Spring-loaded brake cylinder for a railway vehicle brake
US3977304A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 1974 |
| Grant date | Aug 31, 1976 |
| Priority date | — |
| Expiry date | Sep 5, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T17/086
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A spring-loaded brake cylinder has a piston therein one side of which is loaded by a spring and the other side of which is subjected to a pressure medium introduced into the cylinder. The cylinder is provided with an auxiliary release device comprising a screw coupling having a first coupling member which is rotatable but not axially displaceable and a second coupling member threadedly engaged with the first coupling member and acting upon the brake cylinder through an abutment coupling against the force of the load spring. The first coupling member is provided with a reversible thread and a second coupling means is provided to retain the second coupling member against rotation when the pressure acting upon the cylinder falls below a predetermined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.