Photoelectric line measuring device with digital display
US5286972A · kind A · utility
20Cited by
11References
10Claims
0Family size
Inventors
Key dates
| Filing date | Mar 5, 1993 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Mar 5, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B3/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A distance measuring device measures distance by optically measuring the length of a flexible member, such as a line, as it is left off a reel. The line is provided with a plurality of dye marks spaced at predetermined increments. The dye marks are detected by an optical sensor. The optical sensor is operatively connected to a circuit which maintains a count indicative of the length of the line. The count is displayed on an LED display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.