Patent US3230506A successfully refreshed from Google Patents.
US3230506A
Expired / Lapsed
US
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Pressure pulsation generator
Assignee: Mhd Res Inc
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Filing: 1962-02-26
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Granted: 1966-01-18
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Expires: 1982-02-26
Abstract
No abstract record available.
Inventors
- 👤 Emil J Hellund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:35
CPC Classifications
G; G08; G08B; G08B3/00; G08B3/06; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
APPARATUS OF THE CHARACTER DESCRIBED, COMPRISING A SOURCE OF ELECTRICAL ENERGY, AND MEANS FOR INJECTING ENERGY FROM SAID SOURCE INTO LIQUID FOR PRODUCING LOCAL THERMAL EXPANSION AND CONTRACTION OF THE LIQUID WITHOUT CHANGE OF PHASE THEREOF AND PRODUCTIVE OF A HIGH FREQUENCY PRESSURE PULSATION TRAVELING IN THE LIQUID, SAID MEANS INCLUDING A TRANSDUCER HAVING ELECTRODES IMMERSIBLE IN THE LIQUID AND SPACED FOR TRANSMITTING AN ELECTRICAL CURRENT PULSE AT A HIGH FREQUENCY TO THE LIQUID IN THE INTERELECTRODE SPACE, ONE ELECTRODE HAVING A LARGE NUMBER OF CLOSELY SPACED PERFORATIONS TO FREELY PASS THE
Claim 2
Dependent Claim
92 words
APPARATUS OF THE CHARACTER DESCRIBED, COMPRISING A SOURCE OF ELECTRICAL ENERGY, AND MEANS FOR INJECTING ENERGY FROM SAID SOURCE INTO LIQUID FOR PRODUCING LOCAL THERMAL EXPANSION AND CONTRACTION OF THE LIQUID WITHOUT CHANGE OF PHASE THEREOF AND PRODUCTIVE OF A HIGH FREQUENCY PRESSURE PULSATION TRAVELING IN THE LIQUID, SAID MEANS INCLUDING A TRANSDUCER HAVING ELECTRODES IMMERSIBLE IN THE LIQUID AND SPACED FOR TRANSMITTING AN ELECTRICAL CURRENT PULSE AT A HIGH FREQUENCY TO THE LIQUID IN THE INTERELECTRODE SPACE, ONE ELECTRODE HAVING A LARGE NUMBER OF CLOSELY SPACED PERFORATIONS TO FREELY PASS THE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |