Circuit for detecting relative angular displacement of a steering wheel
US4007357A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1975 |
| Grant date | Feb 8, 1977 |
| Priority date | — |
| Expiry date | Jul 31, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K28/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
First and second up-down counters are provided to operate in response to the steering movements of a motor vehicle. The first up-down counter operates as an up-counter while the steering wheel is rotated clockwise to increase its count by unit steps and operates as a down-counter while the steering wheel is rotated counterclockwise decreasing the count by unit steps to zero. The second up-down counter operates as an up-counter while the steering wheel is rotated counterclockwise and as a down-counter while the steering wheel is rotated clockwise. The content of each counter represents the relative angular displacement of the steering wheel. When a predetermined count is reached in each of the counters, an output is provided to indicate that the steering wheel has rotated a predetermined relative amount of angular displacement and the counters are cleared for subsequent counting operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.