The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2014
Filed:
Sep. 15, 2010
Siegfried Roll, Schwabisch Hall, DE;
Helmut Wurz, Niedernhall, DE;
Siegfried Roll, Schwabisch Hall, DE;
Helmut Wurz, Niedernhall, DE;
R. Stahl Schaltgeräte GmbH, Waldenburg, DE;
Abstract
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.