Tappet with ceramic seat plate
US5168841A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1991 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Jul 19, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2107
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A tappet for an internal combustion engine comprises a tappet main body and a ceramic seat plate. The tappet main body is constituted by axially separated first and second parts which are made of different metallic materials. The first part is for installation in a hole of a cylinder block for sliding therein. The second part is for installation between a push rod and a cam. The metallic material for the second part is more wear-resistant than that of the first part. The ceramic seat plate is brazed to the second part, and the first and second parts are joined together by welding such as electron beam welding, laser beam welding, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.