Slip-slide detector system for railway car wheels
US4071282A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1976 |
| Grant date | Jan 31, 1978 |
| Priority date | — |
| Expiry date | Feb 4, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2200/26
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The inventive system comprises a magnetic pulse generator mounted on each axle of a railroad car. The outputs from the resulting pulse generators are fed to a detector which compares the speeds of the axles. When wheel slip indicated by a pulse count difference between axles is encountered, the detector operates solenoid-operated dump valves to increase brake pressure on both axles of the slipping axle truck. When axle speed recovers to a non-slipping condition, the dump valves are reset and brake pressure is reduced. The detector circuitry is also able to detect wheel slide thus permitting corrective action. In addition to the above, the system includes provision to prevent synchronous sliding of all axles by sensing the rate of change of count.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.