Patent · US Active

Filter

US8709249B2 · kind B2 · utility

1Cited by

5References

11Claims

0Family size

Assignee

HYDAC FILTERTECHNIK GMBH · DE

Inventors

Andreas Schmitz · Glückstadt, DE
Edwin Koch · Tholey, DE
Matthias Schwender · Kirkel, DE
Claudia Brocker · Saarburg, DE

Key dates

Filing date	Dec 18, 2008
Grant date	Apr 29, 2014
Priority date	—
Expiry date	Sep 29, 2030

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2239/0241
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter has a filter medium (10) during operation clears fluid, particularly in the form of hydraulic fluid. The filter medium (10) is made of a material such that the potential difference to the fluid to be cleaned is low. The parts of the filter medium (10) have different potentials with respect to each other and/or the fluid to be cleaned such that they cancel each other at least partially, specific dissipation is aspired, or a return of electric charge to the associated filter medium (10) is provided, using a charge equalization situation.

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