Piston for internal combustion engines
US4581983A · kind A · utility
56Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 7, 1980 |
| Grant date | Apr 15, 1986 |
| Priority date | — |
| Expiry date | May 7, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49256
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a cooled composite piston having a cooling passage adjacent to the interface and a method of making same, the upper part consists of forged steel and is formed on its underside with ribs bearing on mating surfaces of the lower part. To improve the resistance to thermal and mechanical stresses, the upper part has been welded by means of charge carrier rays to the lower part, which consists of cast ferrous material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.