Patent · US Active

Filter element and hydraulic circuit with such a filter element

US10213709B2 · kind B2 · utility

0Cited by

2References

10Claims

0Family size

Assignee

RT-FILTERTECHNIK GMBH · DE

Inventors

Frank Oberli · Eglisau, CH
Dirk Schönfeld · Apolda, DE

Key dates

Filing date	Dec 24, 2012
Grant date	Feb 26, 2019
Priority date	—
Expiry date	Jan 28, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2201/122
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter element has a preferably multilayer structure of a pleated filter medium (3) with a plurality of individual filter pleats (5, 7). Due to an alternating sequence of filter pleats (5) with a first pleat height (h1) and filter pleats (7) with a second pleat height (h2), more effective filter surfaces are available than with filter pleats with a uniform pleat height. Upon throughflow by a fluid to be filtered, a lower surface load for the filter medium (30 and lower passage speed of the fluid are present during filtration. A static loading of the filter medium (3) during operation of the filter is then reduced. A hydraulic circuit has such a filter element (1).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.