Track brake for railways
US4198909A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 1977 |
| Grant date | Apr 22, 1980 |
| Priority date | — |
| Expiry date | Dec 6, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18992
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The track brake is intended to limit the speed of rolling motion of a freight car according to the track gradient in a marshalling yard. A retarder installed along a braking rail comprises a number of braking tappets each having a portion which projects above the braking rail in the rest position and each being applied in turn beneath each wheel of the car to be braked. The track brake comprises a motion converter constituted by a series of rockers each pivotally mounted on a pin connected to the braking rail. One portion of each rocker cooperates with a braking tappet and another portion of the rocker cooperates with a piston-rod of a substantially horizontal hydraulic brake cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.