R. Stahl Schaltgerate Gmbh

Helmut Wurz

Bernd Limbacher

Ulrich Mann

Siegfried Roll

A pressure release device for a protective housing for flameproof enclosure of electrical operating means. The device includes an accommodating body () having a passage (), and a porous body () arranged in the passage (). The porous body () is elastically deformed by means of an interference fit in the passage (), and thus, reliably supported therein free of flame or spark exiting gaps.

Pressure release device for housings with flameproof encapsulation with porous body having interference fit

The invention relates to an explosion protection housing having a threaded opening. A threaded bushing comprising a glass body in the interior thereof is mounted in the threaded opening. The glass body has a diverging lens on the exterior and a converging lens on the interior. A light-emitting diode is present at the focal point of the converging lens. In this manner, that light impinging within the capture region of the converging lens is converted into parallel light passing through the glass body to the diverging lens. The parallel light bundle is converted back into a divergent light bundle by the diverging lens so that the emerging light is visible from a wide angle range.

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Niedernhall, Germany

Helmut Wurz