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:
Aug. 02, 2016
Filed:
Aug. 26, 2014
R. Stahl Schaltgerate Gmbh, Waldenburg, DE;
Ulrich Mann, Schwabisch Hall, DE;
Bernd Limbacher, Schwabisch Hall, DE;
R. Stahl Schaltgeräte GmbH, Waldenburg, DE;
Abstract
An explosion-proof housing () with a pressure release device () and method of manufacture. The pressure release device () including a porous body () having a gas-permeable porous central area () and a surrounding edge zone (). A peripheral surface () of the porous body () is arranged in the edge zone (). The porosity and/or the pore size of the porous body is specified or changed at the peripheral surface (), or at the edge zone (), such that the penetration of liquid casting material (G) into the central area () of the porous body () is prevented across the peripheral surface () or the edge zone (). The edge zone () thus forms a barrier (B) for the casting material (G) which enables the porous body () to be inserted in a casting mold () and insert molded with casting material (G) in production of an accommodating part () of the housing.