Power steering apparatus
US6516680B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2000 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Nov 28, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19809
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A power steering apparatus comprises a rotary cylinder supported with its movement in the axial direction restrained and rotated coaxially with the steering shaft by the force a transmitted from the motor for assisting steering, a plurality of feed rings held eccentrically in said rotary cylinder with their axial centers in parallel, and an engaging groove formed spirally around the outer circumference of the steering shaft for engaging with the projections provided circumferentially on the inner surfaces of the respective feed rings. With this arrangement, it becomes possible to convert the rotation of the motor into the movement in the axial direction of the steering shaft. Thus, this power steering apparatus has a low noise power transmission mechanism with a simple structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.