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US 5,980,410 AGranted
Electro-mechanical transmission
AssigneeCaterpillar Inc.
InventorsEric D. Stemler, Stephen C. Garnett
Life of this patent
Estimating the term…
Abstract
A electro-mechanical transmission includes an electrical section and a mechanical transmission to provide a continuously variable power flow through the transmission. The mechanical transmission includes a planetary gearing mechanism having three planetary gear sets and five members which interact with the electrical section and a gear change mechanism to provide a continuously variable output speed.
Claims20
A electro-mechanical transmission having an input and a output, the electro-mechanical transmission comprising:
- a first motor/generator;
- a second motor/generator;
- a planetary gearing mechanism having a first member being connected to one of the motor/generators and being selectively connected to the output, a second member being selectively connected to the output, a third member being connected to the input, a fourth member being selectively connected to the output, and a fifth member being connected to the other of the motor/generator;
- and
- a gear change mechanism selectively connects the members of the planetary gearing mechanism to the output for achieving various ratios.
2 more elements
Dependencies are inferred from the claim text.