Patents by Inventor Takanori Okubo
Takanori Okubo 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: 9623463Abstract: The pump discharge volume of a bi-directional piston pump is set to a reference pump discharge volume Qa in condition where the actuation state of lift cylinders is a no-load state, and is set to a small-discharge pump discharge volume Qb smaller than the reference pump discharge volume Qa in condition where the actuation state of the lift cylinders is a high-load state. Qb·Pb which is the product of the pump discharge volume Qb and a pump discharge pressure Pb of the bi-directional piston pump in condition where the actuation state of the lift cylinders is the high-load state is set to be equal to or less than or approximately equal to a Qa·Pa which is the product of the pump discharge volume Qa and a pump discharge pressure Pa of the bi-directional piston pump in condition where the actuation state of the lift cylinders is the no-load state.Type: GrantFiled: October 4, 2013Date of Patent: April 18, 2017Assignee: AMADA COMPANY, LIMITEDInventors: Tomohiro Yukita, Akira Nakamura, Takanori Okubo
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Publication number: 20150273554Abstract: The pump discharge volume of a bi-directional piston pump is set to a reference pump discharge volume Qa in condition where the actuation state of lift cylinders is a no-load state, and is set to a small-discharge pump discharge volume Qb smaller than the reference pump discharge volume Qa in condition where the actuation state of the lift cylinders is a high-load state. Qb·Pb which is the product of the pump discharge volume Qb and a pump discharge pressure Pb of the bi-directional piston pump in condition where the actuation state of the lift cylinders is the high-load state is set to be equal to or less than or approximately equal to a Qa·Pa which is the product of the pump discharge volume Qa and a pump discharge pressure Pa of the bi-directional piston pump in condition where the actuation state of the lift cylinders is the no-load state.Type: ApplicationFiled: October 4, 2013Publication date: October 1, 2015Applicant: AMADA COMPANY, LIMITEDInventors: Tomohiro Yukita, Akira Nakamura, Takanori Okubo
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Patent number: 9065370Abstract: Provided is a wind power generation apparatus to which general purpose inverters are applicable. An inverter in a constant-voltage mode is used. While a wind power generator is generating electricity, switching circuits are turned on and off at a controlled duty cycles to intermittently short-circuit an armature winding, boosting the voltage and controlling the rotational speed of a windmill rotating blade, with the result that the voltage applied to the inverter is made constant. At the activation, in order to prevent an excessive voltage from being generated while an inverter is changing from the stand-by state to the activated state, ON/OFF control of a switching circuit is performed to switch between the output voltage of a rectifier and the voltage generated at a resistor, with the result that the voltage is controlled and maintained at an appropriate value.Type: GrantFiled: September 14, 2010Date of Patent: June 23, 2015Inventors: Ryosuke Ito, Takanori Okubo, Tadaaki Chikashige, Takashi Yamazaki, Hikaru Matsumiya
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Publication number: 20130009397Abstract: Provided is a wind power generation apparatus to which general purpose inverters are applicable. An inverter in a constant-voltage mode is used. While a wind power generator is generating electricity, switching circuits are turned on and off at a controlled duty cycles to intermittently short-circuit an armature winding, boosting the voltage and controlling the rotational speed of a windmill rotating blade, with the result that the voltage applied to the inverter is made constant. At the activation, in order to prevent an excessive voltage from being generated while an inverter is changing from the stand-by state to the activated state, ON/OFF control of a switching circuit is performed to switch between the output voltage of a rectifier and the voltage generated at a resistor, with the result that the voltage is controlled and maintained at an appropriate value.Type: ApplicationFiled: September 14, 2010Publication date: January 10, 2013Applicant: Zephyr CorporationInventors: Ryosuke Ito, Takanori Okubo, Tadaaki Chikashige, Takashi Yamazaki, Hikaru Matsumiya
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Publication number: 20120061966Abstract: A wind power generation control device which controls a wind power generator using a wind turbine blade having a fixed pitch angle is provided.Type: ApplicationFiled: May 28, 2010Publication date: March 15, 2012Applicant: Zephyr Corporation c/o Zephyr CorporationInventors: Ryosuke Ito, Takanori Okubo, Tadaaki Chikashige, Takashi Yamazaki, Hikaru Matsumiya
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Patent number: 7901341Abstract: In a bending apparatus which moves one of upper and lower tables (9, 10), and performs bending on a workpiece (W) by tools (P, D) attached to the upper and lower tables (9, 10), a tool group including a plurality of split tools is transferred to the upper and lower table (9, 10), a plurality of process stations are formed by splitting the transferred tool into a plurality of tool groups based on automatically or manually determined tool-layout information, and then bending is carried out.Type: GrantFiled: June 22, 2004Date of Patent: March 8, 2011Assignee: Amada Company, LtdInventors: Masayuki Shimizu, Hidekatsu Ikeda, Takanori Okubo, Akio Kammuri, Hisashi Uto
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Patent number: 7818985Abstract: A bending apparatus is provided with a ram start-up device so as to be movable in a lateral direction. A controller moves the ram start-up device to a point in front of positioning points of abutments corresponding to points of selected edges of a workpiece. The bending apparatus includes a foreign object detector that detects the entry of a foreign object into a region of movement of the ram start-up device. A controller prevents the ram start-up device from moving when the entry of the foreign object is detected.Type: GrantFiled: March 28, 2005Date of Patent: October 26, 2010Assignee: Amada Company, Ltd.Inventors: Hidekatsu Ikeda, Takanori Okubo, Kazuhiro Kanno, Hisashi Uto
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Publication number: 20090024246Abstract: A bending apparatus is provided with a ram start-up device so as to be movable in a lateral direction. A controller moves the ram start-up device to a point in front of positioning points of abutments corresponding to points of selected edges of a workpiece. The bending apparatus includes a foreign object detector that detects the entry of a foreign object into a region of movement of the ram start-up device. A controller prevents the ram start-up device from moving when the entry of the foreign object is detected.Type: ApplicationFiled: March 28, 2005Publication date: January 22, 2009Applicant: AMADA CO., LTD.Inventors: Hidekatsu Ikeda, Takanori Okubo, Kazuhiro Kanno, Hisashi Uto
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Publication number: 20070271987Abstract: In a bending apparatus which moves one of upper and lower tables (9, 10), and performs bending on a workpiece (W) by tools (P, D) attached to the upper and lower tables (9, 10), a tool group including a plurality of split tools is transferred to the upper and lower table (9, 10), a plurality of process stations are formed by splitting the transferred tool into a plurality of tool groups based on automatically or manually determined tool-layout information, and then bending is carried out.Type: ApplicationFiled: June 22, 2004Publication date: November 29, 2007Applicant: AMADA COMPANY, LIMITEDInventors: Masayuki Shimizu, Hidekatsu Ikeda, Takanori Okubo, Akio Kammuri, Hisashi Uto
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Patent number: 6823708Abstract: A computer readable recording medium which stores control data to control the action of a sheet metal bending system which is provided with a press brake and a sheet metal support device, where the press brake is provided with a punch and die which bends the sheet metal along the bending line by approaching to and parting from each other, and a back gauge to determine the position of the sheet metal against the punch and die, the sheet metal support apparatus is provided with a support arm which supports the sheet metal and may be rotated freely centered on the rotation axis which is parallel to the bending axis, the control data is a control data to control the bending process which includes a plurality of bending processes to produce sheet metal parts (parts) with a plurality of bending lines by the press brake and sheet metal support device by controlling the approach and parting motion of the punch and die and at least the rotational motion of the support arm, and the control data is related to the sheetType: GrantFiled: January 11, 2002Date of Patent: November 30, 2004Assignee: Amada Company LimitedInventor: Takanori Okubo