Variable speed transmission arrangement with an infinitely variable toroidal drive and a summing gear set of the planet wheel type

US7004877B2 · kind B2 · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Wolfgang Elser · Fairfax, US
• Steffen Henzler · Bingen, DE
• Dinh Cuong Nguyen · Eßlingen, DE

Key dates

• Filing date: Jan 2, 2004
• Grant date: Feb 28, 2006
• Expiry date: Feb 10, 2024

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2037/0886
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In a variable speed transmission arrangement including an infinitely variable drive having two toroidal input and toroidal output traction wheels with a central shaft connected for rotation with an input traction wheel and extending through the output and the other toroidal input traction wheel and being connected to a planet carrier of a planetary summing gear set while the toroidal traction output wheel is connected, by way of a hollow shaft receiving the central shaft, to the sun wheel of the planetary summing gear set, and the other toroidal traction input wheel is directly connected to the planet carrier by way of a rotational interlocking means rotationally interlocking the planet carrier and the other toroidal traction input wheel, but permitting relative axial movement to facilitate assembly.