Vertically actuated rail guide wheels
US5660115A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1995 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Oct 27, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60F2301/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A rail guide wheel arrangement provides movement of rail wheels between rail and road positions with a compact zone of movement such that no open zone is required in front or behind the apparatus to accommodate such movement. The movement of rail wheels and a wheel support has no component of movement in the rail direction. Side shifting of the guide wheel unit can be controlled by control arrangement using a single joystick to control two actuators. A suspension is provided using two spring cells. An axle may include cavities to receive the spring cells when the apparatus is in its road position. A locking arrangement uses pilot operated check valves and secondary mechanical locks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.