Patent US3669579A successfully refreshed from Google Patents.
US3669579A
Expired / Lapsed
US
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Compressors
Assignee: Hydrovane Compressor Co Ltd
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Filing: 1970-07-28
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Granted: 1972-06-13
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Expires: 1990-07-28
Abstract
Abstract A COMPRESSOR OF THE ECCENTRIC VANE TYPE IN WHICH A MIXTURE OF COMPRESSED AIR AND OIL IS DELIVERED THROUGH A NUMBER OF PORTS DISTRIBUTED ALONG THE LENGTH OF THE COMPRESSOR STATOR INTO A CHAMBER WHICH AFFORDS A SUMP AND A DEFLECTING WALL ON WHICH THE OIL IS DEPOSITED. THEREAFTER THE COMPRESSED AIR PASSES THROUGH A SEPARTOR WHICH REMOVES THE REMAINING OIL FROM IT.
Inventors
- 👤 Alan Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:40
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/16; F04C; F04C18/00; F04C18/30; F04C18/34; F04C18/344; Y; Y10; Y10S; Y10S418/00; Y10S418/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |