US3230506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure pulsation generator
Assignee: Mhd Res Inc
•
Filing: 1962-02-26
•
Granted: 1966-01-18
•
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 07:25
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
References Cited (Backward Citations)
US1806745A
Cited
GB191004967A
Cited
US1152697A
Cited
US1173957A
Cited
US1641664A
Cited
US1718303A
Cited
US2483768A
Cited
US2836033A
Cited
US2884375A
Cited
US2946217A
Cited
US3141099A
Cited
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 |