Patents by Inventor Eiji Nakayama

Eiji Nakayama 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: 20190221788
    Abstract: An object of the invention is to provide a lid for storage battery, an injection molding method of the lid, a storage battery with the lid, and a terminal section for storage battery, which can save trouble of inserting a nut into a cavity portion of a terminal, and can prevent falling of the nut at the time of connection of an external leading wire. In a lid for storage battery in which a terminal section for storage battery 8 made up of a terminal 4 having a cavity portion, a bushing 6, and a conductive portion 7 joining both is insert-molded in a lid made of synthetic resin, and a storage battery with the lid for storage battery, an anchor portion 4T is projected at a location excluding at least a central portion of a bottom portion 4F of the terminal 4, and a nut is inserted into the cavity portion of the terminal to be fixed.
    Type: Application
    Filed: February 12, 2019
    Publication date: July 18, 2019
    Inventors: Shin Osaki, Hiroshi Haruyama, Eiji Hojo, Yasuhide Nakayama
  • Patent number: 10297799
    Abstract: An object of the invention is to provide a lid for storage battery, an injection molding method of the lid, a storage battery with the lid, and a terminal section for storage battery, which can save trouble of inserting a nut into a cavity portion of a terminal, and can prevent falling of the nut at the time of connection of an external leading wire. In a lid for storage battery in which a terminal section for storage battery 8 made up of a terminal 4 having a cavity portion, a bushing 6, and a conductive portion 7 joining both is insert-molded in a lid made of synthetic resin, and a storage battery with the lid for storage battery, an anchor portion 4T is projected at a location excluding at least a central portion of a bottom portion 4F of the terminal 4, and a nut is inserted into the cavity portion of the terminal to be fixed.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: May 21, 2019
    Assignee: GS Yuasa International Ltd.
    Inventors: Shin Osaki, Hiroshi Haruyama, Eiji Hojo, Yasuhide Nakayama
  • Publication number: 20190140567
    Abstract: In order to provide a power supply device capable of supplying power to an electric device, predetermined control of which is performed upon detecting zero crossing, and an electric device which operates by receiving a supply of power from the power supply device, the power supply device 1 includes: a battery pack 10; a plug receptacle 8 for outputting a voltage of the battery pack 10; a switching component 14 disposed on a discharge path connected to the plug receptacle 8 from the battery pack 10; and a control part 13 for controlling the switching component 14. The control part 13 temporarily turns off the switching component 14 at a cycle twice that of a commercial power supply.
    Type: Application
    Filed: March 31, 2017
    Publication date: May 9, 2019
    Applicant: Koki Holdings Co., Ltd.
    Inventors: Hayato YAMAGUCHI, Eiji NAKAYAMA
  • Publication number: 20180175757
    Abstract: To provide a power tool capable of suppressing variations in motor characteristics between external power sources with different voltage while preventing an increase in the size of the power tool. The power tool includes: a motor including a stator on which a plurality of windings are wound and a rotor rotatable relative to the stator; an output unit driven by rotation of the rotor; a power source connection part connectable to an external power source serving as a driving power source of the motor; power source voltage detecting means configured to perform detecting a voltage of the external power source connected to the power source connection part; and connection form changing means configured to perform changing a connection form of the plurality of windings on the basis of the voltage of the external power source.
    Type: Application
    Filed: April 29, 2016
    Publication date: June 21, 2018
    Inventors: Hideyuki Tanimoto, Eiji Nakayama
  • Patent number: 9871349
    Abstract: There is provided a light-emitting element including a laminated structure including a first compound semiconductor layer having a first conductivity type, a second compound semiconductor layer having a second conductivity type different than the first conductivity type, and a third compound semiconductor layer formed between the first and second compound semiconductor layers and including an active layer. A second end surface of the second compound semiconductor layer and a third end surface of the third compound semiconductor layer are formed at respective second and third angles theta2 and theta3 relative to a virtual vertical direction of the laminated structure and satisfy the following relationship: “absolute value of theta3 is equal to or greater than 0 degree and smaller than absolute value of theta2”.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: January 16, 2018
    Assignee: SONY CORPORATION
    Inventors: Kunihiko Tasai, Eiji Nakayama, Yuusuke Nakayama, Shigetaka Tomiya
  • Patent number: 9768713
    Abstract: An electric tool includes a brushless motor and an output part, which is driven by the brushless motor and to which a tip tool is mounted, and a tumbler switch. The tumbler switch applies, to the control unit, a stop signal for stopping the brushless motor at a neutral position, a forward rotation signal for forward rotating the brushless motor by an operation in a first direction, and a reverse rotation signal for reversely rotating the brushless motor by an operation in a second direction.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: September 19, 2017
    Assignee: HITACHI KOKI CO., LTD.
    Inventors: Toshiaki Koizumi, Naoki Tadokoro, Kazutaka Iwata, Eiji Nakayama
  • Patent number: 9654186
    Abstract: A portable terminal includes an antenna, a communication unit, an N-bit counter, and a gain change unit. The communication unit has two modes of an active mode in which the communication unit itself outputs carrier waves and a passive mode in which carrier waves output from another device are used, and is configured to attempt communication through electromagnetic induction by using the antenna with switching between the two modes being alternately made and to communicate without switching between the modes while communication is established. The N-bit counter is configured to output a value which varies by a unit number each time switching to at least one of the two modes is made in the communication unit. The gain change unit is configured to change a gain of a signal received at the antenna by the communication unit in accordance with a value output from the N-bit counter.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: May 16, 2017
    Assignee: KYOCERA Corporation
    Inventor: Eiji Nakayama
  • Publication number: 20160277074
    Abstract: A portable terminal includes an antenna, a communication unit, an N-bit counter, and a gain change unit. The communication unit has two modes of an active mode in which the communication unit itself outputs carrier waves and a passive mode in which carrier waves output from another device are used, and is configured to attempt communication through electromagnetic induction by using the antenna with switching between the two modes being alternately made and to communicate without switching between the modes while communication is established. The N-bit counter is configured to output a value which varies by a unit number each time switching to at least one of the two modes is made in the communication unit. The gain change unit is configured to change a gain of a signal received at the antenna by the communication unit in accordance with a value output from the N-bit counter.
    Type: Application
    Filed: May 27, 2016
    Publication date: September 22, 2016
    Inventor: Eiji NAKAYAMA
  • Publication number: 20160268776
    Abstract: There is provided a light-emitting element including a laminated structure including a first compound semiconductor layer having a first conductivity type, a second compound semiconductor layer having a second conductivity type different than the first conductivity type, and a third compound semiconductor layer formed between the first and second compound semiconductor layers and including an active layer. A second end surface of the second compound semiconductor layer and a third end surface of the third compound semiconductor layer are formed at respective second and third angles theta2 and theta3 relative to a virtual vertical direction of the laminated structure and satisfy the following relationship: “absolute value of theta3 is equal to or greater than 0 degree and smaller than absolute value of theta2”.
    Type: Application
    Filed: November 10, 2014
    Publication date: September 15, 2016
    Inventors: KUNIHIKO TASAI, EIJI NAKAYAMA, YUUSUKE NAKAYAMA, SHIGETAKA TOMIYA
  • Publication number: 20160204718
    Abstract: An electric tool includes a brushless motor and an output part, which is driven by the brushless motor and to which a tip tool is mounted, and a tumbler switch. The tumbler switch applies, to the control unit, a stop signal for stopping the brushless motor at a neutral position, a forward rotation signal for forward rotating the brushless motor by an operation in a first direction, and a reverse rotation signal for reversely rotating the brushless motor by an operation in a second direction.
    Type: Application
    Filed: August 26, 2014
    Publication date: July 14, 2016
    Inventors: Toshiaki Koizumi, Naoki Tadokoro, Kazutaka Iwata, Eiji Nakayama
  • Patent number: 9284647
    Abstract: A sliding surface of a high-temperature portion is subjected to an electro-discharge surface treatment with one or both of a high-temperature hard material (4) and a material having a lubricating property at a high temperature (6). The high-temperature hard material (4) is any or a mixture of cBN, TiC, TiN, TiAlN, TiB2, WC, Cr3C2, SiC, ZrC, VC, B4C, Si3N4, ZrO2, and Al2O3. The material having the lubricating property at the high temperature (6) contains chromium and/or chromium oxide (Cr2O3) and/or hexaboron nitride (hBN). An electrode formed by compression molding of the high-temperature hard material, and the high-temperature lubricating material containing at least one of Cr and hBN and having the lubricating property at the high temperature is used as the electrode for the electro-discharge surface treatment.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: March 15, 2016
    Assignees: MITSUBISHI DENKI KABUSHIKI KAISHA, IHI CORPORATION
    Inventors: Hiroyuki Ochiai, Mitsutoshi Watanabe, Mikiya Arai, Shigeru Saburi, Eiji Nakayama, Akihiro Goto, Masao Akiyoshi
  • Patent number: 9187831
    Abstract: A sliding surface of a high-temperature portion is subjected to an electro-discharge surface treatment with one or both of a high-temperature hard material (4) and a material having a lubricating property at a high temperature (6). The high-temperature hard material (4) is any or a mixture of cBN, TiC, TiN, TiAlN, TiB2, WC, Cr3C2, SiC, ZrC, VC, B4C, Si3N4, ZrO2, and Al2O3. The material having the lubricating property at the high temperature (6) contains chromium and/or chromium oxide (Cr2O3) and/or hexaboron nitride (hBN). An electrode formed by compression molding of the high-temperature hard material, and the high-temperature lubricating material containing at least one of Cr and hBN and having the lubricating property at the high temperature is used as the electrode for the electro-discharge surface treatment.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: November 17, 2015
    Assignees: ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES CO., LTD., MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Hiroyuki Ochiai, Mitsutoshi Watanabe, Mikiya Arai, Shigeru Saburi, Eiji Nakayama, Akihiro Goto, Masao Akiyoshi
  • Patent number: 9179744
    Abstract: Provided is a fastener that can be recycled as paper. The fastener includes a tape member and an engaging element attached to the tape member, and the total weight of the cellulose fibers included in the tape member and the engaging element is 51 to 100 wt % of the total weight of the tape member and the engaging element.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: November 10, 2015
    Assignee: YKK Corporation
    Inventors: Go Takani, Eiji Nakayama, Mitsuo Tsuzuyama
  • Patent number: 9065155
    Abstract: When a battery pack having an output voltage of 14.4 V that is connectable to an electric tool in a sliding manner is used as a power supply source for the electric tool that is connectable to a battery pack in an insertion manner and has a rated voltage of 12 V, the electric tool and the battery pack are connected to each other with an adaptor interposed therebetween. The adaptor has an FET that is switched at a predetermined duty of a predetermined frequency. The battery pack and the electric tool are connected or disconnected to or from each other by the switching operation, thereby dropping the output voltage of the battery pack. When the detected voltage is out of a predetermined value range, it is judged that the overcurrent or overdischarge has occurred. Then, the FET is turned off to stop the electric tool.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: June 23, 2015
    Assignee: HITACHI KOKI CO., LTD.
    Inventors: Nobuhiro Takano, Yoshikazu Kawano, Kazuhiko Funabashi, Yuuichi Konuma, Masateru Niyada, Chikai Yoshimizu, Eiji Nakayama, Kenro Ishimaru
  • Patent number: 8896002
    Abstract: A method for producing a semiconductor laser having an edge window structure includes the steps of forming masks of insulating films on a nitride-based III-V compound semiconductor substrate including first regions and second regions periodically arranged in parallel therebetween; and growing a nitride-based III-V compound semiconductor layer in a region not covered by the masks. The first region between each two adjacent second regions has two or more positions, symmetrical with respect to a center line thereof, where laser stripes are to be formed. The masks are formed on one or both sides of each of the positions where the laser stripes are to be formed at least near a position where edge window structures are to be formed such that the masks are symmetrical with respect to the center line. The nitride-based III-V compound semiconductor layer includes an active layer containing at least indium and gallium.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: November 25, 2014
    Assignee: Sony Corporation
    Inventors: Rintaro Koda, Masaru Kuramoto, Eiji Nakayama, Tsuyoshi Fujimoto
  • Patent number: 8822975
    Abstract: A method of manufacturing a semiconductor laser having an end face window structure, by growing over a substrate a nitride type Group III-V compound semiconductor layer including an active layer including a nitride type Group III-V compound semiconductor containing at least In and Ga, the method includes the steps of: forming a mask including an insulating film over the substrate, at least in the vicinity of the position of forming the end face window structure; and growing the nitride type Group III-V compound semiconductor layer including the active layer over a part, not covered with the mask, of the substrate.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: September 2, 2014
    Assignee: Sony Corporation
    Inventors: Masaru Kuramoto, Eiji Nakayama, Yoshitsugu Ohizumi
  • Patent number: 8797895
    Abstract: Provided is a radio relay station which relays data transmitted and received by a radio base station a radio terminal in a radio communication system which employs the TDD scheme. The radio relay station receives data from the radio base station during a downlink subframe period and transmits data to the radio base station during an uplink subframe period. The radio relay station sets a remote side transmission period for transmitting data to the radio terminal in the uplink subframe period and sets a remote side reception period for receiving data from the radio terminal in the downlink subframe period.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: August 5, 2014
    Assignee: KYOCERA Corporation
    Inventors: Takashi Baba, Nobuo Kuchiki, Akira Ishida, Hiroshi Watanabe, Eiji Nakayama
  • Patent number: 8686675
    Abstract: According to an aspect of the present invention, there is provided a power tool including: a motor; a switching device that switches over, in response to a conduction angle thereof, an AC voltage to be applied to the motor; a rotation speed setting unit that sets a target rotation speed of the motor; a rotation speed detection unit that detects an actual rotation speed of the motor; and a controller that determines the conduction angle by comparing the actual rotation speed with the target rotation speed and that controls the switching device by use of the conduction angle based on a maximum conduction angle, the maximum conduction angle being set in accordance with the target rotation speed.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: April 1, 2014
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshikazu Kawano, Nobihiro Takano, Eiji Nakayama, Kenro Ishimaru, Kazumi Tanaka, Masahiro Isono
  • Patent number: 8582495
    Abstract: A relay station 130 includes a terminal communication unit 354 which performs radio communication with a base station 120, a base station communication unit which performs radio communication with one or more radio communication terminals, and a data rearrangement unit which rearranges communication data included in a communication band allocated to the radio communication terminal to a communication band allocated to the base station, and rearranges communication data included in a communication band allocated to the base station to a communication band allocated to the radio communication terminal (FIG. 5).
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: November 12, 2013
    Assignee: Kyocera Corporation
    Inventors: Takayasu Ninagawa, Eiji Nakayama
  • Patent number: 8530255
    Abstract: A method of manufacturing a semiconductor laser having an end face window structure, by growing over a substrate a nitride type Group III-V compound semiconductor layer including an active layer including a nitride type Group III-V compound semiconductor containing at least In and Ga. The method includes the steps of forming a mask including an insulating film over the substrate, at least in the vicinity of the position of forming the end face window structure; and growing the nitride type Group III-V compound semiconductor layer including the active layer over a part, not covered with the mask, of the substrate.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: September 10, 2013
    Assignee: Sony Corporation
    Inventors: Masaru Kuramoto, Eiji Nakayama, Yoshitsugu Ohizumi, Tsuyoshi Fujimoto