Ordnance – Mounts – Training mechanisms
Patent
1997-02-07
1998-11-10
Johnson, Stephen M.
Ordnance
Mounts
Training mechanisms
89 4106, F41G 308
Patent
active
058346775
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The technical scope of the present invention is that of stabilizing means applicable to small firearms.
2. Description of the Prior Art
Any small personal firearm is held and pointed at its target by the hands of the shooter who aims it in the direction of fire with the aid of a sighting device which is usually integral with the barrel. When the firearm is fitted with a sighting device, the line of sight is delimited by a cross-hair or other optical reference mark.
When the shooter judges that the sights are in line with the target, he triggers the shot. At the present time, all small firearms operate according to this principle.
However, this way of proceeding causes two main drawbacks during firing to which no solutions have yet been found. First of all, the inevitable quavering of the shooter's hand prevents, even for an experienced shooter, accurate aiming on the target because of the constant movement of the line of sight and thus of the aim. Then, on firing, that is when the shooter presses the trigger, a slight de-aiming occurs. These, even almost imperceptible, movements directly result in a drop in the hit probability which is inevitable given this way of proceeding. This can be compared with results obtained by firing from the same weapon mounted on a rest, that is where there is no inadvertent movement of the weapon at the instant of firing, the result obtained being fully satisfactory in terms of probability. However, firing carried out by a shooter leads to a quasi nil hit probability for an aiming error of around 3 mrd.
A solution to meet this drawback has already been proposed which is based on the principle of controlling a firing window, but this type of solution is complicated. Thus, we know of an electric firing system using gyrometric data filtering, an electric firing system based on image processing and gap measuring, and an image stabilizing system, for example of a video image, with electrical firing.
In these systems, the fact that the firearm is subjected to erratic movements is utilized and the shot is triggered when the line of sight of the barrel is judged to be the most accurate. But, for all these systems, drawbacks remain. In fact, it is essential for the erratic movement of the firearm to pass over the target to trigger firing. Thereafter, a range finder is often used which in turn must be stabilized in order to operate correctly.
SUMMARY OF THE INVENTION
The aim of the invention is to propose a stabilizing system which offers a good hit probability and which enables the firing operations to be simplified, thereby avoiding the aforementioned drawbacks.
To this end, the invention proposes a stabilizing device for a small firearm comprising a sighting device which is characterised in that it comprises means to uncouple the barrel with respect to the shooter, hinged linking means which are mounted between the barrel and the uncoupling means to enable the barrel to swivel with respect to the uncoupling means. Means to control the swivelling of the barrel are provided in order to offset parasitic movements imparted to the firearm by the shooter during sighting thus keeping the barrel in the line of sight fixed by the shooter.
According to a preferred embodiment, the means to uncouple the barrel from the firer are formed of a tubular element which is coaxially brought around the barrel and is integral with the body of the firearm being handled by the firer.
Generally speaking, the linking means mounted between the uncoupling means and the barrel comprise two axes which are perpendicular to one another and onto which the barrel is mounted hinged.
By way of example, the linking means are formed of a system of the universal joint or ball type.
As a variant, these linking means can be formed of four wire assemblies working by elastic torsion, two wire assemblies being located respectively on either side of the barrel and aligned with one of the axes of the barrel, and the two other wire assemblies also being located on either
REFERENCES:
patent: 3566743 (1971-03-01), Frohock, Jr.
patent: 3711204 (1973-01-01), Steck, III
patent: 4393597 (1983-07-01), Picard et al.
patent: 5171933 (1992-12-01), Eldering
patent: 5408778 (1995-04-01), Goodwin et al.
Giat Industries
Johnson Stephen M.
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