Rotary vane machines with anti-friction positive bi-axial vane motion controls
US5160252A · kind A · utility
Inventor
Key dates
| Filing date | Jun 20, 1991 |
| Grant date | Nov 3, 1992 |
| Priority date | — |
| Expiry date | Jun 20, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S418/01
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid displacement machine of the vane type which can be operated as a compressor or motor utilizes a cylindrical rotor equipped with one or more tethered sliding vanes wherein the rotor and vane set is rotatably located eccentrically inside an internal conforming casing profile between opposing endplates to define enclosed variable volume compartments. [Each vane is fitted on opposite sides eith tethers which are pivotally-mounted remotely from the vane tips. The tethers engage, through anti-friction means, circular annuli located within the endplates which are eccentric with the hollow casing profile.] Anti-friction tether-to-annuli means are used, one in the form of freely-rotating caged roller bearings interposed between the tethers and the respective internal annuli, and another in the form of tethers equipped with trunnioned bearings which directly engage these internal annular surfaces. [Combinations of these anti-friction vane tethering means are also disclosed, including a compressor with a twin roller tether arrangement and one with a variable speed roller bearing retainer. The vane tethers engage both internal peripheries of the endplate annuli for the purpose of provi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.