Patents by Inventor Junya Ishikawa

Junya Ishikawa 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: 10478943
    Abstract: A grinder (100) includes a motor (12), a housing (4, 6, 30), a spindle (24), a first cover (120), and a second cover (170). The spindle protrudes downward from the housing, is driven by the motor, and thereby rotates. The first cover is provided in the circumferential direction of the spindle, is fixed to the housing, and at least partially covers a tool accessory (40), which is mounted on the spindle, from above. The second cover is detachably mounted on the housing (6) independently of the first cover.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: November 19, 2019
    Assignee: MAKITA CORPORATION
    Inventors: Shin Nakamura, Takafumi Kotsuji, Ken Goto, Akira Mizutani, Junya Ishikawa
  • Patent number: 10286516
    Abstract: A polisher may include a polishing pad, a motor, a transmission device, and a mode selection device. The transmission device can transmit a rotational drive force of the motor to the polishing pad in a plurality of different modes with respect to a motion of the polishing pad. The mode selection device may be used for selecting a desired motion mode of the output member. Additionally, a motor and handle housing with an accompanying power cord may be constructed to aid in ease of manipulation of the polisher by the user with minimal interference.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: May 14, 2019
    Assignee: MAKITA CORPORATION
    Inventors: Junya Ishikawa, Satoshi Ninagawa
  • Publication number: 20190070705
    Abstract: In an angle electric power tool 1 in which an output axis P intersects and is orthogonal to a motor axis J, a battery attachment portion 40 is provided to the rear of a grip 30 so as to extend in the rearward direction and a battery pack 50 is configured to be attached to an upper surface of said battery attachment portion 40. Because of this configuration, the battery pack 50 does not directly come into contact with a working surface W, thereby preventing flaws and scratches on the working surface W.
    Type: Application
    Filed: August 28, 2018
    Publication date: March 7, 2019
    Applicant: MAKITA CORPORATION
    Inventor: Junya ISHIKAWA
  • Publication number: 20190047115
    Abstract: An electric power tool, for example, a polisher 1 includes a tip end tool 67a, an output shaft 65 extending in a direction perpendicular to a work surface, a main body housing 2 extending in a direction perpendicular to the output shaft 65, a motor 30 housed in the main body housing 2, and an electric circuit board 35 disposed parallel to the motor 30 in an direction in which the main body housing 2 extends.
    Type: Application
    Filed: July 30, 2018
    Publication date: February 14, 2019
    Applicant: MAKITA CORPORATION
    Inventors: Shin NAKAMURA, Akira MIZUTANI, Junya ISHIKAWA
  • Publication number: 20180361536
    Abstract: A grinder may include a motor; a spindle to which a grinding wheel is attached; bevel gears configured to transmit rotation of the motor to the spindle; a motor housing which houses the motor; a gear housing attached to a front side of the motor housing and housing the bevel gears; a spindle case attached to a lower side of the gear housing and rotatably supporting the spindle; a wheel cover attached to the spindle case and covering an outside of at least a part of the grinding wheel; and a stopper configured to prohibit removal of the wheel cover, wherein the stopper may be fastened together with the spindle case by a screw which fastens the spindle case to the gear housing.
    Type: Application
    Filed: June 5, 2018
    Publication date: December 20, 2018
    Applicant: MAKITA CORPORATION
    Inventors: Hideharu MUTO, Junya ISHIKAWA
  • Publication number: 20180281146
    Abstract: A grinder according to one aspect of the present disclosure includes a motor, a housing for housing the motor, a spindle protruding from the housing and configured to be driven to be rotated by the motor, a wheel cover configured to cover a part of a tip end tool attached to the spindle, a detector configured to detect the wheel cover, and a controller configured to stop or restrict the spindle being driven by the motor in response to non-detection of the wheel cover by the detector.
    Type: Application
    Filed: September 23, 2016
    Publication date: October 4, 2018
    Applicant: MAKITA CORPORATION
    Inventors: Akira TOMONAGA, Katsuhito FUJINAMI, Ryo IMUTA, Masatoshi NAKAHAMA, Akira MIZUTANI, Takahiro KAWAKAMI, Hideharu MUTO, Junya ISHIKAWA, Ken GOTO
  • Publication number: 20170106491
    Abstract: A polisher may include a polishing pad, a motor, a transmission device, and a mode selection device. The transmission device can transmit a rotational drive force of the motor to the polishing pad in a plurality of different modes with respect to a motion of the polishing pad. The mode selection device may be used for selecting a desired motion mode of the output member. Additionally, a motor and handle housing with an accompanying power cord may be constructed to aid in ease of manipulation of the polisher by the user with minimal interference.
    Type: Application
    Filed: October 6, 2016
    Publication date: April 20, 2017
    Applicant: MAKITA CORPORATION
    Inventors: Junya ISHIKAWA, Satoshi NINAGAWA
  • Publication number: 20170099018
    Abstract: An electric power tool includes a relay, an electric circuit, and an operation member. The relay has a coil, contacts, and an on-switch. The relay is configured such that the coil is energized when contacts are closed by an on-switch being pressed, and contacts are held in a closed state by an electromagnetic force of coil when coil is energized. In the electric circuit, electric power from power source is supplied to motor and coil of relay, and contacts are connected in series between power source and motor. The operation member is configured to move in reciprocating manner between tool stop position at which the motor stops and tool drive position which the motor runs, where the operation member is configured to locate away from on-switch of the relay at the tool drive position and configured to press the on-switch at a position other than tool drive position.
    Type: Application
    Filed: September 14, 2016
    Publication date: April 6, 2017
    Applicant: MAKITA CORPORATION
    Inventors: Akira TOMONAGA, Masanori FURUSAWA, Junya ISHIKAWA
  • Publication number: 20170072534
    Abstract: A grinder (100) includes a motor (12), a housing (4, 6, 30), a spindle (24), a first cover (120), and a second cover (170). The spindle protrudes downward from the housing, is driven by the motor, and thereby rotates. The first cover is provided in the circumferential direction of the spindle, is fixed to the housing, and at least partially covers a tool accessory (40), which is mounted on the spindle, from above. The second cover is detachably mounted on the housing (6) independently of the first cover.
    Type: Application
    Filed: September 7, 2016
    Publication date: March 16, 2017
    Inventors: Shin NAKAMURA, Takafumi KOTSUJI, Ken GOTO, Akira MIZUTANI, Junya ISHIKAWA
  • Publication number: 20150216756
    Abstract: To wear and remove an assist instrument has been difficult because a user has to wear or remove the assist instrument on or from her/his body in a state that an elastic member is contracted. An assist instrument comprises: a wearing-removal member that is placed wearably and removably on a body of a user; an assist unit that is provided to the wearing-removal member, and assists muscular strength of the user by an action of at least one of extension and contraction by power supply; a control unit that controls an action of the assist unit; and an adjusting means that adjusts constriction of the body by the wearing-removal member at a time of at least one of wearing and detachment of the wearing-removal member.
    Type: Application
    Filed: April 17, 2015
    Publication date: August 6, 2015
    Inventors: MASAYA YAMAMOTO, MIKIO OWASHI, YUSUKE MORINO, JUNYA ISHIKAWA
  • Patent number: 6408132
    Abstract: A photo-sticker vending machine is described that allows a user to purchase a photo-sticker by inserting money into and operating the photo-sticker vending machine. The photo-sticker vending machine includes a printing image data memory for storing image data, a printer for printing image data on a photo-sticker sheet, a first controller for controlling the printer, a cutting data memory for storing cutting data, a cutting device for cutting the photo-sticker sheet to a predetermined shape, and a second controller for controlling the cutting device. The first controller commands the printer to print on the photo-sticker sheet based on the printing image data stored in the printing image data memory. The second controller commands the cutting device to cut the printed photo-sticker sheet based on the cutting data stored in the cutting data memory.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: June 18, 2002
    Assignee: Ohiragiken Industry Co., Ltd.
    Inventor: Junya Ishikawa
  • Patent number: D863013
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: October 15, 2019
    Assignee: MAKITA CORPORATION
    Inventors: Tomonori Kawase, Junya Ishikawa