US4032918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual channel radio frequency fuzing system
Assignee: United States Department of the Navy
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Filing: 1964-04-30
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Granted: 1977-06-28
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Expires: 1984-04-30
Abstract
Abstract 1. In a dual-channel radio frequency fuzing system the combination comprig: A. an oscillator circuit including a loop antenna tank circuit adapted to operate at a first predetermined frequency in response to a first modulating signal having a first repetition rate, B. circuit means coupled to the tank circuit of said oscillator for causing said oscillator to operate at a second predetermined frequency in response to a modulating signal derived from said first modulating signal and having a repetition rate different than said first repetition rate.
Inventors
- 👤 George F. Masin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:32
CPC Classifications
F; F42; F42C; F42C13/00; F42C13/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
85 words
In a dual-channel radio frequency fuzing system the combination comprising: (a) an oscillator circuit including a loop antenna tank circuit adapted to operate at a first predetermined frequency in response to a first modulating signal having a first repetition rate, (b) circuit means coupled to the tank circuit of said oscillator for causing said oscillator to operate at a second predetermined frequency in response to a modulating signal derived from said first modulating signal and having a repetition rate different than said first repetition rate.
Claim 2
Dependent Claim
85 words
In a dual-channel radio frequency fuzing system the combination comprising: (a) an oscillator circuit including a loop antenna tank circuit adapted to operate at a first predetermined frequency in response to a first modulating signal having a first repetition rate, (b) circuit means coupled to the tank circuit of said oscillator for causing said oscillator to operate at a second predetermined frequency in response to a modulating signal derived from said first modulating signal and having a repetition rate different than said first repetition rate.
Claim 3
Dependent Claim
83 words
In a dual-channel radio frequency fuzing system the combination comprising: (a) an oscillator circuit including a radiating and receiving loop antenna adapted to operate at a first predetermined frequency in response to a first modulating signal having a first repetition rate, (b) circuit means coupled to said loop antenna for causing said oscillator to operate at a second frequency in response to a second modulating signal derived from said first modulating signal and having a repetition rate different than said first repetition rate.
Claim 4
Dependent Claim
83 words
In a dual-channel radio frequency fuzing system the combination comprising: (a) an oscillator circuit including a radiating and receiving loop antenna adapted to operate at a first predetermined frequency in response to a first modulating signal having a first repetition rate, (b) circuit means coupled to said loop antenna for causing said oscillator to operate at a second frequency in response to a second modulating signal derived from said first modulating signal and having a repetition rate different than said first repetition rate.
Claim 5
Dependent Claim
103 words
In a dual-channel, dual frequency radio fuzing system comprising: (a) an oscillator circuit including a radiating and receiving loop antenna adapted to operate at a first predetermined frequency in response to a first modulating signal having a first repetition rate, (b) said loop antenna including voltage responsive variable capacitor means, (c) circuit means coupled to said variable capacitor means for causing the reactance of said loop antenna to change the operating frequency of said oscillator to a second frequency in response to a second modulating signal derived from said first modulating signal and having a repetition rate different than said first repetition rate.
Claim 6
Dependent Claim
103 words
In a dual-channel, dual frequency radio fuzing system comprising: (a) an oscillator circuit including a radiating and receiving loop antenna adapted to operate at a first predetermined frequency in response to a first modulating signal having a first repetition rate, (b) said loop antenna including voltage responsive variable capacitor means, (c) circuit means coupled to said variable capacitor means for causing the reactance of said loop antenna to change the operating frequency of said oscillator to a second frequency in response to a second modulating signal derived from said first modulating signal and having a repetition rate different than said first repetition rate.
Claim 7
Dependent Claim
115 words
In a dual-channel, dual frequency fuzing system the combination comprising: (a) an oscillator comprising an oscillator tube and a loop antenna tank circuit, (b) an input terminal coupled to said oscillator tube and adapted to have a first modulating voltage of a predetermined repetition rate of pulses for exciting said oscillator into oscillation at a first frequency, (c) circuit means coupled to said input terminal and to said loop antenna tank circuit for applying a second modulating voltage derived from said first modulating voltage and being of a predetermined repetition rate of pulses different than said first predetermined repetition rate for changing the reactance of said loop antenna and the operating frequency of said oscillator.
Claim 8
Dependent Claim
115 words
In a dual-channel, dual frequency fuzing system the combination comprising: (a) an oscillator comprising an oscillator tube and a loop antenna tank circuit, (b) an input terminal coupled to said oscillator tube and adapted to have a first modulating voltage of a predetermined repetition rate of pulses for exciting said oscillator into oscillation at a first frequency, (c) circuit means coupled to said input terminal and to said loop antenna tank circuit for applying a second modulating voltage derived from said first modulating voltage and being of a predetermined repetition rate of pulses different than said first predetermined repetition rate for changing the reactance of said loop antenna and the operating frequency of said oscillator.
Claim 9
Dependent Claim
18 words
The fuzing system of claim 4 wherein said loop antenna tank circuit includes voltage responsive variable capacitor means.
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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |