Patents Examined by Darren Schuberg
  • Patent number: 7462947
    Abstract: A system and method for operating a wind turbine with a generator, drivable by a rotor, for supplying electrical power to an electric load, in particular an electric grid, are disclosed. Briefly described, one embodiment generates electrical power from an electrical generator coupled to the wind turbine, outputs the generated electrical power to an electric grid, senses a disruption in the electric grid, maintains connection of the electrical generator during the disruption, and limits the generated electrical power during at least a portion of the disruption.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: December 9, 2008
    Inventor: Aloys Wobben
  • Patent number: 7462961
    Abstract: A superconductivity rotor has a field coil portion wound with a superconductivity wire, a support portion for supporting the field coil portion, torque tubes positioned at both ends of the support portion and transmitting a torque to an outside from the field coil portion, an inner casing for housing the field coil portion and the support portion; and an outer casing for housing the inner casing and the torque tube. The torque tube consists of a first torque tube positioned at one end of the support portion and a second torque tube positioned at the other end of the support portion. The first torque tube is formed into a vessel shape and has a plurality of engagement holes formed along a periphery thereof so that it is engaged with an engagement member, and the second torque tube comprises a disc-shaped structure consisting of plural plates and main ring-shaped members stacked, and is engaged with an engagement member.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: December 9, 2008
    Assignee: Doosan Heavy Industries & Construction Co., Ltd.
    Inventors: Woon-Sik Kwon, Tae-Sun Moon, Heui-Joo Park, Yeong-Chun Kim
  • Patent number: 7462974
    Abstract: An inertial driving actuator includes a fixing member, a moving element that is fixed to the fixing member and generates a small displacement by extension and contraction, an oscillation substrate that is fixed to the moving element and is moved linearly reciprocally by the small displacement, and a moving body that is moved by reciprocal movement of the oscillation substrate. The moving body has a first driving electrode. The oscillation substrate has a second driving electrode and a detection electrode, the area of the facing portion of the detection and first driving electrodes changing continuously as the moving body moves. The actuator further includes a frictional force controller that controls a frictional force generated between the oscillation substrate and moving body, and a position detector that detects the position of the moving body from the electrostatic capacitance of the facing portion of the first driving and detection electrodes.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: December 9, 2008
    Assignee: Olympus Corporation
    Inventor: Kaoru Matsuki
  • Patent number: 7462946
    Abstract: The present invention relates to a method for operating a wind turbine with a generator, drivable by a rotor, for supplying electrical power to an electrical load, in particular an electric grid. In order to compensate for fluctuations in the grid as far as possible, the system of the kind initially specified is developed in such a way that the power delivered to the load by the generator is regulated in response to a current outputted to the load.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: December 9, 2008
    Inventor: Aloys Wobben
  • Patent number: 7462977
    Abstract: A high temperature pressure transducer includes an extended tubular member having an opening from a front to a back surface. The tubular member is preferably fabricated from a metal. At the front end of the tubular member is a ceramic sensor face or tip which basically is a ceramic disk having a curved front surface and having an extending stem and which is inserted into the front opening of the tubular member. The column is of a given length and terminates in a back end. The back end has a predetermined portion which consists of two flat surfaces each on opposite sides. The back end containing the flat surfaces is thinner than the thickness of the column. On these flat surfaces are positioned suitable semiconductor piezoresistors. When a force is applied to the ceramic sensor face, it is transmitted axially through the tube or column where it is received by the sensors positioned on the flats. The sensors produce an output indicative of the force applied.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: December 9, 2008
    Assignee: Kulite Semiconductor Products, Inc
    Inventors: Anthony D. Kurtz, Adam Kane, Andrew Schwartz
  • Patent number: 7459834
    Abstract: A non-mechanical gimbal system is presented. The gimbal system includes a gimbal housing, including hemispherical and annular caps, rotatable sphere, and at least two curvilinear actuators. The hemispherical cap is attached to the annular cap in a removable fashion so as to surround the rotatable sphere. The curvilinear actuators are disposed between the rotatable sphere and gimbal housing. Curvilinear actuators rotate the rotatable sphere, via shear induced motion, with respect to the interior surface of the gimbal housing. The present invention has immediate applicability within security devices, games, toys, weapons (including guidance systems and aiming), and communication systems.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: December 2, 2008
    Assignee: QorTek, Inc.
    Inventors: Gareth J. Knowles, Maureen Mulvihill, Kenji Uchino, Brian Shea
  • Patent number: 7459833
    Abstract: A thin film piezoelectric actuator comprises a driving part at least one end of which is supported by an anchor portion. The driving part includes: a piezoelectric film, a first lower electrode provided under a first region of the piezoelectric film, a second lower electrode provided under a second region different from the first region of the piezoelectric film, a first upper electrode provided opposite to the first lower electrode on the piezoelectric film, a second upper electrode provided opposite to the second lower electrode on the piezoelectric film, a first connection part that electrically connects the first lower electrode and the second upper electrode via a first via hole formed in the piezoelectric film, and a second connection part that electrically connects the second lower electrode and the first upper electrode via a second via hole formed in the piezoelectric film.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: December 2, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Kawakubo, Ryoichi Ohara, Tomio Ono, Toshihiko Nagano, Michihiko Nishigaki, Takaaki Yasumoto, Kazuhide Abe, Kenya Sano
  • Patent number: 7459800
    Abstract: Electronic control for a hydraulic system driving an auxiliary power source is provided, with specific application as a system for controlling the operation of a hydraulically driven AC generator. The system may includes a hydraulic pump, a hydraulic motor drivably connected to the generator, a fluid circuit for circulating fluid from the pump to the motor and back. The fluid circuit may contain a bypass conduit to bypass the motor. The system also includes a proportional servo control valve assembly for controlling the fluid circuits and a control circuit for controlling the proportional control valve assembly. The control system can be capable of controlling the flow of hydraulic fluid to the motor powering the electrical or mechanical system. Sensors for measuring the operating parameters of the system and an operator interface module can influence the operation of the system.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: December 2, 2008
    Assignee: Nartron Corporation
    Inventors: Mario P. Boisvert, Randall L. Perrin, Marvin E. Puska, John E. Mitchell
  • Patent number: 7459827
    Abstract: A piezoelectric-driven MEMS device can be fabricated reliably and consistently. The piezoelectric-driven MEMS device includes: a movable flat beam having a piezoelectric film disposed above a substrate with a recessed portion such that the piezoelectric film is bridged over the recessed portion, piezoelectric drive mechanisms disposed at both ends of the piezoelectric film and configured to drive the piezoelectric film, and a first electrode disposed at the center of the substrate-side of the piezoelectric film, and a second electrode disposed on a flat part of the recessed portion of the substrate and facing the first electrode of the movable flat beam.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: December 2, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takashi Kawakubo, Toshihiko Nagano, Kazuhide Abe, Michihiko Nishigaki
  • Patent number: 7459809
    Abstract: An X-Y stage driver having a locking device and a data storage system having the X-Y stage driver. The X-Y stage driver includes an X-Y stage; a supporting unit that supports the X-Y stage and has elastic beams that support corners of the X-Y stage; a driving unit that drives the X-Y stage in a first direction and a second direction which is perpendicular to the first direction; a stiffener that prevents the X-Y stage from rotating; and a locking device that fixes the stiffener by an electrostatic force.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: December 2, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hong-sik Park, Jong-youp Shim, Seung-bum Hong, Dong-ki Min
  • Patent number: 7459832
    Abstract: At least one exemplary embodiment is directed to an electro-mechanical energy converter and a vibration wave driving apparatus that can facilitate miniaturization, high power, low cost and low voltage drive, by using a polygonal piezoelectric element with a plurality of electrode films divided by a boundary of electrode film on the polygonal piezoelectric element.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: December 2, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kiyoshi Nitto, Yutaka Maruyama, Takayuki Tsukimoto
  • Patent number: 7459828
    Abstract: The present invention discloses an SAW sensor device using a slit acoustic wave and a method thereof. The SAW sensor device using the slit acoustic wave includes a piezoelectric medium having a thin membrane at its one portion, a medium at the other portion, and a narrow slit which the slit acoustic wave passes through at its inside, an input IDT formed at the outer portion in the narrow slit of the piezoelectric medium, for transducing an electric input signal into the slit acoustic wave, and an output IDT formed at the outer portion opposite to the input IDT, for receiving the propagated slit acoustic wave and transducing the wave into an electric signal, whereby an external pressure transmitted to the device is sensed.
    Type: Grant
    Filed: June 9, 2003
    Date of Patent: December 2, 2008
    Assignee: LG Innotek Co., Ltd
    Inventors: Valentin Cherednick, Michail Dvoesherstov, Yong Lim Choi
  • Patent number: 7456536
    Abstract: An electric motor includes a rotor shaft arranged in a casing and having an axial hollow bore formed therethrough for passage of lubricating oil, a rotor, a stator, a pair of bearings each having an inner race and an outer race, a pair of bearing fixing parts supporting the rotation of the rotor shaft, and bearing cooling devices each having a cylindrical heat dissipation portion fixedly secured to the rotor shaft so as to be in contact with either one of end faces of the individual inner races, the heat dissipation portion extending from the one end face of each inner race to a side opposite to the bearings. A pair of spaces between rotor-side end faces of the bearings and the bearing fixing parts, respectively, are in communication with ring gaps between the heat dissipation portions and the rotor shaft, respectively, through radial communication holes in the rotor shaft.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: November 25, 2008
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naoya Tanaka, Kiyoshi Horiuchi, Nobuhiro Kanei
  • Patent number: 7455101
    Abstract: The present invention provides a micro loop thermosyphon cooler, having a thermal absorption unit and a condenser sequentially arranged therein, wherein the condenser is arranged at a position higher than that of the thermal absorption unit by a height. The thermal absorption unit further comprises a microchannel system formed by superimposing a cover on a substrate having a plurality of micro-grooves arranged thereon, so that the microchannel system is capable of allowing a fluid with a plurality of magnetic particles to flow in and through. In this regard the thermal absorption unit is used for absorbing thermal energy and thus enabling the fluid to vaporize and generate bubbles accordingly for elevating and driving the remaining fluid to flow into the condenser for discharging heat.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: November 25, 2008
    Assignee: Industrial Technology Research Institute
    Inventor: Li-Chieh Hsu
  • Patent number: 7456509
    Abstract: The invention is directed toward methods for operating a series hybrid vehicle in a manner that responds to the operator's demand for power output, while maximizing engine efficiency and minimizing disruptions in vehicle drivability. According to principles of the present invention, when the driver of a series hybrid vehicle makes a demand for power output, whether the secondary power source(s) is supplied with secondary energy stored in an energy storage device(s), direct input energy generated by an engine(s), or both, depends on the amount of available secondary energy stored in the vehicle's secondary storage device(s) alone, and in combination with vehicle speed. During the time that the engine is used to generate secondary energy, the power efficiency level at which the engine is operated also depends on the vehicle speed and the amount of available secondary energy stored in the vehicle's secondary storage device alone, and in combination with vehicle speed.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: November 25, 2008
    Assignee: The United States of America as represented by the Administrator of the U.S. Environmental Protection Agency
    Inventor: Charles L. Gray, Jr.
  • Patent number: 7456554
    Abstract: The present invention provides, in a physical quantity measuring system using a vibrator, a supporting structure of a vibrator for reducing the zero-point temperature drift of detection signal. It is provided a supporting member 22 for supporting a vibrator 1A with bonding wires 26. The supporting member 22 has a supporting plate 40 with an opening 25 formed therein to be positioned direct under a vibrator 1A, and a bonding wire 26 comprising a bonding end 29 to be bonded with the vibrator 1A, a fixed portion 26a fixed on the supporting plate 40 and a bent portion 28 direct under the opening 25. A distance “L1” between the bent portion 28 and a position 39 where the bonding wire 26 starts to protrude from the supporting plate 40 is 10 percent or more of a distance “L2” of the bent portion 28 and the bonding end 29.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: November 25, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Seiji Ishikawa, Takayuki Kikuchi, Shigeki Hayashi
  • Patent number: 7456552
    Abstract: A piezo-electric oscillator has a reduced manufacturing cost using a general purpose piezo-electric vibrator, while coping with miniaturization. The piezo-electric oscillator has resin; a substrate having an upper face, a bottom face, a conductive terminal portion, and a mounting terminal portion at the bottom face; and a piezo-electric vibrator including a package, a conductive portion, a cover plate, a piezo-electric vibration piece, an external terminal portion; and an oscillation circuit element having an oscillation circuit. The piezo-electric vibration piece is housed within the package and, the package is fixed to the upper face of the substrate and sealed with the cover plate. The external terminal portion at a surface of the package is electrically coupled with the piezo-electric vibration piece and, at least the conductive portion excluding the mounting terminal portion is sealed with the resin. The oscillation circuit element is fixed to a face of the package opposite to the substrate.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: November 25, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Seiichi Chiba, Katsuhiko Miyazaki, Mutsuo Hayashi
  • Patent number: 7456549
    Abstract: The present invention relates to mechanical-electrical power conversion systems. The systems comprise one or more electroactive polymers that convert between electrical and mechanical energy. When a voltage is applied to electrodes contacting an electroactive polymer, the polymer deflects. This deflection may be converted into rotation of a power shaft included in a motor. Repeated deflection of the polymer may then produce continuous rotation of the power shaft.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: November 25, 2008
    Assignee: SRI International
    Inventors: Jon Heim, Ronald E. Pelrine, Roy D. Kornbluh, Joseph Stephen Eckerle
  • Patent number: 7456528
    Abstract: A magnet assembly includes a back iron and an array of magnets. The back iron is in the form of a plate having opposed surfaces. The magnets are arranged along one of the surfaces, with the other surface being dimensioned and configured according to the magnetic field distribution associated with the magnets. The back iron geometry provides for reduced mass, reduced leakage flux, and high flux densities to improve performance of a linear motor that employs such a magnet assembly.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: November 25, 2008
    Assignee: Anorad Corporation
    Inventors: Nandakumar Thirunarayan-Kumar, James F. Smith
  • Patent number: 7453240
    Abstract: A generator having a field coil L, and an SW1 control circuit 2 for controlling field current flowing through the field coil L. When a generating operation of the generator is to be ended, a switch 1 SW1 is turned off to interrupt the field current flowing through the field coil L, and a switch 2 SW2 is turned off to allow the field current remaining the field coil L to the current path including a resistance element 1 with a resistance element capable of quickly attenuating the field current.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: November 18, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Tatsumi Yamauchi, Shinji Shirakawa, Masahiro Iwamura, Masamitsu Inaba, Keiichi Mashino, Keiji Kunii