Patent US3240422A successfully refreshed from Google Patents.
US3240422A
Expired / Lapsed
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Method of and apparatus for the prevention of surging with axial compressors
Assignee: BBC Brown Boveri AG Germany
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Filing: 1963-03-27
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Granted: 1966-03-15
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Expires: 1983-03-27
Abstract
No abstract record available.
Inventors
- 👤 Pettersen Johan
- 👤 Baumann Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:27
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/02; F04D27/0207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN AN AXIAL FLOW COMPRESSOR HAVING AT LEAST ONE STAGE COMPRISING A ROW OF STATIONARY GUIDE BLADING AND AN ADJACENT ROW OF BLADING MOUNTED ON THE COMPRESSOR ROTOR, THE METHOD OF PREVENTING SAID COMPRESSOR FROM SURGING WHICH COMPRISES THE STEP OF MEASURING VIBRATIONS INDUCED IN THE BLADING AS A RESULT OF FLUID FLOW THERETHROUGH AND UTILIZING ONLY SUCH MEASURED VIBRATIONS AS REACH A PREDETERMINED AMPLITUDE FOR REGULATING FLUID FLOW THROUGH THE COMPRESSOR IN SUCH SENSE AS TO REDUCE ITS TENDENCY TO SURGE.
Claim 2
Dependent Claim
82 words
IN AN AXIAL FLOW COMPRESSOR HAVING AT LEAST ONE STAGE COMPRISING A ROW OF STATIONARY GUIDE BLADING AND AN ADJACENT ROW OF BLADING MOUNTED ON THE COMPRESSOR ROTOR, THE METHOD OF PREVENTING SAID COMPRESSOR FROM SURGING WHICH COMPRISES THE STEP OF MEASURING VIBRATIONS INDUCED IN THE BLADING AS A RESULT OF FLUID FLOW THERETHROUGH AND UTILIZING ONLY SUCH MEASURED VIBRATIONS AS REACH A PREDETERMINED AMPLITUDE FOR REGULATING FLUID FLOW THROUGH THE COMPRESSOR IN SUCH SENSE AS TO REDUCE ITS TENDENCY TO SURGE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |