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:
Dec. 03, 2002
Filed:
Aug. 23, 2001
Johannes Kühmayer, Vienna, AT;
Johannes Besau, Vienna, AT;
Hoerbiger Ventilwerke GmbH, Vienna, AT;
Abstract
An explosion relief valve for a confined space, more particularly for the crankcase of an internal combustion engine, includes a seat ( ) which may be fitted into a boundary wall ( ) of the space to be protected, a spring-loaded closure plate ( ) cooperating with the valve seat, at least one flame barrier ( ) having low pressure resistance in the gas path leading through the valve, preferably consisting of sheet-metal strips stacked one above another transversely to the throughflow direction of the gas, which sheet-metal strips are provided preferably at least over part of their width with irregular corrugations, and at least one other perforated wall ( ) in the gas path of expanded metal.