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:
Apr. 17, 2012
Filed:
Nov. 02, 2007
Herbert Steinwender, Raaba, AT;
Franz Gratzer, Stallhofen, AT;
Gerald Schober, Langegg bei Graz, AT;
Herbert Steinwender, Raaba, AT;
Franz Gratzer, Stallhofen, AT;
Gerald Schober, Langegg bei Graz, AT;
MAGNA Powertrain AG & Co KG, Lannach, AT;
Abstract
The invention relates to a torque transmission unit for a motor vehicle with a permanently driven primary axle and a switchable secondary axle, comprising a first connecting part and a second connecting part. The invention furthermore comprises several lamellas that are divided into primary lamellas and secondary lamellas in an alternating arrangement. The unit further comprises a planetary gear system, comprising an at least first gear element, rotationally connected with the first connection part, a second gear element, rotationally connected with the second connection part, and a third gear element, rotationally connected with the primary lamellas. The secondary lamellas are rotationally connected with the first connection part, the second connection part or with a stationary housing part. The torque transmission unit further comprises at least one electric coil for producing a magnetic field, acting on a magnetorheoplogical medium, wherein each primary lamella and secondary lamella is surrounded at least on two sides by the magnetorheological medium. The planetary gear system induces a torque of the primary lamellas into acceleration with a turning movement of the second connecting part in relation to the first connecting part.