Patents by Inventor Hajime Iida

Hajime Iida has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200290670
    Abstract: A plurality of power supply circuits include a second power supply circuit for a CPU included in a control unit and a first power supply circuit for another circuit. An output voltage from the first power supply circuit is higher than an output voltage from the second power supply circuit. A range of input voltage is divided into three levels of voltage sub-ranges in accordance with a requirements specification. When the input voltage falls within a lower level voltage sub-range, both of an output function of the first power supply circuit and an output function of the second power supply circuit are stopped. When the input voltage falls within an intermediate level voltage sub-range, the output function of the first power supply circuit is stopped. When the input voltage falls within an upper level voltage sub-range, all circuits are controlled so as to operate.
    Type: Application
    Filed: April 8, 2016
    Publication date: September 17, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventor: Hajime IIDA
  • Patent number: 10196085
    Abstract: In an electric power steering device assisted by a brushless motor, an induced voltage from a brushless motor is detected when a main power supply is off. The motor is determined to be in a high rpm state when the induced voltage is in a first transient state from a voltage?a high rpm detection threshold Th1 to a voltage?Th1, thereby setting an intermittent excitation cycle of a revolution angle sensor connected to the motor to a short cycle. The motor is determined to be in a low rpm state when the induced voltage becomes a voltage?a high rpm detection threshold Th2 after a wait period corresponding to an electrical angle between peaks or valleys of an output voltage has elapsed in a second transient state from a voltage?Th1 to a voltage?Th2, thereby setting the cycle to a long cycle.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: February 5, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hajime Iida, Hiroshi Gokan, Kenji Ogawa
  • Publication number: 20170369092
    Abstract: In an electric power steering device assisted by a brushless motor, an induced voltage from a brushless motor is detected when a main power supply is off. The motor is determined to be in a high rpm state when the induced voltage is in a first transient state from a voltage ?a high rpm detection threshold Th1 to a voltage?Th1, thereby setting an intermittent excitation cycle of a revolution angle sensor connected to the motor to a short cycle. The motor is determined to be in a low rpm state when the induced voltage becomes a voltage?a high rpm detection threshold Th2 after a wait period corresponding to an electrical angle between peaks or valleys of an output voltage has elapsed in a second transient state from a voltage–Th1 to a voltage?Th2, thereby setting the cycle to a long cycle.
    Type: Application
    Filed: February 26, 2015
    Publication date: December 28, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hajime IIDA, Hiroshi GOKAN, Kenji OGAWA
  • Patent number: 9506801
    Abstract: A prover includes a measurement cylinder; a hydraulic cylinder coupled with a side of a downstream end of the measurement cylinder; a measuring piston that moves through a predetermined distance from an upstream side toward a downstream side through the measurement cylinder to eject a reference volume of fluid; and a piston rod that is movably accommodated in the hydraulic cylinder, and has the measuring piston and the piston rod separately constructed. The prover includes measurement standby position stop means, and when returning the measuring piston to a predetermined measurement standby position, the piston rod moves the measuring piston from the downstream side to the upstream side and the measurement standby position stop means stops the measuring piston at the predetermined measurement standby position, after which only the piston rod is caused to move from the upstream side to the downstream side and is accommodated in the hydraulic cylinder.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: November 29, 2016
    Assignee: OVAL Corporation
    Inventors: Masahito Yoshimoto, Hajime Iida, Koji Atsumi
  • Publication number: 20150308882
    Abstract: A prover includes a measurement cylinder; a hydraulic cylinder coupled with a side of a downstream end of the measurement cylinder; a measuring piston that moves through a predetermined distance from an upstream side toward a downstream side through the measurement cylinder to eject a reference volume of fluid; and a piston rod that is movably accommodated in the hydraulic cylinder, and has the measuring piston and the piston rod separately constructed. The prover includes measurement standby position stop means, and when returning the measuring piston to a predetermined measurement standby position, the piston rod moves the measuring piston from the downstream side to the upstream side and the measurement standby position stop means stops the measuring piston at the predetermined measurement standby position, after which only the piston rod is caused to move from the upstream side to the downstream side and is accommodated in the hydraulic cylinder.
    Type: Application
    Filed: April 18, 2014
    Publication date: October 29, 2015
    Applicant: OVAL CORPORATION
    Inventors: Masahito YOSHIMOTO, Hajime IIDA, Koji ATSUMI
  • Patent number: 8915115
    Abstract: A piston prover comprises a measurement cylinder; a hydraulic cylinder coupled with a downstream end of the measurement cylinder; a measuring piston that moves a predetermined distance through the measurement cylinder during a measurement due to a fluid flow to eject a reference volume of fluid; and a piston rod that is movably in the hydraulic cylinder, wherein the measuring piston and the piston rod are separately constructed. When returning the measuring piston to a predetermined upstream measurement standby position, the piston rod moves the measuring piston to set the measuring piston at the predetermined measurement standby position, and thereafter only the piston rod is moved from upstream to downstream and is accommodated in the hydraulic cylinder.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: December 23, 2014
    Assignee: Oval Corporation
    Inventors: Hirokazu Kuge, Hajime Iida
  • Patent number: 8659387
    Abstract: A function for authenticating an operator to control whether to permit them to operate a vehicle (20) can be added to the vehicle by simple modification. An operation permission control device (22) is installed on the vehicle (20). The operation permission control device (22) incorporates a relay inserted in the middle of a start signal line (47) connecting a key switch (46) and vehicle start circuit (48) (starter relay of an engine-powered vehicle or main controller of a battery-powered vehicle) and can open and close the start signal line (47). The operation permission control device (22) reads data of a authentication card (34) carried by the operator, collates the read data with preprogrammed data in a removable set memory a (32). If the data match, the device connects the start signal line (47) to enable start of the vehicle.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: February 25, 2014
    Assignees: Komatsu Utility Co., Ltd., Komatsu Ltd.
    Inventors: Shigeru Nitta, Hajime Iida, Manabu Uenosono, Takeshi Kurokawa, Shinichiro Okubo, Kazuaki Ohtsuki
  • Publication number: 20130091923
    Abstract: A piston prover comprises a measurement cylinder; a hydraulic cylinder coupled with a downstream end of the measurement cylinder; a measuring piston that moves a predetermined distance through the measurement cylinder during a measurement due to a fluid flow to eject a reference volume of fluid; and a piston rod that is movably in the hydraulic cylinder, wherein the measuring piston and the piston rod are separately constructed, When returning the measuring piston to a predetermined upstream measurement standby position, the piston rod moves the measuring piston to set the measuring piston at the predetermined measurement standby position, and thereafter only the piston rod is moved from upstream to downstream and is accommodated in the hydraulic cylinder.
    Type: Application
    Filed: March 23, 2011
    Publication date: April 18, 2013
    Inventors: Hirokazu Kuge, Hajime Iida
  • Publication number: 20090128356
    Abstract: A function for authenticating an operator to control whether to permit them to operate a vehicle (20) can be added to the vehicle by simple modification. An operation permission control device (22) is installed on the vehicle (20). The operation permission control device (22) incorporates a relay inserted in the middle of a start signal line (47) connecting a key switch (46) and vehicle start circuit (48) (starter relay of an engine-powered vehicle or main controller of a battery-powered vehicle) and can open and close the start signal line (47). The operation permission control device (22) reads data of a authentication card (34) carried by the operator, collates the read data with preprogrammed data in a removable set memory a (32). If the data match, the device connects the start signal line (47) to enable start of the vehicle.
    Type: Application
    Filed: July 6, 2006
    Publication date: May 21, 2009
    Applicants: Komatsu Utility Co., Ltd., Komatsu Ltd.
    Inventors: Shigeru Nitta, Hajime Iida, Manabu Uenosono, Takeshi Kurokawa, Shinichiro Okubo, Kazuaki Ohtsuki
  • Patent number: 6713032
    Abstract: A catalyst for removing carbon monoxide (CO) in a hydrogen rich gas according to a water gas shift reaction is provided, which is characterized in that platinum and rhenium are supported on rutile titania as a support. This catalyst provides a high CO conversion at a relatively low reaction temperature between 200° C. and 300° C. and is excellent in cost/performance due to a reduction in amount of supported platinum. It is preferred that a weight ratio of an amount of supported platinum to an amount of supported rhenium is in a range of 3:1 to 1:1, and particularly 3:2. In addition, when the catalyst is produced by supporting rhenium first and then platinum on the support, the catalyst performance can be remarkably improved.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: March 30, 2004
    Assignees: Matsushita Electric Works, Ltd.
    Inventors: Manabu Mizobuchi, Kensaku Kinugawa, Noboru Hashimoto, Akira Igarashi, Hajime Iida
  • Publication number: 20030195115
    Abstract: A catalyst for removing carbon monoxide (CO) in a hydrogen rich gas according to a water gas shift reaction is provided, which is characterized in that platinum and rhenium are supported on rutile titania as a support. This catalyst provides a high CO conversion at a relatively low reaction temperature between 200° C. and 300° C. and is excellent in cost/performance due to a reduction in amount of supported platinum. It is preferred that a weight ratio of an amount of supported platinum to an amount of supported rhenium is in a range of 3:1 to 1:1, and particularly 3:2. In addition, when the catalyst is produced by supporting rhenium first and then platinum on the support, the catalyst performance can be remarkably improved.
    Type: Application
    Filed: May 20, 2002
    Publication date: October 16, 2003
    Applicants: MATSUSHITA ELECTIC WORKS, LTD., Akira Igarashi
    Inventors: Manabu Mizobuchi, Kensaku Kinugawa, Noboru Hashimoto, Akira Igarashi, Hajime Iida
  • Patent number: 4985611
    Abstract: A welding equipment which has an upper frame which moves relative to a fixed lower frame. The movable upper frame has a plurality of upper mounting blocks and a plurality of upper electrode rods respectively mounted on the plurality of upper mounting blocks. The fixed lower frame is oppositely disposed below the movable upper frame, and has a plurality of lower mounting blocks and a plurality of lower electrode rods respectively mounted on the plurality of lower mounting blocks. A welding transformer is mounted on the movable upper frame and has cables operably connected to the upper electrode rods for supplying current thereto. Each of the plurality of upper electrode rods reciprocally moves relative to a respective one of the upper mounting blocks.
    Type: Grant
    Filed: July 13, 1988
    Date of Patent: January 15, 1991
    Assignee: Takao Kinzoku Kogyo Co., Ltd.
    Inventors: Hajime Iida, Tadashi Nakamura
  • Patent number: 4889967
    Abstract: Each electrode rod unit is composed by inserting into a cylindrical block an electrode rod which is linked to the cylindrical block through a conductive cable. The electrode rod unit is removable fastened onto an electrode plate and pipings for both cooling and pushing out each electrode rod and a fluid pressure piping for its retraction are joined to the electrode unit.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: December 26, 1989
    Assignee: Takao Kinzoku Kogyo Co., Ltd.
    Inventors: Hajime Iida, Tadashi Nakamura
  • Patent number: 4589261
    Abstract: A ice making machine having a plurality of novel ice making plates or more preferably cylindrical ice making plates, which is formed to be longitudinal cell type wherein said ice making plates proper can be integrally fabricated by extrusion or drawing of heat conductive material, to have a means of fixing cooling tubing thereto by expanding, to be constructed said ice making plates proper and distance pieces made of heat insulating material being piled up alternately upon each other, to be constructed said cooling tubing being fixed thereto by expanding and thus to be assembled ice making plates having a predetermined size and number of ice cube making chambers therein.
    Type: Grant
    Filed: December 6, 1983
    Date of Patent: May 20, 1986
    Assignee: Daikin Industries, Ltd.
    Inventors: Ryutaro Ohashi, Hisashi Hasegawa, Masao Miyoshi, Hajime Iida, Toshiyuki Mase, Takashi Tanaka, Tsunemasa Funatsu, Tami Nakanishi