Patents by Inventor Yasuyuki Oyamada
Yasuyuki Oyamada 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: 20230243124Abstract: A construction machine includes a movable portion provided on an upper surface of a hood and pivotable along the upper surface of the hood, a fixer fixed to the upper surface of the hood to restrict a pivoting range of the movable portion, and a console supported by the movable portion. The construction machine further includes a guide to connect the movable portion to the fixer and guide the movable portion in a predetermined pivoting direction. The movable portion 6 has an opening whose dimension in the pivoting direction is larger than that of the fixer, and the fixer is located in the opening.Type: ApplicationFiled: January 31, 2023Publication date: August 3, 2023Applicant: Yanmar Holdings Co., Ltd.Inventors: Motoharu OTSU, Yasuyuki OYAMADA, Katsumi BABA
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Publication number: 20230235538Abstract: A work vehicle includes a hydraulic oil tank that tanks a hydraulic oil, a hydraulic pump connected via a first hydraulic hose to the hydraulic oil tank, and a hydraulic equipment connected via a second hydraulic hose to the hydraulic pump. The hydraulic pump is placed in a position higher than a liquid level of the hydraulic oil in the hydraulic oil tank. At least part of the second hydraulic hose is placed in a position lower than the liquid level.Type: ApplicationFiled: January 25, 2023Publication date: July 27, 2023Applicant: Yanmar Holdings Co., Ltd.Inventors: Shunsuke Minematsu, Katsuyoshi Tsujimura, Motoharu Otsu, Yasuyuki Oyamada, Daichi Kotani
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Patent number: 7958693Abstract: In a boom 15 for a working machine 10 attached to an upper rotational body 30 supported on a center of an upper portion of a crawler-type traveling device 40 to be transversely rotatable, the boom 15 includes, as portions cast by integral molding, a boom support point part 16, a boom cylinder rod support point part 18, and an arm support point part 19, and is configured so that the boom support point part 16 is connected to the boom cylinder rod support point part 18 by a general-purpose first rectangular pipe 61, and so that the boom cylinder rod support point part 18 is connected to the arm support point part 19 by a general-purpose second rectangular pipe 62.Type: GrantFiled: August 25, 2006Date of Patent: June 14, 2011Assignee: Yanmar Co., Ltd.Inventors: Yasuyuki Oyamada, Keiichi Nishihara, Takahiro Ikeda, Takafumi Nobayashi, Masao Nagata, Saizou Kondou, Masami Miyanishi
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Patent number: 7874392Abstract: It is an object of the present invention to provide a cover for a power shovel which can be manufactured at a low cost by reducing the number of parts and production man-hours and can be improved in maintainability. In the power shovel 50 which include an upper revolution structure (10) having: a body frame (11), a seat support stand (13) disposed at the rear of the body frame (11) and covering an upper part of the engine, and a device frame (12) disposed on a front part of the body frame (11) and storing hydraulic devices, side and a rear parts of the seat support stand (13) and the side part between the device frame (12) and the body frame (11) are covered by left and right side-covers (14) and (15) and a rear cover (16).Type: GrantFiled: August 25, 2006Date of Patent: January 25, 2011Assignee: Yanmar Co., Ltd.Inventors: Takafumi Nobayashi, Yasuyuki Oyamada, Takahiro Ikeda, Keiichi Nishihara, Masao Nagata, Saizou Kondou, Masami Miyanishi
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Patent number: 7857083Abstract: An objective of the present invention is to provide a counterweight of a power shovel interchangeable with that of a superordinate model without affecting a rear end radius of the shovel at the time of rotation. In the power shovel 50 in which the counterweight is formed at the rear part of a vehicle body frame 11 extended from a front end to a rear end of a lower part of a rotation upper body 10, and an engine 14 is mounted on the rear part of the vehicle body frame 11, an additional weight 12 is placed in a space between the rear part of the vehicle body frame 11 and the engine 14.Type: GrantFiled: August 25, 2006Date of Patent: December 28, 2010Assignee: Yanmar Co., Ltd.Inventors: Yasuyuki Oyamada, Keiichi Nishihara, Takahiro Ikeda, Takafumi Nobayashi, Masao Nagata, Saizou Kondou, Masami Miyanishi
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Publication number: 20090129908Abstract: An object of the present invention is to reduce manufacturing cost and manufacturing man-hour of an arm constituting a working machine in an excavation machine. In an arm 20 of a working machine 10 attached to an upper rotational body 30 supported on a center of an upper portion of a crawler-type traveling device 40 to be transversely rotatable, the arm 20 includes, as portions cast by integral molding, an arm support point part 21, a bucket support point part 24, and a bucket cylinder bottom support point part 22, and is configured so that the arm support point part 21 is connected to the bucket support point part 24 by a general-purpose rectangular pipe 28 and so that the bucket cylinder bottom support point part 22 is fixedly provided on an upper surface of the general-purpose rectangular pipe 28.Type: ApplicationFiled: August 25, 2006Publication date: May 21, 2009Applicant: Yanmar Co, Ltd.Inventors: Yasuyuki Oyamada, Keiichi Nishihara, Takahiro Ikeda, Takafumi Nobayashi, Masao Nagata, Saizou Kondou, Masami Miyanishi
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Publication number: 20090104011Abstract: An objective of the present invention is to provide a counterweight of a power shovel interchangeable with that of a superordinate model without affecting a rear end radius of the shovel at the time of rotation. In the power shovel 50 in which the counterweight is formed at the rear part of a vehicle body frame 11 extended from a front end to a rear end of a lower part of a rotation upper body 10, and an engine 14 is mounted on the rear part of the vehicle body frame 11, an additional weight 12 is placed in a space between the rear part of the vehicle body frame 11 and the engine 14.Type: ApplicationFiled: August 25, 2006Publication date: April 23, 2009Applicant: YANMAR CO., LTD.Inventors: Yasuyuki Oyamada, Keiichi Nishihara, Takahiro Ikeda, Takafumi Nobayashi, Masao Nagata, Saizou Kondou, Masami Miyanishi
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Publication number: 20090084003Abstract: It is an object of the present invention to provide a cover for a power shovel which can be manufactured at a low cost by reducing the number of parts and production man-hours and can be improved in maintenability. In the power shovel 50 which include an upper revolution structure (10) having: a body frame (11), a seat support stand (13) disposed at the rear of the body frame (11) and covering an upper part of the engine, and a device frame (12) disposed on a front part of the body frame (11) and storing hydraulic devices, side and a rear parts of the seat support stand (13) and the side part between the device frame (12) and the body frame (11) are covered by left and right side-covers (14) and (15) and a rear cover (16).Type: ApplicationFiled: August 25, 2006Publication date: April 2, 2009Applicant: YANMAR CO., LTD.Inventors: Takafumi Nobayashi, Yasuyuki Oyamada, Takahiro Ikeda, Keiichi Nishihara, Masao Nagata, Saizou Kondou, Masami Miyanishi
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Publication number: 20090078667Abstract: In a boom 15 for a working machine 10 attached to an upper rotational body 30 supported on a center of an upper portion of a crawler-type traveling device 40 to be transversely rotatable, the boom 15 includes, as portions cast by integral molding, a boom support point part 16, a boom cylinder rod support point part 18, and an arm support point part 19, and is configured so that the boom support point part 16 is connected to the boom cylinder rod support point part 18 by a general-purpose first rectangular pipe 61, and so that the boom cylinder rod support point part 18 is connected to the arm support point part 19 by a general-purpose second rectangular pipe 62.Type: ApplicationFiled: August 25, 2006Publication date: March 26, 2009Applicant: Yanmar Co., Ltd.Inventors: Yasuyuki Oyamada, Keiichi Nishihara, Takahiro Ikeda, Takafumi Nobayashi, Masao Nagata, Saizou Kondou, Masami Miyanishi
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Patent number: 6729831Abstract: An extremely-small-swing working machine, comprising an operator cabin mounted on a swing table and a working arm device having a first boom section installed on the swing table on either one of the right and left sides of the cabin, a second boom section connected to the first boom section through a lower rotating shaft, a third boom section connected to the second boom section through an upper rotating shaft generally in parallel with the lower rotating shaft, an arm connected to the third boom section, and a working attachment connected to the tip of the arm, wherein the working attachment and the operation cab are formed so that they are not brought into contact with each other over the entire operating range of the working attachment without limiting or controlling the operation of the working attachment.Type: GrantFiled: May 15, 2001Date of Patent: May 4, 2004Assignee: Yanmar Co., Ltd.Inventors: Takuzo Kawamura, Hiroyuki Ohtsuki, Kazuya Hokimoto, Mineaki Ogata, Hisaji Amanuma, Yasuyuki Oyamada
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Patent number: D590847Type: GrantFiled: September 2, 2008Date of Patent: April 21, 2009Assignee: Yanmar Co., Ltd.Inventors: Kiyoshi Yonekura, Yasuyuki Oyamada, Hiroyuki Ootsuki, Masamitsu Uemura, Katashi Tanaka
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Patent number: D685394Type: GrantFiled: December 18, 2012Date of Patent: July 2, 2013Assignee: Yanmar Co., Ltd.Inventors: Masao Nagata, Yasuyuki Oyamada, Hideki Seino, Mineaki Ogata, Takaaki Kuroda, Takuzo Kawamura
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Patent number: D688713Type: GrantFiled: December 18, 2012Date of Patent: August 27, 2013Assignee: Yanmar Co., Ltd.Inventors: Hideki Seino, Yasuyuki Oyamada, Masao Nagata, Mineaki Ogata, Takaaki Kuroda, Takuzo Kawamura