Patent · US Active

Compact integrated rotary joint with a resonant shield

US11641049B2 · kind B2 · utility

0Cited by

3References

17Claims

0Family size

Assignee

Schleifring GmbH · DE

Inventors

Nils Krumme · Feldafing, DE
Ulrich Herrmann · Graz, AT

Key dates

Filing date	Apr 20, 2022
Grant date	May 2, 2023
Priority date	—
Expiry date	Apr 20, 2042

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B6/56
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A rotary joint includes a first part and a second part configured to rotate around a rotation axis against the first part. The first part has a first magnetic core and a capacitive data link component. The second part has a second magnetic core for coupling power with the a first magnetic core and a second capacitive data link component to transfer data from and/or to the first capacitive data link component. To weaken magnetic stray fields from the magnetic core, a resonant shield is provided outside the airgap between the magnetic cores. The resonant shield comprises an open ring-shaped structure, having two open ends which are connected by a capacitor to form a resonant circuit.

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