Patent US4824374A successfully refreshed from Google Patents.
US4824374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Target trainer
Assignee: Individual
•
Filing: 1986-08-04
•
Granted: 1989-04-25
•
Expires: 2006-08-04
Abstract
Abstract A target trainer has a screen on which is depicted a scene, a target projector for projecting the image of a moving target on the screen, and a combination of an infra-red target beam projector and infra-red sensitive television camera, associated with a simulated weapon and the target to determine the accuracy of simulated shooting at the target.
Inventors
- 👤 Dennis J. Hendry
- 👤 Peter J. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:44
CPC Classifications
F; F41; F41J; F41J9/00; F41J9/14; F41G; F41G3/00; F41G3/26; F41G3/2605; F41G3/2611; F41G3/2616; F41G3/2622; F41G3/2627
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
154 words
A target trainer comprising a screen for displaying a picture of a terrain; a target projector means for projecting onto the screen a target image; drive means coupled with said target projector for moving the target image across the screen; a shot simulator/detector arrangement having (a) a target beam projector means for projecting onto the target a spot of infra-red light, (b) a television camera directed at the region of the target and responsive to the infra-red spot, and (c) means connected to said television camera for analyzing the position of the infra-red spot in the camera field of view to give an output signal representative of the position of the fall-of-shot, and a fall-of-shot indicator having a further projector means for projecting a fall-of-shot indicator beam of light onto the screen and including positioning means responsive to the output signal to position the fall-of-shot indicator beam on the screen independent of the target.
Claim 2
Dependent Claim
154 words
A target trainer comprising a screen for displaying a picture of a terrain; a target projector means for projecting onto the screen a target image; drive means coupled with said target projector for moving the target image across the screen; a shot simulator/detector arrangement having (a) a target beam projector means for projecting onto the target a spot of infra-red light, (b) a television camera directed at the region of the target and responsive to the infra-red spot, and (c) means connected to said television camera for analyzing the position of the infra-red spot in the camera field of view to give an output signal representative of the position of the fall-of-shot, and a fall-of-shot indicator having a further projector means for projecting a fall-of-shot indicator beam of light onto the screen and including positioning means responsive to the output signal to position the fall-of-shot indicator beam on the screen independent of the target.
Claim 3
Dependent Claim
16 words
A target trainer as claimed in claim 1 wherein the positioning means is a movable shutter.
Claim 4
Dependent Claim
45 words
A target trainer as claimed in claim 1 further comprising mounting means on which the further projector means and the target projector means are mounted and to which said drive means is connected for driving said target projector means and said further projector means together.
Claim 5
Dependent Claim
34 words
A target trainer as claimed in claim 1 wherein the target beam projection means is mounted on the target image projector means, and further comprising a simulated weapon in which said camera is mounted.
Claim 6
Dependent Claim
32 words
A target trainer as claimed in claim 1 wherein the camera is mounted on the target image projector means and a simulated weapon in which said target beam projector means is mounted.
Claim 7
Dependent Claim
38 words
A target trainer as claimed in claim 1 wherein the target projector means comprises a photographic slide which has a required dark silhouette outlined by an optical field bright at the centre and progressively darkening towards the edges.
Claim 8
Dependent Claim
42 words
A target trainer as claimed in claim 1 wherein the target beam projector means and the target projector means are constituted by a single projector having means for deriving an infra-red target beam by filtering, from the illumination source for the target.
Claim 9
Dependent Claim
137 words
A target trainer comprising: a screen for displaying a picture of a terrain; a target projector for projecting onto the screen a target image; drive means coupled with said target projector for moving the target image across the screen; a shot simulator/detector arrangement having (a) a target beam projector for projecting onto the target a spot of infra-red light, (b) a television camera directed at the region of the target and responsive to the infra-red spot, and (c) means for analyzing the position of the infra-red spot in the camera field of view to give an output signal representative of the position of the fall of shot, the target projector being comprised of a photographic slide which has a required dark silhouette outlined by an optical field bright at the center and progressively darkening towards the edges.
Claim 10
Dependent Claim
137 words
A target trainer comprising: a screen for displaying a picture of a terrain; a target projector for projecting onto the screen a target image; drive means coupled with said target projector for moving the target image across the screen; a shot simulator/detector arrangement having (a) a target beam projector for projecting onto the target a spot of infra-red light, (b) a television camera directed at the region of the target and responsive to the infra-red spot, and (c) means for analyzing the position of the infra-red spot in the camera field of view to give an output signal representative of the position of the fall of shot, the target projector being comprised of a photographic slide which has a required dark silhouette outlined by an optical field bright at the center and progressively darkening towards the edges.
Claim 11
Dependent Claim
145 words
A target trainer comprising: a screen for displaying a picture of a terrain; a target projector for projecting onto the screen a target image; driving means coupled with said target projector for moving the target image across the screen; a shot simulator/detector arrangement having (a) a target beam projector for projecting onto the target a spot of infra-red light, (b) a television camera directed at the region of the target and responsive to the infra-red spot, and (c) means for analyzing the position of the infra-red spot in the camera field of view to give an output signal representative of the position of the fall of shot; a television display driven by the television camera and displaying a representation of the aiming graticule of the weapon indicating the current point of aim and a marker displayed by computation to be the correct point of aim.
Claim 12
Dependent Claim
145 words
A target trainer comprising: a screen for displaying a picture of a terrain; a target projector for projecting onto the screen a target image; driving means coupled with said target projector for moving the target image across the screen; a shot simulator/detector arrangement having (a) a target beam projector for projecting onto the target a spot of infra-red light, (b) a television camera directed at the region of the target and responsive to the infra-red spot, and (c) means for analyzing the position of the infra-red spot in the camera field of view to give an output signal representative of the position of the fall of shot; a television display driven by the television camera and displaying a representation of the aiming graticule of the weapon indicating the current point of aim and a marker displayed by computation to be the correct point of aim.
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) | 1992-04-24 | 1992-10-24 | 1993-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-24 | 1996-10-24 | 1997-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-24 | 2000-10-24 | 2001-04-25 | $7700.00 | Window Closed / Lapsed |