Telescopically length variable steering column
US5242195A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1991 |
| Grant date | Sep 7, 1993 |
| Priority date | — |
| Expiry date | Nov 27, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/46
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A steering column comprises a pressure tube and a piston rod extending inwards and outwards of said pressure tube. The outer end of the piston rod is connected with a steering wheel. The pressure tube at its end remote from said steering wheel is connected with a steering mechanism of a motor vehicle. The pressure tube is rotatably mounted in a bearing tube. The piston rod is axially movable but non-rotatable with respect to the pressure tube. A liquid chamber is confined within the pressure tube and has a variable volume dependent on the axial position of the piston rod with respect to the pressure tube. The liquid chamber is connectable through a pivotal connection selectively with a pressure liquid source or with a pressure liquid receiving space or can be separated from both of them. A spring acts on the piston rod and is in balance with the liquid in the fluid chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.