Abstract: An electric arc welding system and method for creating a first AC welding arc with a first current waveform between a first electrode and a workpiece by a first power supply and a second AC welding arc with a second current waveform between a second electrode and a workpiece by a second power supply as the first and second electrodes are moved in unison along a welding path where the first and second power supply each comprising an high speed switching inverter creating its waveform by a number of current pulses occurring at a frequency of at least 18 kHz with the magnitude of each current pulse controlled by a wave shaper and the polarity of the waveforms controlled by a signal. The first and second AC waveforms each have a positive portion and a negative portion and a cycle period of about 10–20 ms and timing circuits for determining the push and pull times between the arcs and a waveform adjusting circuit to limit the push and pull times to less than about 5.0 ms.

Abstract: Electric arc welder (10) performs a given weld process with selected current waveform performed between electrode (24) and workpiece (26). Welder (10) includes a controller with a digital processor (30), sensor (44) for reading instantaneous weld current, and circuit (56) to convert the instantaneous current into a digital representation of the level of instantaneous weld current. Digital processor (30) has program circuit (64, 66) to periodically read and square the digital representation at a given rate, register (70, 72) for summing a number N of square digital representations to give a summed value, and an algorithm (82, 84, 86, 88) for periodically dividing the summed value by the number N to provide a quotient and then taking the square root of said quotient to thereby digitally construct rms signal (40) representing the root mean square of the weld current.

Abstract: A side channel pump, preferably a vacuum pump, includes a driven rotor (16) and a fixed stator (14). The rotor (16) and the stator (14) define a pump channel circulating in a peripheral direction. Blades are fixed onto the rotor, protruding into the cross-section of the pump channel. The pump channel also includes a blade-free side channel (44). The pump channel (22) containing the side channel (44) extends in a helical manner around the rotor (16). The pump channel is advantageously not limited to the length of a winding but can have the length of substantially any number of uninterrupted windings. As a result, a high suction performance and a high compression ratio in the pump can be obtained.

Abstract: A method and structure for a virtual finishing job ticket database used in a finishing system wherein the database stores capability and constraint information relating to finishing devices available for a finishing job, receives information describing the finishing operations to be performed, and stores the information in a manner accessible for management of the finishing job.

Abstract: A container for a manually operable oil dispenser for use with metal working machines comprises a bucket providing a reservoir for oil to be dispensed and a pan in the bucket for catching oil and chips dropping thereinto and for returning the oil to the bucket. The bucket has a bottom, a sidewall and an annular upper end, and the pan has an apertured bottom spaced above the bottom of the bucket, a sidewall inwardly of the sidewall of the bucket and an upper end overlying and slidable circumferentially relative to the upper end of the bucket. The bucket and pan have locking members interengaging during relative sliding displacement therebetween to releasably interengage the bucket and pan against separation. The bottom and sidewall of the bucket are contoured to minimize the volume of oil necessary in the reservoir area for continual operation of the dispenser, and the bucket is provided with a bulkhead fitting for attachment to a dispensing pump hose at an angle of 45° to horizontal.

Abstract: A phosphor having the formula Na2(Ln1-y-zCeyTbz)2B2O7, wherein Ln is selected from the group consisting of La, Y, Gd, Lu, Sc and combinations thereof and wherein y=0.01-0.3 and z=0.0-0.3. The phosphor is suitable for use in a white-light emitting device including a UV/blue semiconductor light source having a peak emission from about 250 to about 550 nm and a phosphor blend including a blue emitting phosphor, a red emitting phosphor and a green emitting phosphor having the above described formula.

Abstract: In a light emitting package fabrication process, a plurality of light emitting chips (10) are attached on a sub-mount wafer (14). The attached light emitting chips (10) are encapsulated. Fracture-initiating trenches (30, 32) are laser cut into the sub-mount wafer (14) between the attached light emitting chips (10) using a laser. The sub-mount wafer (14) is fractured along the fracture initiating trenches (30, 32).

Abstract: A document management system is provided which organizes, stores and retrieves documents according to properties attached to the documents. Applications which function based on hierarchical path names communicate to the document management system through a translator. A tag is inserted into the path of a document to identify the document and represent a dynamic collection. The same tag is inserted into the path of files which support the document so that the supporting files are related to the document by the path tag. In this manner, the document management system identifies and locates all documents which are related to each other based on the tag. Thus, an application is provided with all related files even though the application may not know where the files are actually stored or retrieved from.

Abstract: A method and system validates an output used in calibrating a document processing system (DPS). The calibration target is generated for assessing the range of outputs of the DPS. The target comprises a plurality of target elements and element orientation information representing a physical layout of the target elements in a DPS output. The DPS output is generated in accordance with the calibration target. The characteristic values of the DPS output are measured corresponding to the individual target elements. If a mis-ordering of the measurements of the target elements is identified, the measurements of the target element of the DPS are reordered in accordance with the desired order for computing an appropriate calibration function without requirement of re-measurement.

Abstract: A micro-electromechanical dimensioned bimorph structure includes a first element layer structure, and a second element layer structure. The element layer structures are provided in various combinations, including piezoelectric/piezoelectric, antiferroelectric/antiferroelectric or antiferroelectric/piezoelectric. The layer thickness of the element structure is less than 100 ?m. A bonding layer bonds the first element structure directly to the second element structure, and the bonding layer thickness is less than 10 ?m. The bimorph structure can be made in various forms including a cantilever or a diaphragm. Microfluidic devices using the bimorph structures may also be constructed.

Abstract: A multi-electrode piezoelectric diaphragm structure includes a diaphragm, piezoelectric material located on the diaphragm, which is defined as having a first area, and a second area. The first area of the piezoelectric is poled in a first direction, and the second area of the piezoelectric is poled in a second direction. The poled first direction is in a Z-axis of the piezoelectric and the poled second direction is in a Radial axis of the piezoelectric. A first electrode is positioned in the first area, on the first surface, of the piezoelectric. A second electrode is positioned in the second area, on the first surface, of the piezoelectric. A third electrode is located on a second surface of the piezoelectric.

Abstract: A high-pressure, inert gas cushion assembly for the ram or bolster of a metal stamping press includes a manifold having fluid-flow passages defined therein, along with a plurality of cylinder mounting locations each in communication with at least one of the fluid-flow passages. A plurality of cushion cylinders are located respectively in the cylinder mounting locations. Each cylinder includes a body having an inner wall that defines a bore of diameter D. A piston is located in the bore and includes opposite inner and outer faces, wherein the outer face is oriented outwardly relative to the bore and manifold. A fluid seal is supported on the piston and is slidably engaged with the wall defining the bore. One or more bearings are supported on the piston and slidably engaged with the inner wall that defines the bore. The bearing(s) support the piston slidably in the bore for reciprocal sliding movement between extended and retracted positions.

Abstract: A light emitting diode (LED) assembly including an LED, an optically transmissive cover and a base for supporting the LED. The optically transmissive cover encapsulates the LED and includes a stiffener for reinforcing a base portion of the cover. The base includes electrical leads extending therefrom that are electrically connected to the LED. To make the cover, at least one support frame is formed in a strip of substantially rigid material. The at least one support frame is connected to a processing portion of the strip. At least one lens is overmolded on the at least one support frame that is connected to the processing portion. The overmolded support frame is removed from the processing portion of the strip.

Abstract: In a chip package (10, 10?, 110, 210), first and second electrical power buses (14, 14?, 16, 16?, 114, 116, 214, 216) are each formed of an electrical conductor having a chip bonding portion (20, 22, 120, 122, 220, 222) and a lead portion (26, 26?, 28, 28?, 126, 128, 226, 228) extending away from the chip bonding portion. The chip bonding portions of the first and second electrical power buses have edges (32, 34, 132, 134, 232, 234) spaced apart from one another to define an extended electrical isolation gap (40, 140, 240). A plurality of chips (42, 44, 46, 142, 143, 144, 145, 146, 147, 148, 242) straddle the extended electrical isolation gap and are electrically connected with the first and second electrical power buses to receive electrical power from the first and second electrical power buses.

Abstract: This invention relates to a color calibration alarm apparatus and method for use in an image-rendering device. The alarm apparatus, and associated method, make use of a sensor device that compares printed or measured color values with expected or ideal color values. With the measured values differ sufficiently from the ideal color values, the alarm apparatus signals to the user that a calibration should be performed. The printed or measured color values are obtained from a test patch that is printed, preferably, on a break page between print jobs. The alarm device is placed at the output tray of an image rendering device in one embodiment that may also be a separate stand alone hand-held unit in other embodiments where it is manually used.

Abstract: The piezo-composite curved actuator of the present invention includes a piezoelectric layer 10, a lightweight fiber-reinforced lower composite layer 20 with a high GTE (coefficient of thermal expansion) and a low modulus, which is placed under the piezoelectric layer, a lightweight fiber-reinforced upper composite layer 30 with a low GTE and a high modulus, which is placed on the piezoelectric layer, and an insulator layer 23 placed between the piezoelectric layer and the upper composite layer. The piezo-composite curved actuator may further include an insulator layer 24 placed on the upper composite layer. Also, the piezo-composite curved actuator may further include insulator layers 22 placed between the insulator layer 23 and the lower composite layer 20 at the both sides of the piezoelectric layer 10.

Abstract: A rear pillar structure of a vehicle frame is provided for supporting a dual mode tailgate including a pillar member having a first leg and a second leg. The first leg extends generally vertically along a side wall of the vehicle frame which partially defines a load carrying bed. The second leg extends along a cross member connecting a pair of frame rails of the vehicle frame. A support member is mounted inside the first leg for reinforcing the first leg at a location at which the dual mode tailgate connects to the pillar.

Abstract: A movable fall-preventing device (1) for a belay support (6) includes an axis-retaining groove which retains the belay support (6) by means of a lever (16) that pivots between an open position and a closed position. One end of the lever comprises a locking cam and the other end is provided with a hole intended to receive a snap hook (5). An end stop system limits the pivoting movement of the lever (16) in an intermediary position when switching from the closed position to the open position. The end stop system comprises a retractable, movable stop (50).