Internal combustion engine piston and a method of producing the same
US4648308A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1985 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Mar 5, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49272
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is an internal combustion engine piston comprising a piston cap formed from a plurality of ceramic pieces, and a metal piston body, the piston cap being fixed to the top portion of the metal piston body, wherein the piston cap is made of one or more types of ceramic materials, and the ceramic pieces constituting the ceramic cap and the metal piston body are bonded together through a metallized layer coated onto the ceramic pieces and a metal-plated layer coated onto the metallized layer in such a manner that the bonding area between the ceramic piece or pieces and the metal piston body may be larger at a top central portion of the metal piston body than that between the ceramic piece or pieces and the metal piston body at another portion thereof. Also disclosed is a method of producing the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.