申请人 |
MCCANN DENIS J.;KRAMER DENNIS A. |
发明人 |
MCCANN DENIS J.;KRAMER DENNIS A. |
分类号 |
F16D65/22;B60T13/68;B60T15/04;B60T17/16;B60T17/18;(IPC1-7):B60T8/34 |
主分类号 |
F16D65/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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