Abstract: A fluid shear coupling apparatus is disclosed herein which includes a driving member comprising a rotor mounted to a shaft and defining several annular ridges and grooves. The apparatus further includes a driven member including a bearing housing mounted to the shaft, a cover secured about a perimetric flange with the bearing housing, and a plate secured to the cover and defining several annualr ridges and grooves positioned complementary with the ridges and grooves of the rotor. In the preferred embodiment, the plate, cover, bearing housing and rotor are as-formed structures.

Abstract: A method of fabricating a rotor hub of a fully articulated helicoper rotor system, the rotor hub including a central portion and at least two pairs of lug arms extending therefrom, according to which composite material is dispensed onto the mandrel and wound about a pair of lug arms and an associated part of the central portion of the mandrel to form a continuous closed loop of the composite material to a desired width and thickness. The winding is repeated for each pair of lug arms and its associated part of the central portion of the mandrel so that as many loops of composite material are formed as there are lug pairs. The finally assembled loops are cured to structuralize the loops.

Abstract: A plain bearing comprises a metal cylinder as an external member and a resinous cylinder as an internal member, in which the outer surface of the resinous cylinder is firmly engaged and bitten with a concavo-convex portion formed on the inner surface of the metal cylinder. A process for manufacturing the plain bearing comprises producing the metal cylinder, forming the concavo-convex portion on the inner surface of the metal cylinder, combining the concavo-convex portion of the metal cylinder with the resinous cylinder, inserting a core pin into the interior of a combined cylinder of the metal cylinder and the resinous cylinder, squeezing the combined cylinder through a draw die and producing a finished plain bearing.

Abstract: A jacking crane supported by four telescoping hydraulically powered legs is used to erect a two spaced apart parallel column drilling derrick. Each column is composed of a number of identical column sections which are assembled on site using the jacking crane which is supported in the space between the columns. The two parallel columns are erected by the jacking crane lifting sections one on top of the other. As soon as these newly added sections are secured to the previous sections, the legs of the jack which are supported from column sections are actuated to move the platform of the jack upwardly where it is attached to an upper portion of the partially completed columns and the legs are then released and then raised to a higher point where they are again attached. The crane lifts additional sections and is "walked-up" by stages between the two partially completed columns until the columns reach the desired height.

Abstract: A T-fitting is formed from two precut lengths of tubing of the same, relatively small, inner and outer diameter. One length of tubing is formed with a reduced diameter neck section at one end whose outer diameter is approximately equal to its normal undeformed inner diameter. The second length of tubing is placed in a clamp which is advanced to successive work stations where a sidewall is punched and then drilled through to form a radial hole in one side of a diameter substantially equal to the inner diameter of the tubing. At a subsequent work station, the neck section of the first length of tubing is driven into a force fit into the drilled hole in second length of tubing. The assembled tubing is then removed from the clamp, brazed into a permanent T-tube assembly. The portion of the neck section which projects into the passage of the second length of tubing is then trimmed off by a drilling or reaming operation.

Abstract: The present invention provides a method and apparatus for attaching a ring-like part to the outer periphery of a columnar material, as, for example, in the assembling of a catalytic converter. The columnar material is positioned and supported with its axis oriented horizontally. A guide member is supported from the side to position it adjacent to the columnar material on the same axis as the columnar material. The guide member has an outer inclined surface enlarged towards the columnar material. The guide member is then supported in the axial direction and at the same time, has the side support thereof released. The ring-like part is then pushed while guiding it on the outer inclined surface of the guide member to fit it over a portion of the columnar material. The pushing of the ring-like part is released and then the guide member is again supported from the sides, while at the same time, the support thereof from the axial direction is released.

Abstract: A method of producing a plate-shaped bearing member for sliding bearings, the structure being composed of a patterned body of supporting bearing material and a lubricant, utilizing a galvanoplastic fabrication step, the method including: producing a mold provided with a pattern of recesses, the step of producing including performing an X-ray deep-etch lithography procedure; filling the recesses to form the body of bearing material; removing the mold from the body of bearing material so that spaces are left in the bearing material; and filling the thus produced spaces with the lubricant.

Abstract: A tool for installing nutplates to a structural part. The tool is portable or useable with a robot. The tool includes a supply of nutplates and a rivet feeding and insertion mechanism. The rivets are inserted in the structural part, followed by the positioning of a nutplate into engagement with the rivets and finally by clamping of the rivets to retain the nutplate in assembly with the clamped rivets.

Abstract: A cast metallic fixture for workpieces including twin turbine blades has two spaced-apart walls which surround portions of the exterior of a workpiece and several webs which connect the walls to each other. The fixture is made in a casting mold which has one or more inserts extending into the interior of a workpiece which is placed into the cavity of the mold preparatory to pouring of a molten alloy which is then caused to harden and to thus form the fixture. When the fixture has served its purpose of holding the workpiece in a grinding machine, it is broken up by subjecting its walls to bending and tensional stresses to destroy the webs, whereupon the walls are moved apart to afford access to the workpiece. The webs can be destroyed by melting simultaneously with or in lieu of the application of mechanical stresses to the walls of the fixture.

Abstract: A method for positionally stabilizing one end of a bracelet while the bracelet is being secured about the wrist includes a recessed receiver, a positive engagement clamp and a base portion with a flat stabilization surface. The receiver is in the form of a plate which is recessed to snugly receive the user's wrist. One end of the bracelet is forcefully engaged by the clamp at a location proximate the recess to prevent any movement of the clamped end of the bracelet while the two braclet ends are being engaged about the wrist. Positional stabilization of the overall device is provided by the flat stabilization surface which may be placed on a surface of an external support.

Abstract: A valve-seat insert for internal combustion engines comprises a double-layered, sintered alloy composed of a valve-seat layer on which a valve is seated, and a base layer integrated with the valve-seat layer and adapted to be seated in a cylinder head of an engine. The valve-seat layer is composed of a sintered alloy of a high heat resistance and a high wear resistance having a composition comprising, by weight, 4 to 8% Co, 0.6 to 1.5% Cr, 4 to 8% Mo, 1 to 3% Ni, 0.3 to 1.5% C, 0.2 to 0.6% Ca, and the balance of Fe and inevitable impurities, the additives, Co, Cr and Mo being present mainly in a form of a Co-Cr-Mo hard alloy and a hard Fe-Mo alloy dispersed in the Fe matrix. The base layer is composed of a sintered alloy of a higher heat resistance and a higher creep resistance than those of the valve-seat layer and having a composition comprising, by weight, 11 to 15% Cr, 0.4 to 2.0% Mo, 0.05 to 0.3% C, and the balance of Fe and inevitable impurities.

Abstract: An applicator device constitutes a magazine for the articles to be applied using the device. It comprises an elongate body adapted to hold and guide the articles. A longitudinal hollow space inside the body open at each end is adapted to receive the articles. There is a hood member at the open end of the body through which the articles leave the body. The device may be used for applying cable markers to a cable or electrical conductor, for example.

Abstract: The jacket blanks punched out from a film web are folded to give jackets and then closed by spot welding with the aid of a wavy resistance belt, the welding temperature being produced for a short time by means of a current pulse in the resistance belt.

Abstract: A circular groove present on a journal on its end is utilized to provide a bayonet coupling on the journal without mechanical refinishing work to fix or clamp a ring piece axially on the journal. The clamped supporting elements of the bayonet coupling are formed as a divided supporting ring whose collar engages in the circular groove and is rigidly nonrotatably held in it. The circumferentially divided supporting surfaces of the supporting ring are assembled by attaching members correspond in the locked configuration with the interiorly directed circumferentially divided abutting surfaces of the clamped ring piece which form the rotatable portion of the bayonet coupling.

Abstract: The piston boot is first set at the middle portion of a cylinder jig having a small diameter upper step portion and a large diameter lower step portion with the middle portion position therebetween and having radial air blow off vents. The upper step portion is then inserted into an inner circumferential face of a piston while simultaneously advancing the lower step portion toward an end face of the piston from which the inner circumferential face extends and blowing air from the blow off vents, as a result of which the piston boot is radially expanded and fitted on an outer circumference of the piston adjacent the end face. A cup form jig slidably fitted around the lower step portion is then advanced toward the piston boot and further advances the piston boot until the piston boot is fitted into a piston boot fitting portion of the piston.

Abstract: A structural mounting for a heavy machinery with rotating parts being supported between a foundation surface and the heavy machinery is disclosed which includes an impermeable foundation surface supporting spaced apart columns of epoxy or similar grouting material with epoxy or similar grouting material chocks extending from the plurality of columns to the support frame of the heavy machinery or engine which provide a non-adherent support between the columns and the engine mounting frame. The columns surround but do not adhere to anchor bolts secured in the foundation. The epoxy chocks likewise do not adhere to the anchor bolts. The anchor bolts are protected with a shroud or wrapping of suitable material whereby post tensioning of the anchor bolts will not cause the columns or chocks to crack or fracture. Leveling screws threadedly engaged through the mounting flange of the machine may or may not extend through the chocks and seat upon leveling plates. The columns and chocks are formed in situ.

Abstract: Method for manufacturing a electrohydraulic valve, a solenoid operated valve assembly, formed of a ferromagnetic end stop section and body section, an orifice section and a sleeve section of low magnetically permeable material. The sleeve section has an inner chamber with a centrally disposed portion of reduced diameter. Each of the sections is completely finished before assembly so that no further finishing operations are required. Predetermined sections are selected and a valve assembly is assembled by threading one end of the sleeve section to the end stop section and the other end to the body section. The orifice section is threaded to the body section to form a completed valve assembly.

Abstract: A duct heater includes end brackets by frame bars. The end brackets are formed into a geometric shape whereby only corners of the bracket engage an inner suface of the duct. Assembly is facilitated by providing the end bracket as thin, flat strips having narrower and wider sections. The frame bars are attached to the wider sections, and when the strips are bent to form a closed geometric form, the thinner sections are curved to form duct-engaging corners while the wider sections remain substantially straight. Insulating supports are attached to the frame bars, and a heater coil is attached to the insulating supports. The structure may be easily slid into a duct because only the corners of the end brackets contact the duct. Thus, a method for forming the heater brackets and attaching heater elements is set forth.

Abstract: A scroll-type apparatus having an improved radial seal and a method for the assembly thereof is disclosed. The spiral wrap of a moving scroll and a stationary scroll are provided with gap adjusting means for providing a gap of a desired size between the top surface of the spiral wrap of each scroll and the top surface of the base plate of the opposing scroll. The gap adjustment means comprises a spiral-shaped elastic element which fits into a groove formed in the top surface of a spiral wrap or on top of a protrusion formed on the top surface of the spiral wrap, to form a nonpressurized seal. The elastic element is supported by the spiral wrap by friction, bonding, or solvent welding.

Abstract: A window frame assembly for curved windows comprises a rigid frame member having a curved profile, a flexible frame member, and a plurality of individual window frame core blocks. The blocks are secured serially to the flexible frame member. The blocks and flexible frame member form a subassembly which is secured to the rigid frame member such that the subassembly assumes the curved profile of the rigid frame member. The blocks are preferably wood, the rigid frame member preferably an aluminum clad frame cover, and the assembly preferably provides an aluminum clad, wood core window frame assembly.