Patents by Inventor Hirokazu Haraguchi
Hirokazu Haraguchi 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: 10138972Abstract: Each of an assembly for air spring, an air spring, and a carriage for vehicle includes: a first supporting member; a second supporting member arranged to be spaced away from the first supporting member in a main load direction; and an adjusting member connected to the first supporting member and the second supporting member in a plane crossing the main load direction, the adjusting member having anisotropy in elastic property in the plane crossing the main load direction.Type: GrantFiled: October 6, 2014Date of Patent: November 27, 2018Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hirokazu Haraguchi, Jun Yoshida, Kazuo Isomura, Takanori Tojo, Masahiro Sakahira, Jun Shirasaki, Tomohide Maeba, Naoki Hikosaka
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Patent number: 10086850Abstract: Included are: a first supporting member; a second supporting member arranged to be spaced away from the first supporting member in a main load direction; an elastically deformable diaphragm forming a closed space by connecting the first supporting member and the second supporting member; a detection unit detecting a change of a relative distance between the first supporting member and the second supporting member, and producing a mechanical output of the change of the relative distance; and a controlling member capable of discharging air in an inside of the closed space S to an outside of the closed space S in response to the mechanical output from the detection unit. Thereby, an air spring having a mechanism for suppressing an abnormal rise of a vehicle height without deteriorating the diaphragm can be provided.Type: GrantFiled: March 12, 2015Date of Patent: October 2, 2018Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hirokazu Haraguchi, Takehiro Nishimura, Yasufumi Okumura
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Patent number: 9759282Abstract: An air spring includes a top plate, a bottom plate disposed with a distance in a main load direction from the top plate, and a diaphragm made of elastically deformable rubber and connected to the top plate and the bottom plate to form a closed space therebetween. A modulus of elasticity of a material constituting a connection section which is disposed in the top plate and the bottom plate and connected to the diaphragm is greater than a modulus of elasticity of the rubber constituting the diaphragm and smaller than a modulus of elasticity of aluminum.Type: GrantFiled: April 1, 2013Date of Patent: September 12, 2017Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yasuhiko Ura, Hirokazu Haraguchi, Takayuki Sawa, Jun Yoshida
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Publication number: 20170015334Abstract: Included are: a first supporting member; a second supporting member arranged to be spaced away from the first supporting member in a main load direction; an elastically deformable diaphragm forming a closed space by connecting the first supporting member and the second supporting member; a detection unit detecting a change of a relative distance between the first supporting member and the second supporting member, and producing a mechanical output of the change of the relative distance; and a controlling member capable of discharging air in an inside of the closed space S to an outside of the closed space S in response to the mechanical output from the detection unit. Thereby, an air spring having a mechanism for suppressing an abnormal rise of a vehicle height without deteriorating the diaphragm can be provided.Type: ApplicationFiled: March 12, 2015Publication date: January 19, 2017Inventors: Hirokazu HARAGUCHI, Takehiro NISHIMURA, Yasufumi OKUMURA
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Publication number: 20160252153Abstract: Each of an assembly for air spring, an air spring, and a carriage for vehicle includes: a first supporting member; a second supporting member arranged to be spaced away from the first supporting member in a main load direction; and an adjusting member connected to the first supporting member and the second supporting member in a plane crossing the main load direction, the adjusting member having anisotropy in elastic property in the plane crossing the main load direction.Type: ApplicationFiled: October 6, 2014Publication date: September 1, 2016Inventors: Hirokazu HARAGUCHI, Jun YOSHIDA, Kazuo ISOMURA, Takanori TOJO, Masahiro SAKAHIRA, Jun SHIRASAKI, Tomohide MAEBA, Naoki HIKOSAKA
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Patent number: 9340217Abstract: A railcar bogie includes: a bolster located under a carbody of a railcar; an air spring including an air spring main body in which air is stored, the air spring being arranged between the carbody and the bolster; a coil spring arranged between the air spring and the bolster and configured to separate the air spring from the bolster by restoring force thereof in a state where a height of the carbody is maintained at a certain height regardless of the air spring; and a limiting member configured to limit the amount of displacement of the coil spring to limit the amount of separation between the air spring and the bolster.Type: GrantFiled: June 10, 2013Date of Patent: May 17, 2016Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yoshi Sato, Yukitaka Taga, Kazuo Isomura, Makoto Tamaki, Junichi Shirakawa, Koichi Murata, Hirokazu Haraguchi, Takayuki Sawa
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Patent number: 9309944Abstract: An air spring includes an upper surface plate, a lower surface plate, and a diaphragm connecting the upper surface plate and the lower surface plate. The diaphragm has an annular shape having an opening on an inner circumferential side. In the diaphragm, an upper surface plate contact portion, which is a region defining the opening and being in contact with the upper surface plate, includes a deformed portion elastically deformed to protrude toward the lower surface plate side by contact with a support plate. The deformed portion is in contact with a sliding member located on the lower surface plate side when viewed from the deformed portion.Type: GrantFiled: April 1, 2013Date of Patent: April 12, 2016Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yoshiyuki Kita, Hirokazu Haraguchi
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Publication number: 20150219177Abstract: An air spring includes a top plate, a bottom plate disposed with a distance in a main load direction from the top plate, and a diaphragm made of elastically deformable rubber and connected to the top plate and the bottom plate to form a closed space therebetween. A modulus of elasticity of a material constituting a connection section which is disposed in the top plate and the bottom plate and connected to the diaphragm is greater than a modulus of elasticity of the rubber constituting the diaphragm and smaller than a modulus of elasticity of aluminum.Type: ApplicationFiled: April 1, 2013Publication date: August 6, 2015Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yasuhiko Ura, Hirokazu Haraguchi, Takayuki Sawa, Jun Yoshida
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Patent number: 9085105Abstract: A mold for foam molding which can sufficiently prevent burrs from being formed on a molded product, and a foam molding method using the mold are provided. A groove 6 into which a packing seal is to be fitted is formed in a mating surface 3a of a lower mold 3 so as to extend around a cavity 7. The groove 6 has a deep groove portion 6a which is deeply recessed from the mating surface 3a, and a shallow groove portion 6b which is located on the cavity 7 side with respect to the deep groove portion 6a and which continues to the deep groove portion 6a. A portion of the mating surface 3a that extends from its edge on the cavity 7 side down to the groove 6 has a width “a” of from 0.1 mm to 10 mm. A packing seal 5 has a base portion 5a which is inserted into the deep groove portion 6a, and an overhang portion 5b which continues to the base portion 5a and is engaged with the shallow groove portion 6b.Type: GrantFiled: May 21, 2009Date of Patent: July 21, 2015Assignee: BRIDGESTONE CORPORATIONInventors: Hirokazu Haraguchi, Masanori Okumura, Taichi Itabashi, Masakazu Igarashi
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Publication number: 20150175176Abstract: A railcar bogie includes: a bolster located under a carbody of a railcar; an air spring including an air spring main body in which air is stored, the air spring being arranged between the carbody and the bolster; a coil spring arranged between the air spring and the bolster and configured to separate the air spring from the bolster by restoring force thereof in a state where a height of the carbody is maintained at a certain height regardless of the air spring; and a limiting member configured to limit the amount of displacement of the coil spring to limit the amount of separation between the air spring and the bolster.Type: ApplicationFiled: June 10, 2013Publication date: June 25, 2015Inventors: Yoshi Sato, Yukitaka Taga, Kazuo Isomura, Makoto Tamaki, Junichi Shirakawa, Koichi Murata, Hirokazu Haraguchi, Takayuki Sawa
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Publication number: 20140300038Abstract: An air spring includes an upper surface plate, a lower surface plate, and a diaphragm connecting the upper surface plate and the lower surface plate. The diaphragm has an annular shape having an opening on an inner circumferential side. In the diaphragm, an upper surface plate contact portion, which is a region defining the opening and being in contact with the upper surface plate, includes a deformed portion elastically deformed to protrude toward the lower surface plate side by contact with a support plate. The deformed portion is in contact with a sliding member located on the lower surface plate side when viewed from the deformed portion.Type: ApplicationFiled: April 1, 2013Publication date: October 9, 2014Inventors: Yoshiyuki Kita, Hirokazu Haraguchi
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Patent number: 8540220Abstract: The invention offers an air spring for obtaining a vehicle that renders good comfortableness even at the time of the curved-track running. The air spring for a vehicle has an upper board, a lower board, a diaphragm, and a stopper rubber placed between the lower board and a lower plate. The air spring is provided with a mechanism for restraining the displacement of the stopper rubber, the mechanism having a first restraining member placed on either one of the lower plate and the lower board and a second restraining member placed on the other.Type: GrantFiled: June 30, 2010Date of Patent: September 24, 2013Assignee: Sumitomo Electric Industries, Ltd.Inventors: Takayuki Sawa, Hideki Kitada, Toshihisa Adachi, Hirokazu Haraguchi
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Publication number: 20110233832Abstract: The invention offers an air spring for obtaining a vehicle that renders good comfortableness even at the time of the curved-track running. The air spring for a vehicle has an upper board, a lower board, a diaphragm, and a stopper rubber placed between the lower board and a lower plate. The air spring is provided with a mechanism for restraining the displacement of the stopper rubber, the mechanism having a first restraining member placed on either one of the lower plate and the lower board and a second restraining member placed on the other.Type: ApplicationFiled: June 30, 2010Publication date: September 29, 2011Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takayuki Sawa, Hideki Kitada, Toshihisa Adachi, Hirokazu Haraguchi
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Publication number: 20110062613Abstract: A mold for foam molding which can sufficiently prevent burrs from being formed on a molded product, and a foam molding method using the mold are provided. A groove 6 into which a packing seal is to be fitted is formed in a mating surface 3a of a lower mold 3 so as to extend around a cavity 7. The groove 6 has a deep groove portion 6a which is deeply recessed from the mating surface 3a, and a shallow groove portion 6b which is located on the cavity 7 side with respect to the deep groove portion 6a and which continues to the deep groove portion 6a. A portion of the mating surface 3a that extends from its edge on the cavity 7 side down to the groove 6 has a width “a” of from 0.1 mm to 10 mm. A packing seal 5 has a base portion 5a which is inserted into the deep groove portion 6a, and an overhang portion 5b which continues to the base portion 5a and is engaged with the shallow groove portion 6b.Type: ApplicationFiled: May 21, 2009Publication date: March 17, 2011Applicant: BRIDGESTONE CORPORATIONInventors: Hirokazu Haraguchi, Masanori Okumura, Taichi Itabashi, Masakazu Igarashi