Rotating/reciprocating cylinder positive displacement device
US6343575B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Oct 14, 1997 |
| Grant date | Feb 5, 2002 |
| Priority date | — |
| Expiry date | Oct 14, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/027
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This positive displacement device features relative rotation and translation of a piston and a cylinder where the rotation accomplishes a rotary valve function and the translation accomplishes a change in chamber volume function. The preferred embodiment is a ported, single-piston, four-stroke internal combustion engine with one moving part and low emissions, a sinusoidal cam on the cylinder is confined between two fixed cams relative to the generally fixed piston. The cam creates a four-stroke translational movement of the cylinder about the piston for each revolution of the cylinder. A transfer port on the cylinder facilitates movement of the intake charge from an intake port on the piston into the combustion chamber where it is compressed, ignited, and then removed by means of the transfer port and an exhaust port on the piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.