| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Bistable frequency fuze system for vt fuze | US28976063 | 1963-06-21 | US3913102A | 1975-10-14 | ROBINSON RICHARD C |
| 1. In a bistable frequency fuze system for variable time fuzes, the combination comprising: A. A RADIO FREQUENCY OSCILLATOR DETECTOR FOR PRODUCING OUTPUT SIGNALS IN RESPONSE TO RECEIVED SIGNALS APPEARING AS SIGNALS REFLECTED FROM A TARGET, B. A BISTABLE TRIGGER CIRCUIT BEING COUPLED TO SAID OSCILLATOR DETECTOR FOR PRODUCING FIRST AND SECOND OUTPUT VOLTAGES IN RESPONSE TO OUTPUT SIGNALS FROM SAID OSCILLATOR-DETECTOR, C. SWITCHING NETWORK CIRCUIT MEANS COUPLED TO SAID BISTABLE TRIGGER CIRCUIT AND TO SAID OSCILLATOR DETECTOR AND BEING RESPONSIVE SAID FIRST VOLTAGE TO CAUSE SAID OSCILLATOR TO OPERATE AT A FIRST FREQUENCY AND TO SAID SECOND VOLTAGE TO CAUSE SAID OSCILLATOR TO OPERATE AT A SECOND FREQUENCY.
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| 102 | Distance responsive circuit | US63555057 | 1957-01-22 | US3902173A | 1975-08-26 | REDCAY PAUL WILSON |
| 1. A proximity fuze, comprising a combination: an electron tube having at least an anode, a cathode, and a control grid; a resonant circuit connected to said electron tube elements to cause oscillations to be produced, variations in the loading of said resonant circuit varying the amplitude of said oscillations; a capacitor connected so that said capacitor is charged by grid rectification of said oscillations to a negative potential at a rate dependent upon the amplitude of said oscillations, said negative potential being applied to the grid of said electron tube to cause the blocking of said oscillations when the negative potential on said grid reaches a predetermined potential; a resistor effectively in parallel with said capacitor, said resistor having a resistance which allows said capacitor to charge to said predetermined potential, said resistor discharging said capacitor when said oscillations are blocked, the potential on said capacitor reducing from said predetermined potential to a potential where said oscillations are revived and the cycle repeated, said cycle repeating periodically so that the oscillations of said oscillator are periodically blocked, the pulses produced by the periodic blocking of the oscillations of said oscillator having a pulse repetition rate and pulse width which are functions of the amplitude of said oscillations; an antenna connected to said resonant circuit so that a change in the radiation resistance of said antenna varies the loading of said resonant circuit, said radiation resistance changing in response to target proximity; and means for employing the variations in the pulse repetition rate and the pulse width of said pulses to function said proximity fuze at a predetermined distance from a target, said last mentioned means comprising rectifier and filter means for converting said pulses into direct current pulses, means for limiting the amplitude of said direct current pulses, detection means for obtaining from the limited direct current pulses a signal having an amplitude which is a function of the pulse repetition rate and pulse width of said clipped direct current pulses, and means for utilizing said signal to fire said proximity fuze at a predetermined distance from a target.
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| 103 | Band pass integrator for proximity fuses | US69088057 | 1957-10-17 | US3895580A | 1975-07-22 | TEDDER PAUL M; TEDDER ADMINISTRATOR BY YVONNE |
| 1. A band pass integrator circuit for a proximity fuze comprising in combination: low frequency cutoff means located at the input of said circuit, first diode means for clamping at ground potential the positive peaks of an input signal applied to the input of said circuit, second diode and resistor means for providing partial clamping of the negative peaks of an input signal applied to the input of said circuit, said partial clamping causing said circuit to be desensitized in the presence of high frequency and high amplitude input signals, a capacitor charged to an initial voltage, said proximity fuze functioning when said capacitor discharges to a predetermined voltage, third diode means for causing the positive peaks of an input signal within the pass band of said circuit to discharge said capacitor, said capacitor discharging to said predetermined voltage when the positive peaks of an input signal within said pass band have a predetermined minimum value for a predetermined minimum time, and capacitor means connected to said third diode means to make said third diode means inoperable at frequencies outside of said pass band.
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| 104 | Range sensing target detecting device | US58349766 | 1966-09-29 | US3858207A | 1974-12-31 | MACOMBER B; GRAVELLE N |
| A target detecting device having a plurality of gate circuits and time delay computers for determining after intercept of a target, the optimum missile-target range to effect maximum target damage.
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| 105 | Radio ranging utilizing doppler signals | US60759566 | 1966-12-28 | US3854134A | 1974-12-10 | JOHNSON R; PEPERONE S |
| A radio ranging system utilizing a frequency modulated continuous wave signal which derives range information from the mixed product of the received and transmitted signals, from the proportion of Doppler signal in the mixed product. The received signal is mixed with the transmitted signal, and the output of the mixer is clipped. The Doppler signal is extracted from the clipped signal, and its amplitude is a measure of range.
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| 106 | Method of inducing negative - impedance effect, and devices based thereon | US60996967 | 1967-01-17 | US3853064A | 1974-12-10 | MCCRACKEN R |
| A semiconductor is made to exhibit a negative-impedance effect by applying a radio frequency field of the proper frequency to an electrode of the semiconductor device to vary a capacitance provided by the semiconductor device at the applied radio frequency. The capacitance of the semiconductor device varying at the applied radio frequency is connected in a resonant circuit which is tuned to a frequency just above the applied radio frequency.
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| 107 | Computer interceptor proximity fuze | US42155073 | 1973-12-04 | US3850103A | 1974-11-26 | KRUPEN P |
| A pulsed radar proximity fuze for mounting into an interceptor missile for attacking a flying target comprising a computerized pulsed radar for measurement of range to the target, computation of the time at which the target will be at the point of closest approach to the interceptor missile, and computation of the miss distance between the interceptor missile and the target. The fuze from this information which is stored and computed by a computer, controls the instance of detonation of the missile warhead to achieve maximum lethal effect. The computer calculates tau, the ratio of the separation between the interceptor missile and the target to the relative velocity of the target with respect to the interceptor. When the absolute value of tau is an extremum, tau being a time value, the time remaining to go to the point of closest approach from the occurrence of the extremum value of tau is one half of the absolute value of that extremum value. A clock in the computer counts the time from extremum tau to point of closest approach and appropriately issues a trigger signal to the detonator. By storing the value of the fragment velocity, the computer may be set to allow for this value and thus institute a time delay such that such fragments encounter the target at the point of closest approach.
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| 108 | Transistor doppler detector for loop type oscillator | US35512773 | 1973-04-27 | US3840876A | 1974-10-08 | STANN B |
| A loop type oscillator is electrically and physically connected with a transistor detector to form a doppler detection network. A single loop is used to radiate RF energy from the oscillator, which is returned to the loop after reflection from an object. The transistor detector stage employs a sample section of the loop as an inductance between the base and emitter terminals thereof. A detector output resistor converts doppler perturbations to a voltage for processing by further utilization means.
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| 109 | Switching arrangement for electrical fuses | US3793956D | 1972-01-07 | US3793956A | 1974-02-26 | NORDGREN L |
| A reversible switching arrangement for a projectile capable of being detonated upon impact with a target on the one hand and at a predetermined distance from the target on the other hand. The arrangement comprises an hermetically sealed envelope adapted to be mounted at the nose of the projectile. The envelope comprises a nose and an abutting base section, that are rotated about the longitudinal axis of the projectile relative to each other to switch between the impact and the proximity fuse circuits.
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| 110 | Fuze having a high resistance to countermeasures | US3781884D | 1958-04-23 | US3781884A | 1973-12-25 | HORTON B |
| 2. A noise-modulated radio proximity fuze comprising in combination: a transmitter radiating energy towards a target, a source of white noise having a gaussian probability distribution of amplitudes with a mean amplitude of zero and a predetermined peak-to-peak noise voltage, a linear frequency shaping network connected to said source to frequency-shape said noise to a predetermined frequency spectrum, means connecting said network to said transmitter so that the frequency-shaped noise linearly frequency modulates said transmitter, means for receiving the energy reflected from the target, mixer means to which the received energy and a sample of the transmitted energy are fed, said mixer means producing a signal which is the instantaneous difference-frequency between transmitted and received energy and in which the frequency spectrum of the mixer output signal is dependent upon target distance amplifier means connected to the output of said mixer means for amplifying the mixer output signal, discriminator means connected to the output of said amplifier, for producing an output signal which is a distance correlation of the frequency spectrum of the mixer output signal firing circuit means connected to the output of said discriminator means, said firing circuit means producing a firing pulse when the output of said discriminator means corresponds to a predetermined firing distance, and detonation means connected to the output of said firing circuit means so as to provide detonation when said firing circuit produces a firing pulse.
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| 111 | Mine-actuating system using one-shot mv timing circuit and timed mv feedback inhibitor | US3763780D | 1971-12-16 | US3763780A | 1973-10-09 | KASINOFF H |
| This invention relates to a mine actuating system which becomes operable upon receiving electro-magnetic radiation pulses from a proximity detector. The device utilizes an electronic gating means coupled to an inhibiting means and a fire control means for providing an initiating voltage pulse to sequentially fire a plurality of electrically connected electro-explosive devices.
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| 112 | Overriding impact proximity fuze | US3747531D | 1958-02-04 | US3747531A | 1973-07-24 | POWELL R |
| 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.
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| 113 | Pulse doppler fuze | US22031251 | 1951-04-10 | US3732564A | 1973-05-08 | KUCK J; MCCORD W |
| 1. In a proximity fuze circuit, an antenna a normally ineffective superregenerative radio frequency oscillator coupled to said antenna, said oscillator generating a radio signal to be radiated by said antenna and developing a detected output correlative to the difference between said generated signal and any reflected portion thereof intercepted by said antenna during the period of effectiveness of said oscillator, a multivibrator coupled to said oscillator for applying periodic impulses of a constant duration and repetition rate thereto thereby rendering said oscillator effective for a predetermined period after each of the applied impulses, a second radio frequency oscillator coupled to said superregenerative oscillator and operating at substantially one-half of the natural frequency of said superregenerative oscillator, a source of electricity energizing said superregenerative oscillator, said second oscillator, and said multivibrator, said second oscillator providing a second harmonic signal to said superregenerative oscillator having an amplitude level large relative to the level of any spurious noises thereby to effect constancy in the initiation of each period of effectiveness and to render said detected output insensitive to weak external signals, such as spurious jamming signals.
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| 114 | Controlled variable time radio proximity fuze | US24746251 | 1951-09-20 | US3699892A | 1972-10-24 | KOPEC JOHN C; SCHMITT HENRY O JR; TENNEY FREDERICK H |
| 1. In a radio-controlled proximity fuze having a portion adapted to be rotated to set effective target time, a clock within said fuze adapted to be started when a projectile containing said fuze is fired, said rotatable portion being provided with at least two pairs of electrical contacts the first of which is adapted when short-circuited to close an electrical circuit to activate said fuze and the second of which is adapted when short-circuited to maintain said fuze unarmed, and means short-circuiting said second pair during a portion of the flight of the projectile and rotatably driven by said clock for sequentially short-circuiting said first pair and maintaining said electrical circuit closed and removing the short circuit across said second pair after predetermined intervals in flight which are functions of said affective target time.
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| 115 | Composite shell with ceramic base | US3641936D | 1970-05-27 | US3641936A | 1972-02-15 | BARNETT CHARLES W H |
| An explosive shell whose detonation is initiated by RF energy includes a ceramic spacer which separates, both physically and electrically, the two elements of the antenna and provides a mounting base and protection for the oscillator and associated components and wherein one element of the antenna is both led through the ceramic spacer and flushly disposed on the rear face of the spacer.
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| 116 | Dual channel doppler frequency-selective fuze system | US56703756 | 1956-02-21 | US3614781A | 1971-10-19 | LICHTMAN SAMUEL W |
| A frequency-selective fuze system comprising means for transmitting an RF signal and receiving an echo signal modified by the doppler frequencies resulting from the relative velocity between a missile carrying the fuze and a target aircraft means for deriving the doppler frequency spectrum from said received signal, means for disassociating the spectrum into two spectral bands consisting of low frequency components of the doppler signal and high-frequency components of the doppler signal, and means for initiating a burst signal in response to a coincident combination of said low frequency components and a particular portion of said high-frequency components.
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| 117 | Simplified proximity fuze and/or howitzer shells | US1147848 | 1948-02-27 | US3611940A | 1971-10-12 | HOPKINS JOHN J; THAYER ROBERT H |
| A novel electrical system relating to a proximity fuze which provides rectifying and capacitive amplification as a substitute for tubes.
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| 118 | Proximity sensing devices | US3594792D | 1968-10-10 | US3594792A | 1971-07-20 | GOWLER EDMUND JOHN; MCDONALD PATRICK ANTHONY |
| An improved proximity fuse is described in which an oscillator circuit supplies electrical oscillations to a radiating and receiving antenna. In the presence of a target, the impedance of the antenna, and therefore the current drawn by the oscillator circuit changes due to interaction between radiated and reflected energy. At target-to-antenna distances of less than half wavelength of the electrical oscillation, the impedance variation is substantially greater than that at greater distances and is dependent upon the angle of approach of antenna and target. If the two are moving parallel one to the other, so that a missile carrying the fuse would pass a target without hitting it the antenna impedance (and therefore the current drawn by the oscillator) increases sharply; conversely, if the two are approaching head-on corresponding to a direct hit condition, the impedance (and current) decreases sharply. A trigger circuit is coupled to the oscillator circuit by a sensing means which produces a signal dependent on changes in the current drawn by the oscillator circuit. If the said signal is large enough to overcome a predetermined bias it causes triggering of the trigger circuit. The trigger is therefore not triggered until the distance from the target is less than a half of the wavelength of the radiated oscillation and then only on a near miss condition. Another trigger may be provided, set for the direct hit condition.
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| 119 | Oscillator-detector device | US19796250 | 1950-11-28 | US3524410A | 1970-08-18 | ERATH LOUIS W; PLOTKIN GERALD N |
| 120 | Combined oscillator and folded slot antenna for fuze useful in small projectiles | US63374867 | 1967-04-26 | US3394373A | 1968-07-23 | MAKRANCY STEPHEN L |
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