Patent · US Active

Slip ring with selective wear indication

US10734775B2 · kind B2 · utility

0Cited by

2References

15Claims

0Family size

Assignee

Schleifring GmbH · DE

Inventors

Christian Holzapfel · Fürstenfeldbruck, DE
Holger Häffner · Schwabmünchen, DE

Key dates

Filing date	May 6, 2019
Grant date	Aug 4, 2020
Priority date	—
Expiry date	May 6, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04B3/46
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A slip ring unit comprises a brush block with multiple brushes rotatable against a module with multiple sliding tracks. A position encoder is connected to the brush block and the module, for detecting the relative position between the brush block and the module. An evaluation unit receives signals from the position encoder and generates a position-dependent signal indicating wear. The evaluation unit has multiple wear counters assigned to multiple positions and/or sections of the slip ring. If a movement is detected within a certain section, the related wear counter is incremented to allow to monitor wear at slip rings that are not continuously rotating.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.