Patents by Inventor Kotaro Kojima

Kotaro Kojima 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).

  • Robot arm
    Patent number: 10173330
    Abstract: A robot arm includes a first member, a second member, an actuator, and a speed reducer. The second member is pivotable relative to the first member about a pivot axis. The actuator is configured to pivotally move the second member relative to the first member about the pivot axis. The speed reducer is configured to couple the actuator to the second member to reduce a rotational speed of the second member relative to an output rotational speed of the actuator. The speed reducer includes a grease chamber in which grease is to be provided. The second member including an air chamber in which air is provided, the air chamber being connected to the grease chamber.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: January 8, 2019
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Kotaro Kojima, Kazunori Yamamoto, Tsuyoshi Ito
  • BATTERY CASE AND ROBOT
    Publication number: 20180175347
    Abstract: A battery case includes: a battery; a circuit board that includes a circuit to protect the battery; a chassis that houses the battery and the circuit board; and a venthole disposed at the chassis to cause gas to pass through. A robot includes: a robot base; arms; and a battery case disposed inside the robot base.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 21, 2018
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Shunichiro NINOMIYA, Kotaro KOJIMA, Kazunori YAMAMOTO, Tsuyoshi ITO
  • ROBOT ARM
    Publication number: 20170028567
    Abstract: A robot arm includes a first member, a second member, an actuator, and a speed reducer. The second member is pivotable relative to the first member about a pivot axis. The actuator is configured to pivotally move the second member relative to the first member about the pivot axis. The speed reducer is configured to couple the actuator to the second member to reduce a rotational speed of the second member relative to an output rotational speed of the actuator. The speed reducer includes a grease chamber in which grease is to be provided. The second member including an air chamber in which air is provided, the air chamber being connected to the grease chamber.
    Type: Application
    Filed: March 17, 2016
    Publication date: February 2, 2017
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Kotaro KOJIMA, Kazunori YAMAMOTO, Tsuyoshi ITO
  • Apparatus for manufacturing an optical disk substrate by injection molding
    Patent number: 5156860
    Abstract: An apparatus for manufacturing an optical disk substrate having a foreign-substances index of not more than 1.times.10.sup.5 .mu.m.sup.2 /g, an optical information-storage medium wherein the substrate has an information-recording layer, includes a cylinder with a liner and a screw coated with TiC and TiN.
    Type: Grant
    Filed: August 5, 1991
    Date of Patent: October 20, 1992
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Kotaro Kojima, Yasumasa Shibata, Toshiki Shojima
  • Optical disk substrate, optical information-storage medium, and process and apparatus for manufacturing the optical disk substrate
    Patent number: 5059461
    Abstract: An optical disk substrate having a foreign-substances index of not more than 1.times.10.sup.5 .mu.m.sup.2 /g, an optical information-storage medium wherein the substrate has an information-recording layer, and a propocess and an apparatus for manufacturing the optical disk substrate.
    Type: Grant
    Filed: January 17, 1990
    Date of Patent: October 22, 1991
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Kotaro Kojima, Yasumasa Shibata, Toshiki Shojima