Abstract: This is a microelectronic multilayer circuit structure having circuit compatibility encapsulated within the circuit package including conductive electrical interconnection means formed by uniquely metallizing the "via" and/or blind interconnection holes within the circuit package. The assembly process provides means of uniformly metallizing the interlayer connecting holes.

Abstract: A process for seating a lockbolt with a positioned collar, swaging the collar onto the seated lockbolt and breaking off the pintail all in one operation. A single source of hydraulic power pulls a nose piece with gripper jaws to seat the lockbolt and to break off the pintail, and to move an anvil in the opposite direction to swage a collar onto the seated lockbolt. A combination air and hydraulic system sequences these steps.

Abstract: A multi layer printed circuit interconnection system together with pillars for mounting integrated circuit components is progressively formed layer by layer by successive sequences for each layer, involving using a photo resist to produce a pattern of apertures defining circuit tracks and the pillar positions, depositing metal to form the tracks and the pillars and replacing the remainder of the resist with insulation material. Openings co-operating with the pillars, for the circuit elements are produced during formation of the outermost insulation layer of the circuit system.The circuit elements are mounted on the pillars and the connections between the elements and the printed circuit system are formed by using a further one of said sequences.

Abstract: A construction having holder means for supporting and guiding at least one flexible energy-transferring line. The chain construction being attached at one end thereof to a connecting point and at its other end to an energy-consuming or energy-producing apparatus capable of moving in the longitudinal direction of the line. The holder means comprising line support means arranged to co-act with parallel links, adjacent ones of said links being joined together in a manner such that said links can pivot through a pre-determined angle. Each link is provided with a support surface, said surfaces being mutually arranged to so as to lie in one and the same plane when the holder means are oriented in one and the same plane. At pre-determined links there are provided support wheels, the peripheral surfaces of which wheels extend over adjacent support surfaces.

Abstract: A hydrostatic extrusion method and apparatus for the extrusion of tubes is disclosed wherein the simplified structure of the nose or tip portion of the billet and the cooperating surfaces of the die defining the die cavity and those of the mandrel facilitate an improved initial sealing among the associated surfaces of the die, billet and mandrel. Such an initial sealing is effected between such interfaces of the members and billet at a point which is located substantially rearwardly from the position at which the actual extrusion to the final tubular configuration occurs between the bearing portion of the die and the cooperating sizing portion of the mandrel. Such structure and method permits the extrusion of tubes having walls of asymmetric or non-circular configurations in cross section, even those of complex configurations.

Abstract: A method of mounting a natural draft cooling tower having a tower mantle suspended on a central support projecting beyond the upper rim of the mantle which is clamped and tightened between a pressure ring at the upper rim of the mantle and a foundation. In order to mount the cooling tower mantle, the pressure ring lying on the ground and coaxially surrounding the central support is suspended on a lifting ring by means of a plurality of supporting cables exceeding in length the radius of the pressure ring. This lifting ring is guided on the central support, suspended on a plurality of pulling elements which are lifted by at least one lifting device detachably connected to the central support, as a mantle section corresponding to the advance of the lifting device is displayed. After the lower rim of the cooling tower mantle has been connected to the foundation, the mantle is tightened by the lifting device.

Abstract: A separator of solid boron nitride is utilized to prevent diffusion bonding between an alloy being worked at high temperature and the components of working apparatus.

Abstract: A method for manufacturing a connecting circuit comprises essentially the stages of deposition of conductors upon a first metal which is etchable by chemical agent and, said semiconductors resisting said agent and the replacing of said first metal which have been removed by an insulating material in which said conductors are embedded, and hollowing out said material to form a cavity and to open into said cavity one of the ends of said conductors.

Abstract: An apparatus and method for automatically replacing damaged conveyor grates which can be remotely controlled. The apparatus is disposed slightly above the empty, return side of the conveyor at the cool end, and performs its function in this maintenance area. The apparatus employs a plurality of working heads which remove the damaged grate and replace it with a new grate without interrupting conveyor motion. The working heads are suspended above the conveyor in the maintenance area by a plurality of carriages which permit the working heads to access any grate within the maintenance area. The carriages also allow the working heads to move with the conveyor during the grate replacement cycle. Although the manipulation of these heads and carriages is largely automatic, the operator can initiate, direct and observe the apparatus' movements from a remote station thereby isolating him from a hazardous environment.

Abstract: A technique for the fabrication of thin film electrets designed for use in electroacoustic transducers involves depositing a thin film of aluminum or titanium upon a perfluorinated foil and etching away the film prior to deposition of gold. The resultant structure evidences superior adhesion characteristics and electrical characteristics comparable to those previously described.

Abstract: A chain making plant for the manufacture of two chains at a time by means of a series of operating stations arranged along a substantially straight course. Two conveyor units are provided, each of which successively presents a depending portion of one chain to the operating stations. Each of the conveyor units comprises a carriage running on a track extending along the course and a transverse chain conveyor supported by said carriage, said transverse chain conveyor being arranged to feed the chain outwards step by step and being capable of being shifted transversely as a unit with respect to the carriage.

Abstract: There is disclosed a method for making tined electrical contacts from a continuous metal strip as the strip intermittently moves through a plurality of work stations. The method comprises the steps of advancing the metal strip; positioning a portion of contact material in alignment with an area on said strip, attaching said portion to said area, advancing the metal strip, and thereafter cutting and forming the strip to provide an electrical contact.

Abstract: A vent structure for reliable long term operation at high temperatures is fabricated by annealing a tubing of predetermined length and size, placing a predetermined number of strands of stabilized zirconium oxide yarn of predetermined diameter longitudinally into one end of the tubing a predetermined distance therein, flattening and coiling and pressing the end portion of the tubing containing the yarn at predetermined pressures, annealing the formed tubing, and installing a particulate filter in the undeformed (normally lower) portion of the tubing. For use in venting helium generating reactor control pins located under hot molten sodium, a vent assembly including the vent structure and providing an air lock between the outer molten sodium and the vent is affixed to the upper end of each control pin.This is a division of application Ser. No. 376,527, filed July 5, 1973, now U.S. Pat. No. 3,803,816.

Abstract: A machine and method for making spiral pipe from a continuous strip of sheet metal including a corrugating mill which forms corrugations in the strip and drives it through a three-roll bending mill which bends the strip into helical convolutions and guides adjacent edges thereof into an interlocking relationship and a pair of lock up rolls for crimping the interlocked edges of the convolutions into a continuous seam, which rolls are manually or automatically adjustable radially relative to the pipe axis whereby its diameter may be accurately controlled. Adjustment of said rolls radially inwardly effects a diameter increase whereas adjustment outwardly decreases the diameter of the pipe.

Abstract: Apparatus for continuously and automatically molding sockets onto an insulated flexible single pole cable comprising a deflecting mechanism for forming a series of bights in the cable, and a transfer guide for transferring the bights to a pair of spaced apart circular supports. The supports are rotated about a common axis and the various steps involved in making the sockets are performed at each bight as the two supports are intermittently rotated.

Abstract: A method and means for inserting pins into predetermined locations of a printed circuit; said means are carried along by an adhesive strip and after removal of the latter, the foremost pin drops into horizontal registry with a pusher member urging it into vertical registry with a funnel-shaped member brought over the desired location of the circuit while a pneumatic circuit operating for each pin insertion drives said foremost pin through the funnel-shaped member into said location.

Abstract: A liquid crystal cell is made by covering a wafer with an electrode system. A second insulating and transparent wafer is covered with a second system of semi-transparent electrodes. A wall of controlled thickness is deposited on a wafer around a periphery thereof. A metallic thread is deposited on a wafer with the same perimeter as the wall. The wafers are applied to each other and heated to fuse the thread on the top of the wall to join and seal the wafers with a liquid crystal between them within the wall.

Abstract: Method of manufacturing a catalyst type exhaust gas purifier utilizing a divisible vessel to hold an integrated catalyst, while a packing is inserted at the junction between the divisible parts. The space between the vessel and the catalyst is filled with a castable refractory material, which is then solidified, after which the packing is removed and then the parts of the vessel are drawn together at said junction.

Abstract: An applicator is provided for inserting a terminal in a hole in a circuit board comprising terminal insertion tooling, having an elongated insertion blade and a pair of preloaded spring fingers, and an anvil including a retractable locating and gauging pin surrounded by an actuator collar. A hole in a circuit board is positioned on the locator pin and the circuit board depressed against the actuator collar. The locating pin is retracted. A ram extends the terminal insertion tooling. The preloaded spring fingers hold the terminal in alignment with a hole in the circuit board and the tool inserts the terminal into the hole. The insertion tool is then retracted and the retractable locating pin is extended to permit positioning of another circuit board hole on the locating pin and subsequent insertion of another terminal.

Abstract: Disc brake backing plate with a cup-shaped housing having in one embodiment a weight sandwiched between two resilient plugs and in a second embodiment, a plurality of scrap punch metal particles mixed with and incorporated in a resilient carrier.