Abstract: This invention concerns a unique firearm trigger, safety and stock attachment mechanism and to an embodiment in a semi-automatic blowback rifle where the receiver is mounted in the buttstock, a style commonly referred to as a "bullpup". The trigger is a dual electrical and mechanical design with one trigger lever and a control timer. The safety is forward mounted and blocks the sear. The stock mounting prevents bending moments in the stock to be transmitted to the barrel/receiver assembly. The bull-pup rifle embodiment itself has several unique features including a cheekpiece removable from the stock.

Abstract: A vibration dampening device 10 is provided in the forearm 14 of a rifle 10 for engaging a cantilevered barrel 12 forward of the rifle action for dampening the vibration of the barrel as a bullet moves through the barrel to the muzzle. The vibration dampening device in the preferred embodiment includes an insert 44 that is mounted in a cavity 38 formed in the forearm 14. The insert includes a threaded bore 48 with a pressure screw 50 threadably mounted in the bore 48 in which the threaded screw has a pointed end 54 engaging the barrel at a selected point. A tool access aperture 58 extends through the forearm from the lower profile surface 16 in alignment with the threaded bore 48 for enabling a tool to be inserted through a tool access aperture 58 to engage the pressure screw 50 to rotate the pressure screw to the desired position. Preferably a locking means 60 is provided for locking the pressure screw 60 in place when the correct pressure is obtained.

Abstract: A fuel assembly comprises a channel box, upper and lower tie plates fixed to the upper and lower portion of the channel box and a bundle of fuel rods enclosed in the channel box and retained by the upper and lower tie plates. The bundle of fuel rods includes ordinary fuel rods containing fissile material not containing gadolinia, and gadolinia-containing rods each containing gadolinia therein and having a larger outer diameter than that of the ordinary fuel rod. The gadolinia-containing rod has pellets enclosed in a closed cladding, and the outer diameters of the pellets also are larger than these of fuel pellets of the ordinary fuel rods.

Abstract: A safety device for a firearm which is adapted to be received in the breech of the firearm and which has a retaining member located in but extending through the body thereof, which retaining member can either be in a condition where it is in contact with the breech and acts to prevent outward movement of the device, to a position where it does not obstruct any such outward movement, whereby the safety device can be readily removed from the breech. Preferably, the two positions of the retaining means are controlled by a key operated lock.

Abstract: The overall drag upon a missile body after launch can be reduced and hence the range and average speed of the missile increased by reducing the aerodynamic drag at supersonic velocities attributable to missile hooks which are normally used to attach and launch the missile body from a launcher assembly. After launch a pair of splitter plates are popped up into position next to each missile hook. One splitter plate is positioned in front of the missile hook and a second splitter plate positioned behind the missile hook. The splitter plates are generally planar and arranged so that their planar surfaces are approximately parallel to the fore and aft direction of the missile body. In the illustrated embodiment, the splitter plates are erected into an operative configuration with respect to their missile hooks by rotating each splitter plate about a hinge line. The splitter plate is biased to assume the erect configuration by means of a torsion spring.

Abstract: Apparatus for sealing the seam between two conduits which includes two cooperatively threaded members for applying relative axial clamping forces to the conduits. When the two cooperatively threaded members are relatively rotated, they apply relative axial force to the conduits thereby causing a sealing means to be disposed in tight contact between the conduits.