Fluid rotary machine
US8608455B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 19, 2011 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Jul 19, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid rotary machine with a decreased footprint and a reduction in the number of parts. The fluid rotary machine has four heads wherein double-headed pistons are disposed inside cylinders in a crisscross arrangement. The rotational balance between rotational parts including the double-headed pistons is achieved only by first and second balance weights which are inserted and incorporated into both ends of a crank shaft coupled eccentrically to a shaft. The shaft is rotated for the double-headed pistons to linearly reciprocate in the cylinders. The fluid rotary machine has rotary valves for switching between the suction and discharge operations of the fluid for each cylinder chamber. The rotary valves are incorporated into a case to be coaxial and integrally rotatable with the shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.