Patents by Inventor Toru Matsushima
Toru Matsushima 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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Publication number: 20230192061Abstract: A brake device applies a braking force to a vehicle by pressing a friction material against a rotor rotating integrally with a wheel. A temperature estimation method applied to the brake device includes: calculating an amount of absorbed energy absorbed by the rotor based on an amount of kinetic energy that the vehicle loses and an amount of potential energy that the vehicle loses during braking of the vehicle; and estimating a temperature of the rotor based on the amount of absorbed energy.Type: ApplicationFiled: October 17, 2022Publication date: June 22, 2023Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshiyuki FURUTA, Toru MATSUSHIMA, Yoshihiro OSAWA
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Publication number: 20200182321Abstract: A friction material for dry brakes containing, as raw friction materials, a fiber substrate, a binder, an organic filler, and an inorganic filler, wherein porous silica including a plurality of pores with a central pore diameter of 1.0 nm or greater and 50.0 nm or smaller that absorbs liquid matter generated by thermal decomposition of an organic matter in the friction material at the time of brake braking is contained as the inorganic filler.Type: ApplicationFiled: July 23, 2018Publication date: June 11, 2020Applicant: ADVICS CO., LTD.Inventors: Junichi UJITA, Manami SUGIRA, Katsuya OKYAMA, Takatoshi TAKEMOTO, Kenji ABE, Toru MATSUSHIMA, Mamoru TOYAMA, Yuji NAGASAWA, Nnvoru SUGIURA
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Patent number: 9803709Abstract: A disc brake device (1) includes: a disc rotor (2) rotatable around its rotation axis; a pair of brake pads (3, 4) provided opposite to each other on both sides of the disc rotor in an axial direction along the rotation axis; and a pressing mechanism (6) able to press the brake pads against the disc rotor from both sides of the disc rotor with pistons (9) provided opposite to each other on both sides of the disc rotor in the axial direction. Each brake pad has a friction material (7) facing a corresponding friction face (2a) of the disc rotor. The number of slits (10) provided in the friction material of one of the brake pads and not passing through any pressing portions pressed by the pistons is different from the number of slits provided in the friction material of the other one of the pair of brake pads and not passing through any pressing portions.Type: GrantFiled: June 20, 2014Date of Patent: October 31, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryutaro Misumi, Toru Matsushima, Dominic Cote Vaillancourt, Yoshitomo Deno, Ikuru Konno
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Publication number: 20160131208Abstract: A disc brake device (1) includes: a disc rotor (2) rotatable around its rotation axis; a pair of brake pads (3, 4) provided opposite to each other on both sides of the disc rotor in an axial direction along the rotation axis; and a pressing mechanism (6) able to press the brake pads against the disc rotor from both sides of the disc rotor with pistons (9) provided opposite to each other on both sides of the disc rotor in the axial direction. Each brake pad has a friction material (7) facing a corresponding friction face (2a) of the disc rotor. The number of slits (10) provided in the friction material of one of the brake pads and not passing through any pressing portions pressed by the pistons is different from the number of slits provided in the friction material of the other one of the pair of brake pads and not passing through any pressing portions.Type: ApplicationFiled: June 20, 2014Publication date: May 12, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ryutaro MISUMI, Toru MATSUSHIMA, Dominic COTE VAILLANCOURT, Yoshitomo DENO, Ikuru KONNO
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Patent number: 8235184Abstract: A disc brake apparatus that can keep a stable contact state between a torque transmitting part of a brake pad and a torque receiving part of a mounting, so as to reliably suppress a brake noise phenomenon. At the time of forward braking where a main body member of a brake pad is pressed against a disc rotor, the rotational moment acting on the main body member of the brake pad from the disc rotor is absorbed by the main body member rotating relative to a forward braking torque transmitting member about one pin joint, so as to be restrained from being transmitted to the forward braking torque transmitting member. As a result, the respective contact states between two torque transmitting protrusions formed in the forward braking torque transmitting member of the brake pad and torque receiving surfaces formed in a forward braking torque receiving part of a mounting are held stable.Type: GrantFiled: December 19, 2007Date of Patent: August 7, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventor: Toru Matsushima
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Publication number: 20090283372Abstract: A disc brake apparatus that can keep a stable contact state between a torque transmitting part of a brake pad and a torque receiving part of a mounting, so as to reliably suppress a brake noise phenomenon. At the time of forward braking where a main body member of a brake pad is pressed against a disc rotor, the rotational moment acting on the main body member of the brake pad from the disc rotor is absorbed by the main body member rotating relative to a forward braking torque transmitting member about one pin joint, so as to be restrained from being transmitted to the forward braking torque transmitting member. As a result, the respective contact states between two torque transmitting protrusions formed in the forward braking torque transmitting member of the brake pad and torque receiving surfaces formed in a forward braking torque receiving part of a mounting are held stable.Type: ApplicationFiled: December 19, 2007Publication date: November 19, 2009Applicant: Toyota Jidosha Kabushiki KaishaInventor: Toru Matsushima
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Patent number: 7315798Abstract: A natural frequency and a calculated mode vector are calculated by using a finite-element method models for analysis which include an object of analysis including a plurality of components and a plurality of elements which are positioned between the components of the object of analysis and indicate a boundary condition between the components, the calculated mode vector having high degree of correlation for an experimental mode vector is extracted and set to a pair, and identifying the boundary condition of the elements based on the extracted calculated mode vector and the natural frequency corresponding to the extracted calculated mode vector.Type: GrantFiled: July 31, 2003Date of Patent: January 1, 2008Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Yoshitsugu Goto, Tatsuyuki Amago, Yoshio Kojima, Mizuho Inagaki, Kazuaki Chiku, Toru Matsushima, Keisuke Hayakawa
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Publication number: 20040093195Abstract: A natural frequency and a calculated mode vector are calculated by using a finite-element method models for analysis which include an object of analysis including a plurality of components and a plurality of elements which are positioned between the components of the object of analysis and indicate a boundary condition between the components, the calculated mode vector having high degree of correlation for an experimental mode vector is extracted and set to a pair, and identifying the boundary condition of the elements based on the extracted calculated mode vector and the natural frequency corresponding to the extracted calculated mode vector.Type: ApplicationFiled: July 31, 2003Publication date: May 13, 2004Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Yoshitsugu Goto, Tatsuyuki Amago, Yoshio Kojima, Mizuho Inagaki, Kazuaki Chiku, Toru Matsushima, Keisuke Hayakawa