Planetary gear transmission systems or components – Input from independent power sources – Including electric motor input
Reexamination Certificate
2007-10-09
2007-10-09
Wright, Dirk (Department: 3681)
Planetary gear transmission systems or components
Input from independent power sources
Including electric motor input
Reexamination Certificate
active
11071406
ABSTRACT:
An electrically variable transmission includes: an input member to receive power from an engine; an output member; first and second motor/generators; and first and second differentially geared planetary gear sets each having first, second and third gear members. The input member is continuously connected to the first member of the first planetary gear set, and the output member is continuously connected to the first member of the second planetary gear set. The first motor/generator is continuously connected to the second member of the first planetary gear set, and selectively connected to the second member of the second planetary gear set. The second motor/generator is continuously connected with the third member of the second planetary gear set. A first torque transfer device selectively grounds the second member of the second planetary gear set. A second torque transfer device selectively connects the second member of the second planetary gear set to the second member of the first planetary gear set. An optional third torque transfer device selectively grounds the third member of the first planetary gear set. An optional fourth torque transfer device selectively connects at least two of the members together such that all members of the first planetary gear set rotate together at the same speed. An optional fifth torque transfer device selectively connects the third member of the first planetary gear set with the third member of the second planetary gear set.
REFERENCES:
patent: 2271058 (1942-01-01), Binns
patent: 6527658 (2003-03-01), Holmes et al.
patent: 6964627 (2005-11-01), Ai et al.
patent: 2002/0142876 (2002-10-01), Holmes et al.
patent: 2006/0046886 (2006-03-01), Holmes et al.
Hendrickson James D.
Holmes Alan G.
Klemen Donald
Schmidt Michael R.
Sowul Henryk
General Motors Corporation
Wright Dirk
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