Fluid compressor and motor vehicle refuelling apparatus
US8840377B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2007 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Oct 3, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B25/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid compressor 10 comprising a stator 22, having a bore shaped first chamber 26 and an annular second chamber 30, and a piston 18 comprising a central piston rod 36 having a first piston head 44 and a concentrically arranged cylindrical piston sleeve 38 having a second piston head 48. The stator 22 and piston 18 together define a first compression chamber 12, a second compression chamber 14 provided concentrically around the first chamber 12, and a third compression chamber 16 provided concentrically around the first chamber 12 and linearly with the second chamber 14. The compression chambers 12, 14, 16 are interconnected via intercooling conduits 72, 74. A hydraulic actuator 20 is coupled to the piston 18 by a hydraulic ram 82. During left to right movement of the piston 18 fluid enters the third chamber 16 and fluid is compressed in the second chamber 14.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.