Multi-mode infinitely variable transmission

US9206885B2 · kind B2 · utility

Assignee

• Deere & Company · US

Inventors

• Andrew K. Rekow · Cedar Falls, US
• Rainer Gugel · Mannheim, DE
• Dennis L. Jeffries · Waterloo, US
• David Mueller · Blankenloch, DE

Key dates

• Filing date: Dec 31, 2013
• Grant date: Dec 8, 2015
• Expiry date: Apr 27, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S903/911
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An infinitely variable transmission includes a clutch, a brake and a first planetary gear set, including first and second components, and a double planetary gear set, including input and output components and additional third and fourth components. The first component receives power from an engine. The double planetary set sums mechanical power from the first planetary set and an infinitely variable power source (“IVP”). The third component receives mechanical power from a IVP. The second component directly transmits power to the input component. The clutch directly controls power transmission between the first and second components. The brake engages the fourth component to stop its rotation. The output component receives mechanical power directly from the input component and the fourth component. During operation of the engine, controlled actuation of the brake and the clutch causes the output component to be powered by the infinitely variable power source but not by the engine.