Toroidal-type continuously variable transmission
US6325740A · kind A · utility
2Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2000 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Jul 14, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H15/38
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The hardness of the outer peripheral surface of a small-diameter portion 47 and one side surface of a collar portion 52, which respectively rub against a belleville spring 39a, is set at HRc45 or higher, thereby enhancing the wear resistance of these surfaces. On the other hand, the hardness of a fastening tubular portion 51 is set at HRc3O or lower, thereby making it difficult for the fastening tubular portion 51 to be damaged or cracked when it is fastened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.