Toroidal type continuously variable transmission
US6174257A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1998 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Jul 1, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C33/64
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An outer race of a thrust ball bearing supporting a thrust load applied to a power roller is rotatably supported around a displacement shaft. A portion in which the contact pressure between an outer race track and the rolling surface of a rolling member is high changes so that the fatigue of the outer race track does not progress locally. Also, the power roller and the outer race are subjected to predetermined treatment and working. Irrespective of a great thrust load applied during operation, stress is alleviated and the lubricating property of the portion of contact is made good to thereby prevent cracks or early wear from occurring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.