Disk for toroidal type continuously variable transmission
USRE39647E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2002 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Sep 4, 2022 |
Classification
- Technology area (CPC —)General
Abstract
The disk has a traction surface having a concave-arc-shaped cross section which is interposed between a small diameter end portion and a large diameter end portion. In the central portion of the end face of the disk on the small diameter end portion side, there is formed a through hole which extends through the disk up to the large diameter end portion side end face of the disk, while the inner peripheral surface of the through hole is used as an inside diameter surface of the disk. Here, when, among metal flows existing in the disk, a metal flow, which has such a positional relationship with respect to the surface of the disk that an angle θ formed between a metal flow on the traction surface side and the tangent of the traction surface is smaller than or equal to 30 degrees, is defined as a “metal flow along the disk surface”, the disk is structured such that the “metal flow along the disk surface” exists at least in the traction surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.