Filter element with expandable metal jacket

US5622624A · kind A · utility

Assignee

• HYDAC FILTERTECHNIK GMBH · DE

Inventors

• Viktor Lauer · Nalbach, DE
• Matthias Schwender · Kirkel, DE

Key dates

• Filing date: Sep 7, 1995
• Grant date: Apr 22, 1997
• Expiry date: Sep 7, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2265/06
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A tubular filter element for filtering fluids includes a zigzag folded filter mat having rounded off mat ends. The mat ends face one another and are located in fixed positions. A bed of adhesive connects and bonds the mat ends. A cylindrical expandable metal grid surrounds at least one side of the filter mat and forms an expandable metal jacket. The metal jacket has a small mesh width and protectively surrounds the filter mat. The metal jacket has bent jacket ends defining the bed of adhesive and extends radially inwardly. The jacket ends face one another to define a space receiving the mat ends. The mat ends and the jacket ends extend substantially parallel.