Cylinder for a two cycle engine
US4730540A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Jun 27, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49272
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The cylinder for a two cycle engine includes at least a port opened and closed by a piston in the cylinder the port being divided into a plurality of port portions by a rib extending longitudinally of the cylinder. The inner surface of the cylinder is formed with elongated concave recesses at the respective ends of the rib extending in the direction of extension thereof for regulating the pressing force per unit area of honing process. Each of the concave recesses has preferably substantially the same width as the width of the rib and the sum of the lengths of the concave recesses is preferably substantially the same as the length of the port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.