Audio tachometer system
US3947814A · kind A · utility
8Cited by
4References
11Claims
0Family size
Inventor
Key dates
| Filing date | Sep 20, 1974 |
| Grant date | Mar 30, 1976 |
| Priority date | — |
| Expiry date | Sep 20, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P1/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An audio-tachometer system including an electronic tachometer having a first pointer for indicating engine speed, and a second pointer that is manually settable to a desired engine speed for shifting gears, wherein the engine speed corresponds to the speed at which the second pointer is set, an electrically conductive edge of the first pointer will bridgeably interconnect a pair of contacts mounted upon the second pointer to close an electrical circuit and thereby supply power to energize a signal means, e.g., audio tone generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.