Patent EP0235750A2 successfully refreshed from Google Patents.
US3747531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overriding impact proximity fuze
Assignee: United States Department of the Navy
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Filing: 1958-02-04
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Granted: 1973-07-24
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Expires: 1978-02-04
Abstract
Abstract 1. A fuze for effecting destruction of a target by igniting an explosive vehicle comprising means for radiating an electromagnet wave and for intercepting a target reflected portion thereof, first circuit means for generating said electromagnetic wave and for developing an output signal having a frequency correlative to the frequency difference between the radiated and reflected waves, said first circuit means being responsive to said radiating and intercepting means, second circuit means connected to said first circuit means to produce a variable potential signal indicative of the frequency of said output signal, electrostatically actuated means coupled to said second circuit means for selectively rendering said second circuit means nonresponsive to said output signal, and means for alternatively effecting ignition of the explosive vehicle by said potential signal or by target impact of the explosive vehicle, said last named means being responsive to said second circuit means.
Inventors
- 👤 R Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:11
CPC Classifications
F; F42; F42C; F42C13/00; F42C13/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
145 words
A fuze for effecting destruction of a target by igniting an explosive vehicle comprising means for radiating an electromagnetic wave and for intercepting a target reflected portion thereof, first circuit means for generating said electromagnetic wave and for developing an output signal having a frequency correlative to the frequency difference between the radiated and reflected waves, said first circuit means being responsive to said radiating and intercepting means, second circuit means connected to said first circuit means to produce a variable potential signal indicative of the frequency of said output signal, electrostatically actuated means coupled to said second circuit means for selectively rendering said second circuit means non-responsive to said output signal, and means for alternatively effecting ignition of the explosive vehicle by said potential signal or by target impact of the explosive vehicle, said last named means being responsive to said second circuit means.
Claim 2
Dependent Claim
145 words
A fuze for effecting destruction of a target by igniting an explosive vehicle comprising means for radiating an electromagnetic wave and for intercepting a target reflected portion thereof, first circuit means for generating said electromagnetic wave and for developing an output signal having a frequency correlative to the frequency difference between the radiated and reflected waves, said first circuit means being responsive to said radiating and intercepting means, second circuit means connected to said first circuit means to produce a variable potential signal indicative of the frequency of said output signal, electrostatically actuated means coupled to said second circuit means for selectively rendering said second circuit means non-responsive to said output signal, and means for alternatively effecting ignition of the explosive vehicle by said potential signal or by target impact of the explosive vehicle, said last named means being responsive to said second circuit means.
Claim 3
Dependent Claim
140 words
A fuze for effecting destruction of a target by igniting an explosive vehicle comprising an oscillator for generating an electromagnetic wave signal, an antenna coupled to said oscillator for radiating said signal and for receiving a target reflected portion thereof, a detector coupled to said oscillator for developing an output signal having an instantaneous frequency correlative to the difference between the radiated and reflected signals, an amplifier coupled to said oscillator and detector for developing a triggering signal in response to an output signal of a predetermined instantaneous frequency, electrostatically actuated circuit means coupled to said amplifier for selectively rendering said amplifier non-responsive to said output signal, impact responsive means and circuit means for alternatively effecting ignition of the explosive vehicle by said triggering signal or said impact responsive means, said last named circuit means being coupled to said amplifier.
Claim 4
Dependent Claim
140 words
A fuze for effecting destruction of a target by igniting an explosive vehicle comprising an oscillator for generating an electromagnetic wave signal, an antenna coupled to said oscillator for radiating said signal and for receiving a target reflected portion thereof, a detector coupled to said oscillator for developing an output signal having an instantaneous frequency correlative to the difference between the radiated and reflected signals, an amplifier coupled to said oscillator and detector for developing a triggering signal in response to an output signal of a predetermined instantaneous frequency, electrostatically actuated circuit means coupled to said amplifier for selectively rendering said amplifier non-responsive to said output signal, impact responsive means and circuit means for alternatively effecting ignition of the explosive vehicle by said triggering signal or said impact responsive means, said last named circuit means being coupled to said amplifier.
Claim 5
Dependent Claim
156 words
A fuze for effecting destruction of a target by detonation of a projectile comprising antenna means for radiating an electromagnetic wave signal and for intercepting a target reflected portion thereof, first circuit means connected to said antenna means for generating said signal and for developing an output signal of a frequency proportional to the frequency difference between the generated and reflected signals, tuned circuit means connected to said first circuit means to produce a variable potential signal, said potential signal being indicative of the frequency of said output signal, electrostatically actuated circuit means including an electrometer for selectively developing a potential signal to render said tuned circuit means non-responsive to said output signal, normally ineffective firing circuit means for detonating the projectile upon being rendered effective by said variable potential signal, and means for rendering said firing circuit means effective upon target impact of the projectile, said last named means connected to said tuned circuit means.
Claim 6
Dependent Claim
156 words
A fuze for effecting destruction of a target by detonation of a projectile comprising antenna means for radiating an electromagnetic wave signal and for intercepting a target reflected portion thereof, first circuit means connected to said antenna means for generating said signal and for developing an output signal of a frequency proportional to the frequency difference between the generated and reflected signals, tuned circuit means connected to said first circuit means to produce a variable potential signal, said potential signal being indicative of the frequency of said output signal, electrostatically actuated circuit means including an electrometer for selectively developing a potential signal to render said tuned circuit means non-responsive to said output signal, normally ineffective firing circuit means for detonating the projectile upon being rendered effective by said variable potential signal, and means for rendering said firing circuit means effective upon target impact of the projectile, said last named means connected to said tuned circuit means.
Claim 7
Dependent Claim
153 words
A fuze for effecting demolition of a target by detonation of a projectile comprising antenna means for radiating an electromagnetic wave signal and for intercepting a target relfected portion thereof, first circuit means connected to said antenna means for generating said signal and for developing a first output signal of a frequency corresponding to the frequency difference between the generated and reflected signals, selective amplifer means connected to said first circuit means for producing a triggering signal in response to a predetermined frequency of the first output signal, firing circuit means for effecting detonation of the projectile in response to said triggering signal applied thereto, means for producing an electrostatic field, an electrometer tube operatively coupled to said last recited means and to said amplifier means for developing a second output signal in response to distortion of said electrostatic field for rendering said selective amplifier circuit means Non-responsive to said first output signal.
Claim 8
Dependent Claim
153 words
A fuze for effecting demolition of a target by detonation of a projectile comprising antenna means for radiating an electromagnetic wave signal and for intercepting a target relfected portion thereof, first circuit means connected to said antenna means for generating said signal and for developing a first output signal of a frequency corresponding to the frequency difference between the generated and reflected signals, selective amplifer means connected to said first circuit means for producing a triggering signal in response to a predetermined frequency of the first output signal, firing circuit means for effecting detonation of the projectile in response to said triggering signal applied thereto, means for producing an electrostatic field, an electrometer tube operatively coupled to said last recited means and to said amplifier means for developing a second output signal in response to distortion of said electrostatic field for rendering said selective amplifier circuit means Non-responsive to said first output signal.
Claim 9
Dependent Claim
28 words
A fuze according to claim 4 wherein said means for producing an electrostatic field includes a negatively charged conductor member insulatingly mounted on the casing of the projectile.
References Cited (Backward Citations)
GB625372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |