Abstract: A method of manufacturing a heat exchanger in which a laminate prepared by laminating many sheets one upon another so that the neighboring sheets may be formed with bonded portions and non-bonded portions, is expanded in such a direction that the respective sheets are spaced from each other so as to form flow channels or passages between the sheets at the non-bonded portions, and which employs the steps of printing patterns of bonded material onto the sheets, laminating the sheets, and subsequently expanding the laminate of the sheets to form the heat exchanger.

Abstract: An electromagnetic fuel injection valve and a process for the adjustment of the armature stroke (H) of the fuel injection valve is proposed, which serves to inject fuel under low pressure into the suction pipe of an internal combustion engine. The fuel injection valve surrounds an armature guided in a valve housing. This armature is tightly fastened to a movable valve section which cooperates with a fixed valve seat in a nozzle body supported in a nozzle carrier. The armature stroke can be adjusted in an assembled condition of the fuel injection valve by moving the nozzle body in an axial direction. For this the stroke (H.sub.eff) is measured by an odometrical system (distance sensing system) in the assembled condition of the fuel injection valve while the electromagnetic system is excited and the fixed valve seat provided on the nozzle body is displaced with the aid of a pressing tool by the difference between the measured stroke (H.sub.eff) and the desired armature stroke (H).

Abstract: A circular array of rotatable blades formed from blades having an integral shroud with a leading planar surface and a trailing planar surface, the leading planar surface being generally parallel to an axial radial plane passing through the center of the root of the blade and the trailing planar surface, if extended, intersecting the axial radial plane passing through the center of the root of the blade to form an angle generally equal in degrees to 360 divided by the number of blades forming the circular array.

Abstract: A method of securing a funnel-shaped guide member in the bore wall of the p-shaped casing of a self-adjusting hydraulic tappet for overhead camshaft internal combustion engines comprising first introducing a funnel-shaped guide member (2) into the bore of the cup-shaped casing (1) made of a ferrous material and being initially unhardened, the guide member (2) bearing on a shoulder (9) of the bore and then in any sequence:(a) On that side of the guide member (2) which is opposite the shoulder (9), chiplessly forming material from the bore wall so as to bear sealingly on the guide member (2) and thus to locate the same relatively to the casing (1);(b) Sealing the joint between the cup-shaped casing (1) and the funnel-shaped guide member (2) by welding or soldering.

Abstract: A device wherein pharmaceutical capsules, each consisting of a separable bottom for receiving the said pharmaceutical product and a separable top for closing the said bottom, are fed in bulk into an input feedbox and sent, through a number of withdrawal and positioning ducts, to a rotary conveying device having two parts, one over the other, the first having a number of upper recesses for the tops and the second having a number of lower recesses for the respective bottoms, the rotary conveying device cooperating with a suction opening device designed to hold the tops inside the upper recesses and to suck the bottoms into the lower recesses, so as to separate the latter from the respective tops.

Abstract: A method for cladding a corrosion resistant high alloy material on surfaces of crossed cavities in a vessel of a high strength metallic material forming a valve casing or the like, the method including the steps of prefabricating first and second cladding structures of generally tubular shapes conforming with the crossed cavities from a thin sheet of a high alloy material; providing grooves on the surfaces of the crossed cavities for receiving corner members of a high alloy material to be located at joined corners of the first and second cladding structures at the intersection of the crossed cavities and end members of a high alloy material to be fitted on end portions of the cladding structures; assembling the first and second cladding structures, corner members and end rings into the crossed cavities; sealing the contacting surfaces of the assembled parts by welding the end members to the vessel and cladding structures; coalescing the assembled parts and the vessel by applying a high pressure to the claddin

Abstract: A method of assembling a plate-fin heat exchanger including the steps of providing a plurality of like substantially straight elongated plate-fins with spaced holes, bowing the plate-fins to increase their stability and accumulating a plurality of bowed plate-fins in stacked contiguous relationship to provide a bundle, providing a plurality of elongated substantially parallel tubes spaced from each other substantially the same distance as the spaced holes and oriented substantially perpendicularly to the bundle of plate-fins, transferring the bundle of bowed plate-fins to a carriage, straightening the bundle of contiguous plate-fins from the bowed condition to a straightened condition, and transferring the bundle of plate-fins in the stacked contiguous straightened condition onto the plurality of elongated substantially parallel tubes.

Abstract: The reinforcement of the crown of a piston of aluminum or aluminum alloy for an internal combustion engine comprises the preparation of a reinforcement member (10, 13) which is provided with apertures (11, 14), or reentrants. The reinforcement member is placed in a crown-forming part (18) of a piston die in a squeeze casting apparatus and the piston is squeeze cast. The molten metal penetrates the apertures, or enters the reentrants, and these are so shaped that when the molten metal has solidified, keys are formed which connect securely the reinforcement member to the aluminum or aluminum alloy. Further reinforcement members can then be readily brazed or welded to the first reinforcement member.

Abstract: Thin metal parts such as one eighth inch or less cast iron or one quarter inch or less cast aluminum are repaired by drilling a series of overlapping holes extending generally perpendicular to the crack at each end of the crack and at spaced locations along the crack. A lock of the general outline of the series of overlapping holes is fixedly secured in each of the series of overlapping holes. At least one hole having a diameter no greater than 0.200 inches is drilled in the crack between the locks so that the hole overlaps a portion of one of the locks. The hole is tapped with a tap having at least 27 threads per inch and a plug having the same number of threads per inch as the tapped hole is secured in the tapped hole thereby pre-stressing the locks and filling the gap of the crack. The plug is torqued until the torquing force exceeds the strength of the plug thereby snapping off a portion of the plug which extends beyond the surface of the part.

Abstract: An apparatus, for assembling a pair of fastener elements of a garment fastener, includes a safe-confirmation member mounted on a lower end of a vertically movable supporting rod supported by a frame in parallel relation to a punch-carrying plunger, and a drive means for moving the supporting rod vertically between an uppermost position in which the safe-confirmation member is disposed around a punch, and a lowermost position in which the safe-confirmation member is disposed around the die in the absence of the operator's finger or a tool near the die. Upon arrival of the safe-confirmation member at the lowermost position, a detecting means produces a command signal to start lowering of the punch toward the die.

Abstract: A system for automatically inserting the leads of electrical components into circuit boards is disclosed. In the preferred embodiment, an electrical component is acquired by the robot. The leads of the component have been trimmed and preformed such that they are substantially parallel with respect to each other with the leads differing in length. The robot positions the component at a fixed location relative to the axis of the robot and within the view of an optical sensor such as a TV camera. The sensor determines the location of each of the leads relative to a fixed location. A first rotary motion rotates the component about a selected axis of the robot through a predetermined angle and a second measurement is made. A second rotation positions the component 180.degree. from the original position and a third measurement is made.

Abstract: A camshaft for an internal combustion engine or the like is formed of an expandable steel tube and individual preferably hardenable cam and journal elements fixed together by a mechanical expansion of the tube by a mandrel or other device. Material selection and processes for low cost manufacture are disclosed.

Abstract: Disclosed is a tube-enlarging press in which clamping units are provided for preventing the fins and tubes used in a heat exchanger, from being buckled. The clamping units are provided with a through-hole for permitting the passage therethrough of mandrels falling outside of the area of the fin when the mandrels are lowered during the tube enlarging process. Therefore, the arrangements and preparations for replacement of the mandrels can be omitted.

Abstract: A hollow composite airfoil with an integral internal support rib of fluoroelastomer rubber is formed by bracketing the rib between two silicone rubber mandrels to form a core assembly having a desired aerodynamic shape, then building up on opposite sides of the core assembly separate stacks of laminae of a composite material of graphite (or carbon) and glass fibers impregnated with an epoxy resin, with the two stacks overlapping adjacent to the leading and trailing edges of the core assembly. Heat and pressure are then applied to the core assembly with the laminae thereon to bond together the laminae of each stack, then to bond the two stacks together along the overlapping portions thereof and to bond the two stacks to the rib to form a continuous shell around the core assembly. The mandrels are then removed. One open end of the resulting hollow airfoil is plugged and that end is inserted into a recess in a mounting platform with a predetermined clearance space therebetween.

Abstract: A parts assembly method and a device which utilizes this method, in which the structure for receiving parts member for assembly is set in prescribed attitudes, and the parts are automatically assembled in that member by assembly from a fixed direction, so that an automatic device having simple movements can be mainly used. The structure member being assembled can be set in an optional direction in which conditions are more suitable for the assembly. There is no increase in cost, and the parts are reliably and automatically assembled into the receiving member.

Abstract: A machine for dismantling, unloading and transferring to a disposal facility, nuclear reactor structure and/or components, which have been irradiated during operation of the reactor. The machine includes in one example a gantry mounted on a rigid, undismantled part of the reactor such as rails on the refuelling level of the reactor, a carriage angularly movable on the gantry, a platform movable linearly on the carriage, a mast on and axially movable relative to the platform, a manipulator mounted on the mast for angular and linear movement relative thereto, a variety of tools selectively mountable on the manipulator for effecting dismantling of reactor structure and/or components, and hoist means movable along a beam rotatable about the reactor center line and alignable with other beams to allow transfer of the hoist means from one beam to another. Alternative arrangements for varying the elevation of the mast are also disclosed.

Abstract: Prepackaging the various components of an engine cylinder assembly as an exchange or overhaul kit is useful in servicing or overhauling a single cylinder of a multiple cylinder engine. The heretofore known devices for holding the components of the engine cylinder assembly together were primarily used with small engines where the weight of the components was sufficiently low so as to not cause any handling difficulties. The subject apparatus includes a pair of brackets which positively grippingly engage the flange of the cylinder liner and a lifting element which is releasably attached to the piston with bolts threaded into threaded holes in the piston such that a portion of the brackets is sandwiched between the lifting element and the piston. The apparatus is positively engaged with the components of the engine cylinder assembly and positively maintains the components in fixed relationship with one another.

Abstract: The method of providing an order of magnitude manufacturing cost reduction in the manufacture of fluid flow restrictors by employing components produced by punch press stamping operations. The flow restrictor is formed of a plurality of annular plates. Half of the plates are punched to form concentric rings of tabs at right angles to one surface thereof. The plates with and without the tabs are alternately stacked concentrically and brazed together to form the fluid flow restrictor having a central core communicating with the exterior surface through a plurality of tortuous paths.

Abstract: An apparatus and a method for remotely refurbishing valve seats are disclosed herein. The apparatus generally comprises a welding assembly having a welding head for depositing a bead of metal around the valve seat, and a positioning assembly detachably mountable onto the valve body for angularly and radially moving the welding head around the valve seat at a selected point along the axis of rotation of the seat. Additionally, the apparatus includes a control means operatively connected to the positioning assembly for controlling the movement of the welding head around the valve seat. In operation, the control means, which may include a microprocessor, first angularly moves the welding head 360.degree. around the circumference of the valve seat, then moves the welding head to a different point along the axis of rotation of the valve seat, and then rotates the welding head 360.degree. around the valve seat again for as many cycles as is necessary to rebuild the valve seat.

Abstract: The disclosure relates to a process for the fabrication of low cost dual property turbine rotors having blades that are diffusion bonded to a blade ring that is simultaneously diffusion bonded to a central hub.