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. 17, 2004
Filed:
Nov. 26, 2002
Leif Hansen, Sønderborg, DK;
Peter J. M. Clausen, Nordborg, DK;
Christen Esperson, Augustenborg, DK;
Jan Petersen, Egernsung, DK;
miniBooster Hydraulics A/S, Sønderborg, DK;
Abstract
A hydraulic pressure intensifier includes a supply connection, a return connection, and a high-pressure connection. An intensifier piston assembly includes a high-pressure cylinder with a high-pressure piston displaceable therein and a low-pressure cylinder having a greater cross-section than the high-pressure cylinder, with a low-pressure piston which is displaceable therein. The low-pressure piston is connected to the high-pressure piston and divides the low-pressure cylinder into a first low-pressure chamber on the side of the high-pressure piston and a second low-pressure chamber. A switching valve acts on the second low-pressure chamber with pressure from a pressure source or relieves it of pressure. The switching valve includes a valve element which in one direction of movement is subjected to a pressure in a first control pressure chamber with a smaller pressure application area and in the opposite direction of movement is subjected to a pressure in a second control pressure chamber with a larger pressure application area. The pressure in the second control pressure chamber is controlled by the low-pressure piston.