(19)
(11) EP 1 787 846 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
18.07.2007 Bulletin 2007/29

(43) Date of publication:
23.05.2007 Bulletin 2007/21

(21) Application number: 06023838.3

(22) Date of filing: 16.11.2006
(51) International Patent Classification (IPC): 
B60K 17/346(2006.01)
B60K 17/348(2006.01)
 B60K 23/04(2006.01)
B60K 6/04(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 16.11.2005 JP 2005331030

(71) Applicant: HITACHI, LTD.
Chiyoda-ku Tokyo 100-8280 (JP)

(72) Inventors:
  • Yokoyama, Atsushi, c/o Hitachi, Ltd., Intellectual Property Group
    Chiyoda-ku Tokyo 100-8220 (JP)
  • Yamakado, Makoto, c/o Hitachi, Ltd., Intellectual Property Group
    Chiyoda-ku Tokyo 100-8220 (JP)
  • Yamamoto, Tatsuyuki, c/o Hitachi, Ltd., Intellectual Property Group
    Chiyoda-ku Tokyo 100-8220 (JP)

(74) Representative: Beetz & Partner 
Steinsdorfstrasse 10
80538 München
80538 München (DE)

   


(54) Differential torque generator


(57) The application relates to varied torque distribution between driven wheels or driven axles. It provides a differential torque generator comprising a main differential (5) including drive shafts (7RR,7RL) and a supplemental differential (10) including first and second rotary members (14a,14b), driven by a motor (20) and each rotationally connected to the first and second shaft. The drive shafts (7RR,7RL) are arranged coaxially, as are the rotary members (14a,14b). The axes of rotation of the shafts (7RR,7RL) and rotary members (14a,14b), however, do not coincide.
Further independent claims are included for planetary gearsets used for driving the rotary members (14a,14b).