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:
Jan. 21, 2020
Filed:
Oct. 28, 2016
Dräger Safety Ag & Co. Kgaa, Lübeck, DE;
Matthias Hoder, Lübeck, DE;
Stephan Hake, Pansdorf, DE;
Mathias Ahrens, Techau, DE;
Andrea Görndt, Lübeck, DE;
Dräger Safety AG & Co. KGaA, Lübeck, DE;
Abstract
A method for manufacturing a filter () for gas masks includes providing a flat paper and folding the paper into a pleated preform. The filter element () is separated from the pleated preform () and is inserted into a housing (). The inserted filter element () is connected to the housing () at least at some points. This filter elements () may have a polygonal outer contour, upon separating the element from the pleated filter preform (). A foam and/or an adhesive is applied to an outer edge of the filter element (), arranged on the circumference of the filter element, for an at least partial sealing of an edge (). This establishes a connection to the housing () in at least some sections.