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. 14, 1998
Filed:
Oct. 06, 1995
Klaus Vogelsang, Crailsheim, DE;
Jurgen Friedrich, Crailsheim, DE;
Hans Gebhardt, Langenzenn, DE;
Heribert Moller, Sachsen, DE;
Voith Turbo GmbH & Co. KG, , DE;
Abstract
A drive unit comprising an engine, a transmission, a hydrodynamic retarder comprised of a rotor impeller wheel, a stator impeller wheel and a retarder housing enclosing both. A coolant circuit having coolant also serves as a working fluid of the retarder, and a pump impeller wheel is arranged coaxially with the rotor impeller wheel of the retarder which is used to circulate the coolant. Given this configuration, the space needed by the units which perform the pumping and braking functions of the drive unit are minimized while the efficiency of the pumping and braking functions are maximized.