Patent US3292846A successfully refreshed from Google Patents.
US3292846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal compressor operation
Assignee: Phillips Petroleum Co
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Filing: 1964-03-30
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Granted: 1966-12-20
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Expires: 1984-03-30
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Harper
- 👤 Leland G Kitchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:49
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/02; F04D27/0207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A METHOD OF OPERATING A CENTRIFUGAL COMPRESSOR HAVING A RECYCLE LINE BETWEEN THE DISCHARGE AND THE INTAKE WHICH COMPRISES MEASURING THE DENSITY OF SAID DISCHARGE GAS, MEASURING THE SPEED OF SAID COMPRESSOR, AND THEN MANIPULATING THE RATE OF FLOW OF RECYCLE GAS FROM THE DISCHARGE OF SAID COMPRESSOR TO THE INTAKE OF SAID COMPRESSOR RESPONSIVE TO SAID DENSITY AND SPACED MEASUREMENTS TO MAINTAIN A FLOW THROUGH SAID COMPRESSOR SUFFICIENT TO PREVENT SURGING OF SAID COMPRESSOR.
Claim 2
Independent Claim
75 words
A METHOD OF OPERATING A CENTRIFUGAL COMPRESSOR HAVING A RECYCLE LINE BETWEEN THE DISCHARGE AND THE INTAKE WHICH COMPRISES MEASURING THE DENSITY OF SAID DISCHARGE GAS, MEASURING THE SPEED OF SAID COMPRESSOR, AND THEN MANIPULATING THE RATE OF FLOW OF RECYCLE GAS FROM THE DISCHARGE OF SAID COMPRESSOR TO THE INTAKE OF SAID COMPRESSOR RESPONSIVE TO SAID DENSITY AND SPACED MEASUREMENTS TO MAINTAIN A FLOW THROUGH SAID COMPRESSOR SUFFICIENT TO PREVENT SURGING OF SAID COMPRESSOR.
References Cited (Backward Citations)
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US1222352A
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FR493962A
Cited
FR559076A
Cited
US2295728A
Cited
US2339150A
Cited
US2404324A
Cited
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Cited
FR1277119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |