US3122020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and machine for balancing rotors
Assignee: Carl Schenck AG
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Filing: 1961-09-13
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Granted: 1964-02-25
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Expires: 1981-09-13
Abstract
No abstract record available.
Inventors
- 👤 Hack Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:55
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/14; G01M1/16; G01M1/20; G01M1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
THE METHOD OF MEASURING UNBALANCE OF A ROTOR, WHICH COMPRISES ROTATING THE ROTOR BETWEEN TWO JOURNAL MEANS EACH ELASTICALLY DEFLECTABLE IN ALL DIRECTIONS WITHIN RESPECTIVE RADIAL PLANES TO OBTAIN ROTATIONAL OSCILLATION OF SAID STRUCTURE DUE TO UNBALANCE OF THE ROTOR, SUPERIMPOSING UPON THE ROTOR AN ADDITIONAL OSCILLATORY EXCITATION OF KNOWN FREQUENCY AND MAGNITUDE WHEREBY ADDITIONAL OSCILLATIONS ARE APPLIED TO SAID STRUCTURE, SEPARATELY SENSING THE OSCILLATIONS OF SAID STRUCTURE IN TWO COORDINATE DIRECTIONS IN EACH OF SAID PLANES AND TRANSLATING SAID OSCILLATIONS INTO RESPECTIVE VOLTAGES, PROVIDING A PHASE REFERENCE VOLTAGE IN SYNCHRONISM AND FIXED PHASE RELATION WITH THE ROTOR ROTATION, AND ELECTRICALLY COMBINING THE VOLTAGES AT EACH PLANE WITH EACH OTHER AND WITH A VOLTAGE CORRESPONDING TO THE ADDITIONAL OSCILLATION AND WITH THE PHASE REFERENCE VOLTAGE TO OBTAIN TWO RESULTANT VOLTAGES EACH DEPENDDENT UPON VOLTAGES FROM BOTH PLANES AND INDICATIVE OF UNBALANCE ONLY IN ONE PLANE.
Claim 2
Independent Claim
145 words
THE METHOD OF MEASURING UNBALANCE OF A ROTOR, WHICH COMPRISES ROTATING THE ROTOR BETWEEN TWO JOURNAL MEANS EACH ELASTICALLY DEFLECTABLE IN ALL DIRECTIONS WITHIN RESPECTIVE RADIAL PLANES TO OBTAIN ROTATIONAL OSCILLATION OF SAID STRUCTURE DUE TO UNBALANCE OF THE ROTOR, SUPERIMPOSING UPON THE ROTOR AN ADDITIONAL OSCILLATORY EXCITATION OF KNOWN FREQUENCY AND MAGNITUDE WHEREBY ADDITIONAL OSCILLATIONS ARE APPLIED TO SAID STRUCTURE, SEPARATELY SENSING THE OSCILLATIONS OF SAID STRUCTURE IN TWO COORDINATE DIRECTIONS IN EACH OF SAID PLANES AND TRANSLATING SAID OSCILLATIONS INTO RESPECTIVE VOLTAGES, PROVIDING A PHASE REFERENCE VOLTAGE IN SYNCHRONISM AND FIXED PHASE RELATION WITH THE ROTOR ROTATION, AND ELECTRICALLY COMBINING THE VOLTAGES AT EACH PLANE WITH EACH OTHER AND WITH A VOLTAGE CORRESPONDING TO THE ADDITIONAL OSCILLATION AND WITH THE PHASE REFERENCE VOLTAGE TO OBTAIN TWO RESULTANT VOLTAGES EACH DEPENDDENT UPON VOLTAGES FROM BOTH PLANES AND INDICATIVE OF UNBALANCE ONLY IN ONE PLANE.
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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |