Patents by Inventor Yoshiaki Kurokawa
Yoshiaki Kurokawa 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: 10287962Abstract: A work vehicle includes a hood, an engine, a radiator, an air cleaner, and a condenser. The hood covers an engine compartment located on a front portion of a traveling body. The engine is a drive source. The radiator supplies a coolant to the engine. The air cleaner takes in outside air and supplies the air to the engine. The condenser cools a refrigerant. In front of the radiator, the air cleaner and the condenser are disposed one above the other. The condenser is withdrawable in the left and right direction.Type: GrantFiled: April 17, 2017Date of Patent: May 14, 2019Assignee: YANMAR CO., LTD.Inventors: Yoshiaki Kurokawa, Koji Kawakami
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Publication number: 20190111782Abstract: A work vehicle including a floor (108), a forward pedal arm (41), a reverse pedal arm (51), a forward rotation shaft (42), and a reverse rotation shaft (52). The floor has a first insertion hole (108a) and a second insertion hole (108b). The forward pedal arm is placed in the first insertion hole and provided with a forward pedal (15). The reverse pedal arm is placed in the second insertion hole and provided with a reverse pedal (16). The forward rotation shaft serves as a rotation shaft of the forward pedal arm, and is oriented so that an outer end thereof is directed toward the rear of a vehicle body of the work vehicle. The reverse rotation shaft serves as a rotation shaft of the reverse pedal arm, and is oriented so that an outer end thereof is directed toward the rear of the vehicle body.Type: ApplicationFiled: August 19, 2016Publication date: April 18, 2019Applicant: Yanmar Co., Ltd.Inventors: Shuichi MITANI, Yoshiaki KUROKAWA
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Patent number: 9944168Abstract: Regarding an industrial vehicle 101 configured to include an engine 1 mounted on a front portion of a travelling machine body 102 and an exhaust gas purification device 2 for purifying exhaust gas of the engine 1, the industrial vehicle 101 is such that the exhaust gas purification device 2 is mounted on an upper portion side of the engine 1, and the engine 1 and the exhaust gas purification device 2 are covered with a hood 114, and a maneuvering seat 117 is arranged on a rear side of the hood 114, and it is an object to suppress heat damage on the exhaust gas purification device 2 itself and the hood 114. Opening holes 160 are formed on right and left bilateral sides of the hood 114, and an introduction fin 166 that tilts in a posture for taking in outside air from an advancing direction is arranged in each opening hole 160.Type: GrantFiled: June 11, 2014Date of Patent: April 17, 2018Assignee: Yanmar Co., Ltd.Inventor: Yoshiaki Kurokawa
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Patent number: 9925913Abstract: A tractor headlight device according to the present invention is configured from a pair of high-beam units and a pair of low-beam units, wherein the high-beam units and the low-beam units are respectively disposed at top and bottom. High-beam lamp lenses configuring the high-beam units are formed extending from the front to the sides of a hood. Low-beam lamp lenses configuring the low-beam units are formed along a front grill under the high-beam units.Type: GrantFiled: May 27, 2015Date of Patent: March 27, 2018Assignee: YANMAR CO., LTD.Inventors: Junko Kudou, Yoshiaki Kurokawa
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Patent number: 9902257Abstract: A working vehicle includes an engine mounted in a front portion of a travelling vehicle, a post-processing device that is disposed above the engine and purifies exhaust gas from the engine, and a cooling fan for cooling the engine. The cooling fan is disposed on a front surface side of the engine. A fan shroud that covers the cooling fan is fixed to the travelling vehicle. A hood shield plate that covers a rear side of the engine is disposed on a rear surface of a hood. The hood shield plate is fixed to the travelling vehicle. A pair of left and right beam frames each bridge between respective upper portions of the fan shroud and the hood shield plate.Type: GrantFiled: September 28, 2016Date of Patent: February 27, 2018Assignee: Yanmar Co., Ltd.Inventor: Yoshiaki Kurokawa
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Patent number: 9855837Abstract: Provided is a work vehicle that can easily reduce the manufacturing cost by downsizing and simplifying a case support body and can easily simplify a support structure for a second case. The work vehicle includes an operation unit for an operator to get in, a first case for removing particulate matter in exhaust gas from the engine, and the second case for removing nitrogen oxides in the exhaust gas from the engine. In addition, the work vehicle includes a traveling machine body frame on which the operation unit is mounted, and the case support body for supporting the second case. The case support body is disposed on the traveling machine body frame, and the second case is attached to the traveling machine body frame via the case support body.Type: GrantFiled: April 17, 2014Date of Patent: January 2, 2018Assignee: Yanmar Co., Ltd.Inventors: Yuusaku Okamura, Yoshiaki Kurokawa
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Publication number: 20170313362Abstract: In a bonnet of a tractor having an upper cover and a pair of lower covers, the upper cover has a center line formed from a front end point up to a diagonally-rearward midpoint, and the upper cover is provided with two opening parts sandwiching the center line. In addition, the opening parts are disposed so that one side of each follows the center line.Type: ApplicationFiled: October 21, 2015Publication date: November 2, 2017Inventor: Yoshiaki KUROKAWA
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Patent number: 9783042Abstract: An engine device of a working vehicle is capable of easily enhancing heat-retaining properties of a first case or a second case, and capable of easily forming, between an outer top plate and an inner top plate, a heat shield space in which a differential pressure sensor can be installed. The working vehicle includes an operation cabin on which an operator rides, the first case for removing particulate matter in exhaust gas in an engine, the second case for removing nitrogen oxide in exhaust gas of the engine, and a hood for covering an upper surface of the engine, and a top plate portion of the hood opposed to one or both of the first case and the second case placed on the upper surface of the engine is formed into a double structure from the outer top plate and the inner top plate.Type: GrantFiled: December 10, 2014Date of Patent: October 10, 2017Assignee: Yanmar Co., Ltd.Inventor: Yoshiaki Kurokawa
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Publication number: 20170218808Abstract: A work vehicle includes an engine, a post-processing device, and a cooling fan. The engine is mounted on a front portion of a travelling machine body. The post-processing device purifies exhaust gas of the engine. The cooling fan water-cools the engine. The cooling fan is located in front of the engine. The cooling fan, the engine, and the post-processing device are covered with a hood. The hood includes a shield. The shield covers a lower section of the post-processing device and one side of the engine. The shield is a perforated plate including a plurality of holes.Type: ApplicationFiled: April 17, 2017Publication date: August 3, 2017Inventors: Yoshiaki KUROKAWA, Satoshi HASEGAWA, Masahito ADACHI
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Publication number: 20170218832Abstract: A work vehicle includes a hood, an engine, a radiator, an air cleaner, and a condenser. The hood covers an engine compartment located on a front portion of a traveling body. The engine is a drive source. The radiator supplies a coolant to the engine. The air cleaner takes in outside air and supplies the air to the engine. The condenser cools a refrigerant. In front of the radiator, the air cleaner and the condenser are disposed one above the other. The condenser is withdrawable in the left and right direction.Type: ApplicationFiled: April 17, 2017Publication date: August 3, 2017Inventors: Yoshiaki KUROKAWA, Koji KAWAKAMI
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Publication number: 20170190278Abstract: A tractor headlight device according to the present invention is configured from a pair of high-beam units and a pair of low-beam units, wherein the high-beam units and the low-beam units are respectively disposed at top and bottom. High-beam lamp lenses configuring the high-beam units are formed extending from the front to the sides of a hood. Low-beam lamp lenses configuring the low-beam units are formed along a front grill under the high-beam units.Type: ApplicationFiled: May 27, 2015Publication date: July 6, 2017Inventors: Junko KUDOU, Yoshiaki KUROKAWA
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Publication number: 20170129542Abstract: A hood of a tractor including a front grill, a light unit, and an upper cover is provided with a center pillar. The front grill is attached to the center pillar, the light unit is attached to the front grill, and the upper cover is supported by the center pillar. The hood is further provided with a side frame and a lower cover, where the side frame is attached to the center pillar, and the lower cover is attached to at least the upper cover and the side frame.Type: ApplicationFiled: June 22, 2015Publication date: May 11, 2017Inventor: YOSHIAKI KUROKAWA
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Publication number: 20170072786Abstract: The working vehicle includes an engine installed in a front portion of a traveling machine body, and a post-processing device configured to purify exhaust gas from the engine. The post-processing device is mounted on an upper side of the engine. The engine and the post-processing device are covered with a hood. A hood shield plate is disposed on a rear surface side of the hood and covers at least the post-processing device from a rear surface. A heat insulating layer is formed between an operating seat 8 disposed on a rear side of the hood and the hood shield plate.Type: ApplicationFiled: November 28, 2016Publication date: March 16, 2017Inventor: Yoshiaki KUROKAWA
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Publication number: 20170021721Abstract: A working vehicle includes an engine mounted in a front portion of a travelling vehicle, a post-processing device that is disposed above the engine and purifies exhaust gas from the engine, and a cooling fan for cooling the engine. The cooling fan is disposed on a front surface side of the engine. A fan shroud that covers the cooling fan is fixed to the travelling vehicle. A hood shield plate that covers a rear side of the engin is disposed on a rear surface of a hood. The hood shield plate is fixed to the travelling vehicle. A pair of left and right beam frames each bridge between respective upper portions of the fan shroud and the hood shield plate.Type: ApplicationFiled: September 28, 2016Publication date: January 26, 2017Inventor: Yoshiaki KUROKAWA
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Publication number: 20170015191Abstract: A working vehicle includes an engine mounted in a front portion of a travelling vehicle, and a post-processing device configured to purify exhaust gas from the engine. The engine and the post-processing device are covered with a hood. An upper surface side of the hood is inclined to extend diagonally upward from a front side to a rear side. The post-processing device is mounted on an upper side of the engine, and is positioned on a rear and inner side of the inclined upper surface side of the hood.Type: ApplicationFiled: September 28, 2016Publication date: January 19, 2017Inventor: Yoshiaki KUROKAWA
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Publication number: 20160311314Abstract: An engine device of a working vehicle is capable of easily enhancing heat-retaining properties of a first case or a second case, and capable of easily forming, between an outer top plate and an inner top plate, a heat shield space in which a differential pressure sensor can be installed. The working vehicle includes an operation cabin on which an operator rides, the first case for removing particulate matter in exhaust gas in an engine, the second case for removing nitrogen oxide in exhaust gas of the engine, and a hood for covering an upper surface of the engine, and a top plate portion of the hood opposed to one or both of the first case and the second case placed on the upper surface of the engine is formed into a double structure from the outer top plate and the inner top plate.Type: ApplicationFiled: December 10, 2014Publication date: October 27, 2016Inventor: Yoshiaki KUROKAWA
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Publication number: 20160096426Abstract: Regarding an industrial vehicle 101 configured to include an engine 1 mounted on a front portion of a travelling machine body 102 and an exhaust gas purification device 2 for purifying exhaust gas of the engine 1, the industrial vehicle 101 is such that the exhaust gas purification device 2 is mounted on an upper portion side of the engine 1, and the engine 1 and the exhaust gas purification device 2 are covered with a hood 114, and a maneuvering seat 117 is arranged on a rear side of the hood 114, and it is an object to suppress heat damage on the exhaust gas purification device 2 itself and the hood 114. Opening holes 160 are formed on right and left bilateral sides of the hood 114, and an introduction fin 166 that tilts in a posture for taking in outside air from an advancing direction is arranged in each opening hole 160.Type: ApplicationFiled: June 11, 2014Publication date: April 7, 2016Applicant: YANMAR CO., LTD.Inventor: Yoshiaki KUROKAWA
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Patent number: D766338Type: GrantFiled: April 14, 2015Date of Patent: September 13, 2016Assignee: Yanmar Co., Ltd.Inventors: Yoshiaki Kurokawa, Fumio Ishibashi
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Patent number: D767645Type: GrantFiled: April 14, 2015Date of Patent: September 27, 2016Assignee: Yanmar Co., Ltd.Inventors: Kiyoyuki Okuyama, Yoshiaki Kurokawa, Junko Kudou
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Patent number: D848485Type: GrantFiled: September 1, 2016Date of Patent: May 14, 2019Assignee: YANMAR CO., LTD.Inventors: Yoshiaki Kurokawa, Ryota Ogino