Abstract: A fuel injection control system for an internal combustion engine utilizes a fuel injection pump in which the pump cylinder is in fluid communication with the fuel injection nozzle and a piezoelectric actuated spill valve. A cam drive actuates the pump piston to achieve a constant velocity during the pumping cycle (constant velocity relative to degrees of rotation of the engine crankshaft). An index wheel connected to either the engine crankshaft or the pump camshaft is used in conjunction with an initial position detector, angular position detector and a pump control unit to close and open the spill valve at predetermine positions of the pump piston during the pumping cycle. The pump control unit includes a computer connected to various engine parameter transducers to adjust the closing and opening of the spill valve to achieve a desired fuel injection volume.

Abstract: A copper jacketed explosive bullet for penetrating light armor, the bullet having a tubular hard heavy metal body filled with explosive and having an igniting mixture within the jacket forward of the explosive and a lightweight pyrophoric metal base plug for added burn time for increased fire starting ability.

Abstract: A small caliber armor-piercing bullet is described in which a case hardened steel nosed lead projectile is utilized to help reduce projectile fragmentation at impact.

Abstract: An all-plastic cartridge case is disclosed. The case is all-plastic polyethylene and has a hard-plastic rim and a soft-plastic glass-filled high density polyethylene basewad. The basewad is of a plastic similar to but stronger and tougher than that of the shotshell tube while the rim is of a hard plastic which is chemically dissimilar to the tube. The rim is mechanically locked to the tough basewad and the basewad is chemically bonded to the tube. Also disclosed is a two-step method for molding such a shell with a triple plastic head. Either the rim or the basewad is molded first and the other of the two is molded through the first.

Abstract: A projectile for a centerfire cartridge that achieves maximum energy transfer with limited target penetration when fired from snub-nosed pistols. A hollow point lead bullet is provided with an aluminum jacket of sufficient hardness to avoid fouling the pistol barrel and which allows the cartridge containing the projectile to feed reliably in auto-loading pistols and yet does not restrict normal expansion of the bullet upon impact with the target. The jacket extends into the nose recess of the bullet and covers the peripheral portion of the bullet base, whereby the jacket is securely fastened to the bullet and separation subsequent to impact is prevented. The jacket is uniformly notched at the nosetip annulus to weaken the aluminum jacket and promote upset at surprisingly low impact velocities.

Abstract: A process for producing double base propellant powders deterred with Vinsol by diluting the Vinsol with isopropyl alcohol or similar solvent and then adding the solvent Vinsol solution to the propellant powder in a sweetie barrel in an intermittent manner proceeded by addition of graphite.

Abstract: A high velocity ammunition sabot of brittle material which has sufficient strength to withstand the forces of being launched from a rifled gun barrel but which fragments almost immediately upon exit from the barrel due to centrifugal forces. A polyetherimide material is preferred, although materials of equivalent properties could be used.

Abstract: An all-plastic cartridge case is disclosed. The case is all-plastic and has a hard-plastic rim and a soft-plastic basewad. The basewad is of a plastic similar to that of the shotshell tube while the rim is of a plastic which is chemically dissimilar to the tube. The basewad and rim are mechanically interlocked. Also disclosed is a two-step method for molding such a shell with a dual plastic head. Either the rim or the basewad is molded first and the other of the two is molded through the first.

Abstract: A cartridge magazine for holding cartridges for feeding to the barrel of an explosion driven fastener setting tool comprises an elongated flat flexible strip or band preferably made of an inexpensive material such as plastic. The strip includes a plurality of stepped projections defining cartridge holding recesses arranged at equally spaced locations along the strip and lateral recesses for advancement. Each cartridge holding recess is defined by a stepped projection extending upwardly from the strip which on its exterior is stepped inwardly in a direction toward the tip of the cartridge. The angular taper of each of the outside walls of this portion on the cartridge magazine is slightly less than one cone angle of the cartridge chamber of a gun barrel with which it is to be employed, so that there will be more than one sealing point between the projections and the inner wall of the cartridge chamber.

Abstract: The undesirable abrupt expansion and contraction of ammonium nitrate in the temperature range of use of a rocket motor and explosives (-55.degree. C. to 80.degree. C.) is eliminated by the addition of 0.5 to 2% by weight of a crystal growth inhibitor, specifically potassium fluoride (KF).

Abstract: A primer pocketing method in which the pocket is formed by punching through a centrally unsupported base of a cartridge blank. A funnel-shaped partially flared primer pocket is produced.

Abstract: A multi-part sabot for maintaining roundness of shot pellets during launch and passage of the pellets through a smooth bore harrel. The sabot is a coaxial stack of at least two cylindrical wafers, each dimpled to individually surround and protect the shot pellants.

Abstract: A dual chamber bullet trap has a housing divided into two chambers by an impact plate that extends rearwardly and downwardly from the front to the rear of the trap. In one embodiment the impact plate is fixedly sealed to the housing thus defining a lower-forward chamber below the plate partially filled with water for receiving bullets deflected off the plate, and a second water filled chamber above the plate for stopping bullets which penetrate the impact plate when it fails due to repeated bullet impacts. When the impact plate fails water drains from the upper chamber indicating failure of the impact plate. In a second embodiment the impact plate is hinged along its front edge to the top-front of the trap and is free to pivot upwardly upon bullet impact to help dissipate bullet energy. The upper chamber contains a fluid filled container behind the pivoting impact plate. When bullets penetrate the impact plate they pierce the container allowing water to drain therefrom to indicate impact plate failure.

Abstract: A discarding sabot projectile is disclosed which includes a smooth cylindrical projectile core with a reduced diameter nose and a sabot surrounding the projectile. A restraint device is positioned between the front of the sabot and the nose of the core for normally preventing forward movement of the projectile core relative to the sabot and disengaging from the sabot or core in response to spin-up of the sabot projectile during firing to allow substantially unencumbered separation of the core from the sabot.

Abstract: A method of manufacturing a sabot projectile is disclosed. The projectile core is used as the core pin of a mold and the sabot is molded directly onto and in alignment with the projectile core.

Abstract: A method of using standard commercial shotshells in a non-standard chamber is disclosed. The non-standard chamber is at least 1/2 mm larger in diameter than the shell of a continuous axial length of at least 3 mm immediately forward of the rim breeching bevel. By conventional standards this would appear to be unsafe yet the method has been determined to be quite safe and allows commercial shotshells to be used in a chamber designed for combat shotshells which will not fit into standard commercial shotgun chambers of similar gauge size.

Abstract: A method of removing product of an unacceptable height from a product line is disclosed. In the method, a quantity of the product is arrayed in a carrier and moved to a gauging station where the array is placed between a reference plate and a corresponding array of gauging members and gauged by raising the reference plate to a predetermined height position and measuring the height of the gauging members when the gauging members are supported on the product array. The signals from the gauging station are stored and the carrier plate is moved to a rejection station where unacceptable product is selectively removed in response to the stored rejection signals from the gauging station. The carrier plate is then returned to the product line with only acceptable product still in place.

Abstract: A shotshell having a dual rim or "belted" head design. The belt rim is of greater diameter than the maximum inside diameter of the chamber bore of a standard commercial shotgun of the same gauge size, thus preventing the belted shotshell from being fully chambered in a standard commercial shotgun.