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. 09, 2013
Filed:
May. 19, 2008
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;
Christian Selinka, Poppenhausen, DE;
Reinhold Mayer, Ravensburg, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A hydrodynamic retarder having a first blade wheel and a second blade wheel concentric thereto, forming a hydrodynamic circuit grouped about a common rotary axis. Each blade wheel includes a base body and a blade arrangement fixed thereto including a plurality of blades each connected to receptacles in the base body. A first ring segment of at least one blade wheel includes at least one first blade having a flow edge facing the other blade wheel in each case, said edge having at least one extension running in a substantially straight line between the radial outer end thereof and the radial inner end thereof, and at least one second blade is provided in a second ring segment of the blade wheel, the blade having a retraction both opposite the flow edge facing the other blade wheel in each case, and opposite a protrusion protruding in the direction of the other blade wheel.