Empty load device
AssigneeNew York Air Brake Corporation
InventorsRobert Gayfer, Michael Spadaccini
Life of this patent
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Abstract
An empty-load system including a first housing having brake cylinder, control valve, equalization volume reservoir and pilot ports. The first housing also has a ratio means for controlling the connection between ports and has a piston responsive to a pilot pressure to operate the ratio means. The system also includes a second housing having a brake cylinder port and a pilot port connected, respectively, to the brake cylinder port and the pilot port of the first housing. The second housing also has a sensor means, having a sensor piston, for sensing the load of a railcar and has a sensor valve for connecting the brake cylinder port to the pilot port for a first position of the sensor piston.
Claims10
An empty-load system comprising:
- a first housing having brake cylinder, control valve, equalization volume reservoir and pilot ports;
- ratio means, in the first housing and having a ratio piston and a ratio valve, for controlling the connection of the control valve port to the brake cylinder port and to the equalization port;
- a pilot piston in the first housing being responsive to a pilot pressure at the pilot port to operate the ratio valve;
- a second housing having a brake cylinder port and a pilot port connected respectively to the brake cylinder port and the pilot port of the first housing;
- a sensor means, in the second housing and having a sensor piston, for sensing a load of a railroad car;
- and
- a sensor valve, in the second housing and connected to the sensor piston, connects the brake cylinder port to the pilot port for a first position of the sensor piston.
Dependencies are inferred from the claim text.