Mounting structure for magnetic linear scale unit
US4843729A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1987 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Aug 18, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic linear scale unit comprises a magnetic scale and mounting blocks which are designed to be rigidly fixed to one of relatively displaceable mechanical components, about which magnitude or stroke of the relative thrusting displacement is to be measured. The magnetic scale has end sections to be mounted on the mounting blocks. The end sections have round peripheral portion mating with the mounting block. At least one of the end section also includes a structural component which allows pivotal movement of the magnetic scale relative to the mounting block for fine adjustment of the axis of the magnetic scale relative to the axis of relative movement of the mechanical components. A scale channel is free from the mounting block and simply serves as the magnetic shield. Therefore, the scale channel of the invention is substantially free from the accuracy requirement and production error of the scale channel and will never affect measurement of the displacement magnitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.