Abstract: An engine which employs a cam follower mechanism to reduce wear and reduce the size of an assembled engine. The cam follower mechanism utilizes guide rails located to reduce side thrust on the valve stem. The engine employs a high speed quill shaft to synchronize independent cam shafts existing in each of a plurality of interconnected engines. The engine is assembled using a single size fastener to provide a uniform stress gradient within the engine. The engines are interconnected utilizing O-ring seals. The engine provides a piston crown utilizing a connecting rod directly connected to the bottom surface of the piston crown. The piston crown is stabilized along the longitudinal cylinder axis by a rail guide. Connecting rods are provided which require less than one hundred eighty degrees (180.degree.) circumference of a crankshaft pin for support so that a plurality of connecting rods can be associated with a single crankshaft pin.

Abstract: Method of making seat inserts by thermally spraying bulk material. The method includes the steps of: (i) preparing a mandrel having an outside dimension not greater than the desired inside dimension of the desired insert, the mandrel having a part to provide for separation of the sprayed bulk material from the mandrel, (ii) thermal spraying separate particles of one or more types of steel or nickel alloys in the presence of a controlled oxidizing medium to form a bulk composite material on the mandrel with a density of at least 99% and, (iii) after cooling the bulk material, removing such material from the mandrel and slicing it into discrete seat shapes for implanting into the final product.

Abstract: A method for forming an enlarged diameter aluminum alloy driveshaft tube having an interior reduced diameter portion that avoids clearance issues with respect to other components of the vehicle includes the initial step of providing a tube of aluminum alloy material having a diameter that corresponds to the enlarged diameter of the driveshaft tube to be formed. Then, a determination is made as to whether any component of the vehicle is located sufficiently close to the driveshaft tube to interfere with the rotation thereof during normal operation. If so, the position and axial length of the potential interference is located on the aluminum alloy tube. A diameter reducing process is then performed on the aluminum alloy tube to form the interior reduced diameter portion to eliminate the potential interference.

Abstract: A butterfly damper for installation in duct work through which air and/or gases will be flowing either under a positive or negative pressure has: an outer cylindrical surface structure made of a strong material; an inner cylindrical surface structure made of a resilient material; a circumferential portion of compressible material, which is always tending to return to the non-compressed form thereof, which is initially compressed between the outer cylindrical surface structure and the inner cylindrical surface structure, whereby the inside diameter of the duct body portion, initially, is uniform throughout the length thereof, and, thereafter, when the initial compressive force becomes less effective, the compressive material expands causing radially inward movement of adjacent circumferential portions of the inner cylindrical surface structure; a blade to be moved across the flow of air and/or gases into sealing contact with the radially inwardly moved circumferential portions of the inner cylindrical surface

Abstract: A cold forming process includes mechanically joining two strips of metal. The process entails two roll passes. The first pass lances and forms short locking areas through both strips of metal. The second pass compresses and flairs the metal at these areas to complete a mechanical interlock. This method can provide a row of closely spaced fastenings at high speed. It is applicable in improving the torsion strength of existing tee grid products. It is also applicable in creating more efficient rollformed shapes by providing a means to use more than one metal strip.

Abstract: An adjustable deflection roll including a roll sleeve or jacket supported by a plurality of support devices positioned partially within a support beam. Pressure chambers may be located between the support devices and the support beam and each pressure chamber may be coupled to a supply line. As the length of the roll increases, and as the need for increasingly more precise pressure distributions also increases, more support devices may be utilized. The adjustable deflection roll may also include a drain channel to facilitate quick relief of the pressure chambers when necessary. To accomplish this, each pressure chamber may be coupled to the drain channel furnished with the supply line such that the drain channel may be closed with a drain valve.

Abstract: An integral cast-iron connecting rod blank having a smaller-diameter end, a shank, and a larger-diameter end with a crank opening is set on an inclined base, and the tip end of a laser beam applying device is positioned in the larger-diameter end. While a YAG laser beam from the laser beam applying device is being applied to diametrically opposite inner central wall regions of the larger-diameter end, the laser beam applying device is moved to form notches transversely in the respective inner central wall regions. Two spreading elements are placed in the crank opening, and then a tapered wedge is inserted downwardly between the spreading elements. A downward impact point load is applied to a load bearing surface of the wedge thereby to apply spreading forces to the larger-diameter end. A crack starting radially outwardly from the notches is developed in the larger-diameter end, dividing the larger-diameter end into a saddle and a cap.

Abstract: A roll for use in the production of paper having a frame and a roll coating produced by thermal spraying. The coating is sealed by crystals formed out of a sealing-agent solution after the elimination of water therefrom. A coating for a roll for use in the production of paper produced by thermal spraying and having pores. In order to seal the coating, a sealing agent is crystallized in the pores in the coating.

Abstract: An apparatus is provided for removing the severed end-portions of boiler tubes installed and retained in a boiler header without consequential boiler header metal damage and in a manner whereby a compression gap of uniform width is machined throughout the length and thickness of each retained boiler tube end-portion selected for removal, the machined boiler tube end-portion is subsequently compressed to significantly close the machined compression gap and reduce the tube end cross-sectional circumference, and the compressed tube end is withdrawn longitudinally from engagement with the boiler header tube-mounting bore.

Abstract: A head gasket having a pair of armor assemblies with protective shim portions in the zones of adjacency of adjacent pairs of combustion openings. One armor's shim portions face one main surface of a main body of the gasket and the other armor's shim portions face the other main surface of the main body. The associated armors and the shims comprising the armor assemblies encapsulate the zone of adjacency and protect against degradation of that zone and enhance sealing thereat. A method of making the head gasket by applying the armor assemblies from opposite sides of the main body is also disclosed.

Abstract: A tappet made of Al alloy is used in a valve operating mechanism of an internal combustion engine of a vehicle. On the whole outer circumferential surface of the tappet, a helical projection and a helical groove are formed alternately to form an uneven surface. A plurality of uneven surfaces are formed on a ridge of the projection at regular intervals. The outer circumferential surface is coated with a wear resistant Fe film by thermal spraying. The uneven surfaces on the projection provide high adhesion strength of the film to the outer circumferential surface of the tappet to improve peel resistance, thereby increasing durability and reliability of the Al alloy tappet.

Abstract: In a method for processing a rotor used for a supercharger and the like, a slanted rolling machine is used having rolls designed such that the rolls are arranged about a pass line along which a material to be molded advances. Each roll is of corn shape and has a plurality of spiral-shaped grooves formed on its side surface. A shaft member made from iron or a similar material is inserted into an aluminum alloy tube. The aluminum alloy tube with the shaft member inside it is continuously fed to the slanted rolling machine along the pass line. Then, the periphery of the aluminum alloy tube is rolled/spread by the rolls for forming spiral shaped teeth from the tube material and for metallurgically attaching the tube to the shaft member.

Abstract: A method of joining two vehicle frame components made from dissimilar materials includes providing a first frame component, and providing a second frame component made from a material which is dissimilar to the material used to make the first frame component, where one of the first and second frame components is a metallic component made of a metallic material. A portion of one of the first and second frame components is positioned within a portion of the other of the frame components in an overlapping manner, thereby forming an overlapping portion. A metallic band is disposed around the overlapping portion, and an inductor is positioned around the metallic band. The inductor is energized to generate a magnetic field for collapsing the band about the overlapping portion at a velocity sufficient to magnetic pulse weld the band and metallic component to each other, thereby securing the first and second frame components together.

Abstract: A method of making a magnetic head which includes first and second pole tip layers separated by a nonmagnetic gap layer includes making the pole tips of a high magnetic moment material. The right side walls of the first and second pole tips are vertically aligned with each other. Similarly, the left side walls of the first and second pole tips are vertically aligned with one another. The side fringing flux from one pole tip to another is substantially reduced resulting in a magnetic head capable of writing data tracks with well defined boundaries. The possibility of the pole tips operating in magnetic saturation is reduced because the pole tips, formed of high magnetic moment material, is capable of accommodating high coercive force. The magnetic head can be fabricated as an inverted head or a non-inverted head capable of writing on magnetic media with high coercivity and at a high data transfer rate.

Abstract: An apparatus assembles a heat exchanger core having first and second side plates. The first and second side plates cooperate with first and second end plates to sandwich a plurality of layered tubes and fin plates therebetween. The apparatus includes a lifting mechanism for stacking the tubes and fin plates with respect to one another to define a layered stack having opposite sides and opposite ends. A side plate assembling mechanism associates the first and second side plates on opposite sides of the layered stack. An end plate assembling mechanism associates the first and second end plates on opposite ends of the layered stack.

Abstract: A method of manufacturing piston rings from a tube blank includes cutting a longitudinal slot in the tube blank, applying a force to the tube blank so that the slot is at least partially closed and the tube has a stressed shape, securing the stressed tube such taht the tube remains in the stressed shape upon removal of the force, laterally slicing the stressed tube to form a plurality of individual stressed shape piston rings, and releasing each of the individual stressed shape piston rings such that each of the piston rings returns to its unstressed shape.

Abstract: A roller assembly includes a rotating hollow roller and a non-rotatable crosshead longitudinally traversing the hollow roller. The hollow roller is supported by supporting elements acting against the inner circumference of the hollow roller. Each supporting element has a hydrostatic bearing pocket, whose extension in the longitudinal direction of the roller is at least three times that in its circumferential direction. This prevents the hollow roller from deforming and prevents edge pressure from being exerted on the web surrounding the bearing pocket.

Abstract: Apparatus and method for manufacturing an impeller consisting of a body with many vanes and a shroud joined with the body. The apparatus comprises a die for chucking the body, a horn for supporting the shroud to be in contact with the vanes while the body is chucked by the die, a torque motor for applying vibration to the horn, and a pneumatic cylinder for giving pressure to the torque motor so that the shroud and the body are pushed in a contacting direction with each other. The torque motor is driven by half-wave rectified alternating current, and generates twisting vibration of the frequency between 10 Hz and 1 kHz. The shroud and the body are firmly joined by the twisting vibration. Thus little burr is generated. Further, the present invention can be adopted for manufacturing the impeller elements of diverse materials.

Abstract: In order to produce a single headed piston for a swash plate compressor, the following steps are used. First, a shaped block of metal is cast, the block including a plurality of unfinished piston structures which are aligned and integrated, each unfinished piston structure including a head portion and a neck portion which are axially spaced. Then, the head portions of the piston structures are machined. Then, an outer surface of the cast block is entirely coated with a fluorocarbon resin. Then, the coated outer surfaces of the head portions are ground, and then, each neck portion is machined to form two spherical recesses which face each other, the two spherical recesses being used for slidably receiving shoes. Then, the cast block is cut to separate the piston structures from one another.

Abstract: A method of forming an engine airfoil part. The attributes of a final workpiece product are selected. An appropriate substrate composition is determined depending on the selected attributes. A workpiece substrate is formed to near-finished dimensions. An appropriate coating material composition is determined depending on the selected attributes. The workpiece substrate is prepared for a high-density coating process. The high-density coating process, such as HVOF thermal spray, is performed to coat the workpiece substrate with the coating material. The coating material is built-up to a thickness effective to obtain desired finished dimensions after performing a hot isostatic pressing treatment. The appropriate hot isostatic pressing treatment parameters are determined. The hot isostatic pressing treatment is performed on the coated workpiece substrate to obtain a metal product having the desired finished dimensions and diffusion bonding between the coating material and the workpiece substrate.