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. 09, 2016
Filed:
Oct. 24, 2012
Applicant:
Sauer-danfoss Aps, Nordborg, DK;
Inventors:
Onno Kuttler, Cousland/Dalkeith, GB;
Luke Wadsley, Edinburgh, GB;
Michael D. Gandrud, Ames, IA (US);
Pierre Joly, Edinburgh, GB;
Assignee:
Danfoss Power Solutions ApS, Nordborg, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 21/04 (2006.01); F04B 23/08 (2006.01); F04B 1/14 (2006.01); F04B 7/00 (2006.01); F04B 23/10 (2006.01); F04B 23/14 (2006.01); F04B 49/24 (2006.01);
U.S. Cl.
CPC ...
F04B 23/08 (2013.01); F04B 1/145 (2013.01); F04B 7/0076 (2013.01); F04B 23/103 (2013.01); F04B 23/106 (2013.01); F04B 23/14 (2013.01); F04B 49/243 (2013.01); F15B 2211/20592 (2013.01);
Abstract
In open-circuit hydraulic systems (), the cross-sections of the supply lines () and input valves of the hydraulic pump () have to be large, so that sufficient flow flux can be provided. This hinders a reduction of the size of the pump and the whole hydraulic system. It is suggested that the supply flow () of a hydraulic pump () is charged by a second, charging pump (), to a mid-pressure level (). The cross-sections of the supply flow areas can thus be decreased.