Patents Issued in July 31, 2008
  • Publication number: 20080179959
    Abstract: A method of operating a power system is provided. The power system may have a plurality of generator sets and a power line. The method may include commanding a plurality of the generator sets that are disconnected from the power line to start generating electricity. The method may also include supplying to a control device acting as a coordinating control unit information about the operating state of each of the plurality of generator sets commanded to start generating electricity. Additionally, the method may include determining with the coordinating control unit which of the plurality of generator sets has become ready to supply electricity to the power line first. The method may also include initiating supply of electricity to the power line by first connecting to the power line the generator set that the coordinating control unit has determined to be the first ready to supply electricity.
    Type: Application
    Filed: January 29, 2007
    Publication date: July 31, 2008
    Inventors: Keith Ronald Folken, Michael Allen Dvorsky, Julie Lynn Boley, James Dean McBurney, Andrew William Black, David Lee Zwetz, Stephen Charles Nofsinger
  • Publication number: 20080179960
    Abstract: Systems and methods of converting alternating current (AC) power into direct current (DC) power at an intermediate DC voltage are disclosed. Briefly described, one system embodiment comprises a separated front end rectifier system that provides intermediate voltage, direct current (DC) power to a plurality of loads, comprising a modular alternating current to direct current (AC/DC) rectifier coupled to an AC power system that converts received AC power to DC power at a rectified DC voltage, a rectified DC voltage bus coupled to the AC/DC rectifier and at least one modular direct current to direct current (DC/DC) conversion unit coupled to the rectified DC voltage bus and to an intermediate DC voltage bus.
    Type: Application
    Filed: January 26, 2007
    Publication date: July 31, 2008
    Applicant: Hewlett-Packard
    Inventors: Steve Belson, Eric Peterson, Robert Guenther
  • Publication number: 20080179961
    Abstract: In an electrical power supply having a plurality of switching power converter circuits and configured to supply a voltage to an electrical load, a method of controlling a duty cycle of at least one switch of one of the plurality of switching power converter circuits includes determining a storage voltage produced by the one of the plurality of energy storage devices. The method further includes determining an average storage voltage corresponding to an average of storage voltages produced by each of the plurality of energy storage devices. The method further includes determining at least one control signal as a function of the storage voltage, the average storage voltage, and a reference voltage. The method further includes controlling the duty cycle of the at least one switch of the one of the plurality of switching power converter circuits based upon the at least one control signal.
    Type: Application
    Filed: January 26, 2007
    Publication date: July 31, 2008
    Inventors: Jonathan W. Kimball, Philip T. Krein, Nicholas D. Benavides
  • Publication number: 20080179962
    Abstract: A leak detector pad comprising a circuit board having a bottom surface and a top surface, spaced first and second electrically conductive traces located on the bottom surface, and an electronic circuit mounted on the top surface. The circuit includes a first segment adapted to create an alternating current (AC) voltage waveform, a second segment adapted to apply the AC voltage waveform between the traces on the bottom surface of the circuit board, a third segment adapted to create a measure of a capacitance between the traces based upon an AC current flowing between the traces as a result of the AC voltage waveform, and a fourth segment adapted to create a direct current (DC) voltage alarm signal if the measure of capacitance provided by the third segment indicates the presence of fluid.
    Type: Application
    Filed: January 11, 2008
    Publication date: July 31, 2008
    Applicant: Watts Water Technologies, Inc.
    Inventor: Jonathan R. Wood
  • Publication number: 20080179963
    Abstract: Disclosed herein are various embodiments of coil transducers and galvanic isolators configured to provide high voltage isolation and high voltage breakdown performance characteristics in small packages. A coil transducer is provided across which data or power signals may be transmitted and received by primary and secondary coils disposed on opposing sides thereof without high voltage breakdowns occurring therebetween. At least portions of the coil transducer are formed of an electrically insulating, non-metallic, non-semiconductor, low dielectric loss material. Circuits are disclosed herein that permit high speed data signals to be transmitted through the coil transducer and faithfully and accurately reconstructed on the opposing side thereof. The coil transducer may be formed in a small package using, by way of example, printed circuit board, CMOS and other fabrication and packaging processes.
    Type: Application
    Filed: March 31, 2008
    Publication date: July 31, 2008
    Applicant: Avago Technologies ECBU (Singapore) Pte. Ltd.
    Inventors: Julie E. Fouquet, Gary R. Trott, Richard Baumgartner, Gek-Yong Ng
  • Publication number: 20080179964
    Abstract: A power switching circuit is disclosed. The power switching circuit includes an output switch coupled to a power supply, a control circuit controlling the first switch to output the power supply according to a voltage of a node, and a user switch for receiving a switch signal. Two clock circuits control the voltage of the node according to the period of the switch signal.
    Type: Application
    Filed: January 31, 2008
    Publication date: July 31, 2008
    Inventors: Chien-Szu Chiu, Mao-Chuan Chang
  • Publication number: 20080179965
    Abstract: A method and a circuit for controlling a switch intended to apply an AC signal, by application of a control signal on a terminal of a circuit, at least one signal of information as to the state of the switch or of a load that it controls being provided to said terminal in a time multiplexing with said control signal.
    Type: Application
    Filed: January 24, 2008
    Publication date: July 31, 2008
    Inventors: Pascal Paillet, Thierry Castagnet
  • Publication number: 20080179966
    Abstract: Disclosed is a grid interconnection device that converts electric power from a power supply device into predetermined alternating-current power, and interconnects the power supply device to a power distribution system. The grid interconnection device includes a detector that detects islanding of the power supply device, and a receiver that receives power failure information including local area information indicative of an area in which a power failure occurs, through a predetermined transmission path. The detector enhances detection sensitivity for the islanding when the received power failure information includes the local area information indicative of a different area from the area to which the power distribution system belongs.
    Type: Application
    Filed: January 29, 2008
    Publication date: July 31, 2008
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Wataru HORIO, Kazuo Ito, Masahiro Makino
  • Publication number: 20080179967
    Abstract: An transfer switch having a transfer control provides electric power to a load. The transfer switch includes a power switching device provided with electric power from a first power source, such as a utility power source, and a second power source, such as a generator power source. The transfer control is structured to monitor the second power source, maintain a runtime count of the second power source, and provide an indication of the runtime count, either at the transfer switch or at a location remote from the transfer switch and the second power source.
    Type: Application
    Filed: January 26, 2007
    Publication date: July 31, 2008
    Inventors: Todd Matthew Lathrop, Ronald Dale Hartzel, Bert Popovich
  • Publication number: 20080179968
    Abstract: An addressable power switch for selectively connecting a device to main power in response to command instructions received over a control bus. The control bus supplies a low voltage power source and the addressable power switch includes an energy storage device and charge circuit for deriving a charge current from the low voltage power source and charging the energy storage device. The addressable power switch also includes a latching relay for connecting the device to main power. The change in state of the latching relay is realized through controlling discharge of the energy storage device, which supplies an energy pulse upon discharge. The switch may be used in connection with addressable lighting systems.
    Type: Application
    Filed: January 29, 2007
    Publication date: July 31, 2008
    Inventors: Barna Szabados, Roumanos Joseph Dableh, Kyle Van Bavel
  • Publication number: 20080179969
    Abstract: An assembly and method for providing at multiphase current signals in which a plurality of conductors is arranged with conductors carrying dissimilar phases adjacent one another, and preferably in a balanced arrangement, such that the induced magnetic fields are subtractive from each other, and the assembly with reduced inductance results.
    Type: Application
    Filed: January 31, 2007
    Publication date: July 31, 2008
    Inventors: Kevin A. Dooley, Joshua David Bell, Gilles D. Gagnon, Michael J. Dowhan, Joseph Brand, Jerzy Wasiewicz
  • Publication number: 20080179970
    Abstract: An origin microadjustment mechanism for a linear motor is assembled on a stator of the linear motor and comprises a load bearing member fixed to a sensing member and two positioning seats. The load bearing member is movably passed through the positioning seats, and the positioning seats are fixed to the stator, so as to adjust the position of the sensing member relative to the stator.
    Type: Application
    Filed: January 28, 2007
    Publication date: July 31, 2008
    Inventors: Chi-Pin CHOU, Tsang-Chou Lee
  • Publication number: 20080179971
    Abstract: An actuator assembly including an actuator housing assembly and a single axis of rotation locking member fixedly attached to a portion of the actuator housing assembly and an external mounting structure. The single axis of rotation locking member restricting rotational movement of the actuator housing assembly about at least one axis. The single axis of rotation locking member is coupled at a first end to the actuator housing assembly about a Y axis and at a 90° angle to an X and Z axis providing rotation of the actuator housing assembly about the Y axis. The single axis of rotation locking member is coupled at a second end to a mounting structure, and more particularly a mounting pin, about an X axis and at a 90° angle to a Y and Z axis providing rotation of the actuator housing assembly about the X axis. The actuator assembly is thereby restricted from rotation about the Z axis.
    Type: Application
    Filed: January 31, 2007
    Publication date: July 31, 2008
    Inventors: James N. Quitmeyer, Dwayne M. Benson, Kellan P. Geck
  • Publication number: 20080179972
    Abstract: A heat generating member cooling structure in which a coolant space is formed between a heat releasing surface that is thermally connected to a heat generating member and an opposing surface that is positioned opposite the heat releasing surface, includes a plurality of heat releasing fins that are provided within the coolant space so as to be parallel to one another and stand from the heat releasing surface toward the opposing surface, and an inter-fin passage, through which a coolant flows, formed between every two of the plurality of heat releasing fins that are positioned adjacent to each other.
    Type: Application
    Filed: January 22, 2008
    Publication date: July 31, 2008
    Applicants: AISIN AW CO., LTD., NAKAMURA MFG. CO., LTD.
    Inventors: Kazuo Aoki, Junji Tsuruoka, Seiji Yasui, Yasushi Kabata, Hideyuki Miyahara, Masaharu Kumagai
  • Publication number: 20080179973
    Abstract: Certain exemplary embodiments can comprise a method, which can comprise obtaining an electric motor cooling fan. The electric motor cooling fan can be adapted to be operatively coupled to a motor enclosure of an electric motor. The motor enclosure can be configured in a ventilation pattern selected from a plurality of ventilation patterns.
    Type: Application
    Filed: September 26, 2007
    Publication date: July 31, 2008
    Inventors: Scott Kreitzer, Patric Willems, Ekkehard Ressel
  • Publication number: 20080179974
    Abstract: A motor protector receiving bracket (10) is shown for use with a multiphase motor protector having at least two terminal pins (4 and 5). The bracket has a back wall formed with first (12e) and second (12h) slots for receiving respective pin terminals of the protector cradled in the bracket and are formed with features to prevent any movement of the protector relative to the bracket. The bracket is in turn adapted to be attached to a spring clip (14) welded to a motor casing for a low cost attachment system.
    Type: Application
    Filed: December 17, 2007
    Publication date: July 31, 2008
    Inventors: Timothy F. Kimball, Huade Tan
  • Publication number: 20080179975
    Abstract: An insulator is arranged to cover a resolver stator core and includes a cover portion arranged to cover a core back portion and a tooth cover portion for covering a corresponding tooth. In the cover portion, a bridge pin is disposed to project axially upward. After a conductive wire is wound around a tooth, and hooked on the bridge pin, the conductive wire is wound around another tooth. In the case where the insulator is formed by injection molding, an injection gate scar portion is formed on a top surface of the bridge pin, at a position radially outside a crossover portion of the conductive wire, on a top surface of an inner wall of the tooth cover portion, or on a back surface of the insulator.
    Type: Application
    Filed: January 28, 2008
    Publication date: July 31, 2008
    Applicant: NIDEC CORPORATION
    Inventors: Nakaba KATAOKA, Keita NAKANISHI
  • Publication number: 20080179976
    Abstract: A vibrating mechanism of a body vibration machine includes a step, a bottom board and a driving mechanism that has upper linking bars and lower linking bars connected with the step and the bottom board, and plural direction-restricting sets installed between the step and the bottom board. Each position-restricting set has a cylinder and a guiding bar inserted in the cylinder to enable the step moved vertically. A crank is connected with the upper linking bar and the lower linking bar via a pivotal shaft so that it can spontaneously drive the pivotal shaft to move circularly, enabling the step to move vertically. Moreover, a small motor is powerful enough as the step is driven to move by the upper and the lower linking bar instead of the driving motor directly.
    Type: Application
    Filed: January 29, 2007
    Publication date: July 31, 2008
    Applicant: Tonic Fitness Technology, Inc.
    Inventor: Mu-Chuan Wu
  • Publication number: 20080179977
    Abstract: A stepping motor includes a housing a supporting shaft a rotor, and a stator. The housing includes a first wall and a second wall facing each other. The supporting shaft is inserted into a through hole of the rotor and is held by the first wall and the second wall. The rotor has a first end face and a second end face in an axial direction of the rotor. The first end face and the second end face are separated from the first wall and the second wall, respectively. A lubricant fills between the through hole and the supporting shaft, and an oil repellent agent is applied at a predetermined first area of the first wall around the supporting shaft and a predetermined second area of the second wall around the supporting shaft.
    Type: Application
    Filed: December 13, 2007
    Publication date: July 31, 2008
    Applicant: DENSO CORPORATION
    Inventor: Hideyuki NAKANE
  • Publication number: 20080179978
    Abstract: In a motor, a retaining claw with a slanted surface is arranged around the upper end of a tubular portion of a housing for mounting a rotor. A cylindrical portion is integrally formed in a peripheral area of a rotational axis of a turntable. A retaining member with retaining portions having a J-shaped cross section is attached to the lower surface of the turntable. Arms of the retaining portions are located in the vicinity of the lower end of the cylindrical portion. In mounting the rotor onto the housing, the retaining portions contact the slanted surface and the arms are elastically deformed. Upon completion of the mounting, the arms return to a state before the elastic deformation, so that the retaining claw prevents the rotor from coming off.
    Type: Application
    Filed: January 24, 2008
    Publication date: July 31, 2008
    Applicant: NIDEC CORPORATION
    Inventor: Hiroyuki ICHIZAKI
  • Publication number: 20080179979
    Abstract: An electric motor includes a stator, a rotor positioned adjacent the stator and cooperating with the stator to generate a torque, and a bearing support assembly coupled to the rotor to at least partially support the rotor for rotation. An end frame includes a post positioned to engage and support the bearing support assembly. The end frame and the bearing support assembly cooperate to define a space therebetween. A mainframe is coupled to and cooperates with the end frame to substantially enclose the stator, and a set of electronics for controlling the motor is mounted in the space.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 31, 2008
    Applicant: A. O. SMITH CORPORATION
    Inventor: Alice Nolley
  • Publication number: 20080179980
    Abstract: A rotor for an interior permanent magnet machine has a rotor body having an output shaft and a first cavity filled with magnetic material. Second cavities are disposed inboard of the first cavities and are not filled with magnetic material. Non-magnetic rods extend through the second cavities and protrude beyond end faces of the rotor body. The rods are press-fit in blind bores formed in non-magnetic end plates disposed adjacent the end faces of the rotor body. Shrink disks are shrunk around projecting ends of the output shaft in abutting relation with the end plates. In order to prevent induced voltage from generating current in the cage formed by the rods and end plates, an oxide layer is disposed between the rods and blind bores in the end plates.
    Type: Application
    Filed: January 30, 2007
    Publication date: July 31, 2008
    Inventors: ROBERT T. DAWSEY, Constantin C. Stancu, Eric R. Ostrom, Young Doo
  • Publication number: 20080179981
    Abstract: A high phase order induction machine wound and permitted by coil symmetry to operate at fewer than the magnetically optimal number of poles is constrained by symmetry to be a two pole machine and be capable of operating on odd harmonics only, but with back-iron, end rings, and rotor core optimized for 10 pole operation, might be used normally in ‘5th harmonic’ mode, with ‘7th harmonic’ utilized to engage the ‘mesh effect’. Such a machine thus appears to be operating in the ‘1.4 harmonic’. A high phase order induction machine driven by a second harmonic drive, in which a symmetry imposed by full span windings is broken. This may be most simply accomplished through the use of short pitch windings. Other possible approaches include using non-wound slot drive, and using toroidal windings which localize coils to individual slots.
    Type: Application
    Filed: January 9, 2008
    Publication date: July 31, 2008
    Inventor: Jonathan Sidney Edelson
  • Publication number: 20080179982
    Abstract: The present invention deals with a transverse flux machine of the switched reluctance variety. The transverse flux machine consists of multiple phases where each phase is spaced axially along the shaft. Axial spacing provides many benefits including a decreased weight and a capability to use simple wound bobbin coils for the windings. An embedded cooling loop is provided within the coils themselves. This cooling loop provides internal temperature regulation for the windings and allows for a higher efficiency among other benefits.
    Type: Application
    Filed: January 30, 2007
    Publication date: July 31, 2008
    Inventor: Dennis A. Kramer
  • Publication number: 20080179983
    Abstract: In a rotary electric machine, a field coil member includes a first edgewise coil composed of a plurality of coaxially layered convolutions. The coaxially layered convolutions are wound around the outer periphery of the first pole core. The field coil member includes a second edgewise coil composed of a plurality of coaxially layered convolutions. The coaxially layered convolutions are wound around the outer periphery of the second pole core. The field coil member includes a link portion connecting between the first edgewise coil and the second edgewise coil in series. One of the first and second edgewise coils has one coil end extending therefrom to cross over the link portion at a crossover portion thereof. The crossover portion between the one coil end and the link portion is arranged to be non-overlapped with the convolutions of the one of the first and second edgewise coils.
    Type: Application
    Filed: September 6, 2007
    Publication date: July 31, 2008
    Applicant: DENSO CORPORATION
    Inventors: Youichi Hasegawa, Tomoya Imanishi
  • Publication number: 20080179984
    Abstract: A method for manufacturing a conductor bar of a rotating electrical machine includes providing a conductor defining a longitudinal direction and having a rectangular cross section, and building up an insulation to a thickness d around the conductor by progressively winding an insulating tape around the conductor a plurality of times in the form of a spiral in the longitudinal direction. The building up of the insulation includes winding the insulation tape around the conductor using parallel winding up to a first partial thickness, and winding the insulating tape around the conductor using non-parallel winding from the first partial thickness.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 31, 2008
    Applicant: ALSTOM Technology Ltd
    Inventor: Thomas Baumann
  • Publication number: 20080179985
    Abstract: An alternator of high quality and high performance includes a rotor, a stator core arranged so as to surround the rotor and having a plurality of axially extending slots arranged at a predetermined circumferential pitch, and a stator having a stator winding fitted into the slots. The stator core includes element iron cores of a hexahedral shape which are deformed to curve, with their adjacent end faces being abutted and bonded to each other, each of the element iron cores being composed of thin steel plates laminated and integrated with one another, with concave and convex portions formed on the thin steel plates being fitting with each other. The concave and convex portions are formed on a borderline between a compressive region of the stator core at an inner diameter side thereof and a tensile region of the stator core at an outer diameter side thereof.
    Type: Application
    Filed: July 2, 2007
    Publication date: July 31, 2008
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Wakaki Miyaji, Shinji Nishimura
  • Publication number: 20080179986
    Abstract: Respective divided segments of a collet are moved radially outward by moving an arbor axially. The respective divided segments thereby press an inner circumferential surface of a stator core of a stator from radially inside such that the stator is held coaxially by the collet. Next, shaping rollers are lowered so as to press an outer circumferential surface of the stator core. The stator is rotated by rotating the collet in that state. Thus, the inner circumferential surface of the stator core is compressed and plastically deformed so as to conform to the collet and the outer circumferential surface of the stator core is compressed and plastically deformed by the shaping rollers, correcting the inner circumferential surface and the outer circumferential surface of the stator core so as to be coaxial and so as to have a high degree of roundness.
    Type: Application
    Filed: July 26, 2007
    Publication date: July 31, 2008
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshihiro HARADA, Toshiaki KASHIHARA, Kensaku KUROKI, Yasukazu NISHIMURA, Shogo OKAMOTO, Shinji NISHIMURA
  • Publication number: 20080179987
    Abstract: A rotor is adapted to be used in a reluctance motor configured to generate a magnetic field around the rotor to form magnetic circuits passing through the rotor to produce a driving force corresponding to a torque generated by changes in magnetic reluctance in the magnetic circuits. The rotor includes a first salient pole group and a second salient pole group. The first salient pole group includes a plurality of first salient poles configured and arranged to be energized simultaneously with the first salient poles being spaced apart from each other in a circumferential direction of the rotor. The second salient pole group includes a plurality of second salient poles configured and arranged to be energized simultaneously with the second salient poles being spaced apart from each other in the circumferential direction of the rotor. The first salient pole group is magnetically insulated from the second salient pole group.
    Type: Application
    Filed: January 10, 2008
    Publication date: July 31, 2008
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Tomoya IMAZU, Tsutomu TANIMOTO
  • Publication number: 20080179988
    Abstract: A microelectromechanical systems (MEMS) device includes a frame, an actuator formed on the same layer as the frame and connected to the frame to be capable of performing a relative motion with respect to the frame, and at least one stopper restricting a displacement of the actuator in a direction along the height of the actuator. The MEMS device is fabricated by bonding a second substrate to a first substrate, forming the frame and the actuator by partially removing the first substrate, and forming the at least one stopper by partially removing the second substrate.
    Type: Application
    Filed: October 16, 2007
    Publication date: July 31, 2008
    Applicant: Samsung Electro-mechanics Co., Ltd.
    Inventors: Hee-moon Jeong, Jin-woo Cho, Yong-hwa Park, Jun-o Kim, Seok-mo Chang
  • Publication number: 20080179989
    Abstract: A Lamb wave device includes a base substrate, a piezoelectric thin film which is provided on the base substrate and which has a floating portion floating above the base substrate, the floating portion having a first surface facing the base substrate and a second surface opposite to the first surface, and an IDT electrode disposed on at least one of the first and the second surfaces of the piezoelectric thin film. The piezoelectric thin film is made of LiTaO3 or LiNbO3, and the c-axis of the piezoelectric thin film is set in approximately the same direction as that of a line substantially perpendicular to the first and the second surfaces of the piezoelectric thin film, and the crystal structure of the piezoelectric thin film is a rotation twin crystal having the c-axis functioning as the rotation axis.
    Type: Application
    Filed: April 9, 2008
    Publication date: July 31, 2008
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Takashi OGAMI, Kansho YAMAMOTO, Michio KADOTA
  • Publication number: 20080179990
    Abstract: Sacrificial electrodes with fractal-shaped are formed on a SAW (surface acoustic wave) device. The sacrificial electrodes discharge electro-static charge in the SAW device for protecting the IDT (inter-digital transducer) from electrostatic break. Moreover, the sacrificial electrodes can control the path and the discharging degree of the electro-static discharge to avoid losing the electro-static discharge protection due to the sacrificial electrodes are broken.
    Type: Application
    Filed: March 26, 2008
    Publication date: July 31, 2008
    Inventors: Yu-Tung Huang, Chi-Yun Chen, Shih-Cheng Chiu, Ken-Huang Lin, Kuan-Yu Lin
  • Publication number: 20080179991
    Abstract: An electronic component has a structure which prevents corrosion caused by moisture intrusion through an electrode pattern extending inwardly from an edge connecting a side and one of main surfaces of a substrate and, therefore, deterioration of a characteristic rarely occurs over time. The electronic component includes, on the first main surface of the substrate, the first electrode pattern extending inwardly from an edge connecting the side of the substrate and the first main surface of the substrate, the second electrode pattern that is opposite to the end of the first electrode pattern through the gap, and the third electrode pattern that is disposed on the first electrode pattern and the second electrode pattern such that it covers the gap. The third electrode pattern is formed from a metal film that is highly resistant to corrosion, the corrosion resistance of which is superior to that of metal films forming the first electrode pattern and the second electrode pattern.
    Type: Application
    Filed: April 10, 2008
    Publication date: July 31, 2008
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Yutaka Ishiura, Takeshi Matsumae, Kazuhiro Inoue, Toshiaki Takata
  • Publication number: 20080179992
    Abstract: Driving techniques are provided which are capable of providing a sufficiently low-speed drive and a smooth change in the drive speed. Voltage is applied to an electromechanical element by repeating an output cycle in which one voltage value out of a first voltage value, a second voltage value lower than the first voltage value, and a third voltage value lower than the second voltage value is output, and which is a cycle of firstly outputting the first voltage value during a first period, secondly outputting the second voltage value during a second period, thirdly outputting the third voltage value during a third period, and finally outputting the second voltage value during a fourth period. During an increase in the length of the first period, at least either one of the inclinations of change in the lengths of the second and fourth periods with respect to the change in the length of the first period is changed.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 31, 2008
    Inventors: Atsuhiro Noda, Akira Kosaka
  • Publication number: 20080179993
    Abstract: A load-bearing structural member has a continuous structural material with piezoelectric material particles mixed in throughout. The structural material may be any of a variety of suitable materials, such as polymer materials, composite materials, ceramic materials, or concrete. The piezoelectric material particles may be used for evaluating the soundness of the structural member, such as in quality control or structural health monitoring processes. The structural member may include one or more conductive pickups used for receiving signals from the structural member. The signals may be induced by introducing ultrasonic signals or vibrational resonance signals into the structural member. The response from such induced signals may be used for quality control purposes or structural health monitoring.
    Type: Application
    Filed: January 30, 2007
    Publication date: July 31, 2008
    Inventor: Terry M. Sanderson
  • Publication number: 20080179994
    Abstract: An energy trap piezoelectric resonator makes use of a harmonic wave in a thickness longitudinal vibration mode and can effectively suppress a spurious fundamental wave in a thickness longitudinal vibration mode without significantly suppressing the harmonic wave that is used for the resonator. The energy trap piezoelectric resonator has a first excitation electrode disposed at an upper surface of a piezoelectric substrate polarized in a thickness direction and a second excitation electrode disposed at a lower surface, and a floating electrode disposed at least one of the upper surface and/or the lower surface of the piezoelectric substrate so as to extend towards and away from the first excitation electrode with respect to a node of an electric potential distribution based on electric charges generated by the fundamental wave that is propagated when an energy trap vibration portion where the excitation electrodes oppose each other is excited.
    Type: Application
    Filed: April 20, 2005
    Publication date: July 31, 2008
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Hitoshi Sakaguchi, Hiroaki Kaida, Takashi Hase
  • Publication number: 20080179995
    Abstract: In a piezoelectric resonator, a portion of a thin film unit is supported by a substrate. A portion of the thin film unit acoustically isolated from the substrate includes a) a vibration unit and b) an additional film. The vibration unit includes a piezoelectric film sandwiched between a pair of electrodes. The piezoelectric film is overlapped with the pair of electrodes in plan view. The additional film is disposed on one of the piezoelectric film and the electrodes so as to extend along at least a portion of the periphery of the vibration unit. When x (MN·second/m3) denotes an acoustic impedance of the additional film defined by the square root of the product of the density and Young's modulus, A denotes the product of the density and the thickness of the additional film, B denotes the product of the densities and the thicknesses of the electrodes, and y=A/B, the following conditional expressions are satisfied: In the range of 9.0?x<44.0, 0.0092·x+0.88?y<0.067·x+0.60 ??(1a) In the range of 44.
    Type: Application
    Filed: April 9, 2008
    Publication date: July 31, 2008
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Keiichi UMEDA, Hideki KAWAMURA
  • Publication number: 20080179996
    Abstract: Internal electrode layers (5) include a common electrode layer (3) and feed electrode layers (6) alternately placed in a stacking direction with piezoelectric layers (1) interposed between the common electrode layer (3) and the feed electrode layers (6). The common electrode layer (3) has a common electrode (3a). The feed electrode layers (6) include a first feed electrode layer (6a) and a second feed electrode layer (6b). The first feed electrode layer (6) has a pair of electrically continuous first electrodes (2, 2) disposed on two areas (A2, A4) opposed along a first-diagonal-line direction (D1) of the principal surface of the associated piezoelectric layer (1) among four areas (A1 through A4) defined by dividing the principal surface of the associated piezoelectric layer (1) into two parts in the longitudinal and transverse directions (L) and (S).
    Type: Application
    Filed: January 19, 2007
    Publication date: July 31, 2008
    Inventor: Yusuke Adachi
  • Publication number: 20080179997
    Abstract: An object is to provide a tuning-fork type piezoelectric unit in which as well as maintaining the vibration characteristics in the stationary condition when miniaturized, the bond strength is maintained, and also the frequency change for before and after a drop impact test is suppressed.
    Type: Application
    Filed: January 28, 2008
    Publication date: July 31, 2008
    Applicant: Nihon Dempa Kogyo Co., Ltd.
    Inventor: Ryoichi Ichikawa
  • Publication number: 20080179998
    Abstract: A quartz crystal unit comprising a quartz crystal tuning fork resonator capable of vibrating in a flexural mode of an inverse phase and having a quartz crystal tuning fork base, and first and second quartz crystal tuning fork tines connected to the quartz crystal tuning fork base, an electrode being disposed on each of two of side surfaces of each of the first and second quartz crystal tuning fork tines so that the electrode disposed on each of two of the side surfaces of the first quartz crystal tuning fork tine has an electrical polarity opposite to an electrical polarity of the electrode disposed on each of two of the side surfaces of the second quartz crystal tuning fork tine, a motional capacitance C1 of a fundamental mode of vibration of the quartz crystal tuning fork resonator being greater than a motional capacitance C2 of a second overtone mode of vibration thereof.
    Type: Application
    Filed: February 14, 2008
    Publication date: July 31, 2008
    Inventor: Hirofumi Kawashima
  • Publication number: 20080179999
    Abstract: A motor drive system 10-1 for a railway vehicle is capable of reducing the weight of wiring, electromagnetic noise, and manufacturing cost. The motor drive system includes an inverter 11. The inverter is configured to control a motor 13-1 and is divided into at least two separate inverter units that are arranged integrally with the motor.
    Type: Application
    Filed: December 18, 2007
    Publication date: July 31, 2008
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yosuke NAKAZAWA, Shinichi Noda, Kazuaki Yuuki, Kazuaki Fukuda
  • Publication number: 20080180000
    Abstract: Power capacitors for AC motors are mounted diametrically on associated transmissions. The power capacitors are in one embodiment annular and in another embodiment, arcuate. By having power capacitors mounted on transmission housings diametrically, cooling of the power capacitors is facilitated for both air and liquid cooling.
    Type: Application
    Filed: January 30, 2007
    Publication date: July 31, 2008
    Inventors: Terence G. Ward, Alex Thompson, Brian A. Welchko
  • Publication number: 20080180001
    Abstract: A hand crank generator includes crank, gear transmission, and generation motor driven by the gear transmission. The crank and the gear transmission are coupled to each other. A clutch gear is coupled to where between the crank and the gear transmission. The crank is manually driven to further drive the gear transmission, and the generation motor is driven to generate electric current through the clutch gear. When the cranking stops, the clutch gear disengages from a motor gear disposed on the generation motor. A weighted wheel continues to revolve under inertia to drive the generation motor to keep on generating electric current without continuing to crank; therefore, achieving the purpose of saving manual efforts.
    Type: Application
    Filed: January 2, 2008
    Publication date: July 31, 2008
    Inventor: Jen Hao Dai
  • Publication number: 20080180002
    Abstract: A cabinet of electronic equipment includes a box-type first case with an open side made of a resin, and a box-type second case with an open side made of a resin to be fixed to the first case by engagement. An open part of the second case is engaged with an open part of the first case, and a plurality of hook formed on an inner wall of the open part of the first case are engaged with a plurality of engaging holes that are formed to pass through a wall of the open part of the second case and are elongated in the direction perpendicular to an engaging direction of the first and the second cases from an outer face side of the second case, so that the first and the second cases are coupled. A rib that crosses the engaging hole in its short side direction is formed integrally to the second case on its inner wall.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 31, 2008
    Inventor: Shinichi Kameoka
  • Publication number: 20080180003
    Abstract: A wall-mounted cabinet style display case for displaying an athletic uniform jersey neatly inside. The back frame of the cabinet is fastened to the wall first. The back frame has a flat open pocket inside and the jersey is neatly displayed by hanging the jersey on uniform specific shaped hangers and folding the jersey inside and around the pocket for proper jersey display length. A completely removable front frame fastens to the back frame by first latching the top back of the front frame to the top of the back frame. The front frame is secured using metal plates on the back of the front frame and opposable magnets located on the back frame.
    Type: Application
    Filed: January 31, 2007
    Publication date: July 31, 2008
    Applicant: CASEWORKS INTERNATIONAL, INC.
    Inventors: Norman H. Alman, Steve Block, Gerald Davis
  • Publication number: 20080180004
    Abstract: Assemblies and methods for mounting telecommunications equipment, such as patch panels is provided. A mounting assembly is disclosed including a swing gate adapted to host a plurality of telecommunications equipment. The swing gate is hingedly attached to a support frame by a pair of aligned hinges adapted to allow the swing gate to open and close. The support frame includes support members defining an opening for fitting telecommunications equipment within the support frame when the swing gate is closed. The support frame is adapted to be mounted with respect to various mounting locations such as a support structure of a raised floor or drop ceiling, a wall, and/or a cabinet. A cabinet adapted to enclose the support frame includes walls defining a cavity. At least one of the walls is a front door adapted to open and close and allow access to the swing gate when the front door is open. The cabinet is adapted to be mounted with respect to a raised floor, drop ceiling, or a wall.
    Type: Application
    Filed: January 31, 2007
    Publication date: July 31, 2008
    Inventors: Mark E. Martich, Lars R. Larsen, Stewart A. Levesque
  • Publication number: 20080180005
    Abstract: An enclosure suitable for housing equipment for which controlled access is desirable. The enclosure has at least one, preferably two, enclosure doors secured by securing assemblies selected from a group consisting of a lock cylinder assembly, an electronic lock assembly, a quarter-turn latch assembly, a compression latch assembly, a folding T latch assembly, a lift and turn compression latch assembly, a pawl/cam action latch assembly, a multi-point latch assembly and a bolt assembly for securing to a rotary latch. Each securing assembly is secured to a mounting plate so that the respective securing assemblies may be easily exchanged within a standardized opening in the respective enclosure doors.
    Type: Application
    Filed: March 31, 2008
    Publication date: July 31, 2008
    Inventor: Randy L. Squier
  • Publication number: 20080180006
    Abstract: A force supporting device for assisting a force required to move a flap of an overhead baggage compartment from an open position to a closed position includes a blockable piston cylinder unit attached to the flap for assisting the force required to move the flap, and a triggering device for blocking and releasing the blockable piston cylinder unit as a function of loading of the flap.
    Type: Application
    Filed: January 22, 2008
    Publication date: July 31, 2008
    Applicant: Stabilus GmbH
    Inventors: Jorg Hillen, Peter Kohns, Thorsten Muller, Michael Rudesheim, Dieter Wendling
  • Publication number: 20080180007
    Abstract: A portable and collapsible storage locker formed of rigid, interconnected panels which, when fully assembled, form a self-standing, integrally strong unit and, when collapsed, fold together to occupy a minimal volumetric space. Opposed side walls are hingedly connected to a front frame, and opposed end walls are hingedly connected to a rear wall panel, both to fold inwardly in interlocking fashion such that the side walls overlie the rear panel and the end walls overlie the side walls within the region bounded by the front frame. The storage locker may optionally include a full or partial height door hinged to the front frame. The door may also include a lock if desirable. The side walls include means for supporting one or more shelves for dividing the interior space of the assembled locker and the shelves may be removable or optionally hinged to a side wall panel.
    Type: Application
    Filed: January 29, 2007
    Publication date: July 31, 2008
    Inventor: Charles T. Quinn
  • Publication number: 20080180008
    Abstract: A modular furniture system operable in combination with a wall that has (a) an upper set of laterally extending slots and (b) a lower set of laterally extending slots. The system has a first rail that can be anchored to the wall, and having a first connector that engages at least one of the slots in a manner that assists in supporting a weight of the furniture.
    Type: Application
    Filed: January 25, 2008
    Publication date: July 31, 2008
    Applicant: PARALLAX GROUP INTERNATIONAL, LLC
    Inventors: Bruce Thrush, John Grimm