Propeller shaft and production method for same
US11365765B2 · kind B2 · utility
2Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2017 |
| Grant date | Jun 21, 2022 |
| Priority date | — |
| Expiry date | Mar 10, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7035
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A low surface-roughness part is formed at a first tapered part, as a result, the roughness of an opening-edge of a groove part of an internal spline part that opens at the first tapered part is reduced, and surface pressure applied by the opening edge to a tooth of an external spline part can be reduced. As a result, the opening edge of the groove part of the internal spline part can be kept from digging into the tooth, and variation, between products, in the insertion load of a second shaft part can be suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.