High-performance power-assisted steering
US5482131A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1993 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Oct 12, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/24
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A power-assisted steering device having a piston located in a casing and driven by a rotational input from an input shaft. The piston has a sealing section for separating a first chamber from a second chamber and a transmission section. The transmission section having a U-shaped profile formed by two branches which are coplanar with the main axis of the casing. The branches form racks and mesh at respective geometric sites with toothed sectors which are integral with one another and an output shaft. A sleeve located in the U-shaped profile and connected to the piston prevents relative rotation of the piston and sleeve with respect to the main axis of the input shaft while allowing some relative radial translations with respect to the input shaft as the piston is moved in response to a pressure difference in fluids supplied to the first and second chambers to provide assistance in rotating the output shaft in response to an input applied to the input shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.