Patents by Inventor Nobuhiro Nagata
Nobuhiro Nagata 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: 9890810Abstract: A squeeze film damper includes a bearing housing as an inner ring disposed around a radially outer side of a bearing which rotatably supports a rotary shaft, an outer ring disposed around a radially outer side of the bearing housing, a squeeze film formed by circulating a viscous fluid through a clearance in a radial direction between the bearing housing and the outer ring, and a coupling pin which couples the bearing housing and the outer ring to each other and is deformable in response to relative displacement in the radial direction between the outer ring and the bearing housing. The coupling pin has stiffness that is higher in a vertical direction than in a horizontal direction in a cross section perpendicular to an axial direction of the rotary shaft.Type: GrantFiled: December 2, 2014Date of Patent: February 13, 2018Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Rimpei Kawashita, Kenichi Fujikawa, Hideaki Sugishita, Naoya Okamoto, Nobuhiro Nagata
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Publication number: 20170002863Abstract: A squeeze film damper includes a bearing housing as an inner ring disposed around a radially outer side of a bearing which rotatably supports a rotary shaft, an outer ring disposed around a radially outer side of the bearing housing, a squeeze film formed by circulating a viscous fluid through a clearance in a radial direction between the bearing housing and the outer ring, and a coupling pin which couples the bearing housing and the outer ring to each other and is deformable in response to relative displacement in the radial direction between the outer ring and the bearing housing. The coupling pin has stiffness that is higher in a vertical direction than in a horizontal direction in a cross section perpendicular to an axial direction of the rotary shaft.Type: ApplicationFiled: December 2, 2014Publication date: January 5, 2017Inventors: Rimpei KAWASHITA, Kenichi FUJIKAWA, Hideaki SUGISHITA, Naoya OKAMOTO, Nobuhiro NAGATA
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Patent number: 7832764Abstract: The present invention relates to a knee protector structure for a vehicle. The present invention intends to make it possible to positively prevent an upper absorption bracket from being deformed with a tensile force exerted through a connecting bracket when a lower absorption bracket is deformed with knee input energy of a small-statured vehicle occupant. The knee protector structure for a vehicle according to the present invention comprises a lower absorption bracket 13 able to absorb knee input energy of a small-statured vehicle occupant, an upper absorption bracket 14 able to absorb knee input energy of a vehicle occupant of an average constitution, a connecting bracket 21 for connection between input-side end portions 18 and 20 of the lower absorption bracket 13 and the upper absorption bracket 14, and tensile force absorbing means 35 disposed near the input-side end portion 20 of the upper absorption bracket 14 and able to absorb a tensile force 34 exerted from the connecting bracket 21.Type: GrantFiled: April 21, 2006Date of Patent: November 16, 2010Assignee: Calsonic Kansei CorporationInventors: Tsutomu Kawashima, Shin Moteki, Nobuhiro Nagata, Keigo Hayata, Yoshiharu Nakamura, Yorihito Okuda
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Publication number: 20090146405Abstract: The present invention relates to a knee protector structure for a vehicle. The present invention intends to make it possible to positively prevent an upper absorption bracket from being deformed with a tensile force exerted through a connecting bracket when a lower absorption bracket is deformed with knee input energy of a small-statured vehicle occupant. The knee protector structure for a vehicle according to the present invention comprises a lower absorption bracket 13 able to absorb knee input energy of a small-statured vehicle occupant, an upper absorption bracket 14 able to absorb knee input energy of a vehicle occupant of an average constitution, a connecting bracket 21 for connection between input-side end portions 18 and 20 of the lower absorption bracket 13 and the upper absorption bracket 14, and tensile force absorbing means 35 disposed near the input-side end portion 20 of the upper absorption bracket 14 and able to absorb a tensile force 34 exerted from the connecting bracket 21.Type: ApplicationFiled: April 21, 2006Publication date: June 11, 2009Inventors: Tsutomu Kawashima, Shin Moteki, Nobuhiro Nagata, Keigo Hayata, Yoshiharu Nakamura, Yorihito Okuda
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Patent number: 7393012Abstract: A knee bolster structure includes a vehicle-side member, a knee-receiving member, an impact-absorbing section for absorbing an input energy from knees of a driver or front-seat passenger when the knees hit the knee-receiving section, and a knee-receiving member movement section for moving the knee-receiving member to a knee-receiving position for the driver or front-seat passenger, said knee-receiving member being attached to the vehicle-side member via the impact-absorbing section and the knee-receiving member movement section, the impact-absorbing section being structurally separated from the knee-receiving member movement section.Type: GrantFiled: November 19, 2004Date of Patent: July 1, 2008Assignee: Calsonic Kansei CorporationInventors: Kazuki Funakura, Nobuhiro Nagata, Tsutomu Kawashima
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Patent number: 7185917Abstract: A knee bolster structure includes an upper shock-absorbing member adapted for absorbing input force of knees of an occupant who has an average physical constitution and a lower shock-absorbing member adapted for absorbing input force of knees of an occupant who is small in stature, and a difference in strength between the upper shock-absorbing member and the lower shock-absorbing member is provided such that receiving strength of the upper shock-absorbing member is larger and receiving strength of the lower shock-absorbing member is smaller.Type: GrantFiled: September 14, 2004Date of Patent: March 6, 2007Assignee: Calsonic Kansei CorporationInventors: Nobuhiro Nagata, Tomiyuki Yasuno, Tsutomu Kawashima
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Publication number: 20050110250Abstract: A knee bolster structure includes a vehicle-side member, a knee-receiving member, an impact-absorbing section for absorbing an input energy from knees of a driver or front-seat passenger when the knees hit the knee-receiving section, and a knee-receiving member movement section for moving the knee-receiving member to a knee-receiving position for the driver or front-seat passenger, said knee-receiving member being attached to the vehicle-side member via the impact-absorbing section and the knee-receiving member movement section, the impact-absorbing section being structurally separated from the knee-receiving member movement section.Type: ApplicationFiled: November 19, 2004Publication date: May 26, 2005Inventors: Kazuki Funakura, Nobuhiro Nagata, Tsutomu Kawashima
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Publication number: 20050062276Abstract: A knee bolster structure includes an upper shock-absorbing member adapted for absorbing input force of knees of an occupant who has an average physical constitution and a lower shock-absorbing member adapted for absorbing input force of knees of an occupant who is small in stature, and a difference in strength between the upper shock-absorbing member and the lower shock-absorbing member is provided such that receiving strength of the upper shock-absorbing member is larger and receiving strength of the lower shock-absorbing member is smaller.Type: ApplicationFiled: September 14, 2004Publication date: March 24, 2005Inventors: Nobuhiro Nagata, Tomiyuki Yasuno, Tsutomu Kawashima
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Publication number: 20040164524Abstract: An airbag apparatus comprises an airbag lid (5) which is provided by a fragile line (3) on a resin instrument panel (2) and a door for holding (8) disposed in the back surface of the airbag lid (5) by fixing a boss (15) projected from the back surface of the airbag lid (5), and the holding door (8) includes an door body portion (9), an installation portion (10), and a hinge portion (11). In the airbag apparatus, a longitudinal bead (21) extending from the hinge portion (11) side to the leading end side of the door body portion (9) is provided, and lateral beads (22, 23) positioned between the hinge portion (11) and an installation portion (hole 16) to the boss disposed in the vicinity of the hinge portion (11) are provided; furthermore, the damage between the holding door and the airbag lid at the time of expanding the airbag can be prevented by constructing the longitudinal bead (21) and the lateral beads (22, 23) to be crossed.Type: ApplicationFiled: December 10, 2003Publication date: August 26, 2004Applicant: CALSONIC KANSEI CORPORATIONInventors: Kazumi Ono, Tsutomu Kawashima, Nobuhiro Nagata, Hiroaki Yamagishi
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Patent number: 6002015Abstract: A method of producing 1,2,4-triazole, comprising a step of subjecting a ketazine, water and formamide to a cyclization reaction. The ketazine and water are added simultaneously to formamide kept at a cyclization temperature. Then, ketone by-produced during the cyclization reaction is distilled off while maintaining the reaction mixture at a cyclization temperature to complete the cyclization reaction, thereby obtaining 1,2,4-triazole. The use of the ketazine in place of hydrazine makes the energy-consuming hydrolysis step in the conventional hydrazine production unnecessary. Therefore, the method of the invention is advantageous over the known methods in energy consumption and production cost.Type: GrantFiled: May 6, 1999Date of Patent: December 14, 1999Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Nobuhiro Nagata, Chiharu Nishizawa, Toshikiyo Kurai
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Patent number: 5986134Abstract: A process for continuously and stably synthesizing a ketazine from hydrogen peroxide, ammonia and methyl ethyl ketone in the presence of a solution containing a catalyst. The process comprises removing sec-butyl alcohol by distillation from methyl ethyl ketone, which is reused by circulation. Also a process for preparing a hydrazine hydrate which comprises hydrolyzing the ketazine. By circulating unreacted ketone, accumulation of impurities in the circulated ketone can be prevented to obtain a high yield of the ketazine and the hydrazine hydrate, for a long period of time.Type: GrantFiled: July 19, 1996Date of Patent: November 16, 1999Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Yasuhisa Kuriyama, Nobuhiro Nagata, Kiyoshi Yoshida
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Patent number: 5744115Abstract: A preparation process of hydrazine hydrate is herein disclosed which comprises the step of hydrolyzing a ketazine in a distillation column to obtain hydrazine hydrate, a nonionic surface active agent having a polyoxyethylene group in its molecule and/or silicon dioxide being present in the distillation column.According to this process, in the hydrolytic distillation of the ketazine, flooding can be inhibited and thus a stable operation can be accomplished. As a result, hydrazine hydrate can economically advantageously be prepared.Type: GrantFiled: July 19, 1996Date of Patent: April 28, 1998Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Yasuhisa Kuriyama, Nobuhiro Nagata, Kiyoshi Yoshida