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.

Date of Patent:
May. 03, 2005

Filed:

Jun. 28, 2001
Applicant:

Rudolf Schaeffer, Marktheidenfeld, DE;

Inventor:

Rudolf Schaeffer, Marktheidenfeld, DE;

Assignee:

Bosch Rexroth AG, Stuttgart, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B017/00 ; F01B013/04 ;
U.S. Cl.
CPC ...
Abstract

A hydraulic transformer wherein a multiplicity of displacers are guided in a displacement member. The stroke of the displacers is determined through the intermediary of a cam element, with pressure medium supply and discharge being controlled through the intermediary of a control member having at least three control grooves. In accordance with the invention either the displacement member or the cam element or the control member may be driven, whereas—depending on which component is driven—the cam element or the displacement member is mounted so as to be freely adjustable, and the remaining third component is accommodated integral with the housing.


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