Position detecting potentiometer for a moving body
US4994752A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 1989 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | May 24, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/165
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A position detecting apparatus electrically detects the present position of a moving body reciprocated within a movable region. The apparatus comprises a resistance section continuously disposed by a predetermined length along the reciprocating direction within a detecting region corresponding to the movable region on a substrate composed of an insulator. A plurality of region discriminating patterns are formed by combining a conductive section discontinuously disposed by a predetermined length along the reciprocating direction within the detecting region on the substrate, and an insulating section having no conductor. An electric brush is provided which is connected to the moving body and reciprocated within the detecting region in a state in which the brush slidably contacts the resistance section and the plurality of region discriminating pattern section. A first position detector detects the position of the moving body based on a resistance value corresponding to the position of the brush when the brush is located on the resistance section. A second position detector detects the position of the moving body by detecting a predetermined kind of combination of the conductive secti…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.