Tape rule assembly with linear optical encoder for sensing human-readable graduations of length
US10859363B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2017 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Aug 24, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B2003/1087
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A tape rule assembly includes a linear optical encoder for sensing human-readable graduations of length disposed on a surface of a tape, without requiring any other machine-readable indicia to be present on the tape. The optical encoder includes two optical sensors disposed in a sensor holder pivotably disposed in the tape rule housing and configured to be displaced relative to one another in the housing along both the “x” axis and the “z” axis, a set of intersecting “x”, “y” and “z” axes being defined relative to a tape exit in the tape rule housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.