Vane pumping machine utilizing invar-class alloys for maximizing operating performance and reducing pollution emissions
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Aug 20, 2002
Grant Date -
Aug 16, 2001
app pub date -
Dec 18, 2000
filing date -
Mar 1, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A rotary-vane pumping machine has a core structure that includes a stator assembly defining a contoured surface of a stator cavity, a rotor spinning around a rotor shaft axis that is fixed relative to the stator cavity, and end plates disposed on either side of the rotor. The rotor has a plurality of radial vanes slots for housing a corresponding plurality of vanes that slide within the radial vane slot of the rotor. Each of the plurality of vanes has side walls, a tip portion, and a base portion, and the base portion has one or more tabs extending from at least one axial end of the vane. The plurality of vanes, stator cavity, and rotor define a plurality of chamber cells. The core structure is substantially made of low coefficient of thermal expansion Invar materials to achieve precise non-contact sealing clearances between components of the machine.
First Claim
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Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| US | A | US6162034 | Mar 01, 1999 |
| WO | A1 | WO2000052306 | Feb 28, 2000 |
| AU | A | AU3382200 | Feb 28, 2000 |
International Classification(s)
- 2000 Application Filing Year
- F04C Class
- 87 Applications Filed
- 38 Patents Issued To-Date
- 43.68 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 20 Citation Count
- F04C Class
- 83.22 % this patent is cited more than
- 23 Age
