Abstract: A method and apparatus for coldworking of holes using a split mandrel. The apparatus uses a mandrel having radially directed slots to permit contraction of its outer diameter as it is fitted within a hole. The mandrel contains a pilot inside the mandrel. After placing the mandrel and pilot within a hole to be coldworked, the pilot is pushed into the mandrel expanding the mandrel. The pilot and mandrel are then withdrawn through the hole, thereby coldworking the hole.

Abstract: A method and apparatus for coldworking of holes using a split mandrel. The apparatus uses a mandrel having radially directed slots to permit contraction of its outer diameter as it is fitted within a hole. The mandrel contains a pilot having a larger diameter extending from the mandrel. After placing the mandrel and pilot within a hole to be coldworked, the pilot is pulled into the mandrel solidifying the mandrel. The pilot and mandrel are then withdrawn through the hole, thereby coldworking the hole.

Abstract: A quick change tool chuck system including:(a) a chuck having: a cylindrical housing member having a lateral aperture for receiving two diametrically opposed jaw members; two jaw members for gripping the shank of a tool, each of the jaw members having an outer surface which is sloped, and each of the jaw members also having an inner surface forming one or more driving surfaces for rotating the shank of a tool and multiple holding surfaces for clamping the shank of the tool; and a cylindrical sleeve member slidably positioned over the housing member, the sleeve member having two diametrically opposed wedge members positioned on the interior surface thereof; and(b) a tool having: a work performing portion; and a round shank connected to the work performing portion, the shank having multiple identical planar surfaces recessed therein, each of the planar surfaces being spaced an equal distance from the crown of the shank, and at least two of the planar surfaces being in contact with at least two of the driving su

Abstract: A method and apparatus for coldworking of holes using a split mandrel. The apparatus uses a mandrel having a larger diameter end and radially directed slots to permit contraction of its outer diameter as it is fitted within a hole. The mandrel partially contains a pilot in its "at rest" state. After placing the mandrel and pilot within a hole to be coldworked, the pilot is pushed fully into the mandrel solidifying the mandrel. The pilot and mandrel are then withdrawn through the hole, thereby coldworking the hole. An air logic circuit accomplishes the pushing of the pilot within the mandrel and retraction of the pilot and mandrel.

Abstract: A flexible lightweight short pulse power cable assembly for electrical power transmission, e.g., for transmission of electrical power at 20,000 volts at short pulse D.C. halfwave currents of 30,000 amperes. The cable for electrical transmission utilizes an inner conductor and an outer concentrically disposed conductor, the inner and outer conductors having substantially equal cross-sectional areas and consequent resistances to equal and opposite current flows in the respective conductors thereby placing the cable current forces in compressive balance and further reducing electro-magnetic interference from transmission of power through the cable.

Abstract: A flexible lightweight short pulse power cable assembly for electrical power transmission, e.g., for transmission of electrical power at 20,000 volts at short pulse D.C. halfwave currents of 30,000 amperes. The cable for electrical transmission utilizes an inner conductor and an outer concentrically disposed conductor, the inner and outer conductors having substantially equal cross-sectional areas and consequent resistances to equal and opposite current flows in the respective conductors thereby placing the cable current forces in compressive balance and further reducing electro-magnetic interference from transmission of power through the cable.

Abstract: A sealant applicator apparatus is disclosed of a form adapted for incorporation in automatic riveting machines and the like as one of the positionally indexed, sequentially operated tools in the machine along with the usual drill, countersink tool and riveter. Mounted and actuated under controlled pressure in position to pick up a bead of sealant from a supply source during one of the indexed functions of the riveter machine, the sealant applicator later in the sequence is automatically positioned over the countersunk hole and actuated under controlled pressure to deposit the bead of sealant on the countersink surface as a step preceding insertion and bucking of the rivet.

Abstract: An apparatus for utilizing electromagnetic energy for producing high impact forces by means of a ram propelled against a work piece. The work center of the apparatus includes a ram assembly of bolted construction having a hollow ram shaft, which ram assembly includes a gap between opposing conductive surfaces including associated fastener screws of driving disc and ram shaft of at least about five-sixteenths of an inch. A solid mass recoil assembly provides integral housing and recoil mass, enabling aerostatic bearing functioning, and also lowers shock and vibration levels to operator and equipment.

Abstract: An apparatus for utilizing electromagnetic energy for producing high impact forces by means of a ram propelled against a work piece. The work center of the apparatus includes a ram assembly of bolted construction having a hollow ram shaft, which ram assembly includes a gap between opposing conductive surfaces including associated fastener screws of driving disc and ram shaft of at least about five-sixteenths of an inch. A solid mass recoil assembly provides integral housing and recoil mass, enabling aerostatic bearing functioning, and also lowers shock and vibration levels to operator and equipment.