Patent · US Expired

Apparatus for shielding against high-frequency electromagnetic radiation

US5898127A · kind A · utility

8Cited by

3References

12Claims

0Family size

Assignee

Leybold Systems GmbH · DE

Inventors

Manfred Schuhmacher · Alzenau, DE
Gotz Teschner · Hanau, DE
Johannes Kunz · Hasselroth, DE
Oldrich Medek · Maintal, DE

Key dates

Filing date	May 8, 1997
Grant date	Apr 27, 1999
Priority date	—
Expiry date	May 8, 2017

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S277/92
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A cover fitted about the periphery of an opening in a chamber wall is provided with a channel having therein both high frequency sealing elements which prevent escape of electromagnetic radiation, and a vacuum sealing element. The HF sealing elements are spaced apart by less than 1/4 of the minimum wavelength .lambda. to be shielded against, and are preferably held in the channel by a profiled element which also holds the vacuum sealing element. Alternatively, the channel may be provided in the chamber wall, or the sealing elements may he held in place without any channel.

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