Rolling device for a displaceable cross frog
US7063293B2 · kind B2 · utility
2Cited by
2References
23Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Apr 23, 2003 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Apr 23, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B2202/046
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In a roller device (6,7) for a movable point of frog (1), including a sliding strip (18) and at least one roller (11) and at least one roller bearing (12) fixed to a stationary part of the switch, the roller(s) (11) is/are mounted on an arm (19) of a double-armed lever (10). The pivot bearing (12) of the lever (10) is arranged in a support (13) connected with a stationary part of the switch, wherein the arm (18) facing away from the roller(s) (11), of the double-armed lever (10) is pivotable against a spring (19) with adjustable spring power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.