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:
Oct. 09, 2007
Filed:
Jan. 12, 2002
Norbert Sann, Riegelsberg, DE;
Werner Wilkendorf, Ottweiler, DE;
Norbert Sann, Riegelsberg, DE;
Werner Wilkendorf, Ottweiler, DE;
Hydac Filtertechnik GmbH., Sulzbach/Saar, DE;
Abstract
A filter device has a filter housing () receiving a first filter element (), through which a medium may flow in a given direction, and has a bypass device (). Along with the first filter element (), a second filter element () is provided. The filter elements are arranged in series, one behind the other, in the direction of flow. When the bypass device () is activated, the second filter element (), immediately following in the direction of flow, filters the medium. The second filter element thus takes over the main filtration of the medium on actuation and operation of the bypass device, since the first filter element is essentially no longer available for a filtration process due to the bypass device.