B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
B60T 8/18 (2006.01)
Patent
CA 2348361
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.
Carroll John B.
Scott Daniel G.
Macrae & Co.
Westinghouse Air Brake Technologies Corporation
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