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:
Nov. 21, 2006
Filed:
Jul. 29, 2003
Otto Rosenauer, Langenargen, DE;
Karsten Juterbock, Wangen, DE;
Johann Bertsche, Radolfzell, DE;
J. Wagner GmbH, Markdorf, DE;
Abstract
In a piston pump () having a differential piston () positioned in a cylindrical housing () and translationally drivable, a first pressure chamber () of the differential piston () is connectable to a second pressure chamber () via a check valve () inserted into a connecting line (), and to a storage reservoir () via an inlet valve (). The differential piston () is provided with a dipping piston () attached to a piston rod (). In addition, a pass-through () of the piston rod () from the first pressure chamber () is closed fluid-tight by seals (), and a transport line () is positioned laterally offset from or concentric to the piston rod () in the vicinity of the pass-through () of the latter.