Abstract: A nozzle assembly for delivering molten metal to a die casting mold comprises a relatively large diameter cylindrical main body section, a relatively small diameter inlet tip section, and a relatively small diameter outlet tip section. Separate heater elements are wrapped around the respective sections and a controller functions to maintain set point body temperatures in each nozzle section in response to signals received from thermocouples separately associated with each nozzle section.

Abstract: There is disclosed a removable torque-transmitting body, such as a key and methods for securing the key in, and releasing it from, a power assisted wrenching tool for the attachment of fasteners, particularly frangible fasteners, in loose and interference fit applications. The key has a main shaft portion with a distal, torque-transmitting head at one end, and an opposite end of reduced thickness and non-circular cross section, with a transverse groove therebetween. The wrenching tool has a subassembly of an outer socket member and an elongated key holder slidably mounted therein, under spring resistance, with a ball detent mounted in a cross bore in the key holder. The reduced thickness end of the key is inserted into the receiving keyway of the holder, and an axial force can be applied to seat the key, with the detent ball received in its transverse groove.

Abstract: A tool holder for use with a mounting system including a spindle having a central frusto-conical bore and a draw bolt positioned centrally in the upper end of the spindle bore. The tool holder includes a central cylindrical main body portion having an annular groove in its upper end; a lower portion extending downwardly from the main body portion and including attachment means for receipt of a suitable tool; and a reduced diameter conical neck portion extending upwardly from the upper end of the main body portion, concentrically within the annular groove, sized to pilot upwardly into the conical bore of the spindle and having a threaded central bore at its upper end threadingly coacting with the lower end of the draw bolt to pull the holder into the spindle.

Abstract: A die casting apparatus for pumping molten metal from a heated container to a nozzle communicating with an inlet of a mold including a charging mechanism for charging the apparatus with a predetermined amount of molten metal from the container and a multi-piece holder removably joined together by fastener means. The holder defines a shot barrel chamber and a gooseneck chamber extending in a curved path from the charging mechanism to the nozzle. A refractory shot barrel is removably positioned in the shot barrel chamber in communication with the molten metal in the heated container, and two refractory insert halves are removably positioned in the gooseneck chamber and coact to define a gooseneck passage at their parting interface providing fluid communication between the outlet of the shot barrel and the inlet of the nozzle.

Abstract: A threaded pin has flutes along the threads formed by roll-forming threads over a preformed section having either flat sides or dished sides. The major diameter of the threads lies along ridge crests bordering the flutes, and the minor diameter of the threads lies at the base of the flutes. The threads extend along the major diameter in each of the ridge crests for a distance on an order of magnitude of the distance across the mouth of each flute. The preformed section is formed by extrusion. The flutes provide space for material from a threaded collar forced into them to provide a thread lock.

Abstract: A failure sensing accumulator device and to a system embodying the same. The accumulator and system are characterized in that various failure situations are sensed by a capacitive sensor apparatus which is capable of detecting failures at an early stage and localizing the damage to the system resulting from such failed accumulator.

Abstract: The present invention relates to a fail-safe actuator of the type in which a piston riding in a cylinder is urged toward a port end of the cylinder by an energy storage spring. The piston is prevented from moving toward the port end so long as liquid remains entraped between the piston and port end, movement of the piston toward the port end resulting in shifting of a cable and consequent rotation of a quadrant about which the cable is arrayed to rotate a shaft. A rolling seal diaphragm is interposed between the piston and cylinder whereby leakage is prevented over protracted use periods, and the piston is isolated from liquid between the port and piston. Optionally, an annulus disposed between the piston and cylinder bears against the roll seal portion of the diaphragm preventing extrusion or permanent distortion of the diaphragm under high pressure conditions.

Abstract: A failure sensing accumulator device and to a system embodying the same. The accumulator and system are characterized in that various failure situations are sensed by a capacitive sensor apparatus which is capable of detecting failures at an early stage and localizing the damage resulting from such failure to the failed accumulator.

Abstract: The present invention is directed to an accumulator device and method of making the same characterized in that the bladder support member is connected to the body of the pressure vessel by a resistance weld between relatively thin gauge portions of the vessel and the bladder support, the device being so constructed and arranged as to be susceptible of operation under high pressures notwithstanding the thin pressure vessel section as a result of the reinforcing effects of a cap member secured over the open end of the accumulator.

Abstract: A collar threads onto a shear pin. When the collar engages a surface of a workpiece, resistance to further threading increases. When sufficient resistance to threading occurs, a setting driver upsets lobes of the collar and forces these lobes radially inward toward the axis of the collar. Material of the collar inside the lobes responds to deformation of the lobes and flows radially inward against the shear pin to lock the collar, shear pin and workpiece together. The driver then rotates freely and a joint has been made with a predetermined clamp-up load and its component parts locked together.

Abstract: The present invention is directed to an accumulator device and more particularly to an accumulator device having a spherical reservoir chamber which is preferably formed by hydraulic distension of a shell. A casing, bladder, and mounting fixture are combined with the shell by a metal forming operation to thus provide an efficient accumulator with a minimum of forming operations.

Abstract: A hydraulic accumulator or pulse dampener device susceptible of being repaired by replacing the bladder assembly through a removable gas charging valve. The device is characterized by a structure connecting the bladder assembly to elements of the gas charging valve assembly whereby a secure connection between the parts may be effected without damaging the bladder.

Abstract: The present invention is directed to the method of making a dependable, low cost, low pressure accumulator characterized by the provision of a bladder support sub-assembly secured to an end cap member by an annular weld line, the connection between the noted components being effected prior to insertion of the assembly and end cap into a cylindrical pressure vessel component, whereby the opposed surfaces in registry with the weld are exposed to ambient temperatures, eliminating the danger of damage to the bladder in the course of welding. The bladder sub-assembly and end cap are thereafter inserted into and weldingly connected to a pressure vessel, the open mouth portion of which is inwardly deformed to overlie the end cap and retainer portion of the bladder sub-assembly, dependably to secure the components together and to effect the desired seals between adjacent components.

Abstract: A grommet attached to a top panel captures a stud nut of a panel fastener through a retaining ring held by the grommet. A complimentary stud assembly attaches to a subpanel and receives the stud nut to clamp the panels together. The grommet has a stand-off base that projects axially from a counterbore in the top panel to form a barrier for a gasket. A flared end of the grommet and the standoff base clamp the top panel between them. The retaining ring compressively bears radially against the stud nut to retain it in any desired axial position and maintain axial alignment of the stud nut. The stud nut can draw completely into the top panel. The stud nut has a clear-through bore threaded at one end. A wrenching recess, defined by a hardened insert, occupies the other end of the bore. A plug separates the wrenching recess from the threads. A basket of the stud assembly attaches to the subpanel by rivets. A barrel attaches to the basket through lugs engaged in slots of down turned wings of the basket.

Abstract: A torque control tool for installing and removing threaded fasteners couples a driven section of the tool with a drive section of the tool through detent balls of the former and a clutch plate of the latter. The clutch plate keys to a stem of the drive section for rotation together and has semi-spherical sockets of substantially the same radius of curvature as the balls receiving the balls and lying on a circle about a rotational axis of the driven section. A carrier plate cages the balls so that they index with the clutch plate sockets and keys to the balance of the driven section to transmit torque to it. Reliefs to the side of each socket and centered on the circle of the sockets permit the detent balls to uncouple from the drive section at an applied installation torque less than the uncoupling torque in the opposite, removal direction.

Abstract: A collar threads onto a shear pin. When the collar engages a surface of a workpiece, resistance to further threading increases. When sufficient resistance to threading occurs, a setting driver upsets lobes of the collar and forces these lobes radially inward toward the axis of the collar. Material of the collar inside the lobes responds to deformation of the lobes and flows radially inward against the shear pin to lock the collar, shear pin and workpiece together. The driver then rotates freely and a joint has been made with a predetermined clamp-up load and its component parts locked together.

Abstract: A blind fastener has a nut with a threaded bore, a core bolt having external threads for receipt by the nut, and a sleeve for expansion by the head of the core bolt and a shoulder of the nut to form a blind side folded bulb against the backside sheet of a joint. A thin-walled, tapered section of the sleeve fits over a relieved section of the nut and bears against the shoulder of the nut. The taper is such that the thin wall increases in thickness away from the shoulder. An axially adjacent thick-walled section of the sleeve bears on the core bolt head and resists sleeve tuck-out over the core bolt head, concentrically aligns the sleeve on the core bolt, and assures that the thin-walled section of the sleeve is the section that bulbs. During setting, the sleeve expands by compression exerted on it by the core bolt head and the shoulder. The thin wall section folds against the backside sheet with an ever-increasing area as tightening continues.

Abstract: A lock in which a bolt is slidable by rotation of a pivoted handle connected to the bolt by a toggle link pin-connected to the bolt and handle. The handle is channel-shaped in cross section, and conceals and protects the bolt and toggle link in the locked position. The handle moves through 180.degree. between locked and unlocked positions. A key operated barrel lock has an exterior detent through which the bolt passes, in the release position of the barrel lock, and the bolt has a recess which receives the key-operated barrel lock in the locked position thereof.

Abstract: A lock has a bolt and a key-operated barrel at right angles, and with their axes coplanar. A pinion has teeth which engage teeth on the bolt and teeth on an extension of the barrel. The pinion, bolt and barrel are in a longitudinally split housing, held together by screws, the pinion having a slot to receive one of the screws. The barrel lock moves a latch plate transverse to its axes, so as to extend into a slot in the housing to prevent movement of the barrel.

Abstract: A mechanically locking fastener has external threads for installation in the threaded bore of a workpiece. A lock ring has internal radial serrations locked in serrations of the fastener proper, and external radial teeth of a form for gripping the wall of the workpiece bore when turning moments tend to loosen the fastener and to pass over the bore wall upon rotation in the opposite direction. The lock ring has a slip plane to permit contraction of the ring to a diameter no greater than the major diameter of the fastener and expansion of the ring when the fastener undergoes moments tending to loosen it. The fastener proper may be a stud or an insert. An external chamfer of the ring bears against a cooperating internal surface of the workpiece to positively determine the axial location of the insert with respect to the workpiece.