Device for operating rail switches
US7178764B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Jun 26, 2002 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Jun 26, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L5/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a device for operating rail switches, in which a plurality of mutually coupled hydraulic operating devices are arranged in an offset manner in the longitudinal direction of the rails, the cylinder-piston units of the hydraulic operating devices are connected to be driven in the same direction. The working volumes (13) of the hydraulic cylinder piston units (7) each comprise two regions (18, 19) with defined cylinder cross sections, wherein the respective regions (18) containing end-position securing means (20, 21), safety locking means and/or sensors, of the cylinder-piston units (7) arranged in an offset manner in the longitudinal direction of the rails have equal cross sections and the respective other regions (19) of the cylinder-piston units (7) arranged in an offset manner in the longitudinal direction of the rails have cross sections differing from one another. (FIG. 6)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.