Patents by Inventor Manabu Tokunaga

Manabu Tokunaga 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: 20210120890
    Abstract: A garment, to which a blower device is detachably attachable, includes a main body and a heat insulation material. The main body includes at least an outer fabric having an attachment hole through which the blower device can be partially inserted. The main body is configured to cover at least a portion of a body of a wearer. The heat insulation material is attached to the main body at least on an inner side of the outer fabric. The heat insulation material is configured to cover at least a portion of the body. The garment is configured such that the heat insulation material is detachable from the main body.
    Type: Application
    Filed: March 8, 2019
    Publication date: April 29, 2021
    Applicants: Makita Corporation, Teijin Limited
    Inventors: Manabu TOKUNAGA, Kazuhiro SAKURAI, Natsumi HARA, Nobuyoshi MIYASAKA
  • Publication number: 20200359715
    Abstract: A garment includes a blower device having an inlet and an outlet, an outer fabric, and an inner fabric attached to the outer fabric. The outer fabric has a mounting part to which the blower device is removably mountable in a state in which the inlet is disposed on an outer side of the outer fabric and the outlet is disposed on the inner fabric side of the outer fabric. The internal space is formed between the outer fabric and the inner fabric. The internal space is configured such that, when the garment is not worn and the blower device delivers the ambient air into the internal space at an air volume Q (cubic meter per minute: m3/min), the air volume Q and an internal pressure P (pascal: Pa) of the internal space satisfy a relationship of P?1.1Q2.
    Type: Application
    Filed: December 26, 2018
    Publication date: November 19, 2020
    Applicants: TEIJIN LIMITED, MAKITA CORPORATION
    Inventors: Manabu TOKUNAGA, Kazuhiro SAKURAI, Nobuyoshi MIYASAKA
  • Patent number: 10169882
    Abstract: Roughly described, a method for estimating a size measurement of a subject feature on a body, for use with a photo, snapped by a camera which may be handheld. A reference marker is placed on the body near the subject feature. The reference marker includes concentric rings to help confirm its identify, and registration markings to determine the pose at which the photo was taken. The registration markings can be dots at vertices of a square. The method can include detecting concentric ellipses in the photo corresponding to the concentric circles, detecting the registration markings in the photo within a predetermined region which is outside the detected ellipses, geometrically transforming at least the subject feature in the photo based on the detected locations of the registration markings, calculating the scale of the photo based on the detected registration markings, and providing the transformed image and scale for the size measurement.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: January 1, 2019
    Assignee: WinguMD, Inc.
    Inventors: Manabu Tokunaga, Jonathan Harman
  • Patent number: 8911320
    Abstract: In a disc grinder, a spindle mounted with a grindstone intersects an output shaft of an electric motor. The disc grinder includes the three-point pressing continuously-variable transmission between the output shaft of the electric motor and a bevel gear train. The bevel gear train is used for deceleration. The traction grease having a high traction coefficient is used as the lubricant of the traction drive. A grease reservoir or felt members arranged in sliding contact with the pressing parts are disposed in the transmission case.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: December 16, 2014
    Assignee: Makita Corporation
    Inventors: Manabu Tokunaga, Akihiro Ito, Shinji Hirabayashi
  • Patent number: 8739417
    Abstract: A circular saw in which cutting speed of a saw blade is smoothly controlled. A speed change mechanism of a circular saw includes first and second rotating shafts disposed parallel to each other, and first and second gear trains having different gear ratios and each having a combination of a drive gear and a driven gear as one unit which are engaged with each other and transmit torque of the first rotating shaft to the second rotating shaft. A torque transmission path via the first gear train is defined as a first power transmission path and a torque transmission path via the second gear train is defined as a second power transmission path, and the transmission path is switched between the first power transmission path and the second power transmission path.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: June 3, 2014
    Assignee: Makita Corporation
    Inventors: Manabu Tokunaga, Shinji Hirabayashi, Ryu Hashimoto
  • Patent number: 8713806
    Abstract: A power tool includes a power source, a speed change mechanism and a tool bit. The speed change mechanism includes first and second rotating shafts disposed parallel to each other, a first power transmission path provided with a first gear train and a first clutch and a second power transmission path provided with a second gear train and a second clutch. The power transmission path is switched between the first power transmission path and the second power transmission path while the first and second gear trains are held engaged, by shifting of the first and second clutches between the power transmission state and the power transmission interrupted state according to a load applied to the tool bit. The speed change mechanism further includes a switching retaining mechanism, a switching preventing mechanism, a switching set value adjusting mechanism or a switching mechanism.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: May 6, 2014
    Assignee: Makita Corporation
    Inventors: Manabu Tokunaga, Shinji Hirabayashi, Ryu Hashimoto
  • Patent number: 8667694
    Abstract: A power tool includes a power source, a speed change mechanism and a tip tool wherein the speed change mechanism has first and second rotating shafts arranged in parallel, a first power transmission passage equipped with a first gear train and a first clutch, and a second power transmission passage equipped with a second gear train and a second clutch. The speed change mechanism is constituted to switch the transmission passage between the first power transmission passage and the second power transmission passage while keeping the first and second gear trains in meshed state by switching the first and second clutches between power transmission state and power interruption state depending on a load applied to the tip tool.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: March 11, 2014
    Assignee: Makita Corporation
    Inventors: Manabu Tokunaga, Ryu Hashimoto
  • Publication number: 20130000938
    Abstract: A hand-held power tool comprises a motor, an output section which is rotationally driven by the motor, and an output change section which changes the output of the output section in a stepless manner while normally driving the motor. The hand-held power tool is improved so that the output of the output section during working can be smoothly controlled.
    Type: Application
    Filed: October 22, 2010
    Publication date: January 3, 2013
    Applicant: MAKITA CORPORATION
    Inventors: Yutaka Matsunaga, Manabu Tokunaga, Shinji Hirabayashi
  • Publication number: 20120165152
    Abstract: In a disc grinder, a spindle mounted with a grindstone intersects an output shaft of an electric motor. The disc grinder includes the three-point pressing continuously-variable transmission between the output shaft of the electric motor and a bevel gear train. The bevel gear train is used for deceleration. The traction grease having a high traction coefficient is used as the lubricant of the traction drive. A grease reservoir or felt members arranged in sliding contact with the pressing parts are disposed in the transmission case.
    Type: Application
    Filed: August 19, 2010
    Publication date: June 28, 2012
    Applicant: MAKITA CORPORATION
    Inventors: Manabu Tokunaga, Akihiro Ito, Shinji Hirabayashi
  • Patent number: 7987922
    Abstract: While a load torque applied to a tool shaft is lower than a predetermined value, a moving member is maintained at a first position, and a sun gear is rotated integrally with an internal gear. When the load torque applied to the tool shaft reaches or exceeds the predetermined value, the moving member is moved to a second position, to thereby prohibit relative rotation of the internal gear and a gear case. A latch member is engaged in a catching portion of the moving member when the moving member is moved to the second position, to thereby prevent the moving member from moving back to the first position. In this manner, repetitive switching between speed reduction ratios can be prevented even when the load torque applied to the tool shaft fluctuates.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: August 2, 2011
    Assignee: Makita Corporation
    Inventor: Manabu Tokunaga
  • Publication number: 20110167651
    Abstract: A circular saw in which cutting speed of a saw blade is smoothly controlled. A speed change mechanism of a circular saw includes first and second rotating shafts disposed parallel to each other, and first and second gear trains having different gear ratios and each having a combination of a drive gear and a driven gear as one unit which are engaged with each other and transmit torque of the first rotating shaft to the second rotating shaft. A torque transmission path via the first gear train is defined as a first power transmission path and a torque transmission path via the second gear train is defined as a second power transmission path, and the transmission path is switched between the first power transmission path and the second power transmission path.
    Type: Application
    Filed: June 9, 2009
    Publication date: July 14, 2011
    Applicant: MAKITA CORPORATION
    Inventors: Manabu Tokunaga, Shinji Hirabayashi, Ryu Hashimoto
  • Publication number: 20110154670
    Abstract: A power tool includes a power source, a speed change mechanism and a tip tool wherein the speed change mechanism has first and second rotating shafts arranged in parallel, a first power transmission passage equipped with a first gear train and a first clutch, and a second power transmission passage equipped with a second gear train and a second clutch. The speed change mechanism is constituted to switch the transmission passage between the first power transmission passage and the second power transmission passage while keeping the first and second gear trains in meshed state by switching the first and second clutches between power transmission state and power interruption state depending on a load applied to the tip tool.
    Type: Application
    Filed: June 9, 2009
    Publication date: June 30, 2011
    Applicant: MAKITA CORPORATION
    Inventors: Manabu Tokunaga, Ryu Hashimoto
  • Publication number: 20110138954
    Abstract: A power tool includes a power source, a speed change mechanism and a tool bit. The speed change mechanism includes first and second rotating shafts disposed parallel to each other, a first power transmission path provided with a first gear train and a first clutch and a second power transmission path provided with a second gear train and a second clutch. The power transmission path is switched between the first power transmission path and the second power transmission path while the first and second gear trains are held engaged, by shifting of the first and second clutches between the power transmission state and the power transmission interrupted state according to a load applied to the tool bit. The speed change mechanism further includes a switching retaining mechanism, a switching preventing mechanism, a switching set value adjusting mechanism or a switching mechanism.
    Type: Application
    Filed: June 9, 2009
    Publication date: June 16, 2011
    Applicant: MAKITA CORPORATION
    Inventors: Manabu Tokunaga, Shinji Hirabayashi, Ryu Hashimoto
  • Patent number: 7882771
    Abstract: A dust-collecting device for collecting cutting chips produced by a cutting device has a separator for separating the cutting chips from the carrier air by utilizing the force of gravity upon the cutting chips. A dust container collects the cutting chips separated by the separator. The separator includes a separator body having a cutting chip discharge pipe and an air discharge pipe. After separation the carrier air is discharged upward from the separator body via the air discharge pipe. The separated cutting chips are discharge downward from the separator body via the cutting chip discharge pipe. The dust container is connected to the cutting chip discharge pipe.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: February 8, 2011
    Assignee: Makita Corporation
    Inventors: Katsuhiko Sasaki, Masahiko Ono, Taiju Tsuboi, Manabu Tokunaga, Shinji Hirabayashi, Toshiyuki Kani, Syuji Aoyama
  • Patent number: 7712546
    Abstract: It is an object of the invention to provide an effective technique for avoiding the influence of reaction during tightening operation in the rotary fastening tool.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: May 11, 2010
    Assignee: Makita Corporation
    Inventor: Manabu Tokunaga
  • Patent number: 7665392
    Abstract: Tightening tools is provided with a pair of clutch members disposed between a motor and a tool bit. The pair of clutch members is provided with a first engaging portion and a second engaging portion. The first engaging portion is constructed so as to disengage the pair of clutch members when the torque applied to the tool bit is equal to or above a first predetermined value. The second engaging portion does not engage the pair of clutch members while the first engaging portion engages the pair of clutch members and the second engaging portion engages the pair of clutch members after the first engaging portion disengages the pair of clutch members. The second engaging portion is constructed so as to disengage the pair of clutch members when the torque applied to the tool bit is equal to or above a second predetermined value. The second predetermined value may be different from the first predetermined value.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: February 23, 2010
    Assignee: Makita Corporation
    Inventors: Manabu Tokunaga, Tomohiro Hachisuka
  • Publication number: 20090249929
    Abstract: A dust-collecting device for collecting cutting chips produced by a cutting device has a separator for separating the cutting chips from the carrier air by utilizing the force of gravity upon the cutting chips. A dust container collects the cutting chips separated by the separator. The separator includes a separator body having a cutting chip discharge pipe and an air discharge pipe. After separation the carrier air is discharged upward from the separator body via the air discharge pipe. The separated cutting chips are discharge downward from the separator body via the cutting chip discharge pipe. The dust container is connected to the cutting chip discharge pipe.
    Type: Application
    Filed: June 8, 2009
    Publication date: October 8, 2009
    Applicant: MAKITA CORPORATION
    Inventors: Katsuhiko Sasaki, Masahiko Ono, Taiju Tsuboi, Manabu Tokunaga, Shinji Hirabayashi, Toshiyuki Kani, Syuji Aoyama
  • Publication number: 20090242226
    Abstract: While a load torque applied to a tool shaft is lower than a predetermined value, a moving member is maintained at a first position, and a sun gear is rotated integrally with an internal gear. When the load torque applied to the tool shaft reaches or exceeds the predetermined value, the moving member is moved to a second position, to thereby prohibit relative rotation of the internal gear and a gear case. A latch member is engaged in a catching portion of the moving member when the moving member is moved to the second position, to thereby prevent the moving member from moving back to the first position. In this manner, repetitive switching between speed reduction ratios can be prevented even when the load torque applied to the tool shaft fluctuates.
    Type: Application
    Filed: March 16, 2009
    Publication date: October 1, 2009
    Applicant: MAKITA CORPORATION
    Inventor: Manabu Tokunaga
  • Patent number: 7559268
    Abstract: A dust-collecting device for collecting cutting chips produced by a cutting device has a separator for separating the cutting chips from the carrier air by utilizing the force of gravity upon the cutting chips. A dust container collects the cutting chips separated by the separator. The separator includes a separator body having a cutting chip discharge pipe and an air discharge pipe. After separation the carrier air is discharged upward from the separator body via the air discharge pipe. The separated cutting chips are discharge downward from the separator body via the cutting chip discharge pipe. The dust container is connected to the cutting chip discharge pipe.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: July 14, 2009
    Assignee: Makita Corporation
    Inventors: Katsuhiko Sasaki, Masahiko Ono, Taiju Tsuboi, Manabu Tokunaga, Shinji Hirabayashi, Toshiyuki Kani, Syuji Aoyama
  • Publication number: 20070221022
    Abstract: It is an object of the invention to provide an effective technique for avoiding the influence of reaction during tightening operation in the rotary fastening tool.
    Type: Application
    Filed: March 2, 2007
    Publication date: September 27, 2007
    Applicant: MAKITA CORPORATION
    Inventor: Manabu Tokunaga