Automatic set and release hand brake
US6789855B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2002 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Sep 17, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2133
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An automatic application hand brake apparatus is provided for automatically applying at least one brake member secured to a railway vehicle with the hand brake assembly. The apparatus comprises an operating member having at least one ratchet attached to a drive shaft of said hand brake assembly. An application cylinder is connected to a drive arm pivotally attached to the drive shaft and containing and operating pawl engaging the operating ratchet. The reciprocating motion of the drive arm caused by the application cylinder enables reciprocal rotation of the operating arm and furthermore causing application of at least one brake member. A plurality of control valves are connected to the source of the fluid pressure for initiating and regulating the supply of fluid pressure to the application cylinder and for stopping an automatic application of such hand brake in case of the emergency or a reversal of the unintended activation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.