SJS PAINTBALL, LP Patent applications |
Patent application number | Title | Published |
20090013892 | CASING FOR SOFT PROJECTILE AND METHOD FOR MAKING SAME - A casing for a relatively soft projectile, such as a projectile for a paintball gun, has a concave portion for receiving a substantially round soft projectile, a driving band located behind the concave portion, and an aerodynamic portion located behind the driving band. The driving band preferably has lands and grooves for engaging rifling in the bore of the gun. The aerodynamic portion may have the approximate shape of a prolate spheroid or a paraboloid of revolution, or another shape that reduces eddy currents and drag behind the projectile. The concave portion of the casing preferably has an adhesive to prevent separation of the casing and projectile in flight. The casing may be solid or hollow; in the later case, it may be filled with a substance such as urethane foam. | 01-15-2009 |
20090007767 | Soft-Projectile Gun Barrel and Method for Making Same - A method for making a gun barrel for soft projectiles includes providing a mandrel for the bore of the barrel. The mandrel is inserted into a barrel base that can be connected in use to the receiver of a soft-projectile gun. The connected barrel base and mandrel are inserted into a tube. A resin, preferably reinforced, is poured into the space between the inside of the tube and the mandrel. The barrel base, mandrel and tube are surrounded by a pressure chamber. A vacuum is applied to the pressure chamber to de-gas the resin. Then a positive pressure is applied to the pressure chamber to force the tube against the mandrel and resin to form the desired barrel. The mandrel may have rifling impressions. The tube may have a mold shape for forming an ornamental design in the outside of the barrel. Barrels made by the method are also disclosed. | 01-08-2009 |