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:
Jan. 23, 2007
Filed:
Jul. 14, 2003
Daniel Laurent, Marly, CH;
David Olsommer, Fribourg, CH;
Pierre Varenne, Neyrus, CH;
Pierre-alain Magne, Belfaux, CH;
Daniel Laurent, Marly, CH;
David Olsommer, Fribourg, CH;
Pierre Varenne, Neyrus, CH;
Pierre-Alain Magne, Belfaux, CH;
Conception et Developpement Michelin, Givisiez, CH;
Abstract
Traction chain for an automobile vehicle including a wheel support (K) which supports a rotating hub designed to receive a drive wheel (W), and a rotating toothed wheel having the same rotation axis as that of the drive wheel, the toothed wheel meshing directly with the hub. At least two gear-wheels are permanently engaged with the toothed wheel and are rotated by an input shaft that is driven by an electric motor. A gear ratio change shifter mechanism is shiftable between first and second driving positions and a neutral non-driving position. In the first driving position the shifter mechanism directly connects the input shaft with one of the gear-wheels. In the second driving position the shifter mechanism indirectly connects the input shaft with the other gear-wheel through a transmission path which establishes a gear reduction ratio different from the gear ratio established by the direct connection.