Patents by Inventor Masaaki Nishiwaki
Masaaki Nishiwaki 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: 8789666Abstract: A friction couple including a frictionally rubbing member that contains at least one of a binder and a filler, in which the binder and the filler have a modulus of elasticity of 1 GPa or higher and 15 GPa or lower, no softening point or no glass transition point in the range of ?50° C. or higher and 200° C. or lower, and a compressive strength of 50 MPa or higher at 25° C. and 25 MPa or higher at 200° C.; and a frictionally rubbed member. The ratio of the maximum value tan ?(Max) to the minimum value tan ?(Min) of the loss tangent tan ? of the frictionally rubbing member obtained through a dynamic viscoelastic measurement performed at a frequency of 0.1 Hz or higher and 20 Hz or lower and in the range of ?50° C. or higher and 250° C. or lower after thermoforming is 5 or less.Type: GrantFiled: October 9, 2009Date of Patent: July 29, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kenji Abe, Masaaki Nishiwaki, Hiroshi Isono, Yukihiro Shiomi, Hiroyuki Fujikawa, Satoshi Wakamatsu
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Patent number: 8492466Abstract: A friction material including: an amorphous resin that has a chain-like polymer structure; and other components that constitute the friction material and that are components other than the amorphous resin, wherein dispersion treatment is preliminarily carried out in which the amorphous resin is dispersed in at least one of the other components, and a manufacturing method of the friction material.Type: GrantFiled: October 8, 2009Date of Patent: July 23, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kenji Abe, Masaaki Nishiwaki, Hiroshi Isono, Hiroyuki Fujikawa, Satoshi Wakamatsu, Yoshio Shimura, Yuji Nagasawa
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Patent number: 8469161Abstract: A friction couple including: a first friction member that contains a metallic material and includes a first friction surface; and a second friction member that includes a second friction surface that contacts the first friction surface and that contains an oxidation film developer that accelerates formation of an oxidation film on at least one of the first friction surface and the second friction surface by oxidizing the metallic material when the first friction surface and the second friction surface contact each other.Type: GrantFiled: October 9, 2009Date of Patent: June 25, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Advics Co., Ltd.Inventors: Kenji Abe, Masaaki Nishiwaki, Hiroshi Isono, Hiroyuki Fujikawa, Satoshi Wakamatsu, Yoshio Shimura, Yuji Nagasawa
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Patent number: 8247472Abstract: A friction material including: an amorphous resin that has a chain-like polymer structure; and other components that constitute the friction material and that are components other than the amorphous resin, wherein dispersion treatment is preliminarily carried out in which the amorphous resin is dispersed in at least one of the other components, and a manufacturing method of the friction material.Type: GrantFiled: July 29, 2011Date of Patent: August 21, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kenji Abe, Masaaki Nishiwaki, Hiroshi Isono, Hiroyuki Fujikawa, Satoshi Wakamatsu, Yoshio Shimura, Yuji Nagasawa
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Publication number: 20120085605Abstract: A friction couple including a frictionally rubbing member that contains at least one of a binder and a filler, in which the binder and the filler have a modulus of elasticity of 1 GPa or higher and 15 GPa or lower, no softening point or no glass transition point in the range of ?50° C. or higher and 200° C. or lower, and a compressive strength of 50 MPa or higher at 25° C. and 25 MPa or higher at 200° C.; and a frictionally rubbed member. The ratio of the maximum value tan ?(Max) to the minimum value tan ?(Min) of the loss tangent tan ? of the frictionally rubbing member obtained through a dynamic viscoelastic measurement performed at a frequency of 0.1 Hz or higher and 20 Hz or lower and in the range of ?50° C. or higher and 250° C. or lower after thermoforming is 5 or less.Type: ApplicationFiled: October 9, 2009Publication date: April 12, 2012Applicant: Toyota Jidosha Kabushiki KaishaInventors: Kenji Abe, Masaaki Nishiwaki, Hiroshi Isono, Yukihiro Shiomi, Hiroyuki Fujikawa, Satoshi Wakamatsu
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Publication number: 20110281962Abstract: A friction material including: an amorphous resin that has a chain-like polymer structure; and other components that constitute the friction material and that are components other than the amorphous resin, wherein dispersion treatment is preliminarily carried out in which the amorphous resin is dispersed in at least one of the other components, and a manufacturing method of the friction material.Type: ApplicationFiled: July 29, 2011Publication date: November 17, 2011Applicant: Toyota Jidosha Kabushiki KaishaInventors: Kenji Abe, Masaaki Nishiwaki, Hiroshi Isono, Hiroyuki Fujikawa, Satoshi Wakamatsu, Yoshio Shimura, Yuji Nagasawa
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Publication number: 20100174010Abstract: A friction material including: an amorphous resin that has a chain-like polymer structure; and other components that constitute the friction material and that are components other than the amorphous resin, wherein dispersion treatment is preliminarily carried out in which the amorphous resin is dispersed in at least one of the other components, and a manufacturing method of the friction material.Type: ApplicationFiled: October 8, 2009Publication date: July 8, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventors: Kenji ABE, Masaaki NISHIWAKI, Hiroshi ISONO, Hiroyuki FUJIKAWA, Satoshi WAKAMATSU, Yoshio SHIMURA, Yuji NAGASAWA
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Publication number: 20100163353Abstract: A friction couple including: a first friction member that contains a metallic material and includes a first friction surface; and a second friction member that includes a second friction surface that contacts the first friction surface and that contains an oxidation film developer that accelerates formation of an oxidation film on at least one of the first friction surface and the second friction surface by oxidizing the metallic material when the first friction surface and the second friction surface contact each other.Type: ApplicationFiled: October 9, 2009Publication date: July 1, 2010Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, ADVICS CO., LTD.Inventors: Kenji ABE, Masaaki Nishiwaki, Hiroshi Isono, Hiroyuki Fujikawa, Satoshi Wakamatsu, Yoshio Shimura, Yuji Nagasawa
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Publication number: 20060283672Abstract: A friction device includes at least one pair of sliding surfaces which are brought into contact with each other. The friction device comprises a friction material containing silicon carbide, and a mate material in which a cermet layer containing tungsten carbide is formed in a sliding surface of the mate material.Type: ApplicationFiled: November 16, 2005Publication date: December 21, 2006Applicants: Toyota Jidosha Kabushiki Kaisha, Advics Co., Ltd.Inventors: Satoru Tsurubuchi, Hitoshi Ikeuchi, Masaaki Nishiwaki, Shigeru Ichikawa, Hiroyuki Fujikawa, Satoshi Wakamatsu, Tatsuhisa Kubota, Yuji Nagasawa, Kazunori Yoshida, Yoshio Shimura, Shigeru Hotta
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Patent number: 6644892Abstract: A cable holder is deposited and fixed on an inner wall of a sewage pipe made of resin and supports an optical fiber for communication, which is passed through the pipe. The cable holder has a longitudinal section similar to that of an inverted pot and a narrowed inlet opening, and is provided with a pair of claws arranged in the axial direction of a pipe at its upper part. A cable holder driving device is raised in a state where the cable holder is heated and a pair of claws are pressure-fitted into the inner wall of the pipe. The pressure-fitting is carried out to such a degree that the cable fitted to and supported by the cable holder is brought into contact with the inner wall of the pipe. After the cable holder is cooled down and fixed, the cable passed through the pipe is pushed in the cable holder through its inlet opening.Type: GrantFiled: June 8, 2001Date of Patent: November 11, 2003Assignees: NihonHume Corporation, Consec CorporationInventors: Masaaki Nishiwaki, Akira Kobayashi
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Publication number: 20020187008Abstract: The cable holder is deposited and fixed on the ceiling part of a sewage pipe made of resin and supports an optical fiber for communication, which is passed through the pipe. The cable holder has a longitudinal section similar to that of an inverted pot and a narrowed inlet opening, and is provided with a pair of claws arranged toward the axial direction of a pipe at its upper part. A cable holder driving device is raised in a state where the cable holder is heated, wherein a pair of claws are pressure-fitted into the ceiling part of the pipe. The pressure-fitting is carried out to such a degree that the cable fitted to and supported by the cable holder is brought into contact with the inner wall of the pipe. After the cable holder is cooled down and fixed, the cable passed through the pipe is pushed in the cable holder through the inlet opening.Type: ApplicationFiled: June 8, 2001Publication date: December 12, 2002Inventors: Masaaki Nishiwaki, Akira Kobayashi
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Patent number: 5229955Abstract: A detecting apparatus for detecting a frictional coefficient of the road surface on which an automotive vehicle travels. In the detection apparatus, a plurality of condition amounts related to at least one of the vehicle in braking operation, turning operation and a weather condition during travel of the vehicle are detected. Fuzzy inference is carried out on the detected conditional amounts to determine the compatibility of road surface frictional coefficients corresponding with the detected condition amounts. The fuzzy inference outputs are used to calculate a road surface frictional coefficient.Type: GrantFiled: March 8, 1991Date of Patent: July 20, 1993Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masaaki Nishiwaki, Hiroshi Harada, Hisanori Kaneko