Infinitely variable toroidal drive

US6547690B1 · kind B1 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Walter Kuhn · Friedrichshafen, DE
• Jürgen Wafzig · Bermatingen, DE

Key dates

• Filing date: Dec 29, 1999
• Grant date: Apr 15, 2003
• Expiry date: Dec 29, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H15/38
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An infinitely variable toroidal drive comprising a housing (1), an input shaft (3), a torque converter (34), two input discs (5, 15) with toroidal inner surfaces, two output discs (6, 16) with toroidal inner surfaces wherein one input disc and one output disc each form a pair and the two output discs are arranged next to each other with mirror symmetry, several friction wheels for transmitting a torque from one input disc to the corresponding output disc, an output shaft (10) and a gear wheel system (8, 9) being coupled via engaging gears (57) with an output disc (16).