Abstract: A time delay gas generator for military missiles, characterized by very long shelf life and accurately-determined time delay. Time delay powder is layered at high pressure, and causes heating of a metal disc at the end of a time delay interval that is accurately known. Such heating ignites an output charged to generate gas, the gas breaking a closure and performing a function in the missile.

Abstract: A pyrotechnic piston device the housing of which has a cylindrical internal wall in which is mounted a piston. A pyrotechnic device is disposed adjacent the piston. A metal-to-metal seal is formed between the piston and the cylindrical wall to prevent blow-by of products of the explosion. Two types of constructions are provided to prevent bounce-back of the piston after it has reached the forward end of its stroke.

Abstract: A delayed action switch embodied in a tubular casing adapted to be incorporated in a missile or a guided projectile. For example, the Redeye missile is activated by a soldier who keeps it against his shoulder. As he pulls the trigger, the missile takes off toward a specific target such as a tank, truck or the like, a distance of a few seconds away from the soldier. Should the missile drop near the soldier and explode, the soldier would be killed; but with the delay switch of this invention incorporated in the missile, it would be deactivated before it hits the ground. Consequently, the missile would be a "dud", a non functional device. In general, the switch of our invention includes, in succession within a tubular casing, a priming charge which is ignited when the missile is first propelled into the atmosphere, and which fires an ignition charge which in turn ignites a delay charge.

Abstract: The invention utilizes the ductility of a metal such as gold or silver or other suitably ductile metal having a relatively high fusion temperature, for self-lubrication of a bearing having a coating including exceedingly small particles of such metal in a mixture with load-bearing particles, also exceedingly small, such as tungsten or nickel or a metallic oxide in a coating on a load-bearing surface of such bearing.The invention contemplates not only such a bearing surface but also a method of producing such surface on one element of a bearing.

Abstract: A pin puller comprising a piston having a pull shaft extending from a cylinder in which the piston is slidable, is actuated by an explosive charge contained within a cartridge disposed laterally of the cylinder. The charge, when ignited, develops a pressurized gas which is directed into the cylinder through a lateral port therein, and acts against the piston to move it in a direction to exert a pull upon the shaft and a pull-actuated device connected thereto.

Abstract: A method of repairing arthritic joints in which the bone surfaces of a knee, hip, shoulder, elbow or other articulation are cleaned of the inflammation caused by the arthritis without removing any of the bone of the joint, and then inserting into the joint a thin, dished bearing member of woven, high tensile strength material impregnated with high molecular weight polyethylene or equivalent material, and cementing one face thereof to the cleaned surface of the bone of one of the joint members, the opposite face of the bearing member being extremely smooth and polished so as to slide easily against the cleaned bone surface of the other joint member.

Abstract: A finely divided hard metal powder of low thermal expansion and high corrosion and acid resistance, intimately mixed with a colloidal dispersion of tetrafluoroethylene and a thermoplastic, thermosetting adhesive, is applied to one side of a backing member of woven, high tensile strength material in several applications so as to saturate the material to a substantial depth, providing a long-lasting wear surface.

Abstract: A piston, backed by a resilient disc, both slidable within a cylindrical case, is provided, on its leading end, with a penetrable conductor pellet, sheathed within an insulator cap. Upon firing of an explosive charge of disc form, arranged behind the piston with a polyethylene disc interposed between the charge and the piston, the latter will be driven forwardly against a pair of piercing points on the ends of a pair of conductor wires mounted in an insulator header in the leading end of the case, the driving force of the explosion being sufficient to cause the conductor wire points to pierce entirely through the insulator cap and to become embedded in the conductor pellet, thus closing a circuit across the conductor wires.

Abstract: A piston, normally contained within a cylinder, is projected by electrical detonation of an explosive charge which is contained within the cylinder between the piston and a sealed end of the cylinder through which a detonation contact extends to the charge. A split ring, retained in an annular peripheral groove in the piston, is normally contained under compression within the cylinder, but is resiliently expandible to a diameter larger than the internal diameter of the cylinder when released therefrom by projection of the piston under the expanding gases of the detonated charge, and thereby becomes operative, by abutting engagement with the end of the cylinder, to lock the piston in its projected position, and to hold the reactive load of whatever machine part has been actuated by the piston.