Mechanical guns and projectors – Fluid pressure – With control for discharge of fluid pressure
Reexamination Certificate
1999-06-16
2001-09-11
Rowan, Kurt (Department: 3643)
Mechanical guns and projectors
Fluid pressure
With control for discharge of fluid pressure
Reexamination Certificate
active
06286497
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to the field of pneumatic guns having an internal pressurized air supply for propelling a missile, such as a paint ball and more particularly to a novel pressure air valve and regulator assembly which includes an exhaust means for distributing exhaust air in a radial pattern for efficiency purposes.
2. Brief Description of the Prior Art
It has been the conventional practice in the field of air guns and the like to provide a pressurized means for propelling a missile, such as a paint ball, from the gun at one end of the barrel. At the other end of the barrel, air regulator means and air valve is provided for exhausting a high pressure air from the discharge of the gun exteriorly of the barrel. In this connection, an exhaust orifice is provided from an air chamber which conducts the high pressure air exteriorly of the barrel. Problems and difficulties have been encountered with conventional air valve and regulator systems which stem largely from the fact that the exhaust opening or orifice for the exhaust air is greatly restricted and even when exhausted, the exhaust discharge is in a single direction which causes the discharge to be at high pressure. In other words, no means is provided in a conventional air pressure exhaust system for conveniently splitting the exhaust discharge so that pressure is reduced and which provides a sufficient opening for the exhaust so that, again, the pressure is reduced.
Therefore, a long-standing need has existed to provide an air gun with a high pressure exhaust system that not only provides for maximum orifice opening for the discharge port but provides a distribution means in the contour of the port for distributing the high pressure exhaust in a radial direction.
SUMMARY OF THE INVENTION
Accordingly, the above problems and difficulties are avoided by the present invention which provides a novel air valve and regulator system which includes a cylindrical body having an internal air chamber operably connected at one end to a high pressure air supply or source. The other end of the cylinder is provided with a discharge orifice having a conical or frustro-conical member mounted coaxially with the cylinder and which partially occupies the discharge orifice so that exhausting air strikes the tapered surface and is distributed in a radial direction exteriorly of an air gun. The discharge orifice includes a support brace or member for the frustro-conical member and the surrounding surface of the discharge orifice is similarly tapered so that its surface is parallel with the exterior surface of the conical member. The space in between represents a circular discharge opening through which the high pressure exhaust is directed exteriorly of the gun. A feature resides in providing a regulator valve stem and regulator seal in movable relationship with respect to the conical member so that reciprocal movement is permitted between the conical member and the stem.
Therefore, it is among the primary objects of the present invention to provide a novel discharge orifice for a high pressure exhaust system having an air valve and regulator which permits high pressure air to be discharged by disbursing or distributing the discharge air in a radial pattern.
Another object of the present invention is to provide a novel air valve and regulator means including a discharge orifice having a conical member for redirecting high pressure exhaust air into the radial distribution exteriorly of an air gun.
Still a further object is to provide a novel air discharge system for high pressure air in an air gun comprising a circular discharge orifice having a conical member fixedly disposed in the center thereof and tapered wall surfaces in spaced-apart relationship with respect to the conical member so that the discharge orifice includes an increasing diameter discharge opening for exhausting of the discharge air.
REFERENCES:
patent: 3735747 (1973-05-01), Barjavel
patent: 5265582 (1993-11-01), Bhogal
patent: 5450839 (1995-09-01), Nicolaevich et al.
patent: 5476087 (1995-12-01), Kunimoto
patent: 5477843 (1995-12-01), Kunimoto
patent: 5613483 (1997-03-01), Lukas et al.
patent: 5913303 (1999-06-01), Kotsiopoulos
Marrs Roger A.
Rowan Kurt
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