Length measuring device
US11609079B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2021 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Dec 29, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/34753
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A length measuring device includes a carrier with a scale which extends longitudinally in a measuring direction. A scanning carriage for scanning a measuring graduation of the scale is longitudinally guided in the measuring direction, and, via a coupling, is rigidly coupled to a driver in the measuring direction and transversely thereto coupled to it in a flexible manner. The coupling includes a coupling element arranged between a first coupling point on the scanning carriage and a second coupling point on the driver. At the second coupling point, the coupling element is attached via a solid-body joint that is designed to carry the coupling element so as to be freely rotatable in relation to the driver about an axis of rotation which runs perpendicularly to a plane of the measuring graduation. The coupling element has a lower density than steel and/or a higher modulus of elasticity than steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.