Speedometer for vehicle
US5969224A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1997 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Mar 27, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P1/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An object of the present invention is to provide a speedometer capable of distinctly indicating traveling speeds in a range of traveling speeds at which a vehicle travels in most of the time. A speedometer has a scale plate provided with a main speed scale of a substantially semicircular shape. The overall scale range of the main speed scale is divided by division points into four equal sections, and scale marks 5, 10, 15 and 45 mph are marked on the main speed scale at the division points, respectively. A low-speed range, i.e., a working speed range, of 0 to 15 mph extends in 3/4 of the overall scale range and the working speed range is graduated in quinary divisions of 5 mph. Therefore, speed indications in the low-speed range can accurately be read with an increase number of digits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.