US3970940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overall equipment condition checking
Assignee: United States Department of the Navy
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Filing: 1960-01-28
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Granted: 1976-07-20
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Expires: 1980-01-28
Abstract
Abstract 1. An electrical system for checking the operational state of a plurality transmitters comprising, A. signal generating means, B. signal applying means for sequentially applying the output of said signal generating means to said plurality of transmitters, C. means for radiating the output of each of said transmitters, D. means for receiving the radiated energy, E. a coincidence detector, F. means for connecting said coincidence detector between said signal generating means and said receiving means, and G. an alarm circuit connected to said coincidence detector, whereby said alarm circuit will be actuated in the absence of a coincidence condition in said detector between the signal received from said generating means and the signal from said receiving means.
Inventors
- 👤 Douglas A. Venn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:28
CPC Classifications
H; H04; H04B; H04B17/00; H04B17/10; H04B17/15; H04B17/16; H04B17/191
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
An electrical system for checking the operational state of a plurality of transmitters comprising, a. signal generating means, b. signal applying means for sequentially applying the output of said signal generating means to said plurality of transmitters, c. means for radiating the output of each of said transmitters, d. means for receiving the radiated energy, e. a coincidence detector, f. means for connecting said coincidence detector between said signal generating means and said receiving means, and g. an alarm circuit connected to said coincidence detector, whereby said alarm circuit will be actuated in the absence of a coincidence condition in said detector between the signal received from said generating means and the signal from said receiving means.
Claim 2
Dependent Claim
117 words
An electrical system for checking the operational state of a plurality of transmitters comprising, a. signal generating means, b. signal applying means for sequentially applying the output of said signal generating means to said plurality of transmitters, c. means for radiating the output of each of said transmitters, d. means for receiving the radiated energy, e. a coincidence detector, f. means for connecting said coincidence detector between said signal generating means and said receiving means, and g. an alarm circuit connected to said coincidence detector, whereby said alarm circuit will be actuated in the absence of a coincidence condition in said detector between the signal received from said generating means and the signal from said receiving means.
Claim 3
Dependent Claim
144 words
An electrical testing system for checking the operational state of a plurality of signal receivers comprising, a. signal generating means, b. first sequence means for sequentially operating said signal generating means to provide a plurality of frequencies, c. means connected to the output of said signal generating means for radiating said frequencies, d. a plurality of receivers each connected to receive said radiated frequencies, e. a coincidence detector, f. means for sequentially applying the output of said signal generating means and the output of each of said receiving means to said coincidence detector, g. an alarm circuit, and h. means connecting said alarm circuit to said coincidence detector whereby upon detection by said coincidence detector of the absence of a coincidence condition between the output of said signal generating means and the output of each of said receivers, said alarm means will be actuated.
Claim 4
Dependent Claim
144 words
An electrical testing system for checking the operational state of a plurality of signal receivers comprising, a. signal generating means, b. first sequence means for sequentially operating said signal generating means to provide a plurality of frequencies, c. means connected to the output of said signal generating means for radiating said frequencies, d. a plurality of receivers each connected to receive said radiated frequencies, e. a coincidence detector, f. means for sequentially applying the output of said signal generating means and the output of each of said receiving means to said coincidence detector, g. an alarm circuit, and h. means connecting said alarm circuit to said coincidence detector whereby upon detection by said coincidence detector of the absence of a coincidence condition between the output of said signal generating means and the output of each of said receivers, said alarm means will be actuated.
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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |