Patents by Inventor Tsutomu Furuyama
Tsutomu Furuyama 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: 20080178968Abstract: A sheet of a 6000 type aluminum alloy containing Si and Mg as main alloy components and having an excellent formability sufficient to allow flat hemming, excellent resistance to denting, and good hardenability during baking a coating, which exhibits an anisotropy of Lankford values of more than 0.4 or the strength ratio for cube orientations of the texture thereof of 20 or more, and exhibits a minimum bend radius of 0.5 mm or less at 180° bending, even when the offset yield strength thereof exceeds 140 MPa through natural aging; and a method for producing the sheet of the aluminum alloy, which includes the steps of subjecting an ingot to a homogenization treatment, cooling to a temperature lower than 350° C. at a cooling rate of 100° C./hr or more, optionally to room temperature, heating again to a temperature of 300 to 500° C. and subjecting it to hot rolling, cold rolling the hot rolled product, and subjecting the cold rolled sheet to a solution treatment at a temperature of 400° C.Type: ApplicationFiled: March 21, 2008Publication date: July 31, 2008Inventors: Hidetoshi Uchida, Tadashi Minoda, Mineo Asano, Yoshikazu Ozeki, Tsutomu Furuyama
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Publication number: 20080178973Abstract: A sheet of a 6000 type aluminum alloy containing Si and Mg as main alloy components and having an excellent formability sufficient to allow flat hemming, excellent resistance to denting, and good hardenability during baking a coating, which exhibits an anisotropy of Lankford values of more than 0.4 or the strength ratio for cube orientations of the texture thereof of 20 or more, and exhibits a minimum bend radius of 0.5 mm or less at 180° bending, even when the offset yield strength thereof exceeds 140 MPa through natural aging; and a method for producing the sheet of the aluminum alloy, which includes the steps of subjecting an ingot to a homogenization treatment, cooling to a temperature lower than 350° C. at a cooling rate of 100° C./hr or more, optionally to room temperature, heating again to a temperature of 300 to 500° C. and subjecting it to hot rolling, cold rolling the hot rolled product, and subjecting the cold rolled sheet to a solution treatment at a temperature of 400° C.Type: ApplicationFiled: March 21, 2008Publication date: July 31, 2008Inventors: Hidetoshi Uchida, Tadashi Minoda, Mineo Asano, Yoshikazu Ozeki, Tsutomu Furuyama
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Publication number: 20080178967Abstract: A sheet of a 6000 type aluminum alloy containing Si and Mg as main alloy components and having an excellent formability sufficient to allow flat hemming, excellent resistance to denting, and good hardenability during baking a coating, which exhibits an anisotropy of Lankford values of more than 0.4 or the strength ratio for cube orientations of the texture thereof of 20 or more, and exhibits a minimum bend radius of 0.5 mm or less at 180° bending, even when the offset yield strength thereof exceeds 140 MPa through natural aging; and a method for producing the sheet of the aluminum alloy, which includes the steps of subjecting an ingot to a homogenization treatment, cooling to a temperature lower than 350° C. at a cooling rate of 100° C./hr or more, optionally to room temperature, heating again to a temperature of 300 to 500° C. and subjecting it to hot rolling, cold rolling the hot rolled product, and subjecting the cold rolled sheet to a solution treatment at a temperature of 400° C.Type: ApplicationFiled: March 21, 2008Publication date: July 31, 2008Inventors: Hidetoshi Uchida, Tadashi Minoda, Mineo Asano, Yoshikazu Ozeki, Tsutomu Furuyama
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Patent number: 7188851Abstract: A stabilizer for vehicles has a torsion portion extending in a width direction of a vehicle, arm portions extending in a forward or backward direction from both side end portions of the torsion portion, straight portions provided in a vicinity of both side end portions of the torsion portion, the straight portions extending along with an axial direction thereof, leading end portions of the arm portions, the leading end portions of the arm portions being mounted to the vehicle, and the straight portions being mounted to the vehicle via bushes, and a stopper provided at one of the straight portions, the stopper preventing the straight portions from moving more than a predetermined distance in an axial direction with respect to the bush.Type: GrantFiled: August 6, 2003Date of Patent: March 13, 2007Assignee: NHK Spring Co., Ltd.Inventors: Tsutomu Furuyama, Jun Umeno, Kenzo Tago
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Patent number: 6871865Abstract: A hollow stabilizer made of a steel pipe, comprises: a torsion portion extending in a width direction of a vehicle body; a pair of right and left arm portions positioned at both end sides of the torsion portion; and a plurality of curved portions which are bent in an arc shape in any of the torsion portion, the arm portions and portions therebetween. Bending radii of the plurality of curved portions are different from each other.Type: GrantFiled: October 22, 2002Date of Patent: March 29, 2005Assignee: NHK Spring Co., Ltd.Inventors: Tsutomu Furuyama, Hiroshi Koyama, Yoshihiro Koshita, Jun Umeno, Koichi Tamatsu
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Publication number: 20050029769Abstract: A stabilizer for vehicles has a torsion portion extending in a width direction of a vehicle, arm portions extending in a forward or backward direction from both side end portions of the torsion portion, straight portions provided in a vicinity of both side end portions of the torsion portion, the straight portions extending along with an axial direction thereof, leading end portions of the arm portions, the leading end portions of the arm portions being mounted to the vehicle, and the straight portions being mounted to the vehicle via bushes, and a stopper provided at one of the straight portions, the stopper preventing the straight portions from moving more than a predetermined distance in an axial direction with respect to the bush.Type: ApplicationFiled: August 6, 2003Publication date: February 10, 2005Inventors: Tsutomu Furuyama, Jun Umeno, Kenzo Tago
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Publication number: 20040094249Abstract: A sheet of a 6000 type aluminum alloy containing Si and Mg as main alloy components and having excellent formability sufficient to allow flat hemming, excellent resistance to denting, and good hardenability during baking a coating, which exhibits an anisotropy of Lankford values of more than 0.4 or the strength ratio for cube orientations of the texture thereof of 20 or more, and exhibits a minimum bend radius of 0.5 mm or less at 180° bending even when the offset yield strength thereof exceeds 140 MPa through natural aging; and a method for producing the sheet of the aluminum alloy, which comprises subjecting an ingot to a homogenization treatment, cooling to a temperature lower than 350° C. at a cooling rate of 100° C./hr or more, optionally to room temperature, heating again to a temperature of 300 to 500° C. and subjecting it to hot rolling, cold rolling the hot rolled product, and subjecting the cold rolled sheet to a solution treatment at a temperature of 400° C.Type: ApplicationFiled: August 22, 2003Publication date: May 20, 2004Inventors: Hidetoshi Uchida, Tadashi Minoda, Mineo Asano, Yoshikazu Ozeki, Tsutomu Furuyama
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Patent number: 6711927Abstract: A bending apparatus for a long material comprises: supporting device for supporting a long material in cantilever fashion at least in a bending direction; bending device which nips the material at an input point apart from the supporting device and is rotated by a predetermined angle so as to bend the material between the supporting device and the input point; driving device for rotating the bending device; feeding device for moving the material toward the bending device and setting a position of the material; and moving device which sets up a separation distance between the supporting device and the bending device prior to bending of the material and allows the supporting device and the bending device to move relatively during the bending of the material.Type: GrantFiled: December 21, 2001Date of Patent: March 30, 2004Assignees: NHK Springs Co., Ltd., Morita & CompanyInventors: Tsutomu Furuyama, Yoshihiro Koshita, Mitsushige Kawakubo, Osamu Shinkai
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Patent number: 6564606Abstract: A manufacturing method for manufacturing a bellows having pleat walls with S-shaped profiles comprises a primary forming process for forming a formed bellows, a pressing process for compressing the formed bellows in the axial direction, and a stretching process for pulling the compressed bellows in the axial direction, thereby obtaining desired pitches and free length. After the stretching process is carried out, the bellows is subjected to an annealing and ageing heat-treatment process. An apparatus for manufacturing the bellows comprises a pair of molds that have their respective forming surfaces in shapes corresponding individually to the pleat walls. The die is slightly retreated away from the pleat walls just before the dies open in the diametrical direction after the pleat walls are formed.Type: GrantFiled: June 8, 2001Date of Patent: May 20, 2003Assignee: NHK Spring Co., Ltd.Inventors: Hideki Okada, Tsutomu Furuyama
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Publication number: 20030075895Abstract: A hollow stabilizer made of a steel pipe, comprises: a torsion portion extending in a width direction of a vehicle body; a pair of right and left arm portions positioned at both end sides of the torsion portion; and a plurality of curved portions which are bent in an arc shape in any of the torsion portion, the arm portions and portions therebetween. Bending radii of the plurality of curved portions are different from each other.Type: ApplicationFiled: October 22, 2002Publication date: April 24, 2003Inventors: Tsutomu Furuyama, Hiroshi Koyama, Yoshihiro Koshita, Jun Umeno, Koichi Tamatsu
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Patent number: 6464805Abstract: An Al—Mg—Si—Cu aluminum alloy plate excelling in strength and formability and exhibiting improved filiform corrosion resistance which is suitably used for automotive body panels. The aluminum alloy plate contains 0.25-0.6% of Mg (mass %, hereinafter the same), 0.9-1.1% of Si, 0.6-1.0% of Cu, and at least one of 0.20% or less of Mn and 0.10% or less of Cr, with the balance consisting of Al and impurities, wherein the number of Q phases (Cu—Mg—Si—Al phases) with a size of 2 &mgr;m or more in diameter present in a matrix is 150 per mm2 or more. The aluminum alloy plate is fabricated by homogenizing an ingot of an aluminum alloy having the above composition at 530° C. or more, cooling the ingot to 450° C. or less at a cooling rate of 30° C./hour or less, hot-rolling the ingot, cold-rolling the hot-rolled product, and providing the cold-rolled product with a solution heat treatment.Type: GrantFiled: March 26, 2001Date of Patent: October 15, 2002Assignees: Nissan Motor Co., Ltd., Sumitomo Light Metal Industries, Ltd.Inventors: Shinji Matsuda, Tsutomu Hattori, Masahito Katsukura, Tadashi Minoda, Hideo Yoshida, Shinichi Matsuda, Mineo Asano, Tsutomu Furuyama
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Publication number: 20020088265Abstract: A bending apparatus for a long material comprises: supporting device for supporting a long material in cantilever fashion at least in a bending direction; bending device which nips the material at an input point apart from the supporting device and is rotated by a predetermined angle so as to bend the material between the supporting device and the input point; driving device for rotating the bending device; feeding device for moving the material toward the bending device and setting a position of the material; and moving device which sets up a separation distance between the supporting device and the bending device prior to bending of the material and allows the supporting device and the bending device to move relatively during the bending of the material.Type: ApplicationFiled: December 21, 2001Publication date: July 11, 2002Inventors: Tsutomu Furuyama, Yoshihiro Koshita, Mitsushige Kawakubo, Osamu Shinkai
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Publication number: 20020005232Abstract: An Al—Mg—Si—Cu aluminum alloy plate excelling in strength and formability and exhibiting improved filiform corrosion resistance which is suitably used for automotive body panels. The aluminum alloy plate contains 0.25-0.6% of Mg (mass %, hereinafter the same), 0.9-1.1% of Si, 0.6-1.0% of Cu, and at least one of 0.20% or less of Mn and 0.10% or less of Cr, with the balance consisting of Al and impurities, wherein the number of Q phases (Cu—Mg—Si—Al phases) with a size of 2 &mgr;m or more in diameter present in a matrix is 150 per mm2 or more. The aluminum alloy plate is fabricated by homogenizing an ingot of an aluminum alloy having the above composition at 530° C. or more, cooling the ingot to 450° C. or less at a cooling rate of 30° C./hour or less, hot-rolling the ingot, cold-rolling the hot-rolled product, and providing the cold-rolled product with a solution heat treatment.Type: ApplicationFiled: March 26, 2001Publication date: January 17, 2002Inventors: Shinji Matsuda, Tsutomu Hattori, Masahito Katsukura, Tadashi Minoda, Hideo Yoshida, Shinichi Matsuda, Mineo Asano, Tsutomu Furuyama
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Publication number: 20010052253Abstract: A manufacturing method for manufacturing a bellows having pleat walls with S-shaped profiles comprises a primary forming process for forming a formed bellows, a pressing process for compressing the formed bellows in the axial direction, and a stretching process for pulling the compressed bellows in the axial direction, thereby obtaining desired pitches and free length. After the stretching process is carried out, the bellows is subjected to an annealing and ageing heat-treatment process. An apparatus for manufacturing the bellows comprises a pair of molds that have their respective forming surfaces in shapes corresponding individually to the pleat walls. The die is slightly retreated away from the pleat walls just before the dies open in the diametrical direction after the pleat walls are formed.Type: ApplicationFiled: June 8, 2001Publication date: December 20, 2001Applicant: NHK SPRING CO., LTD.Inventors: Hideki Okada, Tsutomu Furuyama
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Patent number: 5451366Abstract: A Ti--Al system intermetallic compound comprised of 25 at. % to 75 at. % of aluminum and the remainder of titanium. The compound includes 0.004 at. % to 1.0 at. % each of at least one halogen element selected from the group consisting of fluorine, chlorine, bromine and iodine. Alternatively, to provide a Ti--Al system intermetallic compound with oxidation resistance, the surface of the Ti--Al system intermetallic compound is heated to 800.degree. C. to 1125.degree. C. in a mixture of gas including 2 ppm to 1% by volume of at least one halogen element selected from the group consisting of fluorine, chlorine, bromine and iodine, and also including 0.1% by volume or more of oxygen. Thus, a dense aluminum oxide film is formed on the surface of the intermetallic compound. Alternatively, to form the dense aluminum oxide film, at least one halogen element is first disposed on the part providing the oxidation resistance of the intermetallic compound, and heated for 0.2 hour or longer at 800.degree. C. to 1125.degree.Type: GrantFiled: July 13, 1993Date of Patent: September 19, 1995Assignee: Sumitomo Light Metal Industries, Ltd.Inventors: Masaki Kumagai, Kazuhisa Shibue, Mok-soon Kim, Tsutomu Furuyama
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Patent number: 4996857Abstract: A first insert member and a head member are inserted in a cylindrical metal material. A liquid pressure chamber is defined in the material by the first insert member and the head member. First and second dies are situated corresponding to the head member and the first insert member, respectively. When a pressurized liquid is fed into the liquid pressure chamber, that portion of the material situated between the first and second dies bulges outward. As the first and second dies are driven to approach each other with the bulging portion between them, a pleat with a U-shaped section is formed.Type: GrantFiled: April 18, 1990Date of Patent: March 5, 1991Assignee: NHK Spring Co., Ltd.Inventors: Kenichi Kageyama, Kazuo Ohkoshi, Tsutomu Furuyama
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Patent number: 4715202Abstract: A coil-spring winding apparatus according to the present invention comprises a guide rail extending along the axis of a mandrel, and a carriage movably supported by the guide rail. The carriage is fitted with first and second guide rollers. The second guide roller, which is spaced from the first guide roller in the radial direction thereof, guides the coil forming a coil spring toward the first guide roller. The first guide roller is moved in the axial direction of the mandrel, at a speed determined by the rotating speed of the mandrel, so that the coil is wound at predetermined pitches. The second guide roller can pivot around a point near the point of contact between the first guide roller and the coil. The first guide roller is oriented always in the same direction as the second guide roller. The direction of these two guide rollers is changed by means of an actuator, depending on the pitch angle of the coil spring.Type: GrantFiled: April 13, 1987Date of Patent: December 29, 1987Assignee: NHK Spring Co. Ltd.Inventors: Masaharu Shibata, Tsutomu Furuyama, Kazuo Ohkoshi
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Patent number: 4444036Abstract: A method of forming a coil spring wherein, an element wire transferred longitudinally is passed between a support roller and a first pressing roller and then between the support roller and a second pressing roller. Coil springs with desired diameters are formed by varying the relative positions of the support roller and the first and second pressing rollers to curve the element wire with desired curvatures. The coil is supported to prevent it from sagging due to gravity acting thereon.Type: GrantFiled: July 10, 1981Date of Patent: April 24, 1984Assignee: NHK Spring Co., Ltd.Inventors: Masaharu Shibata, Tsutomu Furuyama