Distributive retarder test device
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United States of America Patent
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-
Apr 17, 2001
Grant Date -
N/A
app pub date -
Dec 16, 1998
filing date -
Dec 16, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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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