Patents by Inventor Chikara Tanaka
Chikara Tanaka 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: 20120246857Abstract: Provided is a core/sheath composite filament for toothbrushes which exhibits excellent hardness, durability and feeling of use when used in toothbrushes, is less prone to falling out when tufted into the tufting plate, and makes it possible to improve stain-removal properties. Also provided is a toothbrush using said core/sheath composite filament. A toothbrush is configured using bundles of bristles configured from core/sheath composite filaments that have a quadrangular cross section in the plane perpendicular to the lengthwise direction and comprise a core (2), which is formed from a synthetic resin fiber, and a sheath (3), which integrally covers the core (2) and is formed from an elastomer that is compatible with the synthetic resin constituting the core (2). Tufts configured from a plurality of the core/sheath composite filaments (1) are tufted in the center portion of a tufting plate.Type: ApplicationFiled: November 10, 2010Publication date: October 4, 2012Inventors: Keisuke Kato, Nobuhisa Hyodo, Chikara Tanaka
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Publication number: 20120119546Abstract: In a frame structure for a vehicle having a reinforcement body provided inside a frame body, the frame body comprises a first face portion and a second face portion extending in a direction substantially perpendicular to a rotational-axis direction of a bending moment occurring when a torsional load acts on a vehicle body, and third face portions positioned between the first and second face portions, and the reinforcement body comprises third-face connection portions connected to the third face portions, a first-face connection portion connected to the first face portion at a corner portion, a first-face non-contact portion provided away from the first face portion, a second-face connection portion connected to the second face portion at a corner portion, and a second-face non-contact portion provided away from the second face portion.Type: ApplicationFiled: October 25, 2011Publication date: May 17, 2012Applicant: MAZDA MOTOR CORPORATIONInventors: Masanori HONDA, Chikara KAWAMURA, Shin SASAKI, Chikara TANAKA, Yushi MATSUDA, Yukinori NAKAJIMA
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Patent number: 7985317Abstract: There are provided an adhesive-agent disposing step of disposing the adhesive agent, a first curing step of curing part of the adhesive agent disposed (including an adhesive-agent-disposition providing step of the present invention), a painting step of coating a paint on the works, and a heating step (a second curing step) of applying a heating treatment with a drying device. There can be provided a joining method of works that can ensure a high joining quality and productivity.Type: GrantFiled: June 16, 2008Date of Patent: July 26, 2011Assignee: Mazda Motor CorporationInventors: Katsuya Himuro, Chikara Tanaka, Masatoshi Shinomori
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Publication number: 20110006560Abstract: A frame body comprises a first face portion on which a compressive force acts in case a load is applied, a second face portion on which a tensional force acts, and third and fourth face portions which connect the first and second face portions. The third and fourth face portions are respectively equipped with a reinforcing member which comprises a base portion which is away from the frame body and plural base portions which project from the base portion and are joined to the frame body. The convex portions have plural convexities which are arranged so as to extend both in the longitudinal and sectional directions of a frame.Type: ApplicationFiled: June 29, 2010Publication date: January 13, 2011Applicant: MAZDA MOTOR CORPORATIONInventors: Masanori HONDA, Takashi YOSHIMURA, Shin SASAKI, Chikara TANAKA, Kenichi YAMAMOTO
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Patent number: 7839663Abstract: A converter includes a converter circuit 1 having a plurality of bridge-connected semiconductor switching devices for converting AC power into DC power, a smoothing condenser connected in parallel to the DC side of the converter circuit and a current detector provided in a condenser circuit to control a condenser current flowing through the smoothing condenser to be a set value. The condenser current is controlled to be the set value (e.g. zero) to thereby reduce the capacity of the smoothing condenser and make the converter small.Type: GrantFiled: December 16, 2008Date of Patent: November 23, 2010Assignee: Hitachi Appliances, Inc.Inventors: Takahiro Suzuki, Yoshitaka Iwaji, Tsunehiro Endo, Yasuo Notohara, Yoshiaki Kurita, Tatsuo Ando, Chikara Tanaka
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Publication number: 20100206856Abstract: A laser welding method including a step of welding upper and lower metal plates, a step of picking up an image of a molten pool near a molten hole from the side of the upper metal plate during an execution of the welding step, a step of determining whether a welding state of the metal plates is proper or not by analyzing a generation state of the molten pool based on the image picked up in the picking-up step, and a step of adjusting at least one of a parameter of the irradiated laser beams and a feeding speed of the filler wire so that the welding state of the metal plates becomes proper in case the welding state determined in the determining step is not proper.Type: ApplicationFiled: January 29, 2010Publication date: August 19, 2010Applicant: MAZDA MOTOR CORPORATIONInventors: Chikara TANAKA, Yoichiro KITAHARA
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Publication number: 20100140978Abstract: In a vehicle body structure in which a vehicle-body frame of front side frames with a flangeless structure having a rectangular closed cross section and a vehicle-body panel of a dash panel are welded, a concave portion is formed at a specified portion of the vehicle-body panel to which the vehicle-body frame is welded so as to be concaved toward one side which is opposite to a disposition side of the vehicle-body frame and extends in its longitudinal direction, a temporary connection portion which temporarily connects the vehicle-body frame to a side of the concave portion is formed, and a lazar welding portion which connects the vehicle-body frame to the vehicle-body panel is formed near the temporary connection portion so as to extend along the longitudinal direction of the vehicle-body frame.Type: ApplicationFiled: December 7, 2009Publication date: June 10, 2010Applicant: MAZDA MOTOR CORPORATIONInventors: Akinori UTSUNOMIYA, Chikara TANAKA, Yoichiro KITAHARA, Masanori HONDA, Shin SASAKI, Takayuki HASHIDA
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Publication number: 20090236039Abstract: A heat energy as a second trigger energy is applied to an overlap portions in such a manner that a terminal portion of a first chain-reacting cure area which is presumed to be generated by applying the heat energy as a first trigger energy to an vehicle-body assembly member overlaps a start portion of a second chain-reacting cure area which is to be generated by applying the heat energy as the second trigger energy to the adhesive agent between the vehicle-body assembly member and the vehicle-body member. Accordingly, the adhesive agent can be made cure surely.Type: ApplicationFiled: January 8, 2009Publication date: September 24, 2009Applicant: MAZDA MOTOR CORPORATIONInventors: Chikara TANAKA, Katsuya HIMURO
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Publication number: 20090135630Abstract: A converter includes a converter circuit 1 having a plurality of bridge-connected semiconductor switching devices for converting AC power into DC power, a smoothing condenser connected in parallel to the DC side of the converter circuit and a current detector provided in a condenser circuit to control a condenser current flowing through the smoothing condenser to be a set value. The condenser current is controlled to be the set value (e.g. zero) to thereby reduce the capacity of the smoothing condenser and make the converter small.Type: ApplicationFiled: December 16, 2008Publication date: May 28, 2009Inventors: Takahiro Suzuki, Yoshitaka Iwaji, Tsunehiro Endo, Yasuo Notohara, Yoshiaki Kurita, Tatsuo Ando, Chikara Tanaka
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Patent number: 7471525Abstract: A converter includes a converter circuit 1 having a plurality of bridge-connected semiconductor switching devices for converting AC power into DC power, a smoothing condenser connected in parallel to the DC side of the converter circuit and a current detector provided in a condenser circuit to control a condenser current flowing through the smoothing condenser to be a set value. The condenser current is controlled to be the set value (e.g. zero) to thereby reduce the capacity of the smoothing condenser and make the converter small.Type: GrantFiled: August 30, 2005Date of Patent: December 30, 2008Assignee: Hitachi Appliances, Inc.Inventors: Takahiro Suzuki, Yoshitaka Iwaji, Tsunehiro Endo, Yasuo Notohara, Yoshiaki Kurita, Tatsuo Ando, Chikara Tanaka
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Publication number: 20080314515Abstract: There are provided an adhesive-agent disposing step of disposing the adhesive agent, a first curing step of curing part of the adhesive agent disposed (including an adhesive-agent-disposition providing step of the present invention), a painting step of coating a paint on the works, and a heating step (a second curing step) of applying a heating treatment with a drying device. There can be provided a joining method of works that can ensure a high joining quality and productivity.Type: ApplicationFiled: June 16, 2008Publication date: December 25, 2008Applicant: MAZDA MOTOR CORPORATIONInventors: Katsuya HIMURO, Chikara TANAKA, Masatoshi SHINOMORI
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Publication number: 20080237203Abstract: A gap is provided at joining faces of a pair of metal works with an uneven shape when the metal works contact one another for joining. An adhesive agent having a chain-reacting curing reaction function is disposed within the gap. The adhesive agent is cured by an autogenously-generated curing reaction heat caused by an outer energy and an additional heat that is successively generated by the autogenously-generated curing reaction heat within the adhesive agent. A welding portion, where the works contact one another substantially directly, is welded by a laser beam, and the above-described energy for causing the autogenously-generated curing reaction heat for the adhesive agent is provided by the laser beam. Accordingly, a joining structure and method of metal works that can has less limitation in a joining location is provided.Type: ApplicationFiled: January 28, 2008Publication date: October 2, 2008Applicant: MAZDA MOTOR CORPORATIONInventors: Chikara TANAKA, Katsuya HIMURO, Yoichiro KITAHARA
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Publication number: 20070292704Abstract: There is provided a thermoplastic elastomer composition, comprising per 100 parts by weight of ethylene-propylene-diene monomer (EPDM), 20 to 30 parts by weight of polypropylene (PP), 7 to 30 parts by weight of ethylene octene rubber (EOR), 7 to 23 parts by weight of propylene butene rubber (PBR), and 55 to 65 parts by weight of mineral oil, wherein a content of said poly(1-butene) (PB) is small parts by weight. Thereby, there can be provided a thermoplastic elastomer composition and a molded member obtained by molding the same, which can be superior in the shape recovery property at the deformation, without deteriorating the tactile quality, gloss-change resistance, or formability of particles.Type: ApplicationFiled: June 7, 2007Publication date: December 20, 2007Inventors: Masaaki Onishi, Yukinori Nakajima, Chikara Tanaka
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Patent number: 7148291Abstract: The thermoplastic elastomer composition of this invention includes 2 through 14 mass % of PP; 19 through 35 mass % of PB-1; and 30 through 52 mass % of olefin-based rubber, and a weight ratio of PB-1/(PP+PB-1) is 56 through 90% and a weight ratio of PB-1/(PP+(PB-1)+olefin-based rubber) is 25 through 47%.Type: GrantFiled: January 20, 2004Date of Patent: December 12, 2006Assignee: Mazda Motor CorporationInventors: Chikara Tanaka, Masaaki Onishi
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Publication number: 20060167182Abstract: A thermoplastic elastomer composition for an operating member, comprising high-crystalline polypropylene having crystallinity of 95% or more, low-crystalline polypropylene having crystallinity of less than 95%, poly(1-butene), partial-cross-linked olefin family rubber having SP value of 7.5 or more and 8.5 or less, and non-cross-linked olefin family rubber having SP value of 7.5 or more and 8.5 or less. Accordingly, there can be provided the thermoplastic elastomer composition for an operating member and the molded member obtained by molding the same, which can provide the better tactic quality and improve the wear resistance and scratch resistance.Type: ApplicationFiled: January 4, 2006Publication date: July 27, 2006Applicant: MAZDA MOTOR CORPORATIONInventors: Masaaki Onishi, Chikara Tanaka, Kunihiko Yoshida
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Patent number: 7045202Abstract: A long glass fiber filler reinforced resin material for molding includes a masterbatch formed of a composite of a matrix resin with a polypropylene (PP) component and a long glass fiber filler and a diluent resin made from an ethylene-propylene block copolymer. The above-described matrix resin of the masterbatch includes the PP component having a pentad isotactic index of at least 95%, and a melt flow rate (MFR) of the matrix resin of the masterbatch is 100 to 500 g/10 min and larger than six times a melt flow rate of the diluent resin. The long glass fiber filler is in a content of 30 to 50 mass percent with respect to a total mass thereof.Type: GrantFiled: January 28, 2003Date of Patent: May 16, 2006Assignee: Mazda Motor CorporationInventors: Chikara Tanaka, Takahiro Tochioka
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Publication number: 20060044848Abstract: A converter includes a converter circuit 1 having a plurality of bridge-connected semiconductor switching devices for converting AC power into DC power, a smoothing condenser connected in parallel to the DC side of the converter circuit and a current detector provided in a condenser circuit to control a condenser current flowing through the smoothing condenser to be a set value. The condenser current is controlled to be the set value (e.g. zero) to thereby reduce the capacity of the smoothing condenser and make the converter small.Type: ApplicationFiled: August 30, 2005Publication date: March 2, 2006Inventors: Takahiro Suzuki, Yoshitaka Iwaji, Tsunehiro Endo, Yasuo Notohara, Yoshiaki Kurita, Tatsuo Ando, Chikara Tanaka
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Publication number: 20040157998Abstract: The thermoplastic elastomer composition of this invention includes 2 through 14 mass % of PP; 19 through 35 mass % of PB-1; and 30 through 52 mass % of olefin-based rubber, and a weight ratio of PB-1/(PP+PB-1) is 56 through 90% and a weight ratio of PB-1/(PP+(PB-1)+olefin-based rubber) is 25 through 47%.Type: ApplicationFiled: January 20, 2004Publication date: August 12, 2004Applicant: Mazda Motor CorporationInventors: Chikara Tanaka, Masaaki Onishi
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Publication number: 20030148083Abstract: A long glass fiber filler reinforced resin material for molding comprises a masterbatch formed of a composite of a matrix resin including a PP component and a long glass fiber filler and a diluent resin made from an ethylene-propylene block copolymer. The above-described matrix resin of the masterbatch includes the PP component having a pentad isotactic index of at least 95%, and a MFR of the matrix resin of the masterbatch is 100 to 500 g/10 min and larger than six times a melt flow rate of the diluent resin. The long glass fiber filler is in a content of 30 to 50 mass percent with respect to a total mass thereof.Type: ApplicationFiled: January 28, 2003Publication date: August 7, 2003Applicant: Mazda Motor CorporationInventors: Chikara Tanaka, Takahiro Tochioka
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Patent number: 6470841Abstract: The present invention provides a valve operating system for internal combustion engines, having a roller rolling contacting a valve operating cam, the system being provided with an oil supply passage capable of reducing a pressure loss to a low level even when a flow rate of lubricating oil entering the oil supply passage increases in accordance with a heightened engine speed, improving the lubricating ability with respect to the roller, and attaining a long lifetime of a rocker arm.Type: GrantFiled: September 27, 2001Date of Patent: October 29, 2002Assignees: Tanaka Seimitsu Kogyo Co., Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Atsushi Takahashi, Takaaki Harasaki, Masayasu Tajima, Chikara Tanaka, Takeya Harada, Noriyuki Yamada