Infinitely variable transmission
US6517461B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 2001 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Aug 8, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2037/0886
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In an infinitely variable transmission (IVT) for use with a vehicle, an output gear (3B) of a fixed speed ratio transmission (3) is joined to a planet carrier (5B) of a planetary gear set (5), and a gear (4A) which outputs the rotation of a continuously variable transmission (2) is joined to a sun gear (5A) of the planetary gear set (5). A ring gear (5C) of the planetary gear set (5) is joined to an IVT output gear (7) via a final output shaft (6). The gears are made of helical gears, and the tooth trace directions of the gears are set so that when a torque for driving the vehicle forward is transmitted from the engine to the drive shaft (11), the thrust force acting on the IVT output gear (7) is opposite to the thrust force acting on the ring gear (5C).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.