US3224246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low frequency hydrophone calibration
Assignee: Individual
•
Filing: 1963-07-15
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Granted: 1965-12-21
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Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 Schloss Fred
- 👤 Strasberg Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:21
CPC Classifications
G; G01; G01V; G01V13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
THE METHOD OF CALIBRATING A HYDROPHONE TO CLOSELY APPROXIMATE FREE FIELD TESTING OF SAID HYDRAOPHONE, COMPRISING THE STEPS OF: IMMERSING THE HYDROPHONE SO THAT ITS SENSITIVE ELEMENT IS AT A DEPTH H IS A COLUMN OF LIQUID OF DEPTH L THE SPEED OF ELASTIC WAVES IN SAID LIQUID BEING C, AND THE LIQUID DENSITY BEING P; TRANSMITTING VIBRATIONS TO THE LIQUID TO PRODUCE ELASTIC WAVES THEREIN WHILE HOLDING THE HYDROPHONE MOTIONLESS, WHEREBY THERE IS PRODUCED ACOUSTIC PRESSURE IN LIQUID COLUMN MEASURABLY AFFECTING THE HYDROPHONE OUTPUT, AND MEASURING THE ACCELERATION DISPLACEMENT AMPLITUDE OF THE VIBRATIONS IMPARTED TO THE IQUID COLUMN AT A FREQUENCY W.
Claim 2
Independent Claim
103 words
THE METHOD OF CALIBRATING A HYDROPHONE TO CLOSELY APPROXIMATE FREE FIELD TESTING OF SAID HYDRAOPHONE, COMPRISING THE STEPS OF: IMMERSING THE HYDROPHONE SO THAT ITS SENSITIVE ELEMENT IS AT A DEPTH H IS A COLUMN OF LIQUID OF DEPTH L THE SPEED OF ELASTIC WAVES IN SAID LIQUID BEING C, AND THE LIQUID DENSITY BEING P; TRANSMITTING VIBRATIONS TO THE LIQUID TO PRODUCE ELASTIC WAVES THEREIN WHILE HOLDING THE HYDROPHONE MOTIONLESS, WHEREBY THERE IS PRODUCED ACOUSTIC PRESSURE IN LIQUID COLUMN MEASURABLY AFFECTING THE HYDROPHONE OUTPUT, AND MEASURING THE ACCELERATION DISPLACEMENT AMPLITUDE OF THE VIBRATIONS IMPARTED TO THE IQUID COLUMN AT A FREQUENCY W.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |