Patents by Inventor Mitsuo Yabe
Mitsuo Yabe 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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Patent number: 9528244Abstract: A wheel loader is provided with an engine, an engine compartment, a top plate, an injection device, and a duct member. The engine compartment houses the engine. The top plate has a first opening section. The top plate defines the upper surface of the engine compartment. The injection device is disposed inside the engine compartment. The duct member is disposed above the injection device. The duct member is disposed below the first opening section.Type: GrantFiled: August 19, 2014Date of Patent: December 27, 2016Assignee: KOMATSU LTD.Inventors: Mitsuo Yabe, Akihiro Ohsawa, Toshiya Shintani, Teruyuki Matsuki, Yoshiaki Yoshida
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Patent number: 9523182Abstract: A wheel loader is provided with an engine compartment, a urea water injection device, a second side plate, a guiding member, and a suction part. The second side plate has a first outdoor air intake port. The guiding member is configured to guide outdoor air sucked in through the first outdoor air intake port onto the urea water injection device. The suction part sucks air into the engine compartment. The urea water injection device is disposed within an air flow produced between the suction part and the guiding member.Type: GrantFiled: March 31, 2014Date of Patent: December 20, 2016Assignee: KOMATSU LTD.Inventors: Mitsuo Yabe, Akihiro Ohsawa, Toshiya Shintani, Teruyuki Matsuki, Yoshiaki Yoshida, Yosuke Yamagoe, Masahiro Tazou, Hiroyuki Kitaoka
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Publication number: 20160327348Abstract: A corrugated fin has flat plate sections each having a pair of lateral sides facing each other and a pair of end sides facing each other, and joining sections connecting with lateral sides of the flat plate sections. The flat plate sections and joining sections are alternately formed into a corrugated shape by bending. The joining section has an even surface joined to a tube through which a heat exchange medium flows, while the flat plate section includes a recess or protrusions in arbitrary sections taken along two directions including a direction in which the lateral sides are arranged and a direction in which the end sides are arranged, respectively.Type: ApplicationFiled: July 21, 2016Publication date: November 10, 2016Applicants: KOMATSU LTD., THE UNIVERSITY OF TOKYOInventors: Mitsuo YABE, Naoki SHIKAZONO
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Publication number: 20160237646Abstract: A wheel loader is provided with an engine compartment, a urea water injection device, a second side plate a guiding member, and a suction part. The second side plate has a first outdoor air intake port. The guiding member is configured to guide outdoor air sucked in through the first outdoor air intake port onto the urea water injection device. The suction part sucks air into the engine compartment. The urea water injection device is disposed within an air flow produced between the suction part and the guiding member.Type: ApplicationFiled: March 31, 2014Publication date: August 18, 2016Inventors: Mitsuo YABE, Akihiro OHSAWA, Toshiya SHINTANI, Teruyuki MATSUKI, Yoshiaki YOSHIDA, Yosuke YAMAGOE, Masahiro TAZOU, Hiroyuki KITAOKA
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Publication number: 20160153173Abstract: A wheel loader is provided with an engine, an engine compartment, a top plate, an injection device, and a duct member. The engine compartment houses the engine. The top plate has a first opening section. The top plate defines the upper surface of the engine compartment. The injection device is disposed inside the engine compartment. The duct member is disposed above the injection device. The duct member is disposed below the first opening section.Type: ApplicationFiled: August 19, 2014Publication date: June 2, 2016Inventors: Mitsuo YABE, Akihiro OHSAWA, Toshiya SHINTANI, Teruyuki MATSUKI, Yoshiaki YOSHIDA
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Patent number: 9353503Abstract: A wheel loader is provided with an engine compartment, a cooling compartment, a radiator, a cooling fan, a partition wall, a first duct body part, and a top plate. A first end part of the first duct body part is positioned inside the engine compartment. A second end part of the first duct body part is positioned inside the cooling compartment in front of the radiator and the cooling fan. A first outdoor air intake port formed in the top plate is formed in front of the radiator and the cooling fan.Type: GrantFiled: March 31, 2014Date of Patent: May 31, 2016Assignee: KOMATSU LTD.Inventors: Mitsuo Yabe, Akihiro Ohsawa, Toshiya Shintani, Teruyuki Matsuki, Yoshiaki Yoshida, Yosuke Yamagoe, Masahiro Tazou, Hiroyuki Kitaoka
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Patent number: 9228320Abstract: A cooling device includes: a cooling fan; a shroud provided at an outer circumferential side of the cooling fan; an inner circumferential wall provided on the shroud and adjacent to the outer circumference of the cooling fan; and an outer circumferential wall provided to surround the inner circumferential wall. An air-flow-direction downstream side end of an outer circumferential edge of the cooling fan is positioned at a further downstream position in an air flow direction than an air-flow-direction downstream side end of the inner circumferential wall. An angle between: an line connecting the air-flow-direction downstream side end of the inner circumferential wall to the air-flow-direction downstream side end of the outer circumferential wall in cross section along the air flow direction of the inner circumferential wall and the outer circumferential wall; and a line orthogonal to the air flow direction, is 9 degrees or more and 45 degrees or less.Type: GrantFiled: August 29, 2008Date of Patent: January 5, 2016Assignee: Komatsu Ltd.Inventors: Mitsuo Yabe, Hiroki Shinoda, Masahiro Ikeda, Tomoya Watanabe, Atsushi Kawano, Seiichi Fuchita, Yasuhiro Kusuyama, Teruyuki Matsuki
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Patent number: 9228318Abstract: A cooling device includes: a cooling fan; a shroud provided at an outer circumferential side of the cooling fan; an inner circumferential wall provided on the shroud and adjacent to the outer circumference of the cooling fan so as to surround the cooling fan; an outer circumferential wall provided to surround the inner circumferential wall. An air-flow-direction downstream side end of the outer circumferential wall is positioned at a further downstream position in an air flow direction than an air-flow-direction downstream side end of the inner circumferential wall. The cooling fan is rotatable within a space provided on a radially inner side of the inner circumferential wall. The air-flow-direction downstream side end of the outer circumferential wall is provided at a further upstream position in the air flow direction than an air-flow-direction downstream side end of the cooling fan.Type: GrantFiled: August 29, 2008Date of Patent: January 5, 2016Assignee: Komatsu Ltd.Inventors: Mitsuo Yabe, Hiroki Shinoda, Masahiro Ikeda, Tomoya Watanabe, Atsushi Kawano, Seiichi Fuchita, Yasuhiro Kusuyama, Teruyuki Matsuki
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Patent number: 9228317Abstract: A cooling device includes: a cooling fan; a shroud provided at an outer circumferential side of the cooling fan; and a ring having an inner circumferential wall and an outer circumferential wall. The inner circumferential wall is provided on the shroud and adjacent to an outer circumference of the cooling fan. The outer circumferential wall surrounds the inner circumferential wall, and an air-flow-direction downstream side end of the outer circumferential wall is positioned at a further downstream position in an air flow direction than an air-flow-direction downstream side end of the inner circumferential wall. An air-flow-direction downstream side end of an outer circumferential edge of the cooling fan is positioned at a further downstream position in the air flow direction than the air-flow-direction downstream side end of the inner circumferential wall.Type: GrantFiled: August 29, 2008Date of Patent: January 5, 2016Assignee: Komatsu Ltd.Inventors: Mitsuo Yabe, Hiroki Shinoda, Masahiro Ikeda, Tomoya Watanabe, Atsushi Kawano, Seiichi Fuchita, Yasuhiro Kusuyama, Teruyuki Matsuki
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Patent number: 9228319Abstract: A cooling device includes: a cooling fan; a shroud provided at an outer circumferential side of the cooling fan; an inner circumferential wall provided on the shroud and adjacent to the outer circumference of the cooling fan; and an outer circumferential wall provided to surround the inner circumferential wall. An air-flow-direction downstream side end of the outer circumferential wall is positioned at a further downstream position in an air flow direction than an air-flow-direction downstream side end of the inner circumferential wall. An air-flow-direction downstream side end of the cooling fan is positioned at a further downstream position than the air-flow-direction downstream side end of the inner circumferential wall. A ratio between a length of the outer circumferential wall and a length of the inner circumferential wall in the air flow direction is 1.07 or more and 1.81 or less, and a width between the outer circumferential wall and the inner circumferential wall is 15 mm or more and 55 mm or less.Type: GrantFiled: August 29, 2008Date of Patent: January 5, 2016Assignee: Komatsu Ltd.Inventors: Mitsuo Yabe, Hiroki Shinoda, Masahiro Ikeda, Tomoya Watanabe, Atsushi Kawano, Seiichi Fuchita, Yasuhiro Kusuyama, Teruyuki Matsuki
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Publication number: 20150337520Abstract: A wheel loader is provided with an engine compartment, a cooling compartment, a radiator, a cooling fan, a partition wall, a first duct body part, and a top plate. A first end part of the first duct body part is positioned inside the engine compartment. A second end part of the first duct body part is positioned inside the cooling compartment in front of the radiator and the cooling fan. A first outdoor air intake port formed in the top plate is formed in front of the radiator and the cooling fan.Type: ApplicationFiled: March 31, 2014Publication date: November 26, 2015Inventors: Mitsuo YABE, Akihiro OHSAWA, Toshiya SHINTANI, Teruyuki MATSUKI, Yoshiaki YOSHIDA, Yosuke YAMAGOE, Masahiro TAZOU, Hiroyuki KITAOKA
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Publication number: 20130075071Abstract: The invention provides a heat exchanger having a fin with an optimum thickness, and thus being capable of providing a superior cooling effect while having an excellent workability. A heat exchanger is designed to be mounted on a construction machine used on a construction site and is configured to cool heated cooling water. The heat exchanger includes a tube that allows the cooling water to flow therein, and a fin that is joined to the tube and has an imperforate and planar heat radiation surface. The thickness of the fin is greater than 0.2 mm but is equal to or less than 0.4 mm. Further, aluminum is selected as the material for the tube and the fin. The tube and the fin are joined to each other with an aluminum brazing rod.Type: ApplicationFiled: June 23, 2011Publication date: March 28, 2013Applicant: KOMATSU LTD.Inventors: Mitsuo Yabe, Shunichi Sakuragi
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Patent number: 8336444Abstract: A pressure-receiving face plate 29 is mounted on one end face of a piston 12, and a support member 26 is raised on the end face of the piston 12. Disposed on the support member 26 with an allowance are, from the pressure-receiving faceplate 29 respectively, a disk spring 27, a plate 25, and a plunger 28. A flange 26a prevents these members from slipping off the support member 26. When the piston 12 approaches a stroke end, the plunger 28 is inserted in an oil passage 20b and applies a cushioning effect to the piston 12. In addition, a gap between the pressure-receiving faceplate 29 and the plate 25 brought into contact with a cylinder bottom 17 becomes narrow, and produces a squeeze effect such that oil escapes from the narrow gap. This makes it possible to provide a hydraulic cylinder that produces a sufficient impact force at the stroke end of the piston and also reduces noise emitted by the impact force, without increasing a length of the hydraulic cylinder.Type: GrantFiled: April 11, 2006Date of Patent: December 25, 2012Assignee: Komatsu Ltd.Inventors: Kazuya Imamura, Kuniaki Nakada, Noboru Kanayama, Mitsuo Yabe, Tomoya Watanabe, Teruyuki Hosoya
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Publication number: 20120318485Abstract: A corrugated fin has flat plate sections each having a pair of lateral sides facing each other and a pair of end sides facing each other, and joining sections connecting with lateral sides of the flat plate sections. The flat plate sections and joining sections are alternately formed into a corrugated shape by bending. The joining section has an even surface joined to a tube through which a heat exchange medium flows, while the flat plate section includes a recess or protrusions in arbitrary sections taken along two directions including a direction in which the lateral sides are arranged and a direction in which the end sides are arranged, respectively.Type: ApplicationFiled: February 22, 2011Publication date: December 20, 2012Inventors: Mitsuo Yabe, Naoki Shikazono
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Publication number: 20100300283Abstract: A pressure-receiving face plate 29 is mounted on one end face of a piston 12, and a support member 26 is raised on the end face of the piston 12. Disposed on the support member 26 with an allowance are, from the pressure-receiving faceplate 29 respectively, a disk spring 27, a plate 25, and a plunger 28. A flange 26a prevents these members from slipping off the support member 26. When the piston 12 approaches a stroke end, the plunger 28 is inserted in an oil passage 20b and applies a cushioning effect to the piston 12. In addition, a gap between the pressure-receiving faceplate 29 and the plate 25 brought into contact with a cylinder bottom 17 becomes narrow, and produces a squeeze effect such that oil escapes from the narrow gap. This makes it possible to provide a hydraulic cylinder that produces a sufficient impact force at the stroke end of the piston and also reduces noise emitted by the impact force, without increasing a length of the hydraulic cylinder.Type: ApplicationFiled: April 11, 2006Publication date: December 2, 2010Inventors: Kazuya Imamura, Kuniaki Nakada, Noboru Kanayama, Mitsuo Yabe, Tomoya Watanabe, Teruyuki Hosoya
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Publication number: 20100206526Abstract: A cooling device includes: a cooling fan; a shroud provided at an outer circumferential side of the cooling fan; an inner circumferential wall provided on the shroud and adjacent to the outer circumference of the cooling fan; and an outer circumferential wall provided to surround the inner circumferential wall. An air-flow-direction downstream side end of an outer circumferential edge of the cooling fan is positioned at a further downstream position in an air flow direction than an air-flow-direction downstream side end of the inner circumferential wall. An angle between: an line connecting the air-flow-direction downstream side end of the inner circumferential wall to the air-flow-direction downstream side end of the outer circumferential wall in cross section along the air flow direction of the inner circumferential wall and the outer circumferential wall; and a line orthogonal to the air flow direction, is 9 degrees or more and 45 degrees or less.Type: ApplicationFiled: August 29, 2008Publication date: August 19, 2010Inventors: Mitsuo Yabe, Hiroki Shinoda, Masahiro Ikeda, Tomoya Watanabe, Atsushi Kawano, Seiichi Fuchita, Yasuhiro Kusuyama, Teruyuki Matsuki
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Publication number: 20100206525Abstract: A cooling device includes: a cooling fan; a shroud provided at an outer circumferential side of the cooling fan; an inner circumferential wall provided on the shroud and adjacent to the outer circumference of the cooling fan so as to surround the cooling fan; an outer circumferential wall provided to surround the inner circumferential wall. An air-flow-direction downstream side end of the outer circumferential wall is positioned at a further downstream position in an air flow direction than an air-flow-direction downstream side end of the inner circumferential wall. The cooling fan is rotatable within a space provided on a radially inner side of the inner circumferential wall. The air-flow-direction downstream side end of the outer circumferential wall is provided at a further upstream position in the air flow direction than an air-flow-direction downstream side end of the cooling fan.Type: ApplicationFiled: August 29, 2008Publication date: August 19, 2010Inventors: Mitsuo Yabe, Hiroki Shinoda, Masahiro Ikeda, Tomoya Watanabe, Atsushi Kawano, Seiichi Fuchita, Yasuhiro Kusuyama, Teruyuki Matsuki
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Publication number: 20100200193Abstract: A cooling device includes: a cooling fan; a shroud provided at an outer circumferential side of the cooling fan; and a ring having an inner circumferential wall and an outer circumferential wall. The inner circumferential wall is provided on the shroud and adjacent to an outer circumference of the cooling fan. The outer circumferential wall surrounds the inner circumferential wall, and an air-flow-direction downstream side end of the outer circumferential wall is positioned at a further downstream position in an air flow direction than an air-flow-direction downstream side end of the inner circumferential wall. An air-flow-direction downstream side end of an outer circumferential edge of the cooling fan is positioned at a further downstream position in the air flow direction than the air-flow-direction downstream side end of the inner circumferential wall.Type: ApplicationFiled: August 29, 2008Publication date: August 12, 2010Applicant: Komatsu Ltd.Inventors: Mitsuo Yabe, Hiroki Shinoda, Masahiro Ikeda, Tomoya Watanabe, Atsushi Kawano, Seiichi Fuchita, Yasuhiro Kusuyama, Teruyuki Matsuki
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Publication number: 20100200194Abstract: A cooling device includes: a cooling fan; a shroud provided at an outer circumferential side of the cooling fan; an inner circumferential wall provided on the shroud and adjacent to the outer circumference of the cooling fan; and an outer circumferential wall provided to surround the inner circumferential wall. An air-flow-direction downstream side end of the outer circumferential wall is positioned at a further downstream position in an air flow direction than an air-flow-direction downstream side end of the inner circumferential wall. An air-flow-direction downstream side end of the cooling fan is positioned at a further downstream position than the air-flow-direction downstream side end of the inner circumferential wall. A ratio between a length of the outer circumferential wall and a length of the inner circumferential wall in the air flow direction is 1.07 or more and 1.81 or less, and a width between the outer circumferential wall and the inner circumferential wall is 15 mm or more and 55 mm or less.Type: ApplicationFiled: August 29, 2008Publication date: August 12, 2010Applicant: Komatsu Ltd.Inventors: Mitsuo Yabe, Hiroki Shinoda, Masahiro Ikeda, Tomoya Watanabe, Atsushi Kawano, Seiichi Fuchita, Yasuhiro Kusuyama, Teruyuki Matsuki
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Patent number: D620031Type: GrantFiled: November 6, 2008Date of Patent: July 20, 2010Assignee: Komatsu Ltd.Inventors: Mitsuo Yabe, Masahiro Ikeda, Tomoya Watanabe, Seiichi Fuchita, Yasuhiro Kusuyama