Tappet in an internal combustion engine and method of manufacturing the same
US5269268A · kind A · utility
5Cited by
6References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1993 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Mar 26, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2107
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A tappet is used in a valve operating mechanism of a direct acting type in an internal combustion engine. A tip engaged with a center bore of an inner upper surface of a tappet body comprises upper and lower convex surfaces and a rounded upper circumferential corner having a certain curvature, thereby preventing concentration of stress even if the tip is subject to high compression load. Thus, durability and reliablity of the tappet are increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.