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:
Dec. 03, 2019
Filed:
Nov. 03, 2015
Danfoss A/s, Nordborg, DK;
Welm Friedrichsen, Nordborg, DK;
Stig Kildegaard Andersen, Krusaa, DK;
Lars Martensen, Soenderborg, DK;
Danfoss A/S, Nordborg, DK;
Abstract
A pump arrangement () is provided comprising a driving shaft (), cylinder drum means () fixed to said shaft () in rotational direction and having a plurality of cylinders (), and a piston () in each cylinder, each piston () having a slide shoe () in contact with driving surface means (). Such a pump arrangement should produce a pressure with low undulations. To this end said cylinder drum means () comprise at least a first cylinder drum () and a second cylinder drum (), said cylinder drums () being fixed to said common shaft () in rotational direction, wherein the cylinder drums () are offset with respect to each other in rotational direction.