Patents by Inventor Junya Kawamoto
Junya Kawamoto 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).
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Publication number: 20160060840Abstract: A compact excavator including: a swing post (3) which is attached to a upperstructure (2) and which can swing in a left/right direction; a working device (4) which is attached to the swing post (3) and which includes a boom cylinder (5a), etc.; a counterweight (10) which is disposed in a rear part of the upperstructure (2); and hydraulic hoses (14) which extend upwards between opposite side plates (3a and 3b) of the swing post (3), and through which pressure oil for driving the boom cylinder (5a), etc. of the working device (4) is guided; wherein: the compact excavator further includes a guide plate (20) which is provided in the swing post (3), and which guides the hydraulic hoses (14) downwards while restricting the hydraulic hoses (14) from moving to approach a handrail (11) when the hydraulic hoses (14) attempt to expand toward the handrail (11) due to driving of the working device (4).Type: ApplicationFiled: April 25, 2014Publication date: March 3, 2016Applicant: Hitachi Construction Machinery Co., Ltd.Inventors: Yohei IWAMOTO, Junya KAWAMOTO, Osamu KOKURYOU, Hiroshi TABETA, Yasuhiro MIYAHARA
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Patent number: 9255381Abstract: A cooling fan (12) generating a cooling air in a suctioning direction, a radiator (20) provided by facing the cooling fan (12) and cooling an engine coolant by passage of the cooling air, and an oil cooler (21) arranged in parallel with the radiator (20) so as to be in parallel with respect to a flow direction of the cooling air and cooling a hydraulic oil by passage of the cooling air are provided. On a suction side of the cooling air with respect to the radiator (20) and the oil cooler (21), a cooling-air adjusting member (26) for adjusting a ratio of a cooling air amount to be supplied to the radiator (20) and a cooling air amount to be supplied to the oil cooler (21) is provided.Type: GrantFiled: November 30, 2012Date of Patent: February 9, 2016Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.Inventors: Osamu Kokuryo, Junya Kawamoto
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Publication number: 20150211207Abstract: Disclosed is a construction machine that enables an operator to operate a vehicle width changing control lever while visually confirming positions of crawlers. The construction machine includes a lower track structure 1 whose left and right crawler track devices 11A and 11B are adapted to change in spatial interval, and an upper swing structure 2 swingably mounted above the lower track structure. The construction machine further includes a hydraulically actuated cylinder for changing vehicle width, disposed between the left and right crawler track devices, the vehicle width changing cylinder changing the interval between the left and right crawler track devices upon supply and discharge of a hydraulic fluid being controlled by a vehicle width changing control valve, and a vehicle width changing control lever 34 disposed on a left section of a swing body support structure 50 relative to an operator's seat 23, the vehicle width changing control lever operating the vehicle width changing control valve.Type: ApplicationFiled: January 20, 2015Publication date: July 30, 2015Inventors: Daisuke YAMAMOTO, Yohei IWAMOTO, Hiroshi TABETA, Osamu KOKURYO, Junya KAWAMOTO
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Patent number: 9080308Abstract: Provided is a working machine, which can release exhaust gas at a position above a counterweight even if no space is secured for the installation of an exhaust pipe on an upperstructure or on an upper wall of the counterweight, and which can suppress heating of the counterweight by exhaust gas. The working machine is provided with a muffler (10) into which exhaust gas is guided from an engine, and a tailpipe (11) connected to the muffler (10). Defined through a counterweight (7) is a passage (7a) in which the tailpipe (11) is inserted. The working machine is further provided with an exhaust pipe holding member (12) and an exhaust pipe (13). The exhaust pipe holding member (12) is attached to an outer side wall of the counterweight (7), and has a passage (12a) which is in communication with the passage (7a) of the counterweight (7) and in which the tailpipe (11) is inserted.Type: GrantFiled: October 3, 2012Date of Patent: July 14, 2015Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Osamu Kokuryo, Junya Kawamoto, Yasuhiro Miyahara
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Patent number: 9062691Abstract: A hydraulic oil tank capable of assuring strength at a gage installation part and bringing a gage close to a hole portion of an exterior cover while maintaining a predetermined clearance between the exterior cover and the hydraulic oil tank is provided. The hydraulic oil tank, mounted on a swing frame of a hydraulic excavator upperstructure, has a side wall opposing an upperstructure exterior cover with a predetermined clearance, and is adapted to store hydraulic oil to be fed to hydraulic actuators. The hydraulic oil tank has a gage enabling a visual check on the hydraulic oil level in the tank through a hole portion in the exterior cover. The gage is installed in the tank side wall, with an internally-hollow protruding portion protruding toward the exterior cover hole portion and a transparent window portion arranged at an end of the protruding portion.Type: GrantFiled: February 10, 2012Date of Patent: June 23, 2015Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Junya Kawamoto, Kohei Maeda, Kentaro Kamakura
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Publication number: 20150060183Abstract: Provided is a working machine, which can release exhaust gas at a position above a counterweight even if no space is secured for the installation of an exhaust pipe on an upperstructure or on an upper wall of the counterweight, and which can suppress heating of the counterweight by exhaust gas. The working machine is provided with a muffler (10) into which exhaust gas is guided from an engine, and a tailpipe (11) connected to the muffler (10). Defined through a counterweight (7) is a passage (7a) in which the tailpipe (11) is inserted. The working machine is further provided with an exhaust pipe holding member (12) and an exhaust pipe (13). The exhaust pipe holding member (12) is attached to an outer side wall of the counterweight (7), and has a passage (12a) which is in communication with the passage (7a) of the counterweight (7) and in which the tailpipe (11) is inserted.Type: ApplicationFiled: October 3, 2012Publication date: March 5, 2015Inventors: Osamu Kokuryo, Junya Kawamoto, Yasuhiro Miyahara
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Publication number: 20150056052Abstract: A heat exchanging device has a frame member mounted on a revolving frame, and this frame member supports an oil-cooler and a radiator. A support member is to support a canopy and the like. The support member is composed of a housing support base provided by extending in the left-right direction on an upper side of the engine and a left front leg part and a left rear leg parteach having an upper end mounted on a left-side position in the left-right direction of the housing support base and a lower end mounted on the revolving frame by straddling an engine. The housing support base of this support member has a right side in the left-right direction formed as a free end. Further, the free end of the housing support base is configured to be mounted on the frame member of the heat exchanging device.Type: ApplicationFiled: August 12, 2014Publication date: February 26, 2015Inventors: Osamu KOKURYOU, Masaya UEDA, Junya KAWAMOTO
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Publication number: 20150056051Abstract: A control valve block is mounted on a bottom plate of a revolving frame through a control valve block mounting plate. In this case, a left support member and a right support member are provided on a back surface of the control valve block mounting plate at two spots with equal distances sandwiching a center position of gravity (G) of the control valve block. The left and right support members are mounted on a support beam provided on the bottom plate of the revolving frame. On the other hand, a weight-reducing part is provided at a part in the bottom plate of the revolving frame away from the support beam. The control valve block which is a heavy article is stably supported on the bottom plate at two spots sandwiching its center position of gravity (G). Moreover, the weight of the revolving frame can be reduced by the weight-reducing part.Type: ApplicationFiled: August 5, 2014Publication date: February 26, 2015Inventors: Yohei IWAMOTO, Junya KAWAMOTO, Osamu KOKURYOU, Hiroshi TABETA
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Patent number: 8920105Abstract: To provide a swing-type construction machine that can reduce force of working device pipes which is generated in accordance with swinging of a working device and presses against a side wall of a swing post.Type: GrantFiled: June 18, 2012Date of Patent: December 30, 2014Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Kosuke Moriguchi, Katsuhiro Sasaki, Junya Kawamoto, Yasuhiro Miyahara
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Patent number: 8857549Abstract: A mount structure for a control valve unit is provided to permit selective mounting of a small first control valve unit or a large second control valve unit on bodies of construction machines of different models the same family without incurring an increase in the number of kinds of parts or components. The control valve unit may be a small first control valve unit or a large second control valve unit. The mount structure is constructed such that upon mounting the first or second control valve unit on a bracket on which the first or second control valve unit may be selectively mounted, a barycentric position of the bracket with the first control valve unit mounted thereon and a barycentric position of the bracket with the second control valve unit mounted thereon are located on an imaginary line connecting paired hanging-member fixing portions of the bracket.Type: GrantFiled: February 10, 2012Date of Patent: October 14, 2014Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Junya Kawamoto, Kosuke Moriguchi, Katsuhiro Sasaki
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Publication number: 20140301816Abstract: A cooling fan (12) generating a cooling air in a suctioning direction, a radiator (20) provided by facing the cooling fan (12) and cooling an engine coolant by passage of the cooling air, and an oil cooler (21) arranged in parallel with the radiator (20) so as to be in parallel with respect to a flow direction of the cooling air and cooling a hydraulic oil by passage of the cooling air are provided. On a suction side of the cooling air with respect to the radiator (20) and the oil cooler (21), a cooling-air adjusting member (26) for adjusting a ratio of a cooling air amount to be supplied to the radiator (20) and a cooling air amount to be supplied to the oil cooler (21) is provided.Type: ApplicationFiled: November 30, 2012Publication date: October 9, 2014Inventors: Osamu Kokuryo, Junya Kawamoto
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Publication number: 20140140799Abstract: To provide a swing-type construction machine that can reduce force of working device pipes which is generated in accordance with swinging of a working device and presses against a side wall of a swing post.Type: ApplicationFiled: June 18, 2012Publication date: May 22, 2014Applicant: Hitachi Construction Machinery Co., Ltd.Inventors: Kosuke Moriguchi, Katsuhiro Sasaki, Junya Kawamoto, Yasuhiro Miyahara
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Publication number: 20140000726Abstract: A hydraulic oil tank attachment structure arranged in a construction machine secures the strength of a hydraulic oil tank as well as secures a large capacity thereof. The attachment structure is arranged in a compact excavator provided with a revolving superstructure, a working device attached to the revolving superstructure, a hydraulic actuator including a revolving motor that drives the revolving superstructure and an actuator that drives the working device. A hydraulic oil tank made of synthetic resin, which stores hydraulic oil to be supplied to the hydraulic actuator, is attached on a revolving frame of the revolving superstructure. The hydraulic oil tank attachment structure has a holding member provided with a projecting part formed on a side surface of the tank, which is fixed on the revolving frame of the revolving superstructure so as to surround side surfaces thereof to hold the hydraulic oil tank via the projecting part.Type: ApplicationFiled: March 12, 2012Publication date: January 2, 2014Applicant: Hitachi Construction Machinery Co.,Ltd.Inventors: Junya Kawamoto, Kohei Maeda
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Publication number: 20130327427Abstract: A hydraulic oil tank capable of assuring strength at a gage installation part and bringing a gage close to a hole portion of an exterior cover while maintaining a predetermined clearance between the exterior cover and the hydraulic oil tank is provided. The hydraulic oil tank, mounted on a swing frame of a hydraulic excavator upperstructure, has a side wall opposing an upperstructure exterior cover with a predetermined clearance, and is adapted to store hydraulic oil to be fed to hydraulic actuators. The hydraulic oil tank has a gage enabling a visual check on the hydraulic oil level in the tank through a hole portion in the exterior cover. The gage is installed in the tank side wall, with an internally-hollow protruding portion protruding toward the exterior cover hole portion and a transparent window portion arranged at an end of the protruding portion.Type: ApplicationFiled: February 10, 2012Publication date: December 12, 2013Applicant: Hitachi Construction Machinery Co., Ltd.Inventors: Junya Kawamoto, Kohei Maeda, Kentaro Kamakura
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Publication number: 20130330159Abstract: A mount structure for a control valve unit is provided to permit selective mounting of a small first control valve unit or a large second control valve unit on bodies of construction machines of different models the same family without incurring an increase in the number of kinds of parts or components. The control valve unit may be a small first control valve unit or a large second control valve unit. The mount structure is constructed such that upon mounting the first or second control valve unit on a bracket on which the first or second control valve unit may be selectively mounted, a barycentric position of the bracket with the first control valve unit mounted thereon and a barycentric position of the bracket with the second control valve unit mounted thereon are located on an imaginary line connecting paired hanging-member fixing portions of the bracket.Type: ApplicationFiled: February 10, 2012Publication date: December 12, 2013Applicant: Hitachi Constuction Machinery Co., Ltd.Inventors: Junya Kawamoto, Kosuke Moriguchi, Katsuhiro Sasaki
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Patent number: D684602Type: GrantFiled: November 8, 2012Date of Patent: June 18, 2013Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Shigehisa Hagura, Junya Kawamoto, Katsuhiro Sasaki, Osamu Kokuryo, Yasuhiro Miyahara
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Patent number: D684604Type: GrantFiled: November 8, 2012Date of Patent: June 18, 2013Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Akira Saito, Kazuhiko Hiraoka, Shigehisa Hagura, Tomoyuki Miyata, Junya Kawamoto, Katsuhiro Sasaki, Osamu Kokuryo, Yasuhiro Miyahara
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Patent number: D752112Type: GrantFiled: November 7, 2014Date of Patent: March 22, 2016Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Shigehisa Hagura, Tomoyuki Miyata, Kazuhiko Hiraoka, Hiroshi Tabeta, Keiji Ahiko, Junya Kawamoto, Tomoyuki Tanaka
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Patent number: D752113Type: GrantFiled: November 7, 2014Date of Patent: March 22, 2016Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Shigehisa Hagura, Tomoyuki Miyata, Kazuhiko Hiraoka, Hiroshi Tabeta, Keiji Ahiko, Junya Kawamoto, Ryozo Fujikawa
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Patent number: D752651Type: GrantFiled: November 7, 2014Date of Patent: March 29, 2016Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Shigehisa Hagura, Tomoyuki Miyata, Kazuhiko Hiraoka, Osamu Kokuryou, Keiji Ahiko, Junya Kawamoto, Tomoyuki Tanaka