Method of roughening and coating the contact surface of a valve lifter
US5455078A · kind A · utility
12Cited by
1References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 27, 1993 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | Jul 27, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2303/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
After primary blasting is applied to the outer circumferential surface of a cylindrical valve lifter the upper end of which is closed with an abrasive to form a rough surface, a secondary blasting is applied to the rough surface with an abrasive which has particle size smaller than that of the first abrasive. Smaller irregularities are formed on the rough surface, and a coated layer is formed by thermal spraying on the surface, thereby increasing adhesive strength of the coated layer by anchoring effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.