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. 26, 2022
Filed:
Jan. 03, 2019
Rt-filtertechnik Gmbh, Friedrichshafen, DE;
Gerhard Stehle, Constance, DE;
Dirk Schoenfeld, Schwabsdorf, DE;
RT-FILTERTECHNIK GMBH, Friedrichshafen, DE;
Abstract
A filter element () has an inner body () and an outer body (). One casing body () has a cross section deviating from circularity. Body contact surfaces () face one another for the contact of essentially all filter folds (a-f,-) of a pleated filter web (). The filter folds (a-f,-), in terms of fold height (h), are divided into individual groups (I, II) each having several filter folds (-) of a common fold height (h, h) alongside one another in sections. Between two adjacent filter folds (a-f,-) of different groups (I, II) filter folds are arranged (b-e;m) of at least one third group (III). The filter folds (b-e,m) of the third group (III), in the manner of step formation, have a common fold height (h) different from the respective fold height (h, h) of the filter folds (-) of the two adjacent neighboring groups (I, II), and/or, in the manner of curve formation, have different fold heights, establishing a transition between the fold heights (h, h) of the two adjacent groups (I, II).