Patent US3672786A successfully refreshed from Google Patents.
US3672786A
Expired / Lapsed
US
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Capacity control mechanism for centrifugal gas compressors
Assignee: Carrier Corp
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Filing: 1970-11-02
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Granted: 1972-06-27
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Expires: 1990-11-02
Abstract
Abstract A PAIR OF CAPACITY CONTROL DAMPER PLATES OF SEMI-CIRCULAR FORM ARE MOUNTED FOR MOVEMENT ABOUT A COMMON PIVOT IN THE GAS INTAKE PASSAGE OF A CENTRIFUGAL COMPRESSOR. THE ADJACENT STRAIGHT OR DIAMETRICAL EDGES OF THE PLATES EXTEND NORMAL TO THE AXIS OF THE PIVOT. A POWERED ACTUATOR IS MOUNTED UPSTREAM FROM THE VALVE PLATES AND IS CONNECTED TO THE SAME BY LINKS. THE PLATES ARE MOVED IN UNISON IN OPPOSITE DIRECTIONS ABOUT THE PIVOT BY THE ACTUATOR, BETWEEN POSITIONS WHEREIN THE PLATES EXTEND TRANSVERSELY ACROSS THE PASSAGE AND A POSITION IN WHICH THE PLATES ARE PARALLEL WITH THE PASSAGE.
Inventors
- 👤 Gordon L Mount
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:11
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/02; F04D27/0253; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/46; F04D29/462; F04D29/464; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/51; F05D2260/00; F05D2260/14
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |