Abstract: In a paintball gun in which projectiles are admitted into the breech from a feed port through a radial aperture, sensors positioned in line with the aperture detect whether a projectile is completely or partially inserted into the breech, or totally missing. An electronic logic circuit allows the firing of the gun only when the projectile is fully inserted, and prevents the firing when the projectile is only partially inserted into the breech. A dry firing of the gun is enabled if the breech remains empty of any projectile for a short period. The dry firing is intended to dislodge any projectile jammed in the feed port.

Abstract: An improved headgear includes an outer shell and an inner liner providing a head receiving cavity. A headband has a forward portion and lateral portions secured to the inner liner and a rearward portion extending rearwardly of said lateral portions. A first vent aperture is centrally formed in the outer shell. A second vent aperture is centrally formed in the inner liner. Third vent apertures are formed in the inner liner in spaced relationship with the second vent aperture.

Abstract: An improved headgear includes an outer shell and an inner liner providing a head receiving cavity. A headband has a forward portion and lateral portions secured to the inner liner and a rearward portion extending rearwardly of said lateral portions. A first vent aperture is centrally formed in the outer shell. A second vent aperture is centrally formed in the inner liner. Third vent apertures are formed in the inner liner in spaced relationship with the second vent aperture.

Abstract: An ammunition magazine for dispensing uniformly-sized spherical projectiles such as paintballs into a gun adapted to shoot said projectiles has a generally oblong, closed container having a channel defined in its bottom from a distal axial end to an outlet port located in a lowermost, median portion of the container. The proximal portion of the container floor defines a slanted platform which extends above and beyond the outer port so that projectiles are urged by the platform toward the distal end of the channel from where they roll under the platform and into the outlet port. A helicoidal stirring arm projects from a distal area of the platform obliquely over the exposed part of the channel. The steering arm is driven by an electrical motor controlled by a switch conveniently mounted on the side of the magazine. The arm spins in a ball-uplifting direction to break any jamming of the balls above the channel.

Abstract: An improved headgear includes an outer shell and an inner liner providing a head receiving cavity. A headband has a forward portion and lateral portions secured to the inner liner and a pair of rearwardly extending flexible members having interconnecting free end portions that allow the headband to be adjusted to many heads of different length. A fabric lining covers the headband forward and lateral portions and has slot openings through which the headband flexible members extend. An adjustable opening at the top of the fabric lining facilitates headgear vertical adjustment. A pair of side retention straps extend downwardly from the sides of the outer shell. A pair of rear retention straps mount to respective ones of the side retention straps and are adjustably secured to each other. The inner liner has channels that receive the side retention straps and allow them to drape down in close proximity to a wearer's temples and cheeks.

Abstract: A method for continuous processing/in-situ consolidation and curing of thermoset resin impregnated fiber tow into a composite product having minimal porosity and being relatively void free. The method provides for preconditioning a fiber, impregnating a continuous fiber tow with a low viscosity thermoset resin to complete saturation and then simultaneously outgassing and advancing the resin impregnated tow. The preconditioned tow is then applied to a substrate such as a heated rotating mandrel in a filament winding procedure where heat is applied to the nip of the touch-down of the tow to the mandrel with the simultaneous application of pressure for initial consolidation of the tow upon the substrate. Additional pressure and heat are applied to the tow as the mandrel is rotated to provide for advancing the stage of the resin and further consolidation of the material.