Patent · US Expired

Belt-type continuously variable transmission

US7044873B2 · kind B2 · utility

1Cited by
5References
5Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 29, 2003
Grant dateMay 16, 2006
Priority date
Expiry dateJun 8, 2024

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF16H2061/66295
  • WIPO fieldMechanical elements
  • WIPO sectorMechanical engineering

Abstract

A continuously variable transmission includes: (a) a drive pulley and a driven pulley in which the pulley width between a fixed disk and a movable disk may be varied in accordance with oil pressure, (b) a V-belt, which is wound around the drive pulley and driven pulley, and (c) a clutch for controlling the transmission of torque from an engine to the drive pulley. The continuously variable transmission further has a first spring for constantly urging the movable disk of the drive pulley to the fixed disk side and a second spring for constantly urging the movable disk of the driven pulley to the fixed disk side.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.