Stirling cycle cryocooler with improved magnet ring assembly and gas bearings
US6880335B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2004 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Jan 28, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2309/001
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A piston assembly for use in a motor comprises a cylinder having a bore, an electrically conductive piston reciprocally disposed within the cylinder bore, a gas cavity formed within the piston, and one or more gas bearings associated with the piston, each of the one or more gas bearings including an aperture formed within the piston and an electrically conductive tubular member extending through the aperture, the tubular member having a lumen in communication between the gas cavity and the cylinder bore. The piston assembly may be used in connection with a motor used in a cryocooler that is driven by oscillating magnetic energy fields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.