Patents Represented by Attorney Sughrue, Mion, PLC
  • Patent number: 8159792
    Abstract: In a motor control device that drives a plurality of motors with one DC power supply, detection of a short circuit fault occurring in the motors is realized with an inexpensive configuration. In order to drive the plurality of motors (105, 106), a current detection resistor (404, 405) is arranged between a connection point on positive terminal sides of a plurality of electric power converters (401, 402) connected in parallel to a DC power supply (403) and a positive terminal of the DC power supply, or also between a connection point on negative terminal sides of the plurality of electric power converters and a negative terminal (ground) of the DC power supply, to thereby detect the short circuit fault based on a voltage of the current detection resistor.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: April 17, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasufumi Ogawa, Nozomu Kamioka
  • Patent number: 7085523
    Abstract: A belt member is seamed to form an endless belt which is stretched by a plurality of roller members and circulated in a first direction. The belt member is provided with an electrode portion at a first end portion thereof in a second direction perpendicular to the first direction. A cleaning member is abutted against the belt member. A seam of the belt member extends obliquely relative to the first direction such that an end of the seam confronting the electrode portion is situated in an upstream side of the first direction.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: August 1, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Shigeo Fujita, Toshihiko Yamazaki, Hiroshi Ito, Shinichi Kamoshida
  • Patent number: 7049586
    Abstract: Bright and dark field imaging operations in an optical inspection system occur along substantially the same optical path using the same light source by producing either a circular or an annular laser beam. Multiple beam splitting is achieved through the use of a diffractive optical element having uniform diffraction efficiency. A confocal arrangement for bright field and dark field imaging can be applied with multiple beam scanning for suppressing the signal from under-layers. A scan direction not perpendicular to the direction of movement of a target provides for improved die-to-die comparisons.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: May 23, 2006
    Assignee: Applied Material Israel, Ltd.
    Inventor: Silviu Reinhorn
  • Patent number: 6455951
    Abstract: A power supply system having a simple arrangement of connections between a load connected to a positive terminal of a high voltage battery via a pulse modulation control circuit and to and a positive terminal of a low voltage battery permits loading to be controlled throughout the system without damage or electromagnetic interference. The power supply system can accommodate low voltage loads on the high voltage subsystem to reduce conversion requirements for any DC/DC converter that is included in the power supply system. A charging controller regulates the amount of charge supplied to the high voltage and low voltage batteries.
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: September 24, 2002
    Assignee: Yazaki North America, Inc.
    Inventors: Gil Shultz, Chris Shultz
  • Patent number: 6455963
    Abstract: A frame for an electric motor is provided with a high heat discharge efficiency at low manufacturing cost wherein a plurality of cooling media paths, grooves, groove paths, media paths and communication paths are formed on the frame using a diecast process. A plurality of fins are formed in the grooves and a plurality of cooling media guide members are secured about the periphery of the frame to control the flow of the cooling media.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: September 24, 2002
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Junichiro Sakurai, Masafumi Sakuma, Tetsuo Wakita, Yuki Tojima