Abstract: A wire installing tool for inserting wire into a multifingered electrical connector comprising a handle containing a reversible elongated stem having recesses on both ends; the recesses being sized differently in depth to adapt to electrical connectors having various thicknesses, and a disposable blade releasably mounted on the stem and aligned with the recess to form a cavity which is bounded on three sides by the stem and on the fourth side by the blade, the depth of the cavity dependent upon which end of the stem is aligned with the blade. At least one end of the blade has a two-sided edge, the outer side shaped at an optimum shear angle for shearing wire to be inserted in the electrical connector, and the inner side of the edge being shaped to allow for a wire tail to protrude a predetermined distance from the electrical connector.

Abstract: A tension spring capable of large elastic deformation and having a high resistance to breakage and particularly, but not exclusively, for use as an artificial prosthetic ligament. The spring comprises an elongate elastic core having a low modulus of elasticity and defining opposed ends. A tensionable wrapping of thread having a high resistance to breakage is disposed in contact about the core to compress the core and to cause it to elongate axially upon opposite relative axial displacement of opposed ends of the wrapping secured to traction means.

Abstract: A process for the preparation of extrudable polyimide granules comprising heating and compacting a powder containing polyimide particles to form a partially densified porous mass and crushing the mass to form granules which may be ram extruded to give uniform articles of high strength.

Abstract: Cutting apparatus with three blades, for trimming three sides of an inner book or the like, having a drive system which permits the simultaneous trimming of two opposed sides of the work closely followed by the trimming of the third side. Operation of the third cutting blade while the other two are still in motion is permitted by driving the simultaneously operated blades along a multi-directional orbital path.

Abstract: A control mechanism for automatically raising, swinging and lowering the pickup arm of a record player in response to the positioning of a finger of a user. The user's finger will selectively bridge pairs of contacts to establish an electrical circuit and generate an input signal to logic circuitry. The logic circuitry provides control signals which, through suitable transducers, control the motion of the arm.

Abstract: An electrical circuit tester for use in testing terminal blocks having protruding electrical connectors, the tester comprising a body made from an insulating material, the body having a plurality of circuit testing assemblies, each assembly including a chamber, each chamber including a chamber extension extending to the exterior of the body and capable of receiving the electrical connectors. Positioned within each chamber is a piston having a piston rod extending therefrom, the piston rod extending into the chamber extension. The chamber includes a piston retaining wall having an aperture through which the piston rod moves. When the piston rod is in its fully extended state, there is room in the chamber extension to receive the electrical connector. Positioned within the chamber is a conductive grommet and a resilient conductive spring which contacts the grommet and functions to urge the piston and piston rod to the fully extended position.

Abstract: A calibration apparatus and method is presented for calibrating an ultrasonic extensometer which is used to determine the average level of stress in a bolt or stud. The calibration apparatus uses linear displacement transducers and force measuring apparatus to accurately determine the stress-strain relationship of a bolt or stud. Simultaneously, readings on an ultrasonic extensometer strain measuring apparatus are monitored, and the ultrasonic extensometer is calibrated in accordance with the linear transducer and force measuring readings.

Abstract: A process for manufacturing an unground bearing suitable for high-speed applications comprises forming a subassembly including the inner race, balls, and retainer; the subassembly being fabricated in a fixture which receives the balls from a standard ball feeding machine. The subassembly is, after completion, removed from the fixture and positioned in one of the halves of a split outer race, the other half of the split outer race is placed over the subassembly and an outer shell is thereafter crimped over the outer races to hold the bearing together.

Abstract: An electrical circuit board is prepared by application, over a conductive foil which is supported on a substrate, of a hot-melt resin in accordance with the desired circuit pattern. The resin may be applied by screen printing and, after curing, will function as a resist coating for the conductive material during subsequent chemical removal of the foil from unprotected areas to form the individual conductors of the pattern. During subsequent connection of the circuit to other components contact areas on the individual conductors may be exposed by contacting the resin coating with molten solder.

Abstract: An overlay is applied to a substrate, for example in the manufacture of book covers, by serially wrapping the overlay around a first pair of oppositely disposed edges of the substrate, folding the corners of the overlay into the substrate and wrapping the overlay around the two remaining edges of the substrate. The first wrapping of the overlay around a pair of edges of the substrate is accomplished by feeding the substrate with the overlay adhered thereto through a wrapping station alternately in opposite directions and deflecting the overhanging portion of the substrate at the leading edge out of the path of motion so that these overhanging portions may be engaged by a wrapping tool.

Abstract: The tip of a dental scaler is caused to move in a linear path by converting the rotary motion of a pneumatic turbine to periodic vibrations. The turbine will be continuously operating and the vibratory tip drive will be produced only when the tip is urged against a tooth.

Abstract: A non-contacting surface contour measurement device includes movable member which can selectively be actuated to form a hermetic enclosure about a transmit and/or receive antenna. The measurement device, when employed in a blast furnace, need be exposed to the furnace environment only during measuring modes which constitute a small portion of the furnace operating cycle.

Abstract: An apparatus for controlling the pressure in a tracheal cuff used with a tracheal tube to seal the walls of the trachea with respect to the tube, the cuffed tracheal tube being of the type used with an automatic respirator which cycles between an inhalation mode and an exhalation mode.

Abstract: A device for thread stitching layers to form a book wherein the stitching apparatus comprises a conveying mechanism for transporting a plurality of open layers in spaced relation to each other, the conveying device transporting the layers with respect to at least one spiral sewing needle which is rotationally driven, the point of the spiral needle penetrating into the layer backs and exiting the layer backs to stitch the layers together in sequence.

Abstract: A loudspeaker enclosure for use in housing loudspeakers, the loudspeaker enclosure comprising a casement having a generally rectangular cuboid shape, the casement including three layers. A first layer and a second layer comprise sheets of metal and are space apart to provide for an inner layer of plastic material. In one embodiment of the invention, the casement is formed by bending a sheet of material including the three aforementioned layers to conform to a generally rectangular cuboid shape. In another embodiment of the invention, the first layer of metal is bent to a rectangular cuboid shape defining four interior surfaces. A flat layer of plastic and a flat layer of metal is applied to each interior surface of the casement. The casement provides a wall having a relatively high density, a high modulus of elasticity and a high damping factor.

Abstract: A thermodilution injection system comprising a syringe for delivering a measured amount of injectate in an accurately predetermined time period, and an injectate cooling device positioned in serial relation to the syringe for cooling the injectate when it is dispensed from the syringe.

Abstract: The bonding of phenolic resins and phenolic molding materials to copper is significantly improved by the addition to the phenolic material of elemental sulfur in a weight percentage from 0.005% to 1%, the weight percentage of sulfur being preferably from 0.01% to 0.2%.

Abstract: A beam of ultrasonic energy emitted from a stationary transducer is scanned through the use of a steerable mirror which is positioned in the path of the beam between the transducer and a target. The mounting means for the steerable mirror enables the beam of ultrasonic energy to be aimed as desired and the beam will preferably be scanned along a line and the scanning line may be shifted in a generally transverse direction to accomplish "Multiple plane" scanning.