Member with inner teeth and method of producing the same
US7641564B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2005 |
| Grant date | Jan 5, 2010 |
| Priority date | — |
| Expiry date | Aug 30, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S464/906
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Grooves as ball rolling grooves are formed in a side peripheral wall of a preparatory formed body that is to be an inner member. A recess opened so as to be continuous to curved bottom sections of the grooves, which face a through-hole, is formed in one end surface of the preparatory formed body. In carburizing, carburizing gas entering into space between the through-hole and a support shaft member flows through the recess after coming into contact with inner teeth, and is then discharged to the outside of the preparatory formed body via the curved bottom sections of the grooves. On the contrary, the carburizing gas having been in contact with the curved bottom sections of the grooves flows through the recess to come to be in contact with the inner teeth and is then discharged through the space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.