Patents by Inventor Kouichi Yamazaki

Kouichi Yamazaki 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: 20240301747
    Abstract: A transport facility includes a guide rail which is disposed along a travel path extending in a travel direction through an opening of a wall and which is configured to guide traveling of a transport vehicle, and a fire door configured to open and close the opening. The fire door is configured to, in closing the opening, move toward a first side in an arrangement direction from an open position to a closed position. The fire door includes a notch penetrating the fire door in the travel direction and open on the first side to prevent the fire door from coming into contact with the first rail body and the second rail body while the fire door is moving from the open position to the closed position.
    Type: Application
    Filed: March 8, 2024
    Publication date: September 12, 2024
    Inventors: Marika Saito, Kouichi Iida, Takafumi Yamazaki
  • Patent number: 12057766
    Abstract: A control unit is provided with a step-down unit which causes a system voltage of each phase of a system to step down, a voltage pulse signal generation unit which generates a voltage pulse signal of each phase that was stepped down by the step-down unit, a current pulse signal generation unit which generates a current pulse signal of each phase of the system, a zero crossing point detection unit which outputs time information of a zero crossing point of the system voltage and the system current of each phase based on the voltage pulse signal and the current pulse signal of each phase of the system, and an arithmetic unit which calculates, respectively, a value of active power and a value of reactive power of AC power output by the power conditioner to the system based on the time information of the zero crossing point of the system voltage and the system current of each phase of the system provided from the zero crossing point detection unit, and thereby controls the power conditioner.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: August 6, 2024
    Assignee: IKS Co., Ltd.
    Inventors: Takamasa Yamazaki, Kouichi Hiraoka, Kazuhito Sasaki, Makoto Miyata, Takashi Imai, Hideaki Abumi, Takao Goto
  • Patent number: 10131973
    Abstract: The present invention provides spring steel used for spring steel wire achieving both high strength and cold coilability and spring steel wire, that is, spring steel containing, by mass %, C: 0.45 to 0.70%, Si: 1.0 to 3.0%, Mn: 0.05 to 2.0%, P: 0.015% or less, S: 0.015% or less, N: 0.0015 to 0.0200%, and t-O: 0.0002 to 0.01 and further limiting Al?0.01% and Ti?0.003%. Further, it is characterized by satisfying the following regarding the cementite-based spherical carbides present at an observed plane, an occupied area ratio of grains with a circle equivalent diameter of 0.2 ?m or more of 7% or less, a density of presence of grains with a circle equivalent diameter of 0.2 to 3 ?m of 1/?m2 or less, and a density of presence of grains with a circle equivalent diameter 3 ?m or more of 0.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: November 20, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Masayuki Hashimura, Hiroshi Hagiwara, Takanori Miyaki, Takayuki Kisu, Kouichi Yamazaki
  • Publication number: 20100028196
    Abstract: The present invention provides a high strength heat treated steel wire for spring having a tensile strength of 2000 MPa or more which is coiled in the cold state and can achieve both sufficient atmospheric strength and coilability and spring steel used for that steel wire, that is, a high strength heat treated steel wire for a spring characterized by comprising, by mass %, C: 0.5 to 0.9%, Si: 1.0 to 3.0%, Mn: 0.1 to 1.5%, Cr: 1.0 to 2.5%, V: over 0.15 to 1.0%, and Al: 0.005% or less, controlling N to 0.007% or less, further containing one or two of Nb: 0.001 to less than 0.01% and Ti: 0.001 to less 0.005%, and having a tensile strength of 2000 MPa or more, having cementite-based spheroidal carbides and alloy-based spheroidal carbides in a microscopic visual field satisfying an area percentage of carbides with a circle equivalent diameter of 0.
    Type: Application
    Filed: November 9, 2006
    Publication date: February 4, 2010
    Inventors: Masayuki Hashimura, Hiroshi Hagiwara, Takayuki Kisu, Kouichi Yamazaki, Tatsuroi Ochi, Takashi Fujita
  • Publication number: 20080279714
    Abstract: The present invention provides spring steel used for spring steel wire achieving both high strength and cold coilability and spring steel wire, that is, spring steel containing, by mass %, C: 0.45 to 0.70%, Si: 1.0 to 3.0%, Mn: 0.05 to 2.0%, P: 0.015% or less, S: 0.015% or less, N: 0.0015 to 0.0200%, and t-O: 0.0002 to 0.01 and further limiting Al?0.01% and Ti?0.003%. Further, it is characterized by satisfying the following regarding the cementite-based spherical carbides present at an observed plane, an occupied area ratio of grains with a circle equivalent diameter of 0.2 ?m or more of 7% or less, a density of presence of grains with a circle equivalent diameter of 0.2 to 3 ?m of 1/?m2 or less, and a density of presence of grains with a circle equivalent diameter 3 ?m or more of 0.
    Type: Application
    Filed: November 30, 2005
    Publication date: November 13, 2008
    Inventors: Masayuki Hashimura, Hiroshi Hagiwara, Takanori Miyaki, Takayuki Kisu, Kouichi Yamazaki
  • Patent number: 6814138
    Abstract: An air conditioning apparatus for an automotive vehicle includes a case having an opening which is formed at a side wall of the case. A heater core is installed in the case; and a mix door assembly detachably is installed in said case through the opening. The mix door assembly is adapted to vary a ratio of quantity of air passing through said heater core to a quantity of air bypassing said heater core. The mix door assembly including a housing, a mix door installed in the housing, and a slide mechanism installed in the housing. The slide mechanism is adapted to receive a rotational force and slide the mix door with respect to the housing according to the received rotational force to vary the ratio.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: November 9, 2004
    Assignee: Calsonic Kansei Corporation
    Inventors: Akihiro Tsurushima, Koji Murayama, Katsuhiro Kurokawa, Noriyuki Kitahara, Kouichi Yamazaki
  • Patent number: 6775418
    Abstract: An image processing device detects the correlation between a pixel to be removed in thinning pixel blocks generated by using a delay in horizontal and vertical directions and an adjacent pixel. The device then determines a coefficient corresponding to the correlation. From the pixel to be removed and the adjacent pixel, pixel data is generated by using a predetermined calculation equation. Thinning and reduction of each pixel block in the horizontal and vertical directions thus occurs.
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: August 10, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Toshiyuki Yamauchi, Kouji Tatsukawa, Kouichi Yamazaki
  • Patent number: 6609563
    Abstract: An air conditioning apparatus for an automotive vehicle includes a heater core and a mix door assembly installed in a case. The mix door assembly is detachably installed in the case through an opening formed at a side wall of the case. The mix door assembly constitutes a housing, a mix door and a slide mechanism. The slide mechanism is arranged to slide the mix door according to a received rotational force so as to vary the ratio of warm air to quantity and cool air quantity.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: August 26, 2003
    Assignee: Calsonic Kansei Corporation
    Inventors: Akihiro Tsurushima, Koji Murayama, Katsuhiro Kurokawa, Noriyuki Kitahara, Kouichi Yamazaki
  • Publication number: 20030145978
    Abstract: An air conditioning apparatus for an automotive vehicle is comprised of a heater core and a mix door assembly installed in a case. The mix door assembly is detachably installed in the case through an opening formed at a side wall of the case. The mix door assembly is constituted by a housing, a mix door and a slide mechanism. The slide mechanism is arranged to slide the mix door according to a received rotational force to vary a ratio of warm air quantity and cool air quantity.
    Type: Application
    Filed: February 19, 2003
    Publication date: August 7, 2003
    Applicant: CALSONIC KANSEI CORPORATION
    Inventors: Akihiro Tsurushima, Koji Murayama, Katsuhiro Kurokawa, Noriyuki Kitahara, Kouichi Yamazaki
  • Patent number: 6442028
    Abstract: An electronic device having a circuit board, a shielding plate disposed thereon and a three-terminal regulator is provided with a heat sink positioned on the outer side of the circuit board and connected to the three-terminal regulator. The heat of three-terminal regulator is radiated from the heat sink, thus making it possible to prevent heating of the shielding plate. In this way, electronic device elements that do not stand up very well to heat, such as an optical pickup unit, can be placed directly on shielding plate, so that the heat of three-terminal regulator is efficiently dissipated and the size of the electronic devices may be reduced.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: August 27, 2002
    Assignee: Sony Computer Entertainment, Inc.
    Inventor: Kouichi Yamazaki
  • Publication number: 20010043462
    Abstract: An electronic device having a circuit board, a shielding plate disposed thereon and a three-terminal regulator is provided with a heat sink positioned on the outer side of the circuit board and connected to the three-terminal regulator. The heat of three-terminal regulator is radiated from the heat sink, thus making it possible to prevent heating of the shielding plate. In this way, electronic device elements that do not stand up very well to heat, such as an optical pickup unit, can be placed directly on shielding plate, so that the heat of three-terminal regulator is efficiently dissipated and the size of the electronic devices may be reduced.
    Type: Application
    Filed: May 3, 2001
    Publication date: November 22, 2001
    Inventor: Kouichi Yamazaki
  • Patent number: 6017225
    Abstract: An integral microphone holder-connector made from a rubbery material is disclosed, which is used in assemblage of a compact electronic instrument such as a portable telephone having a built-in capacitor microphone and which greatly improves the productivity in the mounting work of the microphone and reliability of microphone holding and positioning as well as electrical connection thereof with the mounting circuit board without necessitating soldering. The integral microphone holder-connector consists of a rubber-made microphone holder in the form of a cup for holding a microphone in the cavity thereof and a connector body forming the bottom of the cup-formed microphone holder, the connector body consisting of a rubbery connector base and a plurality of fine metal wires embedded therein in a parallel alignment running in the direction perpendicular to the bottom of the cup-formed microphone holder to extend out of the surfaces of the connector base to serve as the contacting terminals.
    Type: Grant
    Filed: September 2, 1998
    Date of Patent: January 25, 2000
    Assignee: Shin-Etsu Polymer Co., Ltd.
    Inventors: Hajime Michiya, Kouichi Yamazaki
  • Patent number: 5975915
    Abstract: A socket for the inspection of semiconductor devices is disclosed which has laterally extended leads. The device is mounted in a mounting seat of the socket body and results in improvement of the inspection process because difficult steps such as soldering can be omitted. The socket is composed of a socket body which is mountable on a circuit board having a mounting seat therefor, a lead frame intervening between the socket body and the circuit board and an anisotropically electroconductive elastic connector sheet.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: November 2, 1999
    Assignee: Shin-Etsu Polymer Co., Ltd.
    Inventors: Kouichi Yamazaki, Hiroto Komatsu
  • Patent number: 5585896
    Abstract: In an image forming apparatus, a charging member, image transfer member or similar contact member contacts an image carrier implemented as a photoconductive element. Even when a voltage is applied to the contact member in a relatively low temperature environment, the contact member is provided with an adequate charge potential or an image transfer potential.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: December 17, 1996
    Assignee: Ricoh Company, Ltd.
    Inventors: Kouichi Yamazaki, Sadao Takahashi, Nobuo Kikuchi, Kentaro Matsumoto, Tadashi Hayakawa, Yoshiaki Miyashita, Takeshi Tabuchi, Naomi Misago, Hirohisa Otsuka
  • Patent number: 5572293
    Abstract: A system for cleaning a charge inducing member comprising a cleaning element for establishing relative lineal as well as rotary movement between the cleaning element and charge inducing member. Embodiments include various mechanisms for imparting axial reciprocal motion to the cleaning element and for disabling reciprocation of the cleaning element or separating the cleaning element and charging member from each other during sensitive portions of a photoduplication cycle.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: November 5, 1996
    Assignee: Ricoh Company, Ltd.
    Inventors: Nobuo Kikuchi, Kouichi Yamazaki, Sadao Takahashi, Kentaro Matsumoto, Tadashi Hayakawa, Yoshiaki Miyashita, Takeshi Tabuchi, Hirohisa Ohtsuka, Takaaki Tawada
  • Patent number: 5557373
    Abstract: In an image forming apparatus having a charging member for charging a photoconductive element in the form of a drum or a belt in contact therewith, a cleaning member cleans the surface of a charge roller contacting the photoconductive element. The cleaning member is usually spaced apart from the surface of the charge roller, but the former is caused to contact the latter only for a predetermined period of time at predetermined intervals. This frees the charge roller from excessive cleaning due to the cleaning member and, therefore, obviates defective images. The time for causing the cleaning member to contact the charge roller may be changed on the basis of the degree of contamination of the charge roller in order to cope with accidental smears brought about on the charge roller.
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: September 17, 1996
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshiaki Miyashita, Takeshi Tabuchi, Kouichi Yamazaki, Nobuo Kikuchi, Kentaro Matsumoto, Sadao Takahashi, Tadashi Hayakawa
  • Patent number: 5526126
    Abstract: A first reproduced color under signal is delayed by one or two horizontal periods by a delay circuit, and this delayed second reproduced color under signal and the aforementioned first reproduced color under signal have their frequencies converted individually by first and second frequency converters into standard color signals. An oscillatory frequency signals of 2n of carriers for the aforementioned frequency conversions are divided to have the aforementioned carrier frequencies and to produce four carriers having phases of 0, 90, 180 and 270 degrees. These carriers are selectively fed to the first and second frequency converters by switches so that the two frequency-converted signals are subtracted or added in phase or in opposite phase to clear the noise (or crosstalk component), which is caused by the crosstalk between the tracks.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: June 11, 1996
    Assignees: Hitachi, Ltd., Hitachi Tohbu Semiconductor, Ltd., Hitachi Microcomputer System Ltd.
    Inventors: Makoto Furihata, Takashi Jin, Kenya Yamauchi, Shinichi Ishihara, Kouichi Yamazaki
  • Patent number: 5512708
    Abstract: An image forming apparatus includes a photosensitive body. A charge member is held in contact with the photosensitive body and charges the photosensitive body by applying a voltage thereto. An exposure device exposes a surface of the photosensitive body charged by the charge member and forms an electrostatic latent image. A developing device attaches toner to the electrostatic latent image on the photosensitive body and visualizes the electrostatic latent image. Further, a particle diameter of fine powder which is the toner used in the developing device is equal to or less than 3 .mu.m, and a containing rate of the fine powder is equal to or less than 5%. Further, an angle of spatula of the toner used in the developing device may be at least 25 degrees. A cohesiveness of the toner may also be at least 9%.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: April 30, 1996
    Assignee: Ricoh Company, Ltd.
    Inventors: Sadao Takahashi, Kouichi Yamazaki, Nobuo Kikuchi, Kentaro Matsumoto, Tadashi Hayakawa, Yoshiaki Miyashita, Takeshi Tabuchi
  • Patent number: 5500280
    Abstract: An improved elastomer-based connector sheet for use to electrically connect electrode terminals is proposed which comprises, in the form of an integral sheet: (a) a matrix in the form of a sheet made from an electrically insulating rubber having a specified rubber hardness; and (b) a multiplicity of straightly extending wire segments of a metal having a specified volume resistivity and having a diameter in the range from 20 to 90 .mu.m embedded in the matrix of the rubber substantially in parallel each with the others in such a direction that the bias angle formed with the direction perpendicular to the surface of the sheet is in the range from 20.degree. to 60.degree. in such a fashion that each of the wire segments has the ends exposed on the surfaces of the matrix sheet and the distance between the surfaces of adjacent wire segments is at least 10 .mu.m, the distribution density of the ends of the wire segments exposed on the sur-face of the matrix sheet being in the range from 70 to 1000 per mm.sup.2.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: March 19, 1996
    Assignee: Shin-Etsu Polymer Co., Ltd.
    Inventors: Kouichi Yamazaki, Nobuyoshi Ogawa
  • Patent number: 5403194
    Abstract: An improved elastic interconnector is proposed which consists of, different from conventional rubber-made interconnectors having a structure of alternate stratification of insulating rubber layers and electroconductive rubber layers, an insulating block made from a silicone rubber and a plural number of gold-plated fine metal wires embedded therein in a parallel alignment, each end portion of the metallic wires being protruded out of the surface of the insulating rubber block to ensure reliable contacting with electrode terminals.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: April 4, 1995
    Assignee: Shin-Etsu Polymer Co., Ltd.
    Inventor: Kouichi Yamazaki