Patents by Inventor Masaharu Okazaki
Masaharu Okazaki 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: 9752668Abstract: A differential device with a limited-slip differential mechanism in which, while preventing full compression of spring members to avoid problems resulting from it, the spring members are configured to be as small in diameter as possible to allow the pressure-contact surfaces of a differential case to be wide for clutch plates, whereby it is possible to prevent problems such as a local increase in surface pressure between the clutch plates and scratches on the clutch plates caused by the inner peripheral edges of the pressure-contact surfaces, and achieve improvement in durability of the differential device.Type: GrantFiled: July 23, 2015Date of Patent: September 5, 2017Assignee: OS GIKEN, CO., LTD.Inventor: Masaharu Okazaki
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Publication number: 20160025202Abstract: The present invention is intended to provide a differential device with a limited-slip differential mechanism in which, while preventing full compression of spring members to avoid problems resulting from it, the spring members are configured to be as small in diameter as possible to allow the pressure-contact surfaces of a differential case to be wide for clutch plates, whereby it is possible to prevent problems such as a local increase in surface pressure between the clutch plates and scratches on the clutch plates caused by the inner peripheral edges of the pressure-contact surfaces, and achieve improvement in durability of the differential device.Type: ApplicationFiled: July 23, 2015Publication date: January 28, 2016Applicant: OS GIKEN CO., LTD.Inventor: Masaharu OKAZAKI
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Patent number: 8925704Abstract: The present invention is to provide a clutch device that keeps a half-clutch range wide for a long time. A clutch device 1 is arranged in such a manner that an intermediate ring 24 is disposed on the pressure plate 23 so as to be slightly movable in a direction of pressing by a diaphragm spring 21; air passageways 31 are radially disposed at regular circumferential intervals between the intermediate ring 24 and the pressure plate 23 so as to let the inner and outer peripheries communicate with each other; plate springs 25 are disposed in the air passageways 31 to bias constantly the intermediate ring 24 and the pressure plate 23 in a direction of separating from each other; and a force of the pressing operation by the diaphragm spring 21 is transferred to the pressure plate 23 via the intermediate ring 24 and the plate springs 25.Type: GrantFiled: May 11, 2010Date of Patent: January 6, 2015Assignee: OS Giken Co., Ltd.Inventor: Masaharu Okazaki
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Publication number: 20110272236Abstract: There is provided a clutch device in which a half clutch range can be set at a wide range and in which smoothness and quickness in the disconnection of the clutch can be dramatically improved and in which a shift operation can be performed smoothly and quickly.Type: ApplicationFiled: December 21, 2010Publication date: November 10, 2011Applicant: Os Giken Co., Ltd.Inventor: Masaharu OKAZAKI
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Publication number: 20100288596Abstract: The present invention is to provide a clutch device that keeps a half-clutch range wide for a long time. A clutch device 1 is arranged in such a manner that an intermediate ring 24 is disposed on the pressure plate 23 so as to be slightly movable in a direction of pressing by a diaphragm spring 21; air passageways 31 are radially disposed at regular circumferential intervals between the intermediate ring 24 and the pressure plate 23 so as to let the inner and outer peripheries communicate with each other; plate springs 25 are disposed in the air passageways 31 to bias constantly the intermediate ring 24 and the pressure plate 23 in a direction of separating from each other; and a force of the pressing operation by the diaphragm spring 21 is transferred to the pressure plate 23 via the intermediate ring 24 and the plate springs 25.Type: ApplicationFiled: May 11, 2010Publication date: November 18, 2010Applicant: OS GIKEN CO., LTD.Inventor: Masaharu Okazaki
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Patent number: 7625308Abstract: The invention provides a differential gear which can effectively prevent a drag noise of a clutch plate by a simple structure. In a differential gear (10) provided with a clutch means (16) having an inner pawl clutch plate (12) integrally rotating with a side gear (11), and an outer pawl clutch plate (14) integrally rotating with a differential case (13), a main communication path (41) and a radial communication path (44) communicating a bottom of the side gear (11) with a fitted portion (17) between the side gear (11) and the clutch plates (12, 14) is formed in the side gear (11), as a lubricating oil supplying means (40) for supplying a lubricating oil within the differential case (13) to a portion between sliding surfaces of both the clutch plates (12, 14) from the fitted portion (17) between the side gear (11) and the clutch plates (12, 14).Type: GrantFiled: December 13, 2006Date of Patent: December 1, 2009Assignee: OS Giken Co., Ltd.Inventor: Masaharu Okazaki
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Publication number: 20070135254Abstract: The invention provides a differential gear which can effectively prevent a drag noise of a clutch plate by a simple structure. In a differential gear (10) provided with a clutch means (16) having an inner pawl clutch plate (12) integrally rotating with a side gear (11), and an outer pawl clutch plate (14) integrally rotating with a differential case (13), a main communication path (41) and a radial communication path (44) communicating a bottom of the side gear (11) with a fitted portion (17) between the side gear (11) and the clutch plates (12, 14) is formed in the side gear (11), as a lubricating oil supplying means (40) for supplying a lubricating oil within the differential case (13) to a portion between sliding surfaces of both the clutch plates (12, 14) from the fitted portion (17) between the side gear (11) and the clutch plates (12, 14).Type: ApplicationFiled: December 13, 2006Publication date: June 14, 2007Applicant: OS GIKEN CO., LTD.Inventor: Masaharu Okazaki
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Patent number: 6949047Abstract: Differential gears which obtain adequate differential motion limiting action under heavy loading, and switch between a differential motion condition and a differential motion limiting condition, inside a differential case are provided a pair of left and right pressure rings, which move freely in the direction of the wheel axles but are incapable of relative turning, the inner diameter being larger than that of side gears; a pair of clutch means on the two pressure rings; urging means for urging the two pressure rings such that the two pressure rings clearance narrows; and actuation means for actuating the pressure rings against the force of the urging means, in accordance with the increases in the relative turning torque between the pinion shaft and the differential case during differential motion, and activating the clutch means.Type: GrantFiled: April 28, 2004Date of Patent: September 27, 2005Assignee: Os Giken Co., Ltd.Inventor: Masaharu Okazaki
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Publication number: 20050197514Abstract: The present invention is to provide a method for producing a highly branched perfluoroolefin conveniently in a high yield, a novel highly branched perfluoroolefin, a method for producing a super-stable perfluoroalkyl radical and a novel super-stable perfluoroalkyl radical. The present invention is a production method of a perfluoroolefin which comprises reacting a hexafluoropropene trimer with a trialkylperfluoroalkylsilane in an aprotic polar solvent using a fluoride ion as a catalyst.Type: ApplicationFiled: May 6, 2005Publication date: September 8, 2005Inventors: Taizo Ono, Masakazu Nishida, Masaharu Okazaki, Kazumi Toriyama, Tetsuo Shimizu
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Publication number: 20050077169Abstract: This invention relates to method for improving selectivity in liquid phase chemical reactions by flowing a reaction solution through a solution reaction column packed with particles having a multiplicity of nanometer-order pores, wherein the chemical reaction solution containing molecules to be reacted is flowed through mesopores having diameter on the order of several nanometers and length on the order of several ten nanometers, while simultaneously subjected to activating of the reaction thereof with reaction-initiating/accelerating means during the process; and a solution flow reaction system therefor.Type: ApplicationFiled: October 4, 2004Publication date: April 14, 2005Applicant: Japan as Rep. by Sec of Agncy of Ind Sci and TechInventors: Masaharu Okazaki, Yoshinari Konishi
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Publication number: 20040198546Abstract: Differential gears which obtain adequate differential motion limiting action under heavy loading, and switch between a differential motion condition and a differential motion limiting condition, inside a differential case are provided a pair of left and right pressure rings, which move freely in the direction of the wheel axles but are incapable of relative turning, the inner diameter being larger than that of side gears; a pair of clutch means on the two pressure rings; urging means for urging the two pressure rings such that the two pressure rings clearance narrows; and actuation means for actuating the pressure rings against the force of the urging means, in accordance with the increases in the relative turning torque between the pinion shaft and the differential case during differential motion, and activating the clutch means.Type: ApplicationFiled: April 28, 2004Publication date: October 7, 2004Applicant: OS GIKEN CO., LTD.Inventor: Masaharu Okazaki
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Publication number: 20040127756Abstract: The present invention is to provide a method for producing a highly branched perfluoroolefin conveniently in a high yield, a novel highly branched perfluoroolefin, a method for producing a super-stable perfluoroalkyl radical and a novel super-stable perfluoroalkyl radical.Type: ApplicationFiled: October 16, 2003Publication date: July 1, 2004Applicants: NATIONAL INSTITUTE OF ADVANCED IND. SCIENCE AND TECH., DAIKIN INDUSTRIES, LTD.Inventors: Taizo Ono, Masakazu Nishida, Masaharu Okazaki, Kazumi Toriyama, Tetsuo Shimizu
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Patent number: 6755764Abstract: Differential gears which obtain adequate differential motion limiting action under heavy loading, and switch between a differential motion condition and a differential motion limiting condition, inside a differential case are provided a pair of left and right pressure rings, which move freely in the direction of the wheel axles but are incapable of relative turning, the inner diameter being larger than that of side gears; a pair of clutch means on the two pressure rings; urging means for urging the two pressure rings such that the two pressure rings clearance narrows; and actuation means for actuating the pressure rings against the force of the urging means, in accordance with the increases in the relative turning torque between the pinion shaft and the differential case during differential motion, and activating the clutch means.Type: GrantFiled: March 12, 2002Date of Patent: June 29, 2004Assignee: OS Giken Co., Ltd.Inventor: Masaharu Okazaki
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Patent number: 6710214Abstract: The present invention is to provide a method for producing a highly branched perfluoroolefin conveniently in a high yield, a novel highly branched perfluoroolefin, a method for producing a super-stable perfluoroalkyl radical and a novel super-stable perfluoroalkyl radical. The present invention is a production method of a perfluoroolefin which comprises reacting a hexafluoropropene trimer with a trialkylperfluoroalkylsilane in an aprotic polar solvent using a fluoride ion as a catalyst.Type: GrantFiled: November 12, 2002Date of Patent: March 23, 2004Assignees: National Institute of Advanced Industrial Science and Technology, Daikin Industries, Ltd.Inventors: Taizo Ono, Masakazu Nishida, Masaharu Okazaki, Kazumi Toriyama, Tetsuo Shimizu
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Publication number: 20030097031Abstract: The present invention is to provide a method for producing a highly branched perfluoroolefin conveniently in a high yield, a novel highly branched perfluoroolefin, a method for producing a super-stable perfluoroalkyl radical and a novel super-stable perfluoroalkyl radical.Type: ApplicationFiled: November 12, 2002Publication date: May 22, 2003Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Taizo Ono, Masakazu Nishida, Masaharu Okazaki, Kazumi Toriyama, Tetsuo Shimizu
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Patent number: 6524211Abstract: A differential gear that can switch from differential movement state to limited differential movement has: a pair of pressure rings 12 in a differential case 11 able to move in the direction of the axles but unable to rotate relatively; clutches 16 on opposite sides of the pressure rings 12 that limit differential movement between the left and right axles 1 by limiting the relative rotation of the differential case 11 and side gears 15; the pressure rings 12 are urged so as to decrease the clearance 17 between the pressure rings 12 but the clearance is increased by relative rotation torque between the pinion shaft 13 and differential case 11 in a differential state.Type: GrantFiled: April 4, 2001Date of Patent: February 25, 2003Assignee: OS Giken Co., Ltd.Inventor: Masaharu Okazaki
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Publication number: 20020132694Abstract: Differential gears are provided with which adequate differential motion limiting action is obtained even under heavy loading, and which is capable of appropriately switching between a differential motion condition and a differential motion limiting condition.Type: ApplicationFiled: March 12, 2002Publication date: September 19, 2002Applicant: OS GIKEN CO., LTD.Inventor: Masaharu Okazaki
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Publication number: 20020048540Abstract: This invention relates to method for improving selectivity in liquid phase chemical reactions by flowing a reaction solution through a solution reaction column packed with particles having a multiplicity of nanometer-order pores, wherein the chemical reaction solution containing molecules to be reacted is flowed through mesopores having diameter on the order of several nanometers and length on the order of several ten nanometers, while simultaneously subjected to activating of the reaction thereof with reaction-initiating/accelerating means during the process; and a solution flow reaction system therefor.Type: ApplicationFiled: December 27, 2000Publication date: April 25, 2002Applicant: Japan as Represented by Secretary of Agency of Industrial Science and TechnologyInventors: Masaharu Okazaki, Yoshinari Konishi
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Publication number: 20020006845Abstract: The present invention provides a differential gear that can switch properly from a differential movement state to a limited differential movement state.Type: ApplicationFiled: April 4, 2001Publication date: January 17, 2002Applicant: OS Giken Co.,Ltd.Inventor: Masaharu Okazaki
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Patent number: 5562560Abstract: A speed-reducing apparatus of low mechanical noise is disclosed which includes a wobbling rotation plate. In the speed-reducing apparatus, a fixed plate and a wobbling rotation plate face each other at a rotation angle and a rotation phase difference and are gradually engaged together with an output shaft.Type: GrantFiled: August 3, 1992Date of Patent: October 8, 1996Inventors: Hisanobu Kanamaru, Kouji Harada, Masaharu Okazaki