Variable ratio power transmission means
US4630495A · kind A · utility
37Cited by
9References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1983 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Feb 9, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19953
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
There is disclosed a continuously variable ratio power transmission means comprising truncated cones having concave parabolic circumferential surfaces which surfaces are in rolling contact one with another and which can be moved in a linear fashion to provide a variable ratio dependent on point extent of overlap and rolling contact. In a preferred form of the invention positive drive is provided by a rack or band of gear teeth being provided in a helix around the periphery of each cone in a constant helix or lead angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.