Patents by Inventor Kenta Saitou
Kenta Saitou 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: 10371027Abstract: An exhaust gas purification system of a working machine is operable to reduce a loss of a working time caused by a point that it takes a long time to renew an exhaust gas purification device by throttle devices. The exhaust gas purification system of the working machine is provided with a common rail type engine which is mounted to the working machine, an exhaust gas purification device which is arranged in an exhaust system of the engine, and at least one of the intake air throttle device and the exhaust gas throttle device. It is provided with mode selection input means which selects whether an auxiliary renewing mode is executed or a forced renewing mode is executed in the case that a clogged state of the exhaust gas purification device is equal to or more than a prescribed level.Type: GrantFiled: April 25, 2011Date of Patent: August 6, 2019Assignee: YANMAR CO., LTD.Inventor: Kenta Saitou
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Publication number: 20190010843Abstract: An exhaust gas purification system of a working machine is operable to reduce a loss of a working time caused by a point that it takes a long time to renew an exhaust gas purification device by throttle devices. The exhaust gas purification system of the working machine is provided with a common rail type engine which is mounted to the working machine, an exhaust gas purification device which is arranged in an exhaust system of the engine, and at least one of the intake air throttle device and the exhaust gas throttle device. It is provided with mode selection input means which selects whether an auxiliary renewing mode is executed or a forced renewing mode is executed in the case that a clogged state of the exhaust gas purification device is equal to or more than a prescribed level.Type: ApplicationFiled: April 25, 2011Publication date: January 10, 2019Inventor: Kenta SAITOU
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Patent number: 9222381Abstract: An engine device in which a support structure of an exhaust throttle device can be made as a high rigidity structure, and it is possible to prevent the exhaust throttle device from being heated by radiation heat from peripheries of the exhaust throttle device. The engine device of the invention includes an engine having an exhaust manifold, and the exhaust throttle device adjusts exhaust gas pressure of the exhaust manifold An exhaust gas intake side of a throttle valve case of the exhaust throttle device is fastened to an exhaust gas outlet of the exhaust manifold, and an exhaust gas pipe is connected to the exhaust manifold through the throttle valve case. An intermediate portion of a cooling pipe of an EGR cooler is provided with a cooling water pipe of the exhaust throttle device.Type: GrantFiled: January 18, 2013Date of Patent: December 29, 2015Assignee: Yanmar Co., Ltd.Inventors: Kenta Saitou, Masayuki Yamada, Masataka Mitsuda, Shigehito Yoshimura
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Patent number: 9188089Abstract: Provided is an engine apparatus that ensures highly accurate adjustment of the exhaust gas pressure of an exhaust manifold while providing an exhaust gas throttle device with a support structure of increased rigidity. The engine apparatus includes: an engine including the exhaust manifold; and the exhaust gas throttle device to adjust an exhaust gas pressure of the exhaust manifold. An exhaust gas intake side of a throttle valve easing of the exhaust gas throttle device is fastened to an exhaust gas exit of the exhaust manifold. An exhaust pipe is coupled to the exhaust manifold through the throttle valve casing.Type: GrantFiled: December 26, 2012Date of Patent: November 17, 2015Assignee: Yanmar Co., Ltd.Inventors: Masataka Mitsuda, Kenta Saitou, Takayuki Onodera
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Publication number: 20140366516Abstract: Provided is an engine apparatus that ensures highly accurate adjustment of the exhaust gas pressure of an exhaust manifold while providing an exhaust gas throttle device with a support structure of increased rigidity. The engine apparatus includes: an engine including the exhaust manifold; and the exhaust gas throttle device to adjust an exhaust gas pressure of the exhaust manifold. An exhaust gas intake side of a throttle valve easing of the exhaust gas throttle device is fastened to an exhaust gas exit of the exhaust manifold. An exhaust pipe is coupled to the exhaust manifold through the throttle valve casing.Type: ApplicationFiled: December 26, 2012Publication date: December 18, 2014Inventors: Masataka Mitsuda, Kenta Saitou, Takayuki Onodera
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Publication number: 20140360172Abstract: It is an object of the present invention to provide an engine device in which a support structure of an exhaust throttle device can be made as a high rigidity structure, and it is possible to prevent the exhaust throttle device from being heated by radiation heat from peripheries of the exhaust throttle device. The engine device of the invention includes an engine (1) having an exhaust manifold (7), and the exhaust throttle device (65) adjusts exhaust gas pressure of the exhaust manifold (7). An exhaust gas intake side of a throttle valve case (68) of the exhaust throttle device (65) is fastened to an exhaust gas outlet, of the exhaust manifold (7), and an exhaust gas pipe (72) is connected to the exhaust manifold (7) through the throttle valve case (68). An intermediate portion of a cooling pipe of an EGR cooler (29) is provided with a cooling water pipe of the exhaust throttle device (65).Type: ApplicationFiled: January 18, 2013Publication date: December 11, 2014Applicant: Yanmar Co., Ltd.Inventors: Kenta Saitou, Masayuki Yamada, Masataka Mitsuda, Shigehito Yoshimura
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Patent number: 8039409Abstract: The present invention provides a TiO2-containing silica glass from which a transparent extremely low thermal expansion glass having excellent transparency and having a temperature region in which the coefficient of thermal expansion is substantially zero can be obtained. The present invention relates to a TiO2-containing silica glass for optical member for EUV lithography, having a TiO2 concentration of from 3 to 14% by mass; an internal transmittance per 1-mm thickness in a wavelength region of from 400 to 700 nm, T400-700, of 97% or more; and an internal transmittance per 1-mm thickness in a wavelength region of from 400 to 3,000 nm, T400-3,000, of 70% or more.Type: GrantFiled: October 14, 2010Date of Patent: October 18, 2011Assignee: Asahi Glass Company, LimitedInventors: Kenta Saitou, Akio Koike, Mitsuhiro Kawata
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Publication number: 20110028299Abstract: The present invention provides a TiO2-containing silica glass from which a transparent extremely low thermal expansion glass having excellent transparency and having a temperature region in which the coefficient of thermal expansion is substantially zero can be obtained. The present invention relates to a TiO2-containing silica glass for optical member for EUV lithography, having a TiO2 concentration of from 3 to 14% by mass; an internal transmittance per 1-mm thickness in a wavelength region of from 400 to 700 nm, T400-700, of 97% or more; and an internal transmittance per 1-mm thickness in a wavelength region of from 400 to 3,000 nm, T400-3000, of 70% or more.Type: ApplicationFiled: October 14, 2010Publication date: February 3, 2011Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Kenta SAITOU, Akio Koike, Mitsuhiro Kawata
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Patent number: D489076Type: GrantFiled: November 21, 2002Date of Patent: April 27, 2004Assignee: Yanmar Co., Ltd.Inventors: Akira Hiraiwa, Kenta Saitou, Atsushi Yoshimura