US3649735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission system
Assignee: United States Department of the Navy
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Filing: 1955-08-17
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Granted: 1972-03-14
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Expires: 1975-08-17
Abstract
Abstract 1. A sonobuoy trainer comprising means producing a position analog of a simulated submarine, means producing a position analog of a simulated sonobuoy, combining means for producing a relative position analog voltage of simulated submarine from simulated sonobuoy, a variable gain amplifier biased by said relative position analog voltage, means producing said simulated submarine speed and course, modulating means conductively coupled to and operable with said last mentioned means and said variable gain amplifier to modulate the input to said variable gain amplifier in accordance with the movements of said simulated submarine and an FM modulator and transmitter coupled to and operable with the output of said variable gain amplifier.
Inventors
- 👤 William K Coburn
- 👤 Richard E Hillger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:24
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/56
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
A sonobuoy trainer comprising means producing a position analog of a simulated submarine, means producing a position analog of a simulated sonobuoy, combining means for producing a relative position analog voltage of simulated submarine from simulated sonobuoy, a variable gain amplifier biased by said relative position analog voltage, means producing said simulated submarine speed and course, modulating means conductively coupled to and operable with said last mentioned means and said variable gain amplifier to modulate the input to said variable gain amplifier in accordance with the movements of said simulated submarine and an FM modulator and transmitter coupled to and operable with the output of said variable gain amplifier.
Claim 2
Dependent Claim
109 words
A sonobuoy trainer comprising means producing a position analog of a simulated submarine, means producing a position analog of a simulated sonobuoy, combining means for producing a relative position analog voltage of simulated submarine from simulated sonobuoy, a variable gain amplifier biased by said relative position analog voltage, means producing said simulated submarine speed and course, modulating means conductively coupled to and operable with said last mentioned means and said variable gain amplifier to modulate the input to said variable gain amplifier in accordance with the movements of said simulated submarine and an FM modulator and transmitter coupled to and operable with the output of said variable gain amplifier.
Claim 3
Dependent Claim
135 words
A sonobuoy trainer comprising means producing a position analog of a simulated submarine, a plurality of means producing a plurality of position analogs of a plurality of simulateD sonobuoys, combining means for producing relative position analog voltages of said simulated submarine from each of said sonobuoys, a plurality of variable gain amplifiers each biased by a different relative position analog voltage, means producing said simulated submarine speed and course, modulating means conductively coupled to and operable with said last mentioned means and each of said variable gain amplifiers to modulate the input to each variable gain amplifier in accordance with the movements of said simulated submarine, amplifying means coupled to receive and operable with the outputs of all variable gain amplifiers and an FM modulator and transmitter coupled to and operable with said amplifying means.
Claim 4
Dependent Claim
135 words
A sonobuoy trainer comprising means producing a position analog of a simulated submarine, a plurality of means producing a plurality of position analogs of a plurality of simulateD sonobuoys, combining means for producing relative position analog voltages of said simulated submarine from each of said sonobuoys, a plurality of variable gain amplifiers each biased by a different relative position analog voltage, means producing said simulated submarine speed and course, modulating means conductively coupled to and operable with said last mentioned means and each of said variable gain amplifiers to modulate the input to each variable gain amplifier in accordance with the movements of said simulated submarine, amplifying means coupled to receive and operable with the outputs of all variable gain amplifiers and an FM modulator and transmitter coupled to and operable with said amplifying means.
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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) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |