Patents by Inventor Yasushi Yokochi

Yasushi Yokochi 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: 20200223046
    Abstract: A striking tool includes: a driver which is provided to be slidable toward an ejecting port provided in a tip end of the striking tool so as to strike out a fastener from the ejecting port; a plunger to which the driver is coupled; a plunger urging member which is configured to urge the plunger toward the ejecting port: and a drive mechanism which is configured to move the plunger to accumulate urging force in the plunger urging member. A standby position of the plunger before striking out the fastener can be switched between a usual standby position and a standby position for maintenance closer to the ejecting port than the usual standby position.
    Type: Application
    Filed: January 14, 2020
    Publication date: July 16, 2020
    Applicant: MAX CO., LTD.
    Inventors: Takamichi HOSHINO, Yasushi YOKOCHI, Yoshihiko KONDO, Yosei NODAGUCHI, Takashi SUZUKI
  • Publication number: 20200208668
    Abstract: A connection fastener in which a plurality of fasteners for a driving tool are connected includes a connection band which detachably connects sleeves holding the fasteners one by one. A gap is formed between the sleeve and the fastener so as to face a toe side of the fastener.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 2, 2020
    Applicant: MAX CO., LTD.
    Inventors: Toshimichi ARAI, Satoru YONEYAMA, Yasushi YOKOCHI, Naoyuki FUKUSHIMA
  • Patent number: 9604352
    Abstract: An impact tool can be operated by generating an impact using an internal mechanism. The impact tool includes a control unit and sensors. The control unit controls the internal mechanism. The sensors output a signal for operating the internal mechanism or a signal for preparing the operation of the internal mechanism, to the control unit. Until a predetermined condition is established after the internal mechanism is operated, the control unit does not accept the input of the sensors.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: March 28, 2017
    Assignee: MAX CO., LTD.
    Inventors: Tsuyoshi Kobayashi, Norihiro Nagai, Yasushi Yokochi
  • Patent number: 9370859
    Abstract: A gas combustion type driving tool is provided with a fuel container storing portion, a lid that covers an opening of the fuel container storing portion, a connecting section which is formed in the fuel container storing portion and to which a nozzle of a fuel container is connected; and a cover member that covers the connecting section. The fuel container storing portion is adapted so that the fuel container stored within the fuel container storing portion is attachable and detachable by opening the lid. The connecting section is adapted to be exposed to an outside of the tool by opening the cover member.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: June 21, 2016
    Assignee: MAX CO., LTD.
    Inventors: Makoto Kosuge, Yasushi Yokochi, Takamichi Hoshino
  • Patent number: 8985425
    Abstract: A fluid supply control device and a gas combustion type nailer including the fluid supply control device are provided. The fluid supply control device includes a gauging chamber configured to be charged with a fluid, an inlet port through which the fluid flows into the gauging chamber, an outlet port through which the fluid flows out from the gauging chamber, a first valve element arranged inside the gauging chamber to close the inlet port, a second valve element arranged inside the gauging chamber to close the outlet port, an electromagnetic biasing structure configured to electromagnetically bias the first valve element and the second valve element, and an elastic biasing structure configured to elastically bias at least one of the first valve element and the second valve element. The first valve element and the second valve element are independently movable and are actuated with a time difference.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: March 24, 2015
    Assignee: Max Co., Ltd.
    Inventors: Satoshi Osuga, Yasushi Yokochi, Hisami Oguri
  • Patent number: 8978950
    Abstract: A fuel container holding structure for detachably holding a fuel container 40 including a nozzle 44 in its front end portion is provided with a front end holding portion 22 for holding the front end portion of the fuel container 40 and a rear end holding portion 28 for holding a rear end portion of the fuel container 40. The front end holding portion 22 includes a connecting portion 23 to which the nozzle 44 is connected and a buffer mechanism 25, 42 disposed between the connecting portion 23 and fuel container 40. The fuel container 40 is supported by the buffer mechanism 25, 42.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: March 17, 2015
    Assignee: Max Co., Ltd.
    Inventors: Hiroki Yamamoto, Yasushi Yokochi
  • Patent number: 8915415
    Abstract: In a gas combustion type striking machine, a combustion chamber is opened and closed by moving a movable sleeve in a vertical direction. A safety lever is attached to a trigger, and a switch is switched by being pressed by a switch lever arranged to be engageable with the safety lever. A hold member which is engageable with the movable sleeve is rotatably connected to the trigger. A shaft supporting a base end of the hold member positions between a shaft supporting the switch lever and a cylinder in a right-left direction which is perpendicular to the vertical direction.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: December 23, 2014
    Assignee: Max Co., Ltd.
    Inventor: Yasushi Yokochi
  • Patent number: 8893670
    Abstract: A gas combustion type driving tool is provided with a combustion portion; a fuel container for containing a fuel; an electromagnetic valve device for injecting the fuel into the combustion portion; and a grip portion. A distance from the fuel container to the combustion portion is set substantially equal to or less than a distance from the electromagnetic valve device (24) to the combustion portion.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: November 25, 2014
    Assignee: Max Co., Ltd.
    Inventors: Makoto Kosuge, Yasushi Yokochi, Takamichi Hoshino
  • Publication number: 20140069980
    Abstract: An impact tool can be operated by generating an impact using an internal mechanism. The impact tool includes a control unit and sensors. The control unit controls the internal mechanism. The sensors output a signal for operating the internal mechanism or a signal for preparing the operation of the internal mechanism, to the control unit. Until a predetermined condition is established after the internal mechanism is operated, the control unit does not accept the input of the sensors.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 13, 2014
    Applicant: MAX CO., LTD.
    Inventors: Tsuyoshi KOBAYASHI, Norihiro NAGAI, Yasushi YOKOCHI
  • Publication number: 20120312829
    Abstract: A fuel container holding structure for detachably holding a fuel container 40 including a nozzle 44 in its front end portion is provided with a front end holding portion 22 for holding the front end portion of the fuel container 40 and a rear end holding portion 28 for holding a rear end portion of the fuel container 40. The front end holding portion 22 includes a connecting portion 23 to which the nozzle 44 is connected and a buffer mechanism 25, 42 disposed between the connecting portion 23 and fuel container 40. The fuel container 40 is supported by the buffer mechanism 25, 42.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 13, 2012
    Applicant: MAX CO., LTD.
    Inventors: Hiroki YAMAMOTO, Yasushi Yokochi
  • Patent number: 8308038
    Abstract: A part clamp is temporarily held in a short cylindrical portion provided on a contact arm of a nailing machine and is nailed to a building body or the like by the nailing machine. The part clamp is provided with a base portion having a through hole at its center for inserting a nail therethrough, and an engaging portions for engaging with the short cylindrical portion. When the part clamp is pushed in the axial direction of an injection port of the nailing machine, the part clamp is temporarily held in the short cylindrical portion. The load to push the part clamp to engage with the short cylindrical portion is lower than the load to push the contact arm to slide along the injection port.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: November 13, 2012
    Assignee: Max Co., Ltd.
    Inventors: Hiroshi Tanaka, Yasushi Yokochi, Satoshi Osuga, Hiroshi Shiokawa
  • Publication number: 20120228438
    Abstract: A part clamp is temporarily held in a short cylindrical portion provided on a contact arm of a nailing machine and is nailed to a building body or the like by the nailing machine. The part clamp is provided with a base portion having a through hole at its center for inserting a nail therethrough, and an engaging portions for engaging with the short cylindrical portion. When the part clamp is pushed in the axial direction of an injection port of the nailing machine, the part clamp is temporarily held in the short cylindrical portion. The load to push the part clamp to engage with the short cylindrical portion is lower than the load to push the contact arm to slide along the injection port.
    Type: Application
    Filed: May 22, 2012
    Publication date: September 13, 2012
    Inventors: Hiroshi TANAKA, Yasushi YOKOCHI, Satoshi OSUGA, Hiroshi SHIOKAWA
  • Publication number: 20120222654
    Abstract: A gas combustion type driving tool is provided with a combustion portion; a fuel container for containing a fuel; an electromagnetic valve device for injecting the fuel into the combustion portion; and a grip portion. A distance from the fuel container to the combustion portion is set substantially equal to or less than a distance from the electromagnetic valve device (24) to the combustion portion.
    Type: Application
    Filed: February 29, 2012
    Publication date: September 6, 2012
    Applicant: MAX CO., LTD.
    Inventors: Makoto KOSUGE, Yasushi YOKOCHI, Takamichi HOSHINO
  • Publication number: 20120211539
    Abstract: A gas combustion type driving tool is provided with a fuel container storing portion, a lid that covers an opening of the fuel container storing portion, a connecting section which is formed in the fuel container storing portion and to which a nozzle of a fuel container is connected; and a cover member that covers the connecting section. The fuel container storing portion is adapted so that the fuel container stored within the fuel container storing portion is attachable and detachable by opening the lid. The connecting section is adapted to be exposed to an outside of the tool by opening the cover member.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 23, 2012
    Applicant: MAX CO., LTD.
    Inventors: Makoto KOSUGE, Yasushi YOKOCHI, Takamichi HOSHINO
  • Publication number: 20120037681
    Abstract: In a gas combustion type striking machine, a combustion chamber is opened and closed by moving a movable sleeve in a vertical direction. A safety lever is attached to a trigger, and a switch is switched by being pressed by a switch lever arranged to be engageable with the safety lever. A hold member which is engageable with the movable sleeve is rotatably connected to the trigger. A shaft supporting a base end of the hold member positions between a shaft supporting the switch lever and a cylinder in a right-left direction which is perpendicular to the vertical direction.
    Type: Application
    Filed: July 26, 2011
    Publication date: February 16, 2012
    Applicant: MAX CO., LTD.
    Inventor: Yasushi YOKOCHI
  • Publication number: 20120018485
    Abstract: A fluid supply control device and a gas combustion type nailer including the fluid supply control device are provided. The fluid supply control device includes a gauging chamber configured to be charged with a fluid, an inlet port through which the fluid flows into the gauging chamber, an outlet port through which the fluid flows out from the gauging chamber, a first valve element arranged inside the gauging chamber to close the inlet port, a second valve element arranged inside the gauging chamber to close the outlet port, an electromagnetic biasing structure configured to electromagnetically bias the first valve element and the second valve element, and an elastic biasing structure configured to elastically bias at least one of the first valve element and the second valve element. The first valve element and the second valve element are independently movable and are actuated with a time difference.
    Type: Application
    Filed: July 25, 2011
    Publication date: January 26, 2012
    Applicant: MAX CO., LTD.
    Inventors: Satoshi OSUGA, Yasushi Yokochi, Hisami Oguri
  • Publication number: 20090065655
    Abstract: A part clamp is temporarily held in a short cylindrical portion provided on a contact arm of a nailing machine and is nailed to a building body or the like by the nailing machine. The part clamp is provided with a base portion having a through hole at its center for inserting a nail therethrough, and an engaging portions for engaging with the short cylindrical portion. When the part clamp is pushed in the axial direction of an injection port of the nailing machine, the part clamp is temporarily held in the short cylindrical portion. The load to push the part clamp to engage with the short cylindrical portion is lower than the load to push the contact arm to slide along the injection port.
    Type: Application
    Filed: February 3, 2005
    Publication date: March 12, 2009
    Inventors: Hiroshi Tanaka, Yasushi Yokochi, Satoshi Osuga, Hiroshi Shiokawa
  • Publication number: 20090032563
    Abstract: A containing portion 22 for a motor is formed at an upper wall of a combustion chamber 11 of a gas combustion type striking machine. A shaft 21 of a motor 20 is coupled with a rotating fan 18 penetrated through a bottom portion of the containing portion 22 to face the combustion chamber 11. A mixture gas provided by being agitated and mixed by the rotating fan 18 is ignited and combusted at inside of the combustion chamber 11. A fastener is struck by a pressure of a combustion gas produced by the combustion. The motor 20 is contained in the containing portion 22 by way of damping members 25, 26 in a shape of a short cylinder respectively having an elasticity at upper and lower portions thereof. The respective damping members 25, 26 are formed with a plural of groove holes 28 prolonged in an up and down direction at constant intervals along a peripheral direction.
    Type: Application
    Filed: March 30, 2006
    Publication date: February 5, 2009
    Inventor: Yasushi Yokochi
  • Patent number: 7308996
    Abstract: An injection nozzle 21 for injecting a combustible gas into an annular combustion chamber 10 formed above a driving cylinder 4 is formed so as to face the interior of the combustion chamber 10, in which a rotary fan 24 for mixing a combustion gas supplied into the combustion chamber 10 and air is provided. A vortex generator 33 is formed in an upstream side of the injection nozzle 21 in an air flow formed in the combustion chamber 10 by the rotary fan. Vortexes are generated near the injection nozzle 21 in the combustion chamber 10 by the vortex generator 33, so that the mixing of the combustion gas and air is promoted.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: December 18, 2007
    Assignee: Max Co., Ltd.
    Inventors: Hiroshi Tanaka, Satoshi Osuga, Yasushi Yokochi
  • Patent number: 7255135
    Abstract: A front end of a ball screw shaft driven by a motor is connected with a binding line clamp apparatus (513) including three clamp plates (514, 515, 516). The left and right clamp plates (515, 516) are constituted to be brought into elastic contact with the center clamp plate (515) and close the left and right clamp plates by operation of cams (527, 528) when a sleeve is moved rearward. In a state of opening the clamp plates, a binding line is fed out to an upper side by passing through an interval between the right clamp plate (515) and the center clamp plate (514), formed in a loop shape and moved into an interval between the left clamp plate (516) and the center clamp plate (517). When the sleeve is moved rearward by driving to rotate a ball screw shaft, the left and right clamp plates are closed to grasp a front end and a rear end of the binding line loop and thereafter, the binding line clamp apparatus is rotated to twist the binding line to bind a reinforcing bar.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: August 14, 2007
    Assignee: Max Co., Ltd.
    Inventors: Noboru Ishikawa, Ichiro Kusakari, Takahiro Nagaoka, Osamu Itagaki, Yasushi Yokochi