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US3813795A Expired / Lapsed US ⏱️ 0.0 years remaining

Laser device for moving target marksmanship training

Assignee: United States Department of the Navy
•
Filing: 1973-06-08
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Granted: 1974-06-04
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Expires: 1993-06-08
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Abstract

Abstract A rifle or light machine gun is equipped with a transmitter for projecting a laser beam and an adjustable beam aiming mechanism. A moving target having a laser beam receiver affixed thereto is provided. When a trainee aims his rifle at the target and pulls the trigger a laser beam is projected towards the target. If the beam strikes the target, the receiver emits a signal. Since the target is moving the trainee must ''''lead'''' it correctly to score a hit. The aiming mechanism is adjusted to compensate for the difference in the time of flight of a bullet and the laser beam. Therefore a trainee firing the laser beam learns the leads required to hit targets of various speeds with a particular weapon.

Inventors

  • 👤 A Marshall
  • 👤 G Siragusa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 18:16
CPC Classifications
F; F41; F41G; F41G3/00; F41G3/26; F41G3/2616; F41G3/2622; F41G3/2655

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 243 words
In a device for lead angle instruction in moving target marksmanship training the combination comprising: a weapon having a trigger switch and a projectile barrel defining a projectile axis, a laser beam transmitter for connection to a battery power source and connected for firing through operation of said trigger switch, said transmitter having a laser beam projection axis, compensating means for compensating for the difference between the weapon-to-target flight time of a bullet from said weapon and a laser beam from said transmitter, said compensating means including adjustable mounting means for mounting said transmitter to said barrel, said mounting means being adjustable for selected factors including range, target speed, target direction, and weapon type to position said transmitter with its laser beam axis at a selected angle to the projectile axis of said barrel so that a beam fired from said transmitter will hit the target when said weapon is aimed at a point a lead distance from said target dependent upon said selected factors, said lead distance being such that the flight time of a moving target traversing said distance is equal to the weapon-totarget flight time of a bullet from said weapon, to provide for any given set of selected factors the same lead to hit a given target with said laser beam as is required to hit said given target with a bullet from said weapon, and a receiver element for signaling a hit when the target is correctly lead.
Claim 2
Dependent Claim 243 words
In a device for lead angle instruction in moving target marksmanship training the combination comprising: a weapon having a trigger switch and a projectile barrel defining a projectile axis, a laser beam transmitter for connection to a battery power source and connected for firing through operation of said trigger switch, said transmitter having a laser beam projection axis, compensating means for compensating for the difference between the weapon-to-target flight time of a bullet from said weapon and a laser beam from said transmitter, said compensating means including adjustable mounting means for mounting said transmitter to said barrel, said mounting means being adjustable for selected factors including range, target speed, target direction, and weapon type to position said transmitter with its laser beam axis at a selected angle to the projectile axis of said barrel so that a beam fired from said transmitter will hit the target when said weapon is aimed at a point a lead distance from said target dependent upon said selected factors, said lead distance being such that the flight time of a moving target traversing said distance is equal to the weapon-totarget flight time of a bullet from said weapon, to provide for any given set of selected factors the same lead to hit a given target with said laser beam as is required to hit said given target with a bullet from said weapon, and a receiver element for signaling a hit when the target is correctly lead.
Claim 3
Dependent Claim 20 words
The apparatus of claim 1, and including a scale on said mounting means for indicating the magnitude of said angle.
Claim 4
Dependent Claim 53 words
The apparatus of claim 2, said mounting means comprising: a first plate fixed to said gun, a second plate fixed to said transmitter, hiNge means rotatably connecting said first plate to said second plate, and detent means for yieldably holding said second plate in a selected position with respect to said first plate.

References Cited (Backward Citations)

US1144656A Cited
US3026615A Cited
US3339293A Cited
US3471945A Cited
US3609883A Cited
US3633285A Cited
US3657826A Cited
US3748751A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-06-03 1977-12-03 1978-06-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-06-03 1981-12-03 1982-06-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-06-03 1985-12-03 1986-06-04 $7700.00 Window Closed / Lapsed

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