发明名称 |
Distributive retarder test device |
摘要 |
A testing device is provided for checking the resistive force of a retarder installed on the rail of a railway track for reducing the speed of a railcar rolling along the track. The retarder is a hydraulic unit including a housing, a cylinder slidably mounted in the housing, a piston rod fixed to the housing, a piston assembly fixed to the piston rod and dividing the cylinder into upper and lower chambers, and a valve arrangement responsive to the flow of hydraulic fluid flowing between the upper and lower chambers. The testing device is constructed and arranged to allow a user to check the resistive force of a retarder installed upon the railway track while standing in an upright position.
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申请公布号 |
US6216525(B1) |
申请公布日期 |
2001.04.17 |
申请号 |
US19980212235 |
申请日期 |
1998.12.16 |
申请人 |
AAA SALES & ENGINEERING, INC. |
发明人 |
BERND JOHN J.;BOHME RICHARD C. |
分类号 |
B61K7/02;F16F9/06;(IPC1-7):G01H13/00 |
主分类号 |
B61K7/02 |
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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