Patents by Inventor Tatsuya Yoshida

Tatsuya Yoshida 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).

  • Patent number: 6782921
    Abstract: A high-strength steel pipe excellent in formability and burst resistance wherein, when a high-strength steel pipe exceeding 850 N/mm2 in tensile strength is produced by a UOE method, a ratio (R/r) of an average radius of curvature in a range of 120 mm in a circumferential direction including a weld of the steel pipe before pipe expansion in a pipe expansion process (R) to the radius of the steel pipe after pipe expansion (r) is 0.65 to 2.0, and preferably the ratio (R/r) is 0.90 to 2.0. Preferably, Vickers hardness of the base metal Hv, the minimum Vickers hardness at the HAZ Hz, pipe wall thickness t, and a peaking amount at the weld of the steel pipe before pipe expansion in a pipe expansion process &dgr; satisfy the following expression, (1+0.005t|&dgr;|)Hz<0.03584Hv2−25.34Hv+4712.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: August 31, 2004
    Assignee: Nippon Steel Corporation
    Inventors: Eiji Tsuru, Takuya Hara, Hitoshi Asahi, Hideki Miyazaki, Tatsuya Yoshida
  • Patent number: 6769521
    Abstract: A power supply line is wired in a loop from a battery power supply, and a power supply relay circuit is installed intermediately of the power supply line such that power is supplied from the power supply relay circuit to an electric load connected to a terminal unit of an intensive wiring line. By this arrangement, not only wires for control signal but also wires for power supply can be reduced. The terminal unit may serve also as the power supply relay circuit.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: August 3, 2004
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Hiroyuki Saito, Tatsuya Yoshida, Shinichi Sakamoto, Mitsuru Koni, Kiyoshi Horibe
  • Publication number: 20040107577
    Abstract: Manufacturing method enabling optimal volume oil-fill even where differing from bearing to bearing due to machining fluctuations in volume-production dynamic pressure bearings. In a first charging method, injection of oil is divided into two cycles. The first is carried out under reduced pressure, following which the pressure is raised a predetermined amount to force the oil into the bearing gap. The oil-fill status is thereupon checked, the shortage is reckoned, and in the second cycle the shortage is injected. In a second charging method, in a first cycle a surplus volume is injected under reduced pressure and the pressure is raised a predetermined amount to force the oil into the bearing gap. Following that, what is in excess of the appropriate amount is removed from the bearing. The first cycle of injection and the pressure elevation may be implemented multiple times, in between which repeat pressure-reduction can be carried out.
    Type: Application
    Filed: October 29, 2003
    Publication date: June 10, 2004
    Applicant: Nidec Corporation
    Inventors: Hiroyuki Hayashi, Tatsuya Yoshida, Yuzo Suzuki, Toshihiro Kimura
  • Publication number: 20040030969
    Abstract: It is an object of the present invention to accurately extract all failures occurring in a unit as hard signals and use the hard signals to completely cut off the faulty unit's communications for the purpose of maintaining the communications among the other units.
    Type: Application
    Filed: May 13, 2003
    Publication date: February 12, 2004
    Inventors: Yuichi Kuramochi, Toshio Manaka, Hiroyuki Saito, Tatsuya Yoshida
  • Publication number: 20030195691
    Abstract: A vehicle cruise control apparatus is provided for controlling a vehicle to run at a set speed desired by a driver. The apparatus stores a state in which the driver inputs a set speed (for example, the number of times the driver inputs the set speeds and a period at which the driver inputs the set speeds), and calculates a target acceleration/deceleration from the input state and a vehicle speed deviation (calculated by subtracting the actual vehicle speed from the set speed).
    Type: Application
    Filed: April 10, 2003
    Publication date: October 16, 2003
    Applicants: HITACHI, LTD., HITACHI CAR ENGINEERING CO., LTD.
    Inventors: Yasufumi Konishi, Taisetsu Tanimichi, Tatsuya Yoshida, Toshio Manaka, Hidefumi Adachi, Eiichiro Kondo
  • Publication number: 20030098211
    Abstract: A power supply line is wired in a loop from a battery power supply, and a power supply relay circuit is installed intermediately of the power supply line such that power is supplied from the power supply relay circuit to an electric load connected to a terminal unit of an intensive wiring line. By this arrangement, not only wires for control signals but also wires for power supply can be reduced. The terminal unit may serve also as the power supply relay circuit.
    Type: Application
    Filed: April 25, 2002
    Publication date: May 29, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Hiroyuki Saito, Tatsuya Yoshida, Shinichi Sakamoto, Mitsuru Koni, Kiyoshi Horibe
  • Publication number: 20030075980
    Abstract: An electric power line is wired with a loop shape and from this electric power line a power supply for a load is supplied, and according to another system against this electric power line, a control system power supply is supplied. One shutdown means is provided in a module which is connected to the loop shape power supply supplying line, when the electric power line and the load become a short, by separating using the shutdown means, only a fail point can be separated. Further, during a sleep time, by stopping the power supply supplying to the load, a consumption current can be restrained. According to a detection a ground short and a fail on a connection of a connector, an over-current prevention of an electric power line a simple construction can be improved and a low consumption current can be realized.
    Type: Application
    Filed: July 2, 1999
    Publication date: April 24, 2003
    Inventors: TATSUYA YOSHIDA, HIROYUKI SAITO, SHINICHI SAKAMOTO, MITSURU KON-I, YUICHI KURAMOCHI, KANEYUKI OKAMOTO, ICHIRO OHSAKA, KIYOSHI HORIBE
  • Patent number: 6534883
    Abstract: The electric power breaker for breaking the electric power is placed on the midpoint of the electric power line from the battery power supply, and the electric power line is extracted from the electric power breaker. In addition, the electric power supply terminal is placed on the midpoint on the electric power line, from which the electric power is supplied to the individual electric load. The electric power distribution and the electric power supply operation to the electric loads are controlled by the multiplex communication. A semiconductor device having a self protection function is used as the switching device for supplying the electric power. The electric power line covered by the electric conductive material is arranged in a loop topology so as to start from the connection point to the battery and pass through the designated positions in the vehicle and return to the battery.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: March 18, 2003
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Tatsuya Yoshida, Hiroyuki Saito, Shinichi Sakamoto, Mitsuru Koni, Kiyoshi Horibe
  • Patent number: 6528899
    Abstract: A battery is disposed at the portion beneath the rear seat of a vehicle. The positive electrode of the battery is connected through a power bus for power supply to a rear junction block (R-JB). A rear integration module (RIM) can be coupled to the R-JB through a plug-in operation. The positive electrode of the battery is also connected through a power bus to an under dash junction block (UD-JB). A body control module (BCM) can be coupled to the UD-JB through a plug-in operation. The power bus connection terminal of the UD-JB is connected to a fuse relay block (F-JB) through a power bus. A front integration module (FIM) can be coupled to the F-JB through a plug-in operation. The power bus connection terminal of the F-JB is connected to a starter motor through a power supply line and further connected to an alternator through a power supply line from the starter.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: March 4, 2003
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Hiroyuki Saito, Mitsuru Koni, Yuichi Kuramochi, Tatsuya Yoshida
  • Patent number: 6507994
    Abstract: A parts-mass compressing device includes a base stand having a table structure on which a mass of vertically standing raised workpieces are disposed. A stopper plate is fixed to one end of said table structure and a moving plate is movable toward and away from said stopper plate. Movement of the moving plate toward said stopper plate compresses the mass. A toggle mechanism drives the moving plate and has first and second toggle links which are pivotally connected at their inner ends. The inner ends are connected to a power cylinder.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: January 21, 2003
    Assignee: Calsonic Kansei Corporation
    Inventors: Tatsuya Yoshida, Takahiro Ueda, Takahiro Sakamoto
  • Publication number: 20030001434
    Abstract: A power supply line is wired in a loop from a battery power supply, and a power supply relay circuit is installed intermediately of the power supply line such that power is supplied from the power supply relay circuit to an electric load connected to a terminal unit of an intensive wiring line. By this arrangement, not only wires for control signals but also wires for power supply can be reduced. The terminal unit may serve also as the power supply relay circuit.
    Type: Application
    Filed: April 25, 2002
    Publication date: January 2, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Hiroyuki Saito, Tatsuya Yoshida, Shinichi Sakamoto, Mitsuru Koni, Kiyoshi Horibe
  • Patent number: 6479973
    Abstract: A power supply line is wired in a loop from a battery power supply, and a power supply relay circuit is installed intermediately of the power supply line such that power is supplied from the power supply relay circuit to an electric load connected to a terminal unit of an intensive wiring line. By this arrangement, not only wires for control signals but also wires for power supply can be reduced. The terminal unit may serve also as the power supply relay circuit.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: November 12, 2002
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Hiroyuki Saito, Tatsuya Yoshida, Shinichi Sakamoto, Mitsuru Koni, Kiyoshi Horibe
  • Publication number: 20020113492
    Abstract: An electrical power supply system for a vehicle is provided, which can eliminate proliferation of adverse effect on other control modules caused within one of a plurality of control modules. This is accomplished by provision of the power supply system comprising: battery 10 for supplying power; power line PL in a loop lay-out; a plurality of control modules BCM 100, VCM 110, FIM 120, DDM 130, RIM 140, CCM 150 and PDM 160 for a plurality of accessory systems, which are connected via said power line PL in loop lay-out, wherein a power control module (PCM) 20 for controlling the engine is connected to the power supply source via another power line 22 different from the power line PL.
    Type: Application
    Filed: April 9, 2002
    Publication date: August 22, 2002
    Applicant: Hitachi, Ltd.
    Inventors: Shinichi Sakamoto, Tatsuya Yoshida, Mitsuru Koni, Hiroyuki Saito, Kiyoshi Horibe
  • Patent number: 6430807
    Abstract: As means for handling elongate and flat workpieces flowing in a manufacturing line, three handling devices are provided. First one is a workpiece transmitting device which functions to push down, one after another, the frontmost one of a mass of raised workpieces horizontally put on a table structure. Second one is a parts-mass compressing device which compresses a mass of raised workpieces horizontally put on a table structure to a desired smaller size by using moving and fixed plates. Third one is an assembling device which connects a header pipe to each side of a compressed mass of raised workpieces horizontally put on a table structure.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: August 13, 2002
    Assignee: Calsonic Kansei Corporation
    Inventors: Tatsuya Yoshida, Takahiro Ueda, Takahiro Sakamoto
  • Patent number: 6426797
    Abstract: A print data output circuit for outputting bitmap data for printing based on character codes is provided with: a data memory for storing character codes to be printed; a bitmap data memory for storing bitmap data corresponding to the character codes stored in the data memory; a clock generator that generates a predetermined clock signal; a counter unit that generates first address data of the data memory, a character code stored at the first address of the data memory being read out of the data memory, second address data of the bitmap data memory being generated in accordance with the clock signal and the character codes corresponding to the first address data, bit map data stored at the second address of the bitmap memory being output therefrom; and a parallel-to-serial converter that converts bitmap data stored in the bitmap data memory and corresponding to the second address data to serial data for printing.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: July 30, 2002
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventor: Tatsuya Yoshida
  • Publication number: 20020094732
    Abstract: An exhaust system for a watercraft includes a water trap arranged on a first side of a hull tunnel, a discharge port arranged on a second side of the hull tunnel, and a chamber branched from and communicating with an exhaust passage connecting the watertrap with the discharge port.
    Type: Application
    Filed: April 27, 2001
    Publication date: July 18, 2002
    Inventors: Tatsuya Yoshida, Tadatsugu Yamamura
  • Patent number: 6420799
    Abstract: An electrical power supply system for a vehicle is provided, which can eliminate proliferation of adverse effect on other control modules caused within one of a plurality of control modules. This is accomplished by provision of the power supply system comprising: battery 10 for supplying power; power line PL in a loop lay-out; a plurality of control modules BCM 100, VCM 110, FIM 120, DDM 130, RIM 140, CCM 150 and PDM 160 for a plurality of accessory systems, which are connected via said power line PL in loop lay-out, wherein a power control module (PCM) 20 for controlling the engine is connected to the power supply source via another power line 22 different from the power line PL.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: July 16, 2002
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Shinichi Sakamoto, Tatsuya Yoshida, Mitsuru Koni, Hiroyuki Saito, Kiyoshi Horibe
  • Patent number: 6408998
    Abstract: A power supply line is wired in a loop from a battery power supply, and a power supply relay circuit is installed intermediately of the power supply line such that power is supplied form the power supply relay circuit to an electric load connected to a terminal unit of an intensive wiring line. By this arrangement, not only wires for control signals but also wires for power supply can be reduced. The terminal unit may serve also as the power supply relay circuit.
    Type: Grant
    Filed: April 24, 2001
    Date of Patent: June 25, 2002
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Hiroyuki Saito, Tatsuya Yoshida, Shinichi Sakamoto, Mitsuru Koni, Kiyoshi Horibe
  • Patent number: 6401891
    Abstract: A power supply line is wired in a loop from a battery power supply, and a supply relay circuit is installed intermediatly of the power supply line such that power is supplied from the supply relay circuit to an electric load connected to a terminal unit of an intensive wiring line. By this arrangement, not only wires for control signals but also wires for power supply can be reduced. The terminal unit may serve also as the power supply relay circuit.
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: June 11, 2002
    Assignees: Hitachi, Ltd., Hitachi Car Engineering, Co.,Ltd.
    Inventors: Hiroyuki Saito, Tatsuya Yoshida, Shinichi Sakamoto, Mitsuru Koni, Kiyoshi Horibe
  • Patent number: RE38338
    Abstract: A car remote control system utilizing a signal in the form of electromagnetic wave or infrared ray called ‘keyless entry’. When receiving a predetermined wake-up signal, an MPU is once operated even when the received input signal is a noise signal to perform only judging operation of whether or not the input signal is normal. Only when judging that the input signal is a normal wake-up signal, the MPU controllably causes an electronic circuit to be shifted to a usual operation mode. When judging that the input signal is the noise signal prior to full input of the tuner signal, the MPU immediately shifts to a sleep mode. Thereby current consumption of an electronic control circuit can be suppressed.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: December 2, 2003
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Tatsuya Yoshida, Mitsuru Kon'i