Patents by Inventor Masao Nagata
Masao Nagata 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).
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
Patent number: 6669272Abstract: A cabin of a rearward small-turn backhoe having a portion of a turn frame (2) excluding a working machine mounting part (1) formed generally in circular shape and formed so that the diameter thereof is stored generally within the width of a traveling device (1), wherein the rear part of the cabin (8) is formed in a curved shape generally along the outer peripheral form of the turn frame (2) as viewed from a horizontal plane, at least a side face of the cabin is formed in a polygonal shape, and two faces of the polygonal shape adjacent to each other are formed in a foldable door (15a, 15b), whereby an indoor space can be increased over a conventional one to improve comfortability, and a controllability can be improved because a lever operation can be performed in a roomy space.Type: GrantFiled: September 17, 2002Date of Patent: December 30, 2003Assignees: Yanmar Co., Ltd., Seirei Industry Co., Ltd.Inventors: Hiroaki Ayabe, Masami Miyanishi, Takaaki Kuroda, Masao Nagata
-
Publication number: 20030047965Abstract: A cabin of a rearward small-turn backhoe having a portion of a turn frame (2) excluding a working machine mounting part (1) formed generally in circular shape and formed so that the diameter thereof is stored generally within the width of a traveling device (1), wherein the rear part of the cabin (8) is formed in a curved shape generally along the outer peripheral form of the turn frame (2) as viewed from a horizontal plane, at least a side face of the cabin is formed in a polygonal shape, and two faces of the polygonal shape adjacent to each other are formed in a foldable door (15a, 15b), whereby an indoor space can be increased over a conventional one to improve comfortability, and a controllability can be improved because a lever operation can be performed in a roomy space.Type: ApplicationFiled: September 17, 2002Publication date: March 13, 2003Inventors: Hiroaki Ayabe, Masami Miyanishi, Takaaki Kuroda, Masao Nagata
-
Patent number: 6004649Abstract: A sheet comprising a net-like structure, being coated with a dark paint on the rear surface side, and being provided with a description including characters, pictures or the like on the front surface side.Type: GrantFiled: July 30, 1996Date of Patent: December 21, 1999Inventor: Masao Nagata
-
Patent number: D458941Type: GrantFiled: October 17, 2001Date of Patent: June 18, 2002Assignees: Yanmar Diesel Engine Co., Seirei Industry Co., Ltd.Inventors: Masami Miyanishi, Takuzou Kawamura, Hiroaki Ayabe, Masao Nagata
-
Patent number: D460462Type: GrantFiled: December 28, 2000Date of Patent: July 16, 2002Assignees: Yanmar Diesel Engine Co., Ltd., Seirei Industry Co., Ltd.Inventors: Masami Miyanishi, Takuzou Kawamura, Hiroaki Ayabe, Masao Nagata
-
Patent number: D594883Type: GrantFiled: October 18, 2007Date of Patent: June 23, 2009Assignee: Yanmar Co., Ltd.Inventors: Takahiro Ikeda, Saizou Kondou, Takafumi Nobayashi, Keiichi Nishihara, Masao Nagata
-
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
-
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