Patents by Inventor Tomohiro Hachisuka

Tomohiro Hachisuka 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: 11788526
    Abstract: An air compressor comprises a compressor that compresses introduced air and a tank that stores the compressed air generated by the compressor. The air compressor also comprises a discharge pipe from which the compressed air and a condensate in the tank are discharged to an outside of the tank. The air compressor also comprises a drain cock that is disposed in a passage of the discharge pipe and serves to open and close the discharge pipe. The air compressor also comprises a discharge pipe end portion that includes a discharge port facing upward at a tip end of the discharge pipe. The air compressor also comprises a tubular cover including a top portion that covers the discharge pipe end portion from above.
    Type: Grant
    Filed: June 9, 2022
    Date of Patent: October 17, 2023
    Assignee: MAKITA CORPORATION
    Inventors: Noriyuki Nishido, Tomohiro Hachisuka, Makito Teramoto
  • Publication number: 20230151803
    Abstract: An air compressor improves the dustproof performance of an intake path to a crankcase. The air compressor includes a compression assembly that reciprocates a piston in a cylinder to produce compressed air, a crankcase accommodating the compression assembly and having an inner inlet to allow outside air to be drawn, a filter located in the crankcase and covering the inner inlet from outside, a filter cover having an outer inlet and covering the filter from outside, and a dust cover covering the filter cover from outside, covering the outer inlet, and including an outer circumferential portion. The outer circumference portion and the filter cover have a space to draw outside air between the outer circumference portion and the filter cover.
    Type: Application
    Filed: September 20, 2022
    Publication date: May 18, 2023
    Applicant: MAKITA CORPORATION
    Inventors: Toshiro HIRAYAMA, Noriyuki NISHIDO, Tomohiro HACHISUKA, Yasutoshi KUROKAWA, Makito TERAMOTO
  • Publication number: 20230038911
    Abstract: An air compressor comprises a compressor that compresses introduced air and a tank that stores the compressed air generated by the compressor. The air compressor also comprises a discharge pipe from which the compressed air and a condensate in the tank are discharged to an outside of the tank. The air compressor also comprises a drain cock that is disposed in a passage of the discharge pipe and serves to open and close the discharge pipe. The air compressor also comprises a discharge pipe end portion that includes a discharge port facing upward at a tip end of the discharge pipe. The air compressor also comprises a tubular cover including a top portion that covers the discharge pipe end portion from above.
    Type: Application
    Filed: June 9, 2022
    Publication date: February 9, 2023
    Applicant: MAKITA CORPORATION
    Inventors: Noriyuki NISHIDO, Tomohiro HACHISUKA, Makito TERAMOTO
  • Patent number: 11512692
    Abstract: A wool-like fiber member that has high permeability and low absorbability is disposed around a discharge port of a discharge pipe that is configured to discharge condensate and compressed air stored within a tank.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: November 29, 2022
    Assignee: MAKITA CORPORATION
    Inventor: Tomohiro Hachisuka
  • Publication number: 20220364555
    Abstract: An air compressor includes a motor provided with a basic insulation, a first air compressing unit and a second air compressing unit that are driven by the motor, at least two tanks, and a discharge port. The at least two tanks are connected to the first air compressing unit and the second air compressing unit, store air compressed by the first air compressing unit and the second air compressing unit, and are connected to one another in series. The discharge port is disposed to a tank positioned on a most downstream of supplied compressed air and discharges the compressed air. The motor, the first air compressing unit and the second air compressing unit, and a tank on an upstream side with respect to the tank positioned on the most downstream are electrically insulated from the tank positioned on the most downstream and the discharge port.
    Type: Application
    Filed: October 28, 2020
    Publication date: November 17, 2022
    Applicant: MAKITA CORPORATION
    Inventors: Makito TERAMOTO, Tomohiro HACHISUKA, Noriyuki NISHIDO, Kei KOUDA
  • Publication number: 20190285065
    Abstract: A wool-like fiber member that has high permeability and low absorbability is disposed around a discharge port of a discharge pipe that is configured to discharge condensate and compressed air stored within a tank.
    Type: Application
    Filed: February 14, 2019
    Publication date: September 19, 2019
    Applicant: MAKITA CORPORATION
    Inventor: Tomohiro HACHISUKA
  • Patent number: 10403867
    Abstract: A battery carrier configured to be mounted to a tool body of an electric tool for supplying electric power to the tool body is provided. The battery carrier may include a plurality of battery mount sections disposed at a first surface of the battery carrier and each configured to hold a battery, a tool body mount section disposed at a second surface of the battery carrier opposite to the first surface and configured to be mounted to the tool body, and a marker disposed at the first surface and serving as a target for movement of the tool body mount section relative to the tool body when the tool body mount section is mounted to the tool body.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: September 3, 2019
    Assignee: MAKITA CORPORATION
    Inventors: Tomohiro Hachisuka, Shinsuke Okuda, Yuichi Sugiura, Syusuke Ito
  • Patent number: 9550290
    Abstract: A power tool is provided with a prime mover which causes the tool to rotate and a housing which houses the prime mover. In a back-end face that is positioned on an opposite side on the housing from a tool side, a back-end groove, into which a user can position his/her web between his/her thumb and forefinger, is formed. A pair of side-face grooves, into which the user can place the thumb and forefinger, are formed in both side faces of the housing. A depth changing portion is formed in at least one of the side-face grooves, such that the depth is reduced toward the back-end face of the housing. According to this structure, even when the housing is gripped directly from the back-end face, the user can easily draw up or raise the power tool.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: January 24, 2017
    Assignee: MAKITA CORPORATION
    Inventors: Masamichi Miyazawa, Tomohiro Hachisuka
  • Publication number: 20170012253
    Abstract: A battery carrier configured to be mounted to a tool body of an electric tool for supplying electric power to the tool body is provided. The battery carrier may include a plurality of battery mount sections disposed at a first surface of the battery carrier and each configured to hold a battery, a tool body mount section disposed at a second surface of the battery carrier opposite to the first surface and configured to be mounted to the tool body, and a marker disposed at the first surface and serving as a target for movement of the tool body mount section relative to the tool body when the tool body mount section is mounted to the tool body.
    Type: Application
    Filed: September 23, 2016
    Publication date: January 12, 2017
    Applicant: MAKITA CORPORATION
    Inventors: Tomohiro HACHISUKA, Shinsuke OKUDA, Yuichi SUGIURA, Syusuke ITO
  • Patent number: 9496531
    Abstract: A battery carrier configured to be mounted to a tool body of an electric tool for supplying electric power to the tool body may include a plurality of battery mount sections arranged in a juxtaposed relationship, each battery mount section may be configured to hold a battery that has a length along a longitudinal direction, the length of each mounted battery may be substantially the same, and the battery mount sections may be arranged and configured so that when batteries are mounted on the battery mount sections, longitudinal axes of the respective batteries mounted to the battery mount sections may extend at least partially parallel to each other.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: November 15, 2016
    Assignee: MAKITA CORPORATION
    Inventors: Tomohiro Hachisuka, Shinsuke Okuda, Yuichi Sugiura, Syusuke Ito
  • Patent number: 9113602
    Abstract: The disclosed hedge trimmer is provided with a main body, a blade unit supported by the main body and a chip receiver supported by the blade unit. The chip receiver is attached to the blade unit. The chip receiver is positioned at an opposite side of the blade unit from cutting edges of the blade unit and receives branches and leaves cut by the cutting edges. The chip receiver has a concavo-convex shape including a longitudinal rib, traverse rib and projections formed of a edge of the chip receiver, to prevent the received branches and leaves from dropping.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: August 25, 2015
    Assignee: MAKITA CORPORATION
    Inventor: Tomohiro Hachisuka
  • Patent number: 9035596
    Abstract: A battery device that functions as a power source of a tool main body and is attachable to a body of a user may include a battery housing that is capable of removably receiving at least one rechargeable battery and capable of being electrically connected to the at least one battery, an adaptor that is capable of being electrically connected to the tool main body, and a cable electrically connecting the battery housing and the adaptor. The battery housing comprises a housing body that is constructed to be attached to the body of the user and is capable of receiving the at least one battery therein, and a cover member that is openably and closably attached to the housing body. The housing body and the at least one battery are connected to each other via a male-female engagement device. The male-female engagement device has an engagement release portion that is positioned so as to be exposed when the cover member is opened relative to the housing body.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: May 19, 2015
    Assignee: MAKITA CORPORATION
    Inventors: Yuichi Sugiura, Hideki Abe, Tomohiro Hachisuka, Yukihiko Yamada
  • Patent number: 8925774
    Abstract: The harness comprises a backplate, a plurality of belts and an attachment. The backplate is arranged on the back of the user. The plurality of belts is configured so that one end of each belt is connected to the backplate and another end of each belt is connected to each other on the front of the user. The attachment is supported by at least one of the backplate and the plurality of belts, and is configured to be attached to the power equipment. The backplate preferably comprises at least one ventilation groove formed on its inner surface and extending to the edge of the backplate, which allows air to pass between the user and backplate easily.
    Type: Grant
    Filed: April 1, 2010
    Date of Patent: January 6, 2015
    Assignee: Makita Corporation
    Inventors: Ryota Mori, Tomohiro Hachisuka, Masahiro Ito
  • Patent number: 8850941
    Abstract: The present invention includes a cutting device including a table configured to accommodate a workpiece, and a cutting unit positioned on an upper side of the table and being operable to vertically move relative to the table. The cutting unit includes a cutting blade, and a grip portion disposed on a lateral side of the cutting blade and capable of being grasped by an operator in order to vertically move the cutting unit. The grip portion has a palm contact part that can be touched by a palm of the operator when the operator grasps the grip portion. The palm contact part is inclined relative to a reference line that may be perpendicular to a surface of the cutting blade.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: October 7, 2014
    Assignee: Makita Corporation
    Inventors: Goh Yamamura, Tomohiro Hachisuka
  • Publication number: 20140116741
    Abstract: A power tool is provided with a prime mover which causes the tool to rotate and a housing which houses the prime mover. In a back-end face that is positioned on an opposite side on the housing from a tool side, a back-end groove, into which a user can position his/her web between his/her thumb and forefinger, is formed. A pair of side-face grooves, into which the user can place the thumb and forefinger, are formed in both side faces of the housing. A depth changing portion is formed in at least one of the side-face grooves, such that the depth is reduced toward the back-end face of the housing. According to this structure, even when the housing is gripped directly from the back-end face, the user can easily draw up or raise the power tool.
    Type: Application
    Filed: January 8, 2014
    Publication date: May 1, 2014
    Applicant: MAKITA CORPORATION
    Inventors: Masamichi MIYAZAWA, Tomohiro HACHISUKA
  • Patent number: 8657029
    Abstract: A power tool is provided with a prime mover which causes the tool to rotate and a housing which houses the prime mover. In a back-end face that is positioned on an opposite side on the housing from a tool side, a back-end groove, into which a user can position his/her web between his/her thumb and forefinger, is formed. A pair of side-face grooves, into which the user can place the thumb and forefinger, are formed in both side faces of the housing. A depth changing portion is formed in at least one of the side-face grooves, such that the depth is reduced toward the back-end face of the housing. According to this structure, even when the housing is gripped directly from the back-end face, the user can easily draw up or raise the power tool.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: February 25, 2014
    Assignee: Makita Corporation
    Inventors: Masamichi Miyazawa, Tomohiro Hachisuka
  • Patent number: 8490373
    Abstract: A push mower comprises a mower main body, at least one arm extending upward toward a rear side from the mower main body, and a grip located at a tip end of the at least one arm. Each end of the grip is located on one plane side of an arm plane, a center of the grip is located on an opposite plane side of the arm plane, and therefore the grip extends so as to intersect with the arm plane. Here, the arm plane means a virtual plane on which the at least one arm is located and that is parallel to a left-to-right direction of the mower main body.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: July 23, 2013
    Assignee: Makita Corporation
    Inventor: Tomohiro Hachisuka
  • Publication number: 20130119101
    Abstract: A harness is worn by an operator to support a power tool on a lateral side of the operator, and includes a back plate extending in a vertical direction and placeable on a back of the operator, and a pair of shoulder strap pads that contact both shoulders of the operator. The shoulder strap pads are fixed to the back plate, and the back plate is connected to each of the shoulder strap pads by a belt. The harness further includes an adjusting member with which a length of the belt is adjustable, and a position of the back plate is adjustable toward the back of the operator by adjusting the length of the belt using the adjusting member.
    Type: Application
    Filed: November 2, 2012
    Publication date: May 16, 2013
    Inventor: Tomohiro HACHISUKA
  • Publication number: 20130119100
    Abstract: A harness is worn by an operator to support a power tool, and has a pair of shoulder strap pads that are detachably held on both shoulders of the operator, and a waist pad that is detachably held on a waist of the operator. The harness includes an attaching and detaching member that allows the pair of shoulder strap pads to be attached to and detached from the waist pad at one position on a front side of the operator. The harness further includes a side pad that contacts a side or flank of the operator when the operator wears the harness.
    Type: Application
    Filed: November 2, 2012
    Publication date: May 16, 2013
    Inventors: Masahiro ITO, Tomohiro HACHISUKA
  • Patent number: 8387847
    Abstract: It is an object of the invention to provide a technique that contributes to improved gripping characteristics in a hand-held power tool. A power tool for performing a predetermined operation by driving a tool bit includes a tool body 101 and a handgrip 103 formed on the tool body 101. The handgrip 103 has a plurality of ribs 117 formed in parallel on a grip face which is held by user's fingers and protruding from the grip face. The ribs 117 extend along a contour of the grip face in a longitudinal direction of the handgrip, and in the circumferential direction of the handgrip 103, each of the ribs 117 has a ridged shape which is engaged in one direction but not engaged in the other direction with balls of fingertips of at least third to fifth fingers of the user's hand.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: March 5, 2013
    Assignee: Makita Corporation
    Inventor: Tomohiro Hachisuka