Patents by Inventor Jiro Kondo
Jiro Kondo 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: 10968974Abstract: A damper includes: a line-shaped member wound around an outer peripheral surface of a piston which makes a relative motion in a cylinder; and a viscous fluid made to adhere to the line-shaped member and exhibiting viscous damping force. The relative motion of the cylinder and the piston produces tension, and in the line-shaped member, as an amplitude is smaller, its contiguously wound portions each try to deform to twist along a circumferential direction of the line-shaped member itself, and as the amplitude is larger, the contiguously wound portions try to deform as a unit. When the amplitude is small, frictional resistance decreases, resulting in smooth motion of the piston, and appropriate damping force is obtained due to the viscous damping force of the viscous fluid. When the amplitude is large, as a result of the increased tendency that the contiguously wound portions of the line-shaped member try to deform as a unit, friction damping force acts relatively greatly.Type: GrantFiled: August 4, 2017Date of Patent: April 6, 2021Assignee: DELTA TOOLING CO., LTD.Inventors: Etsunori Fujita, Yumi Ogura, Ryuji Kuwano, Jiro Kondo, Jun Fukuda
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Publication number: 20200271181Abstract: A damper includes: a line-shaped member wound around an outer peripheral surface of a piston which makes a relative motion in a cylinder; and a viscous fluid made to adhere to the line-shaped member and exhibiting viscous damping force. The relative motion of the cylinder and the piston produces tension, and in the line-shaped member, as an amplitude is smaller, its contiguously wound portions each try to deform to twist along a circumferential direction of the line-shaped member itself, and as the amplitude is larger, the contiguously wound portions try to deform as a unit. When the amplitude is small, frictional resistance decreases, resulting in smooth motion of the piston, and appropriate damping force is obtained due to the viscous damping force of the viscous fluid. When the amplitude is large, as a result of the increased tendency that the contiguously wound portions of the line-shaped member try to deform as a unit, friction damping force acts relatively greatly.Type: ApplicationFiled: August 4, 2017Publication date: August 27, 2020Applicant: DELTA TOOLING CO., LTD.Inventors: Etsunori FUJITA, Yumi OGURA, Ryuji KUWANO, Jiro KONDO, Jun FUKUDA
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Patent number: 10167199Abstract: Provided are: a method for manufacturing a highly pure silicon by unidirectional solidification of molten silicon, that can inexpensively and industrially easily manufacture highly pure silicon that has a low oxygen concentration and low carbon concentration and is suitable for applications such as manufacturing solar cells; highly pure silicon obtained by this method; and silicon raw material for manufacturing highly pure silicon. A method for manufacturing highly pure silicon using molten silicon containing 100 to 1000 ppmw of carbon and 0.5 to 2000 ppmw of germanium as the raw material when manufacturing highly pure silicon by unidirectionally solidifying molten silicon raw material in a casting container, the highly pure silicon obtained by this method, and the silicon raw material for manufacturing the highly pure silicon.Type: GrantFiled: March 8, 2012Date of Patent: January 1, 2019Assignee: Silicio Ferrosolar S.L.Inventors: Shinji Tokumaru, Masataka Hiyoshi, Jiro Kondo, Hitoshi Dohnomae, Yutaka Kishida, Shigeru Nakazawa, Kozo Onoue
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Patent number: 9624948Abstract: An oil control valve has a cup shaft and a plunger. The cup shaft and the plunger have a projection and a recess to provide a male-female joint. The male-female joint provides contact points which can reduce lateral offset and inclination. The projection and the recess provides two or more force transmitting points from the plunger to the cup shaft, when the projection and the recess are inclined with each other. The force transmitting points are located about the central axis of the spool in a distributed manner.Type: GrantFiled: July 10, 2014Date of Patent: April 18, 2017Assignee: DENSO CORPORATIONInventors: Masahiko Ochiai, Jiro Kondo
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Patent number: 9349515Abstract: A linear solenoid includes a movable element, a first stator element, a second stator element, a third stator element, a cover and a through hole. The third stator element has an opening formed on a thrust direction side of the third stator element. The cover covers the opening of the third stator element from the thrust direction side of an axial direction. The through hole passes through the third stator element. An inside of the third stator element is in fluid communication with an outside of the third stator element through the through hole.Type: GrantFiled: September 15, 2014Date of Patent: May 24, 2016Assignee: DENSO CORPORATIONInventor: Jiro Kondo
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Patent number: 9263931Abstract: An inner diameter of a third stator core is greater than an inner diameter of a second stator core. When a first stator core, the second stator core, and the third stator core are placed in an inner periphery of a coil, a jig is inserted from an inner-periphery opening of a first end side of the third stator core into the third stator core to directly position the first stator core, the second stator core, and the third stator core in a radial direction. Therefore, a side force generated by an axis deviation between the first stator core, the second stator core, and the third stator core can be reduced.Type: GrantFiled: September 15, 2014Date of Patent: February 16, 2016Assignee: DENSO CORPORATIONInventor: Jiro Kondo
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Patent number: 9086169Abstract: Drain oil is discharged into an oil drain passage from an advance angle port and discharge port, or from a delay angle port and discharge port; the drain oil may be mixed with foreign matter. The flow of such foreign matter accompanying the drain oil, even if flowing toward an electromagnetic actuator, can be hindered from reaching a high magnetic flux density portion by each of a pipe, a hollow shaft, and a collar. The high magnetic flux density portion, which is easy to be affected by influence of the foreign matter, can be prevented from suffering from the arrival of the foreign matter; this prevents an occurrence of the slide abrasion and/or the slide defect of a plunger, improving the reliability of an oil control valve.Type: GrantFiled: July 24, 2013Date of Patent: July 21, 2015Assignee: DENSO CORPORATIONInventor: Jiro Kondo
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Publication number: 20150082942Abstract: An objective of the present invention is, in refining a metal or a semiconductor melt, without impairing refining efficiency, to alleviate wear and tear commensurate with unevenness in a crucible caused by instability in melt flow, and to allow safe operation over long periods of time such that leakages from the crucible do not occur. Provided is a metal or semiconductor melt refining method, in which, by using an AC resistance heating heater as a crucible heating method, the melt is heat retained and mixed by a rotating magnetic field which is generated by the resistance heating heater.Type: ApplicationFiled: February 6, 2012Publication date: March 26, 2015Applicant: SILICIO FERROSOLAR S.L.Inventors: Yutaka Kishida, Hitoshi Dohnomae, Jiro Kondo, Kiyoshi Goto, Wataru Ohashi
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Publication number: 20150077204Abstract: A linear solenoid includes a movable element, a first stator element, a second stator element, a third stator element, a cover and a through hole. The third stator element has an opening formed on a thrust direction side of the third stator element. The cover covers the opening of the third stator element from the thrust direction side of an axial direction. The through hole passes through the third stator element. An inside of the third stator element is in fluid communication with an outside of the third stator element through the through hole.Type: ApplicationFiled: September 15, 2014Publication date: March 19, 2015Inventor: Jiro KONDO
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Publication number: 20150076930Abstract: An inner diameter of a third stator core is greater than an inner diameter of a second stator core. When a first stator core, the second stator core, and the third stator core are placed in an inner periphery of a coil, a jig is inserted from an inner-periphery opening of a first end side of the third stator core into the third stator core to directly position the first stator core, the second stator core, and the third stator core in a radial direction. Therefore, a side force generated by an axis deviation between the first stator core, the second stator core, and the third stator core can be reduced.Type: ApplicationFiled: September 15, 2014Publication date: March 19, 2015Inventor: Jiro KONDO
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Publication number: 20150028268Abstract: Provided are a method for manufacturing a highly pure silicon by unidirectional solidification of molten silicon, that can inexpensively and industrially easily manufacture highly pure silicon that has a low oxygen concentration and low carbon concentration and is suitable for applications such as manufacturing solar cells; highly pure silicon obtained by this method and silicon raw material for manufacturing highly pure silicon. A method for manufacturing highly pure silicon using molten silicon containing 100 to 1000 ppmw of carbon and 0.5 to 2000 ppmw of germanium as the raw material when manufacturing highly pure silicon by unidirectionally solidifying molten silicon raw material in a casting container, the highly pure silicon obtained by this method, and the silicon raw material for manufacturing the highly pure silicon.Type: ApplicationFiled: March 8, 2012Publication date: January 29, 2015Applicant: SILICIO FERROSOLAR S.L.Inventors: Shinji Tokumaru, Masataka HIiyoshi, Jiro Kondo, Hitoshi Dohnomae, Yutaka Kishida, Shigeru Nakazawa, Kozo Onoue
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Publication number: 20150027573Abstract: An oil control valve has a cup shaft and a plunger. The cup shaft and the plunger have a projection and a recess to provide a male-female joint. The male-female joint provides contact points which can reduce lateral offset and inclination. The projection and The recess provides two or more force transmitting points from the plunger to the cup shaft, when the projection and the recess are inclined with each other. The force transmitting points are located about the central axis of the spool in a distributed manner.Type: ApplicationFiled: July 10, 2014Publication date: January 29, 2015Inventors: Masahiko OCHIAI, Jiro KONDO
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Patent number: 8882079Abstract: A stator is provided with a ring-shaped outer stator-projection and a ring-shaped inner stator-projection. A plunger is provided with a ring-shaped outer plunger-projection and a ring-shaped inner plunger-projection. A magnetic force is generated at three portions between the plunger and the stator. The inner stator-projection has a first tapered surface and the outer plunger-projection has a second tapered surface. The first tapered surface and the second tapered surface confront each other when the plunger moves toward the stator.Type: GrantFiled: September 11, 2012Date of Patent: November 11, 2014Assignee: Denso CorporationInventors: Jiro Kondo, Yoshiyuki Murao, Koichiro Matsumoto
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Publication number: 20140041742Abstract: Drain oil is discharged into an oil drain passage from an advance angle port and discharge port, or from a delay angle port and discharge port; the drain oil may be mixed with foreign matter. The flow of such foreign matter accompanying the drain oil, even if flowing toward an electromagnetic actuator, can be hindered from reaching a high magnetic flux density portion by each of a pipe, a hollow shaft, and a collar. The high magnetic flux density portion, which is easy to be affected by influence of the foreign matter, can be prevented from suffering from the arrival of the foreign matter; this prevents an occurrence of the slide abrasion and/or the slide defect of a plunger, improving the reliability of an oil control valve.Type: ApplicationFiled: July 24, 2013Publication date: February 13, 2014Applicant: DENSO CORPORATIONInventor: Jiro KONDO
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Publication number: 20140021386Abstract: A valve includes a valve housing and a linier solenoid. The linier solenoid includes a cylindrical yoke and is coupled with the valve. An open end of the yoke is crimped to a flanged crimping receiving part provided along an outer periphery of the valve housing, so that the linier solenoid and the valve are coupled together. The open end of the yoke includes a plurality of notches provided in a circumferential direction of the yoke, and the plurality of notches defines a plurality of crimping pieces. Each of the plurality of crimping pieces includes a large part and a small part. The large part is located on a base side of the each of the plurality of crimping pieces and has a larger circumferential width. The small part is located on an tip side of the each of the plurality of crimping pieces and has a smaller circumferential width.Type: ApplicationFiled: April 19, 2013Publication date: January 23, 2014Applicant: DENSO CORPORATIONInventors: Masahiko OCHIAI, Jiro KONDO
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Patent number: 8456262Abstract: An electromagnetic solenoid includes first and second stators arranged at two axial end sides of a coil. The first stator includes an annular radial core part, an axial core part cylindrically extending from an inner end of the radial core part toward the second stator, and a core corner part having an outer corner surface at an intersection of the radial and axial core parts. A plunger guide includes a cylindrical sleeve inward of the stators, a flange extending radially outward from the sleeve along a side of the radial core part opposed to the coil, and a plunger-guide corner part having an inner corner surface at an intersection of the sleeve and the flange. The outer and inner corner surfaces of the core corner part and the plunger-guide corner part abut on each other in a contact portion linearly or in area along an entire circumference.Type: GrantFiled: February 15, 2012Date of Patent: June 4, 2013Assignee: Denso CorporationInventor: Jiro Kondo
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Publication number: 20130068975Abstract: A stator is provided with a ring-shaped outer stator-projection and a ring-shaped inner stator-projection. A plunger is provided with a ring-shaped outer plunger -projection and a ring-shaped inner plunger-projection. A magnetic force is generated at three portions between the plunger and the stator. The inner stator-projection has a first tapered surface and the outer plunger-projection has a second tapered surface. The first tapered surface and the second tapered surface confront each other when the plunger moves toward the stator.Type: ApplicationFiled: September 11, 2012Publication date: March 21, 2013Applicant: DENSO CORPORATIONInventors: Jiro KONDO, Yoshiyuki MURAO, Koichiro MATSUMOTO
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Publication number: 20120212309Abstract: An electromagnetic solenoid includes first and second stators arranged at two axial end sides of a coil. The first stator includes an annular radial core part, an axial core part cylindrically extending from an inner end of the radial core part toward the second stator, and a core corner part having an outer corner surface at an intersection of the radial and axial core parts. A plunger guide includes a cylindrical sleeve inward of the stators, a flange extending radially outward from the sleeve along a side of the radial core part opposed to the coil, and a plunger-guide corner part having an inner corner surface at an intersection of the sleeve and the flange. The outer and inner corner surfaces of the core corner part and the plunger-guide corner part abut on each other in a contact portion linearly or in area along an entire circumference.Type: ApplicationFiled: February 15, 2012Publication date: August 23, 2012Applicant: DENSO CORPORATIONInventor: Jiro KONDO
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Patent number: 8034151Abstract: The present invention provides a method for removal of boron from metal silicon inexpensively and extremely efficiently by a simple method, specifically, heating metal silicon containing boron as an impurity to its melting point to 2200° C. to place it in a molten state, then adding a solid mainly comprised of silicon dioxide and a solid mainly comprised of one or both of a carbonate of an alkali metal or a hydrate of a carbonate of an alkali metal into said molten silicon so as to form a slag and remove the boron in the silicon.Type: GrantFiled: March 2, 2005Date of Patent: October 11, 2011Assignee: Nippon Steel CorporationInventors: Jiro Kondo, Kensuke Okazawa
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Patent number: 8006718Abstract: A sleeve has an input port, an output port, an insertion hole, and only one discharge port. A spool is axially slidable through the insertion hole to communicate among the input port, the output port, and the discharge port. An electric actuator is provided to one end of the sleeve and has a variable volume chamber, which communicates with the discharge port through an axial through hole and a spool breathing hole in the spool. The spool has a communication through hole to lead fluid from the output port to the discharge port through the axial through hole. A passage partition member is in the axial through hole to define an in-spool breathing passage communicating with the spool breathing hole.Type: GrantFiled: June 3, 2008Date of Patent: August 30, 2011Assignee: Denso CorporationInventors: Yasuhiro Hamaoka, Jiro Kondo