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:
Jul. 08, 2014
Filed:
May. 19, 2008
Christian Selinka, Poppenhausen, DE;
Reinhold Mayer, Ravensburg, DE;
Thomas Meid, Deggenhausertal, DE;
Dirk Huhn, Friedrichshafen, DE;
Michael Ptock, Schonungen-Waldsachsen, DE;
Michael Huber, Langenargen, DE;
Christian Selinka, Poppenhausen, DE;
Reinhold Mayer, Ravensburg, DE;
Thomas Meid, Deggenhausertal, DE;
Dirk Huhn, Friedrichshafen, DE;
Michael Ptock, Schonungen-Waldsachsen, DE;
Michael Huber, Langenargen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A hydrodynamic retarder having a first blade wheel and having a second blade wheel concentric thereto, together forming a hydrodynamic circuit grouped about a common rotary axis. Each blade wheel is made of a base body and a blade arrangement fixed thereto including a plurality of blades. The hydrodynamic circuit is supplied by a fluid inlet, while the fluid removal from the hydrodynamic circuit is performed by a fluid outlet. The fluid inlet has an inlet spiral enabling tangential fluid flow and the fluid outlet has an outlet spiral enabling tangential fluid flow. At least one inlet spiral is associated with a flow guide guiding the fluid into the hydrodynamic circuit with at least one axial component.