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:
Mar. 13, 2018
Filed:
Dec. 02, 2010
Ove Thorboel Hansen, Nordborg, DK;
Ove Thorboel Hansen, Nordborg, DK;
DANFOSS A/S, Nordborg, DK;
Abstract
The invention concerns a hydraulic piston machine, in particular a water hydraulic machine, with at least one cylinder, in which a piston () is arranged to reciprocate, the piston () comprising a hollow that is surrounded by an annular wall and has one open end. It is endeavored to keep cavitations small. For this purpose, a filling member () is arranged in the hollow (), the filling member () having at least a radial projection () and the annular wall () having at least a radial depression () in the inside facing the hollow (), or the annular wall () having a radial projection and the filing member () having a radial depression, the depression having a restraint (), at least at the end adjacent to the open end () of the hollow (), and the projection () and the depression () engaging each other.