US3787693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boresight alignment device
Assignee: United States Department of the Army
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Filing: 1972-12-14
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Granted: 1974-01-22
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Expires: 1992-12-14
Abstract
Abstract A means for zeroing a small caliber weapon on a target at night without firing the weapon. The means comprises using a boresight alignment light emitting a continuous infrared light that is mounted on a tapered mandrel with the mandrel inserted into the muzzle end of the weapon, an aiming light mounted on the weapon emitting intermittent pulses of infrared light, and a night viewing scope head worn by the weapon operator. The operator zeros the weapon on the target by superimposing the continuous and intermittent pulses of light onto each other. The operator aligns both lights by adjustment screws on the housings of the boresight alignment light and the aiming light.
Inventors
- 👤 R Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:00
CPC Classifications
F; F41; F41G; F41G1/00; F41G1/54; F41G1/545; G; G02; G02B; G02B23/00; G02B23/12; G02B23/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
207 words
A means of zeroing a small caliber weapon at night without firing the weapon, the steps comprising: mounting an aiming light on said weapon, said aiming light has an intermittent pulse producing infrared source that produces intermittent beam of infrared illumination and optics that projects said intermittent beam of infrared illumination toward a target; inserting a tapered mandrel having a boresight alignment light mounted thereto into the muzzle end of said weapon, said boresight alignment light has a continuous infrared emitting source that produces a continuous beam of infrared illumination and optics that projects said continuous beam of infrared illuminations toward the same target; providing night viewing image intensifier goggles that are head worn by an operator wherein said goggles convert the intermittent and continuous beams of infrared illumination that is reflected from a target to visible illumination for observation by said operators; rotating said tapered mandrel through 360* within the muzzle end of said weapon and simultaneously adjusting the continuous beam of infrared illumination into a spot of reflected light signifying said continuous beam of light along the boresight of said weapon; and adjusting the direction of said intermittent beam of infrared light until said intermittent beam and said continuous beam are superimposed over each other.
Claim 2
Dependent Claim
207 words
A means of zeroing a small caliber weapon at night without firing the weapon, the steps comprising: mounting an aiming light on said weapon, said aiming light has an intermittent pulse producing infrared source that produces intermittent beam of infrared illumination and optics that projects said intermittent beam of infrared illumination toward a target; inserting a tapered mandrel having a boresight alignment light mounted thereto into the muzzle end of said weapon, said boresight alignment light has a continuous infrared emitting source that produces a continuous beam of infrared illumination and optics that projects said continuous beam of infrared illuminations toward the same target; providing night viewing image intensifier goggles that are head worn by an operator wherein said goggles convert the intermittent and continuous beams of infrared illumination that is reflected from a target to visible illumination for observation by said operators; rotating said tapered mandrel through 360* within the muzzle end of said weapon and simultaneously adjusting the continuous beam of infrared illumination into a spot of reflected light signifying said continuous beam of light along the boresight of said weapon; and adjusting the direction of said intermittent beam of infrared light until said intermittent beam and said continuous beam are superimposed over each other.
Claim 3
Dependent Claim
32 words
A means of zeroing a smaller caliber weapon as set forth in claim 1 wherein said intermittent pulse producing infrared source and said continuous infrared emitting source are gallium arsenide phosphide diodes.
Claim 4
Dependent Claim
22 words
A means of zeroing a small caliber weapon as set forth in claim 2 wherein said optics is a catadioptic optical system.
Claim 5
Dependent Claim
30 words
A means of zeroing a small caliber weapon as set forth in claim 3 wherein said catadioptic system has a diameter of 50 millimeters and one quarter degree beam spread.
Claim 6
Dependent Claim
23 words
A means of zeroing a small caliber weapon as set forth in claim 2 wherein said optics is a double convex projection lens.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |