Power steering system of motor drive type
US5040630A · kind A · utility
18Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1989 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | Jan 3, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/0463
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The power steering system of this invention has a motor which provides auxiliary torque for the steering shaft to assist in steering. The maximum level of the motor current is varied in response to the mean motor current at predetermined intervals of time so as to regulate the maximum motor current and thereby prevent overheating or burning of the motor when, for example, the steering wheel is held for a long time in an extreme position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.