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. 03, 2017
Filed:
Nov. 03, 2010
Applicant:
Anders Nydahl, Filipstad, SE;
Inventor:
Anders Nydahl, Filipstad, SE;
Assignee:
Atlas Copco Rock Drills AB, Orebro, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 29/11 (2006.01); B01D 29/60 (2006.01); B01D 35/143 (2006.01); B01D 35/147 (2006.01); F15B 21/04 (2006.01);
U.S. Cl.
CPC ...
B01D 29/114 (2013.01); B01D 29/115 (2013.01); B01D 29/605 (2013.01); B01D 35/147 (2013.01); B01D 35/1435 (2013.01); B01D 2201/48 (2013.01); F15B 21/041 (2013.01);
Abstract
A filter () for a return line (L, L) for hydraulic oil to a hydraulic tank (), which filter () has a filter element (). The filter () is arranged to filter the hydraulic oil through the filter element () when the hydraulic oil is below a first oil level (H) in the filter (), and the filter () has an arrangement () to cause the hydraulic oil to bypass the filter element () when the oil level (H) in the filter () exceeds the first oil level (H) without causing any significant back pressure.