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US4214534A Expired / Lapsed US ⏱️ 0.0 years remaining

Command fuzing system

Assignee: United States Department of the Army
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Filing: 1969-06-30
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Granted: 1980-07-29
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Expires: 1989-06-30
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Abstract

Abstract A command fuzing system for use in conjunction with small, rapid-fire protiles. A narrow-beam radar transmitter, mounted on the weapon, transmits radar pulses along the trajectory of the projectiles. Each projectile contains a small horn antenna, a detector responsive to the radar pulses, an amplifier and a counter which is advanced with the receipt of each pulse. Upon receipt of a predetermined number of pulses, the counter triggers an SCR switch to cause detonation of the projectile in a well known manner. By adjusting the pulse rate of the radar transmitter the operator of the weapon can control the number of pulses reaching each projectile in a given time period, thereby controlling the point along the trajectory at which detonation occurs.

Inventors

  • 👤 Arnold A. Richter
  • 👤 Charles E. H. Edwards

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 17:38
CPC Classifications
F; F42; F42C; F42C11/00; F42C11/06; F42C13/00; F42C13/04; F42C13/047; F42C17/00; F42C17/04

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 101 words
A command fuzing system comprising: (a) A weapon capable of firing projectiles: (b) a pulse radar transmitter having a variable pulse rate and located adjacent said weapon for transmitting pulses along the trajectory of said projectiles; (c) projectiles capable of being fired from said weapon; (d) means in said projectiles to count each of said pulses and to cause detonation upon receipt of a predetermined number of said pulses; and (e) a bar handle located on said weapon for adjusting the pulse repetition frequency of said radar transmitter in order to change the point along the trajectory at which detonation occurs.
Claim 2
Dependent Claim 101 words
A command fuzing system comprising: (a) A weapon capable of firing projectiles: (b) a pulse radar transmitter having a variable pulse rate and located adjacent said weapon for transmitting pulses along the trajectory of said projectiles; (c) projectiles capable of being fired from said weapon; (d) means in said projectiles to count each of said pulses and to cause detonation upon receipt of a predetermined number of said pulses; and (e) a bar handle located on said weapon for adjusting the pulse repetition frequency of said radar transmitter in order to change the point along the trajectory at which detonation occurs.
Claim 3
Dependent Claim 20 words
The system of claim 1 further comprising a switch on said weapon for simultaneously activating said weapon and radar transmitter.
Claim 4
Dependent Claim 209 words
A weapon system comprising: an R.F. pulse transmitter having a transmitting antenna for transmitting pulses; a projectile having a fuze; said fuze including a receiving antenna disposed within a central core of the aft end of said projectile and having a maximum gain to the rear of said projectile for receiving pulses transmitted from said transmitter; an R.F. detector having an input terminal coupled to said receiving antenna and an output terminal; a fixed-set counter having an input terminal coupled to said detector output terminal for accommodating pulses therefrom and an output terminal for presenting a full-count signal when a preset count of pulses has been accumulated; a firing circuit having an input terminal coupled to said counter output terminal for detonating said fuze when said full-count signal is presented by said counter; variable pulse rate control means coupled to said transmitter for varying the pulse rate of said transmitter; a gun for discharging said projectile at a target; and a target ranging means for determining the range of the target from said gun, and coupled to said pulse rate control means for causing said pulse rate control means to vary the pulse rate of said transmitter in inverse proportion to the range of the target from said gun.
Claim 5
Dependent Claim 209 words
A weapon system comprising: an R.F. pulse transmitter having a transmitting antenna for transmitting pulses; a projectile having a fuze; said fuze including a receiving antenna disposed within a central core of the aft end of said projectile and having a maximum gain to the rear of said projectile for receiving pulses transmitted from said transmitter; an R.F. detector having an input terminal coupled to said receiving antenna and an output terminal; a fixed-set counter having an input terminal coupled to said detector output terminal for accommodating pulses therefrom and an output terminal for presenting a full-count signal when a preset count of pulses has been accumulated; a firing circuit having an input terminal coupled to said counter output terminal for detonating said fuze when said full-count signal is presented by said counter; variable pulse rate control means coupled to said transmitter for varying the pulse rate of said transmitter; a gun for discharging said projectile at a target; and a target ranging means for determining the range of the target from said gun, and coupled to said pulse rate control means for causing said pulse rate control means to vary the pulse rate of said transmitter in inverse proportion to the range of the target from said gun.

References Cited (Backward Citations)

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US2709773A Cited
US2703399A Cited
US2840808A Cited
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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) 1983-07-29 1984-01-28 1984-07-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-07-29 1988-01-28 1988-07-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-07-29 1992-01-28 1992-07-29 $7700.00 Window Closed / Lapsed

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