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:
Aug. 12, 2003
Filed:
May. 17, 2002
Hans Reinhardt, Bretten, DE;
FSP-Holding AG, Baar, CH;
Abstract
A filter device for filtering hydraulic fluid includes first and second subelements within a filter housing having separate inflows thereto for the respective subelements and a common outflow The first subelement has a higher filter fineness than the second subelement. Several bypass configurations are taught and include: (i) a bypass line for bypassing the second subelement by drawing fluid directly from the supply (ii) a bypass valve (FIG. ) for bypassing the first subelement; and (iii) a bypass valve (FIG. ) for connecting the first subelement inflow with the common outflow The device is compact, has an easy-to-service arrangement, and ensures protection of a hydraulic pump and highly stressed hydraulic components.