US3701088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demand sonobuoy
Assignee: Shell USA Inc
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Filing: 1970-06-18
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Granted: 1972-10-24
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Expires: 1990-06-18
Abstract
Abstract A demand sonobuoy having both sending and receiving radio equipment therein. The transmission of seismic data detected by a hydrophone connected to the demand sonobuoy is controlled by radio signal from a remote point.
Inventors
- 👤 Richard J Haase
- 👤 William L Roever
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:50
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
183 words
A demand sonobuoy system for use in seismic exploration, comprising: a sonobuoy having a hydrophone operatively connected thereto; amplifier means located in said sonobuoy and connected to said hydrophone for amplifying electrical signals generated by said hydrophone in response to seismic disturbances received by said hydrophone; radio transmission means located in said sonobuoy and connected to said amplifier means for transmitting said amplified electrical signal to remote points; radio receiver means located in said sonobuoy and operatively engaging said radio transmission means such that the timing and duration of transmissions from said radio transmissions means are controlled by the output signal of said radio receiver means; an integrator circuit connected between said radio receiver output and said radio transmission means and responsive to said radio receiver to supply a signal of predetermined amplitude to said radio transmission means when said radio receiver supplies an output signal greater in duration than some predetermined value; and attenuator means in said radio transmission means responsive to an output signal of predetermined amplitude of said integrator circuit to reduce the power output of said radio transmission means.
Claim 2
Dependent Claim
183 words
A demand sonobuoy system for use in seismic exploration, comprising: a sonobuoy having a hydrophone operatively connected thereto; amplifier means located in said sonobuoy and connected to said hydrophone for amplifying electrical signals generated by said hydrophone in response to seismic disturbances received by said hydrophone; radio transmission means located in said sonobuoy and connected to said amplifier means for transmitting said amplified electrical signal to remote points; radio receiver means located in said sonobuoy and operatively engaging said radio transmission means such that the timing and duration of transmissions from said radio transmissions means are controlled by the output signal of said radio receiver means; an integrator circuit connected between said radio receiver output and said radio transmission means and responsive to said radio receiver to supply a signal of predetermined amplitude to said radio transmission means when said radio receiver supplies an output signal greater in duration than some predetermined value; and attenuator means in said radio transmission means responsive to an output signal of predetermined amplitude of said integrator circuit to reduce the power output of said radio transmission means.
Claim 3
Dependent Claim
99 words
The demand sonobuoy system of claim 1 wherein said radio receiver means includes: a timing circuit connected to the output of said radio receiver and adapted to supply a timed output signal in response to the output signal of said radio receiver; a power supply; and switching means connected between said power supply and radio receiver, said radio transmission means and the output of said timing circuit such that said switching means connects said power supply to said radio transmission means for the duration of said timed output pulse and otherwise connects said power supply to said radio receiver.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |