Abstract: A method for cleaning debris from a floor of a cooling tower collection basin can include expelling a fluid from a first side of the basin floor to a second and opposite side of the basin floor where the fluid and debris are removed. The fluid may be expelled through radial openings in sweeper headers and may be removed through openings in a suction manifold. The method may further include removing the debris from the fluid.

Abstract: A method for cleaning debris from a floor of a cooling tower collection basin can include expelling a fluid from a first side of the basin floor to a second and opposite side of the basin floor where the fluid and debris are removed. The fluid may be expelled through radial openings in sweeper headers and may be removed through openings in a suction manifold. The method may further include removing the debris from the fluid.

Abstract: A sweeper assembly can include a plurality of holes drilled in one or more sweeper headers that can be angled downwards towards the basin floor to produce a gentle flow of fluid to keep particulate matter rolling along the basin floor. A centrifugal separator can include a curved velocity plate for smoothly directing flow from an inlet pipe to an inner wall of the separator and creating a downward vortex of particulate-laden fluid within the centrifugal separator. The centrifugal separator can include one or more reversal mechanisms for transferring particulate matter to a collection chamber and reversing the direction of particle-free fluid, which may upwardly exit through a discharge pipe. The centrifugal separator can include a bleed valve in the discharge pipe for automatically bleeding accumulated air in the “dead zone” between the inlet pipe and the top of the centrifugal separator.

Abstract: A sweeper assembly can include a plurality of holes drilled in one or more sweeper headers that can be angled downwards towards the basin floor to produce a gentle flow of fluid to keep particulate matter rolling along the basin floor. A centrifugal separator can include a curved velocity plate for smoothly directing flow from an inlet pipe to an inner wall of the separator and creating a downward vortex of particulate-laden fluid within the centrifugal separator. The centrifugal separator can include one or more reversal mechanisms for transferring particulate matter to a collection chamber and reversing the direction of particle-free fluid, which may upwardly exit through a discharge pipe. The centrifugal separator can include a bleed valve in the discharge pipe for automatically bleeding accumulated air in the “dead zone” between the inlet pipe and the top of the centrifugal separator.

Abstract: A sweeper assembly can include a plurality of holes drilled in one or more sweeper headers that can be angled downwards towards the basin floor to produce a gentle flow of fluid to keep particulate matter rolling along the basin floor. A centrifugal separator can include a curved velocity plate for smoothly directing flow from an inlet pipe to an inner wall of the separator and creating a downward vortex of particulate-laden fluid within the centrifugal separator. The centrifugal separator can include one or more reversal mechanisms for transferring particulate matter to a collection chamber and reversing the direction of particle-free fluid, which may upwardly exit through a discharge pipe. The centrifugal separator can include a bleed valve in the discharge pipe for automatically bleeding accumulated air in the “dead zone” between the inlet pipe and the top of the centrifugal separator.

Abstract: An ammunition handling system includes a plurality of generally flat ammunition holding strips, each having clips thereon for holding a plurality of ammunition rounds and coupling apparatus disposed on each end thereof for releasably coupling the ammunition holding strips to one another for feeding the ammunition holding strips and the ammunition disposed thereon into an ammunition stripper and loader assembly. The ammunition stripper and loader assembly includes a chute for supporting at least one ammunition holding strip and apparatus for separating the ammunition rounds from the holding strips and feeding the separated ammunition rounds into an ammunition transfer unit of an automatic weapon.

Abstract: A percussion type projectile nose fuse includes a generally conical fuse body having a cavity open only to the base thereof. Disposed within the cavity is a firing pin, a sleeve and a ball igniter. A fuse tip portion is defined by a weakened region, open to the fuse body exterior surface, which ruptures upon tip impact with a target, thereby causing at least partial rearward penetration of the tip into the cavity. Upon such tip penetration, the tip severs a flange on the firing pin by driving it against the sleeve, and propells the firing pin rearwardly along the sleeve and into engagement with the ball igniter. By forming the sleeve substantially longer than the length of the firing pin, a time delay before ignition, equal to the firing pin transit time, is provided. A forward opening recess formed in the apex of the tip, with a thin deformable wall thereabout, provides shock absorption so that accidental rupture of the weakened region does not occur during normal handling and loading of the projectile.