Abstract: A method for fabricating muntin grid pieces includes steps that attach a pair of material strips to opposed edges of the muntin bar element. The material strips may be provided in side-by-side strips that may be separated an simultaneously applied to the opposite sides of the muntin bar element. The connection between the material strips and the muntin bar element may be made with an adhesive or a mechanical connection. The method allows the material strips to be connected to the muntin grid pieces before the muntin grid pieces are assembled into a muntin bar grid for a window.

Abstract: A method for shaping an ABS of a magnetic head slider including a step of holding at least one row bar with a plurality of aligned thin-film magnetic head elements by adhering a first surface of the at least one row bar to an adhesive or UV tape capable of passing a laser beam there through, the first surface being opposite an ABS of the at least one row bar, a step of shaping the ABS of the at least one row bar in a convex shape by radiating a laser beam to the first surface of the at least one row bar through the adhesive or UV tape, a step of cutting the at least one row bar into individual magnetic head sliders, and a step of then, removing the magnetic head sliders from the adhesive or UV tape after weakening adhesion properties of the adhesive or UV tape.

Abstract: A method is provided for producing a matrix array ultrasonic transducer having an integrated interconnection assembly. A piezoelectric member, formed by a plurality of individual elemental transducers arranged in M×N matrix configuration, is provided and an interconnect interface device is joined to the rear face of the piezoelectric member. A plurality of printed circuits are then attached to the interconnect device so as to enable the resultant transducer array to be electrically connected to an external cable. The interconnect device is formed by an insulator member having dimensions in accordance with those of the piezoelectric member. A drilling operation is performed on the insulator member to form a corresponding array of through holes. The insulator member is then metallized and a resin used to provide filling of the through holes. Grooves are formed in at least one face of the insulator for receiving the printed circuits.

Abstract: A process for producing implants made of a bioresorbable metal, particularly magnesium alloys or zinc alloys, in which the material properties of the magnesium or the zinc are changed and the processing and utilization properties are improved by combining process steps for adjusting the properties of the material and subsequent machining. In this way it is possible to produce thin-walled tubular implants, particularly blood vessel support stents, from bioresorbable magnesium or zinc alloys, which are readily deformable without the risk of fracture during implantation.

Abstract: A process for manufacturing a composite polymeric circuit protection device in which a polymeric assembly is provided and is then subdivided into individual devices (2). The assembly is made by providing first and second laminates (7,8), each of which includes a laminar polymer element having at least one conductive surface, providing a pattern on at least one of the conductive surfaces on one laminate, securing the laminates in a stack (1) in a desired configuration, at least one conductive surface of at least one of the laminates forming an external conductive surface (3) of the stack, and making a plurality of electrical connections (31,51) between a conductive surface of the first laminate and a conductive surface of the second laminate. The laminar polymer elements may be PTC conductive polymer compositions, so that the individual devices made by the process exhibit PTC behavior. Additional electrical components may be attached directly to the surface of the device or assembly.

Abstract: A method of manufacture of a surface acoustic wave device which includes a step of applying a photosensitive film resist on a substrate and forming a photosensitive film resist layer over at least a portion of a surface of the substrate; a step of forming acoustic absorbers only at the two sides orthogonal to the direction of the surface acoustic wave transmission; a step of placing in a package a surface acoustic wave element obtained by cutting and dividing the substrate and electrically connecting a connection electrode of the surface acoustic wave element with an external terminal of the package; and a step of sealing an opening of the package with a lid, wherein the main surface of the acoustic absorbers is formed parallel to the surface of the substrate.

Abstract: A magnet for magnetic resonance imaging has an interior working space within the magnet frame sufficient to accommodate a physician and a patient. Because the physician is positioned inside the magnet frame, the physician has unimpeded access to the patient. Elements of the magnet frame desirably encompass a room, and the magnet frame may be concealed from view of a patient within the room. Preferred embodiments facilitate MRI imaged guided surgery and other procedures performed while the patient is being imaged, and minimize claustrophobia experienced by the patient. Also provided is a magnet having field coils disposed about the of pole portions of the magnet. A diagnostic facility for high volume MRI use is also disclosed.

Abstract: The invention relates to an electromechanical drive or a sensor element composed of piezoelectric elements arranged in the form of a stack. The drive or the sensor element is intended for measurement instruments and operates even at very high temperatures. The new drive or the new sensor element (10) for this purpose comprises a number of piezoelectric ceramic layers (12a-f), with electrode layers (16a-e) in each case being arranged between two mutually facing surfaces of directly adjacent piezoelectric ceramic layers. Connectors (18a,b) in the form of wires run in grooves (14a-d) in the electrode layers (16a-e) in order to make electrical contact with the electrode layers (16a-e), and are passed out of the electrode layers (16a-e).

Abstract: A gasket singulation apparatus for separating one gasket from a web-connected stack of gaskets includes a mandrel for receiving the web-connected stack and an arrangement of cylinders which are used to support the web-connected stack of gaskets and to pull one gasket away from the remainder of the web-connected stack so as to singulate that one gasket. A first plurality of cylinders are used to support the web-connected stack. A second plurality of cylinders are used to pierce any connecting material between the gasket to be singulated and the remainder of the stack. Once the web material is pierced, cylinder movement is effected so as to pull the selected gasket away from the stack, allowing any connecting material to sever and thereby singulate one gasket from the stack. Once the gasket is singulated, various insertion mechanisms are disclosed for inserting the singulated gasket into a pail lid groove.

Abstract: A method of manufacturing multiple dimension transducer arrays of multiple layer elements from modules is provided. A plurality of multiple layer strips are formed. The strips are separate, such as an elongated strip corresponding in size to one row of elements. Connections between the electrodes of various layers or separate connections from the various electrodes to a bottom of the strip are formed on the separate multiple layer strips. The separate strips are then aligned within a frame and bonded together. The resulting sheet of multiple layer transducer material is then diced to form elements. Due to the previous interconnection of electrodes, each element includes electrical connections for each of the layer electrodes, avoiding the need for vias or high aspect ratio sputtering.

Abstract: The present invention comprises a portable platform (10) for use in gasket manufacture, comprising a shaft connected to a motor and can receive at least one mandrel, and a surface to receive at least one molding tool, the mandrel being activated by the motor to turn in relation to the platform (10) and to the tool, and to move gasket-forming elements, such as metallic or non-metallic strips, among others, to be processed by the tool. Moreover, as much the mandrel as with the tool are replaceable respectively between mandrels and tools with different characteristics. Thus, the same platform (10) may produce different types of gaskets, and, consequently, speed up and facilitate the gasket replacement process.

Abstract: A method of producing a piezoelectric/electrostrictive (P/E) device includes the steps of providing a first substrate, securing metal plates to the first substrate to form a second substrate, and subjecting the second substrate to at least one cuffing treatment to form one of the movable section and the fixation section. The metal plates define the thin plate sections and one of the movable and fixation sections has mutually opposing end surfaces, a distance between which is not less than a length of the movable section.

Abstract: A duct assembly for transporting pressurized fluid therethrough. The assembly includes first and second duct sections. Each of the duct sections has sides extending between opposite ends. Each of the sides join an adjacent side and has a flange extending laterally outward from each end. The first and second sections are positioned in end-to-end relation so that the flanges extending outward from one of the ends of the first section face the flanges extending outward from one of the ends of the second section to define flange pairs. The assembly also includes a plurality of connector pairs. Each of the connector pairs are positioned at one of the ends of the duct sections. Each of the connector pairs includes a first connector spanning adjacent flanges of the first duct section and a second connector spanning adjacent flanges of the second duct section.

Abstract: A manufacturing method is provided for manufacturing a head material including: a plurality of rows of head-to-be sections to be thin-film magnetic heads; an inter-row cutting section provided to be a position at which adjacent ones of the rows are to be separated; and an intra-row cutting section provided to be a position at which adjacent ones of the head-to-be sections in each of the rows are to be separated. The method includes the steps of: providing a detection element to be used for detecting an amount of processing when specific processing is performed on the head material; an electrode for electrically connecting the detection element to an external device; and a conductor for electrically connecting the electrode to the detection element; and forming the electrode in the inter-row section.

Abstract: A working method of a bar block with a plurality of magnetic head elements and a plurality of pairs of electrode terminals electrically connected to the plurality of magnetic head elements arranged on an element-formed surface of the bar block in at least one line. This method includes a step of pre-laminating an ACF on the element-formed surface of the bar block, a step of bonding a conductive plate member with a plurality of projections located at positions faced to the plurality of pairs of terminal electrodes of the bar block, respectively, on the ACF so that each pair of the terminal electrodes is electrically short-circuited with each other, and a step of, then, working the bar block.

Abstract: A method of feeding a blank (31) by cutting a billet (11) for plastic working includes the steps of superimposing a plurality of annular members (15 to 18) having a coefficient of linear expansion smaller than that of the billet and an inside diameter slightly greater than the outside diameter of the billet on one another to assemble a tubular jig (12), inserting the billet into the assembled jig, heating the billet and the jig to a temperature at which the billet is half-molten, and cutting the billet into at least one blank by moving the annular members adjacent to one another in opposite directions. The cutting of the billet does not need a cutting tool, thus causing no wear of blades, and thereby allowing reduction in production cost. The billet can be cut into a plurality of pieces at a time, increasing productivity. Since the blanks can be fed together with the annular members, there is no need to reheat the blanks, providing increased productivity.

Abstract: A scattered ray removal grid that has an overall shape of constant spherical curvature. The scattered ray removal grid has radiation absorbing portions arrayed in a lattice configuration and radiation non-absorbing portions made of thermoplastic resin disposed between the radiation absorbing portions and can therefore be easily produced to have an overall spherical shape at low cost.

Abstract: A slider/suspension design and assembly method include securing a slider to a suspension assembly for use in a magnetic disk drive data recording device. To this end, a solder fillet bond is applied at the leading edge surface of the slider to provide a structural connection of the slider to the flexure, while also enabling the slider-suspension assembly to be separated without damage during the process. The slider/suspension assembly is initiated by forming a plurality of sliders on a wafer, in such a manner that the trailing edge surfaces of the sliders form the front side of the wafer, and the leading edge surfaces of the sliders form the backside of the wafer. A plurality of thin film data transducing elements and a plurality of electrical contact pads are then formed on the wafer front side.

Abstract: A method of forming a stabilizer bar is provided that includes the steps of roll forming sheet metal coil into a continuous tube. Next, a first portion of the continuous tube is flattened. The first portion of the continuous tube is sheared to define a first end. Next, a second portion of the continuous tube is flattened. The continuous tube is sheared at the second portion to define a final unit length with a second end opposite the first end. That is, the length is sheared from the rest of the continuous tube. The final length is the length is needed to form a single stabilizer bar. Finally, the final unit length is deformed into the desired stabilizer bar shape.

Abstract: According to the method, the transversal wire or rebar to be formed (1) and the longitudinal wires or rebars or other material of prismatic cross section (2), (3) are fed to the main forming and welding machine subsystem, in a stepwise manner, at the appropriate distance each time, through a driving mechanism (22-30). At this location, the transversal wire (1) is cut and then formed upon the action of a press (36). Welding of the formed transversal frame with one of the two longitudinal wires is performed while the formed transversal wire is still restrained by the action of the press (38) at the formation location. Welding with the second longitudinal wire is performed at the next production step, simultaneously with the welding of the next transversal frame with the first longitudinal wire, at the formation location. After the welding action, the transversal frame is released by the press and the forming tools (37-39), and the next production step is initiated.

Abstract: A method and apparatus for making a friction clutch plate includes cutting a supply of friction material into a plurality of individual shaped segments. The cut segments are moved in a first horizontal linear direction to a position adjacent a shuttle assembly. At least a first cut segment is engaged by the shuttle assembly which transfers the first cut segment in a second horizontal linear direction which is substantially perpendicular to the first horizontal linear direction. The first cut segment is deposited in a first indexing fixture. The remaining cut segments are sequentially moved in the first horizontal linear direction to the position adjacent the shuttle assembly. At least a second cut segment is engaged by the shuttle assembly and is transferred in a third horizontal linear direction which substantially perpendicular to the first horizontal linear direction.

Abstract: In a method of manufacturing a piezoelectric actuator there are provided a piece of piezoelectric material having piezoelectric bodies, a first piece of material having vibrational bodies, a second piece of material having movable bodies, and a third piece of material having pressurizing members. The first, second and third pieces of materials are superimposed over the piece of piezoelectric material to form a multilayered structure having piezoelectric actuators. The multilayered structure is cut to separate each of the piezoelectric actuators from one another.

Abstract: A method of providing complementary fastener strips for securing one item to another item is disclosed. A dispenser allows for complementary fastener strips in a prebound configuration, to be dispensed and used in applications such as the manufacture of outdoor furniture cushions. The invention facilitates the efficient and cost effective manufacture of articles which utilize multiple strips of complementary fastener strips.

Abstract: In a ceramic packaging method employing a flip-chip bonding, a gold bump is formed on a chip bond pad in a wafer and the wafer is divided into a plurality of chips by a die sawing. A Cu pattern and the gold bump are aligned on a ceramic package, thereby adhering a bottom chip to the ceramic package through the Cu pattern and the gold bump and a top chip is adhered to the bottom chip by using an adhesive, thereby forming a bottom/top chip structure of the bottom and top chip. The chip bond pad is electrically connected to the bottom chip and the top chip by interconnecting the bottom and the top chips and interconnected portions of the bottom and the top chips are encapsulated.

Abstract: The invention concerns a drip irrigation conduits (1) comprising a tube (2) designed to be connected to a pressurised water source. The tube is provided with two lateral lips (3a, 3b) superposed on each other and are formed integral with said tube. The conduit (1) further comprises, at intervals, flow cavities allowing water to trickle through (11) communicating the tube (2) inside with outside environment. The invention is characterised in that a strip (4) is fixed in sealed manner between the lips (3a, 3b), and the cavities.

Abstract: A manufacturing method for a ceramic oscillator capable of controlling the oscillation frequency with a high accuracy is disclosed. In this method, a mother substrate is polarized, electrodes in discrete ceramic oscillator units are formed, the mother substrate is cut into discrete ceramic oscillator units, an outer package is applied to each of the ceramic oscillators, and thus a ceramic oscillator as a finished product is achieved. Herein, the polarization processing for the mother substrate is executed by finishing the application of a high DC voltage, when the antiresonant frequency fa of the mother substrate in a thickness vibration mode is measured while the voltage is applied to the mother substrate, and the antiresonant frequency fa which is being measured has reached a target value of the antiresonant frequency of the mother substrate during polarization corresponding to a target oscillation frequency of the ceramic oscillator as a finished product.

Abstract: A piezo-electric printhead is formed from a first piezo-electric actuator disposed parallel to a second piezo-electric actuator. The first and second piezo-electric actuators have a shared inner electrode disposed between them, a first control electrode disposed on an outside surface of the first piezo-electric actuator and a second control electrode disposed on an outside surface of the second piezo-electric actuator. The actuators are formed from a block having a piezo-electric layer disposed on a ceramic base, in which the piezo-electric layer has two parallel, distinct electrode patterns embedded therein in the form of a metal paste.

Abstract: A method of producing a piezoelectric/electrostrictive device having a base including a pair of movable parts opposing each other, a fixing part that connects the movable parts with each other at one end thereof, and mounting parts that extend for a predetermined length while holding slit-shaped gaps of a predetermined width along inside surfaces of said movable parts by being turned around at the other end of said movable parts, said piezoelectric/electrostrictive device having a piezoelectric/electrostrictive element disposed on at least one outside surface of said movable parts of said base, wherein a base block obtained by laminating and calcining a large number of ceramic green sheets is adopted as a material for forming said base, and the base including said movable parts, said fixing part, and said mounting parts is formed by cutting said base block at a predetermined site along a lamination direction of said ceramic green sheets.

Abstract: Techniques for fabricating an inkjet printhead include providing a printhead substrate, fabricating a thinfilm structure on the substrate, forming a break trench in a surface region of the substrate in which a feed slot is to be formed, and subsequently abrasively machining the substrate through the break trench to form the feed slot. The break trench can be formed by an etch process, prior to applying a barrier layer to the thinfilm structure in a preferred embodiment.

Abstract: A method for cutting a wafer. The method includes the steps of: providing a first protection layer; providing a wafer, which comprises a top surface, a bottom surface mounted to the first protection layer, a plurality of semiconductor chips, and saw streets formed between adjacent semiconductor chips on the top surface of the wafer; providing a second protection layer to cover the top surface of the wafer so as to protect the top surface of the wafer; provide a cutter to cut the wafer into a plurality of individual semiconductor chips along the saw streets on the top surface of the wafer; and removing the first protection layer and second protection layer on each semiconductor chip. Thus, it is possible to prevent the waste chips generated during the cutting process from contaminating each semiconductor chip.

Abstract: A method of forming inner flanges in a bushing comprises steps of (a) extruding a bushing into an extruding die, (b) cutting an initial upward flange in the bushing, (c) shaping the initial upward flange into a final inner flange, and (d) repeating steps (a) to (c) to form additional inner flanges.

Abstract: The present invention provides an ultrasonic probe and method for making the same is provided which has an advantageous construction and method of assembly. The ultrasonic probe has a segmented ultrasonic transducer having a plurality of individual independent transducers, a plurality of piezoelectric transducers connected to a first end of a respective individual independent transducer; and a plurality of electrical connections electrically communicating each the piezoelectric transducer with a power source.

Abstract: A method for manufacturing an alloy wheel for automobiles, the alloy wheel including a rim part having a portion running in and out from a rim flange to a drop center, and a disc part fitted in the rim part is disclosed. The method comprising forging of an alloy billet to obtain a cup-shaped preform, flowforming of the preform to obtain a seamless tube, cutting of the seamless tube into unit tubes, primary roll forming of the unit tube to obtain a preliminarily shaped unit tube, secondary roll forming of the preliminarily shaped unit to obtain a final shaped rim part, and attaching a disc part to the rim part.

Abstract: A method for a parallel manufacturing of a plurality of piezoelectric actuators and a corresponding piezoelectric actuator utilize a plurality of thin foils composed of an unfired piezoelectric ceramic material which stacked one over another. On surface of foils, an electrode is provided for each actuator. For contacting electrodes, first and second connecting openings are provided. Electrodes have cut-outs which surround either first or second connecting openings. An electrically conductive paste is introduced into connecting openings. The stacked arrangement is fired and split up into the individual actuators. As internal electrodes, the electrodes are insulated from the surroundings.

Abstract: A method of manufacturing a piezoelectric/electrostrictive device includes the following steps. An integrated layered body is obtained by laminating at least one green sheet that is to be a thin plate, at least one green sheet having at least one rectangular-shaped hole portion, and at least one green sheet that is to be another thin plate. A piezoelectric/electrostrictive element is formed on a surface of the green sheets that form the thin plates by one of a thick film method or a thin film method. The layered body is cut in the laminating direction of the green sheets such that the rectangular-shaped hole portion is open on the side of the layered body after sintering the layered body.

Abstract: A method of obtaining a module including at least one inductive winding made up of one or more conductive tracks on a printed circuit film support on which the tracks form turns which are combined to form a winding or a plurality of parallel and/or coaxial windings.

Abstract: A method includes providing an apparatus that includes a scoring device for making transverse score lines on a roll of sheet material, a dimpler device or dimpler roller for making dimples adjacent the score lines at predetermined width locations, and a rollformer adapted to continuously form the sheet material into a tubular shape with channels. A welder is positioned in line with the rollformer and is adapted to weld the tubular shape into a permanent tube. A break off device positioned in line with the rollformer is adapted to break off sections of the tube at the score lines as the permanent tube exits the rollformer.

Abstract: A microphone assembly comprises a microphone, a connector secured to the underside of the microphone. A gasket has a sound collecting hole and is secured on the upper surface of the microphone.

Abstract: A gasket singulation apparatus for separating one gasket from a web-connected stack of gaskets includes a mandrel for receiving the web-connected stack and an arrangement of cylinders which are used to support the web-connected stack of gaskets and to pull one gasket away from the remainder of the web-connected stack so as to singulate that one gasket. A first plurality of cylinders are used to support the web-connected stack. A second plurality of cylinders are used to pierce any connecting material between the gasket to be singulated and the remainder of the stack. Once the web material is pierced, cylinder movement is effected so as to pull the selected gasket away from the stack, allowing any connecting material to sever and thereby singulate one gasket from the stack. Once the gasket is singulated, various insertion mechanisms are disclosed for inserting the singulated gasket into a pail lid groove.

Abstract: Manufacturing an inkjet printhead and orifice plate by providing upstanding spaced apart barrier walls on the orifice plate to separate adjacent firing chambers on the printhead. A plurality of orifice plates are initially created in a one-layer array on a workpiece. An abrasive member is controlled to contact and truncate end edge portions of the barrier walls on the workpiece to create mutually coplanar surfaces for engagement with a substrate in order to help prevent cross-talk between adjacent firing chambers.

Abstract: A presently-preferred method of manufacturing a stacked core for a magnetic-induction device comprises cutting a sheet of magnetic material into one or more strips of the magnetic material so that a width of each strip changes along a length of the strip. The presently-preferred method also comprises cutting the strips to form a plurality of laminae having different widths. The presently-preferred method further comprises stacking and bonding the laminae to form a winding leg, an outer leg, or a yoke having laminae of relatively large width positioned at its approximate center, laminae of relatively small width positioned at its outer edges, and laminae of progressively decreasing width positioned between the center and the edges.

Abstract: A manufacturing process of a joint (20) for connecting a leg (23) to a table surface or similar element, said joint (20) being of the type comprising: an expandable body, or expander (16) which can be inserted in the complementary hollow top of said leg (23), at least one expansion grub screw (21) which is screwed into a relative threaded nut (22) fitted into a housing (12) of said expander (16), said grub screw (21) being maneuverable from the outside of the leg (23), and anchoring devices (19) joined to the expander (16) for attaching the surface thereto, is characterized in that said expander (16) and said anchoring devices (19) are produced as two separate components which are subsequently firmly joined together, for example by means of welding.

Abstract: A jewelry article includes an elongated support and a multiplicity of ornaments strung along the support, at least one of which constitutes an adjustable self-stopping bead. Each self-stopping bead has a rigid shell with a pair of holes sized to slidably receive the support. A flexible resilient tube is positioned inside the shell in alignment with the holes that tube having a length that is as great as or slightly greater than the spacing of the holes, an outside diameter that is slightly larger than the diameter of the holes and in inside diameter that is slightly smaller than the maximum cross-sectional dimension of the support so that the tube resiliently engages the support to adjustably fix the position of the self-stopping bead along the support. A method of making the self-stopping bead is also disclosed.

Abstract: Magnetic heads capable of recording and reading with high sensitivity and resolution are provided by minimizing the outflow of magnetic fluxes from a flux guide to magnetic shields while using a flux guide structure for an MR element. In the magnetic head, magnetic shields exposed on a surface opposite a magnetic recording medium (air bearing surface) and a flux guide exposed between the magnetic heads via a non-magnetic layer are provided, and magnetic heads via a non-magnetic layer are provided, and magnetic fluxes are guided by the flux guide to a magnetoresistive (MR) element formed in a position not exposed on the air bearing surface. The height of the magnetic shields in a direction perpendicular to the air bearing surface is less than the distance from the air bearing surface to the MR element, and the lengthwise direction of the magnetic shields is in parallel to the air bearing surface in the vicinity of the position in which the flux guide is formed.

Abstract: A method for forming a shelf is presented herein and includes shearing a straightened metal coil with a shearing mechanism and forming a sheared portion having a first length. The sheared portion has a first width and opposing ends that define a shelf width. The shearing mechanism is incorporated into a punch. The sheared portion is fed into a rollform mill set to receive sheared portions having the first width. The sheared portion is formed to have a predetermined depth. The sheared portion is fed into a press brake and at least one of the opposing ends of the sheared portion is bent with the press brake. The sheared portion is then ejected from the press brake.

Abstract: An apparatus for making notched muntin bars. The apparatus includes an uncoiler or support for a supply of ribbon stock, a notching device, a roll forming machine and a severing device. The ribbon stock has a surface with first and second finishes. The notching device receives ribbon stock from the supply of ribbon stock. The notching device includes a punch that is moveable from a first position to a second position. In the first position the punch is activated to remove sections of material having the first finish. In the second position the punch is activated to remove sections of material having the second finish. The roll forming machine receives the ribbon stock from the notching device to form hollow muntin bar stock that has a first side with the first finish and a second side with the second finish. The formed muntin bar stock has notches in the first side having the first finish and notches in the second side having the second finish.

Abstract: A back plate having a stationary back electrode is secured to a substrate. A diaphragm electrode is mounted on the back plate interposing a spacer. A frame having a sound collecting hole is mounted on the diaphragm electrode.

Abstract: The present invention provides a process for forming a contact member cable. The cable is a longer version of a contact member and can then be cut into shorter, individual contact members, to meet the particular requirements for a specific connector application. The contact members can be used as the conductive elements for a family of land grid array connectors that provide, among other things, a low profile, uniform electrical and mechanical performance, and reworkability if a contact member is damaged. The connectors are intended to interconnect electrical circuit members such as printed circuit boards, circuit modules, or the like. Such circuit members may be used in information handling system (computer) or telecommunications environments.

Abstract: A hydrodynamic shaft seal formed with a spiral hydrodynamic channel in which successive turns of the channel are of progressively diminishing volume toward an air side of the seal. The channel is made by forming a spirally extending first cut in a surface of the seal, and forming a spirally extending second cut in the surface of the seal adjacent to the first cut such that the first and second cuts intersect below the surface of the seal to produce a spiral channel. The spiral of the first cut has a lead different from the lead of the second cut such that the channel is of progressively diminishing volume along its length. Alternatively, the second cut may have the same lead as the first cut for the first few turns, after which the lead of the second cut may be reduced, to provide a channel of constant volume for the first few turns, followed by a channel portion of reduced volume.

Abstract: PZT crystals are peripherally coated in manufacture by cutting a series of intersecting first kerfs in a wafer comprising a plurality of PZT crystal precursors, filling the kerfs with a coating resin, and cutting a second, narrower kerf in the locus of the first kerfs to separate the crystals while providing them a peripheral coating of the coating resin.