Patents by Inventor Makoto Motozu
Makoto Motozu 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: 11313101Abstract: A cover mounting bracket (16) is provided on an upper side of a left weight part (11) and a right weight part (12) constituting a counterweight (10). The cover mounting bracket (16) is formed as a U-shaped frame with the counterweight (10) side open by a left extending member (17) extending forward from the upper side of the left weight part (11), a right extending member (18) extending forward from the upper side of the right weight part (12), and a connecting member (19) connecting the front side of the left extending member (17) and the front side of the right extending member (18). A prime mover cover (28) is supported on the connecting member (19) of the cover mounting bracket (16) rotatably in a vertical direction through a hinge (31). The prime mover cover (28) is moved between an open position where an inspection opening (15) of the counterweight (10) is opened and a closed position where the inspection opening (15) is closed around the hinge (31).Type: GrantFiled: September 29, 2017Date of Patent: April 26, 2022Assignee: Hitachi Construction Machinery Tierra Co., Ltd.Inventors: Yuuki Umizaki, Makoto Motozu
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Publication number: 20210324606Abstract: A cover mounting bracket (16) is provided on an upper side of a left weight part (11) and a right weight part (12) constituting a counterweight (10). The cover mounting bracket (16) is formed as a U-shaped frame with the counterweight (10) side open by a left extending member (17) extending forward from the upper side of the left weight part (11), a right extending member (18) extending forward from the upper side of the right weight part (12), and a connecting member (19) connecting the front side of the left extending member (17) and the front side of the right extending member (18). A prime mover cover (28) is supported on the connecting member (19) of the cover mounting bracket (16) rotatably in a vertical direction through a hinge (31). The prime mover cover (28) is moved between an open position where an inspection opening (15) of the counterweight (10) is opened and a closed position where the inspection opening (15) is closed around the hinge (31).Type: ApplicationFiled: September 29, 2017Publication date: October 21, 2021Inventors: Yuuki UMIZAKI, Makoto MOTOZU
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Patent number: 9091041Abstract: A control device for driving/controlling an engine on the basis of a signal from a temperature state detector, a rotation detector, and a rotational speed setting device is provided. The control device includes a start temperature determining processing unit configured to determine whether or not a temperature (T) at start of the engine is less than a predetermined temperature (Tw1) and a start control processing is performed in accordance with a set value of a target rotational speed (Nset) by the rotational speed setting device in case the start temperature (T) is equal to or less than the predetermined temperature (Tw1). This suppresses occurrence of cavitation by stopping the start of the engine (10) within a range in which the temperature (T) is equal to or lower than the predetermined temperature (Tw1) and the target rotational speed (Nset) of the engine (10) is higher than a predetermined threshold value (Nca).Type: GrantFiled: January 9, 2013Date of Patent: July 28, 2015Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.Inventors: Hajime Yoshida, Shuuhei Noguchi, Makoto Motozu
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Patent number: 8998234Abstract: On a revolving frame (5), an operating oil tank (15) located on the front side of an engine (8) is provided, and a fuel tank (16) located on the front side of the operating oil tank (15) is arranged. A mounting member (17) is provided on the lower side of the fuel tank (16) across a part of a swing cylinder (14). Between the operating oil tank (15) and the mounting member (17), a vertical restraining element (20) for restraining the fuel tank (16) in a front-rear direction and a vertical direction and a lateral restraining element (25) for restraining the fuel tank (16) in a left-right direction are detachably provided. Therefore, the fuel tank (16) can be restrained in two directions, that is, in the horizontal direction and the vertical direction.Type: GrantFiled: July 10, 2012Date of Patent: April 7, 2015Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Makoto Motozu, Teruo Irino, Kouhei Urase, Yuuki Umizaki, Toshihiro Sako
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Publication number: 20140350800Abstract: A control device for driving/controlling an engine on the basis of a signal from a temperature state detector, a rotation detector, and a rotational speed setting device is provided. The control device includes a start temperature determining processing unit configured to determine whether or not a temperature (T) at start of the engine is less than a predetermined temperature (Tw1) and a start control processing is performed in accordance with a set value of a target rotational speed (Nset) by the rotational speed setting device in case the start temperature (T) is equal to or less than the predetermined temperature (Tw1). This suppresses occurrence of cavitation by stopping the start of the engine (10) within a range in which the temperature (T) is equal to or lower than the predetermined temperature (Tw1) and the target rotational speed (Nset) of the engine (10) is higher than a predetermined threshold value (Nca).Type: ApplicationFiled: January 9, 2013Publication date: November 27, 2014Inventors: Hajime Yoshida, Shuuhei Noguchi, Makoto Motozu
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Publication number: 20140017054Abstract: On a revolving frame (5), an operating oil tank (15) located on the front side of an engine (8) is provided, and a fuel tank (16) located on the front side of the operating oil tank (15) is arranged. A mounting member (17) is provided on the lower side of the fuel tank (16) across a part of a swing cylinder (14). Between the operating oil tank (15) and the mounting member (17), a vertical restraining element (20) for restraining the fuel tank (16) in a front-rear direction and a vertical direction and a lateral restraining element (25) for restraining the fuel tank (16) in a left-right direction are detachably provided. Therefore, the fuel tank (16) can be restrained in two directions, that is, in the horizontal direction and the vertical direction.Type: ApplicationFiled: July 10, 2012Publication date: January 16, 2014Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.Inventors: Makoto Motozu, Teruo Irino, Kouhei Urase, Yuuki Umizaki, Toshihiro Sako
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Patent number: 8413676Abstract: A hose looping supporter (21) is provided on an upper surface (13A) of a lid (13) of a tank body (12) constituting an operating oil tank (11). This hose looping supporter (21) is constituted by a mounting member (22) mounted on the lid (13) and four retaining arms (23) each bent in a substantially J-shape. A suction hose (19) has its midway portion adapted to be looped annularly, and this looped hose portion (19B) is mounted by being held looped by each revolving frame (23). Meanwhile, in the case of replenishing a fuel tank (15) with fuel, the suction hose (19) can be easily removed from each retaining arm (23) of the hose looping supporter (21) by reducing the diameter of the looped hose portion (19B) of the suction hose (19).Type: GrantFiled: July 22, 2008Date of Patent: April 9, 2013Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Yuuki Umizaki, Yasutaka Tsuruga, Teruo Irino, Makoto Motozu
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Publication number: 20100236642Abstract: A hose looping supporter (21) is provided on an upper surface (13A) of a lid (13) of a tank body (12) constituting an operating oil tank (11). This hose looping supporter (21) is constituted by a mounting member (22) mounted on the lid (13) and four retaining arms (23) each bent in a substantially J-shape. A suction hose (19) has its midway portion adapted to be looped annularly, and this looped hose portion (19B) is mounted by being held looped by each revolving frame (23) . Meanwhile, in the case of replenishing a fuel tank (15) with fuel, the suction hose (19) can be easily removed from each retaining arm (23) of the hose looping supporter (21) by reducing the diameter of the looped hose portion (19B) of the suction hose (19).Type: ApplicationFiled: July 22, 2008Publication date: September 23, 2010Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.Inventors: Yuuki Umizaki, Yasutaka Tsuruga, Teruo Irino, Makoto Motozu
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Patent number: 6922925Abstract: A construction machine of the present invention is provided, in a compartment formed by a cover, with an engine, a centrifugal fan, and a heat exchanger for exchanging heat between cooling air blown by the centrifugal fan and a specified medium, wherein the centrifugal fan and the heat exchanger are arranged further upstream than the engine with respect to flow of cooling air, so that cooling air sucked in by the centrifugal fan is led to the engine after passing through the heat exchanger.Type: GrantFiled: November 29, 2001Date of Patent: August 2, 2005Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Osamu Watanabe, Seiichiro Takeshita, Takaharu Nishimura, Kazuyoshi Yamada, Makoto Sugaya, Makoto Motozu, Naohiro Ishikawa, Shougo Kimura
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Publication number: 20030110669Abstract: A construction machine of the present invention is provided, in a compartment formed by a cover, with an engine, a centrifugal fan, and a heat exchanger for exchanging heat between cooling air blown by the centrifugal fan and a specified medium, wherein the centrifugal fan and the heat exchanger are arranged further upstream than the engine with respect to flow of cooling air, so that cooling air sucked in by the centrifugal fan is led to the engine after passing through the heat exchanger.Type: ApplicationFiled: October 15, 2002Publication date: June 19, 2003Inventors: Osamu Watanabe, Seiichiro Takeshita, Takaharu Nishimura, Kazuyoshi Yamada, Makoto Sugaya, Makoto Motozu, Naohiro Ishikawa, Shougo Kimura
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Patent number: D684598Type: GrantFiled: November 8, 2012Date of Patent: June 18, 2013Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Shigehisa Hagura, Tomoyuki Miyata, Kazuhiko Hiraoka, Akira Saito, Teruo Irino, Makoto Motozu, Seiichi Kihara, Tomoyuki Tanaka
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Patent number: D684603Type: GrantFiled: November 8, 2012Date of Patent: June 18, 2013Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Shigehisa Hagura, Kazuhiko Hiraoka, Tomoyuki Miyata, Akira Saito, Makoto Motozu, Seiichi Kihara, Yuuki Umizaki
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Patent number: D684605Type: GrantFiled: November 8, 2012Date of Patent: June 18, 2013Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Shigehisa Hagura, Tomoyuki Miyata, Makoto Motozu, Yuuki Umizaki
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Patent number: D684606Type: GrantFiled: November 8, 2012Date of Patent: June 18, 2013Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Shigehisa Hagura, Tomoyuki Miyata, Teruo Irino, Makoto Motozu, Seiichi Kihara
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Patent number: D685008Type: GrantFiled: November 8, 2012Date of Patent: June 25, 2013Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Shigehisa Hagura, Kazuhiko Hiraoka, Tomoyuki Miyata, Akira Saito, Teruo Irino, Makoto Motozu
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Patent number: D686642Type: GrantFiled: November 8, 2012Date of Patent: July 23, 2013Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Kohei Urase, Katsuhiro Sasaki, Makoto Motozu, Yuuki Umizaki, Seiichi Kihara