Coefficient of frictional determining apparatus for railway vehicles
US3992922A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1975 |
| Grant date | Nov 23, 1976 |
| Priority date | — |
| Expiry date | Oct 14, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N19/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This disclosure relates to a predictor for determining the coefficient of friction existing between the rotating wheels of moving railway vehicles and the brake shoes of a pair of brake elements prior to the humping operation in a classification. One of the brake elements is slidably mounted to move longitudinally relative to the track rail when engaged by the rotating wheels of the railway vehicle. The kinetic energy or force imparted to the slidable brake element is transposed in fluid pressure by a pressurized responsive transducer. The fluid pressure is sensed by a measuring device which activates an alarm when the wheels of the railway vehicle are dirty or contaminated by unctuous material to permit the vehicle to be diverted to a sidetrack for special handling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.