Preload and torsional backlash management for a continuously variable transmission device

US9702459B2 · kind B2 · utility

Assignee

• Orbital Traction, Ltd. · US

Inventors

• Joseph D. Kliewer · Houston, US
• Mark M. Koeroghlian · Austin, US

Key dates

• Filing date: Feb 11, 2015
• Grant date: Jul 11, 2017
• Expiry date: Apr 5, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H15/506
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A radially inner race for a continuously variable transmission includes a first inner race structure and a second inner race structure spaced along an axis wherein at least one of the first inner race structure or the second inner race structure is axially movable. A sun shaft is coupled to the radially inner race and planetary members in rolling contact with the radially inner race, and a torsion damping mechanism is coupled to the first inner race structure to apply torque between the first inner race structure and the sun shaft to reduce a transition amplitude during a torque impulse.