发明名称 |
PNEUMATIC PRESSURE CONTROL DEVICE FOR AN EMPTY/LOAD CHANGEOVER VALVE ON A RAILWAY CAR |
摘要 |
A pneumatic pressure control device for an empty/load changeover valve on a railway car, which enables an empty/load changeover valve to have a lower profile. The pneumatic pressure control device comprises a mounting member having a first surface, a second surface, and further having an actuating push rod. A sensor arm of a predetermined size and shape has a first end and a second end. A first means disposed adjacent at least one of the first surface and the second surface of the mounting member pivotally supports the sensor arm in a predetermined position on the mounting member. A second means is engageable with the sensor arm and the actuating push rod on the mounting member for moving the push rod in response to a movement of the sensor arm. A load sensing means has at least a portion thereof disposed on the second end of the sensor arm for determining a rate of brake cylinder pressure required relative to an actual weight of a railway car. The sensor arm and the load sensing means have a predetermined travel limit.
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申请公布号 |
CA2348361(C) |
申请公布日期 |
2005.10.11 |
申请号 |
CA20012348361 |
申请日期 |
2001.05.24 |
申请人 |
WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATION |
发明人 |
SCOTT, DANIEL G.;CARROLL, JOHN B. |
分类号 |
B60T8/18;(IPC1-7):B60T8/18 |
主分类号 |
B60T8/18 |
代理机构 |
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