Patents by Inventor Mitsunori Naruse
Mitsunori Naruse 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: 7308834Abstract: A torque sensor is provided with a torsion bar, first and second elongate sleeves respectively secured to one and the other ends of the torsion bar, and a pair of resolvers respectively mounted on the first and second elongate sleeves. First and second stop portions are provided respectively at overlapping portions of the first and second elongate sleeves where the second elongate sleeve is fit partly on the external surface of the first elongate sleeve with a play. A rotary sleeve given to one of the resolvers is press-fit on the external surface of the stop portion provided on the second elongate sleeve for mounting one of the resolvers thereon as well as for reinforcing the mechanical strength of the stop portion provided on the second elongate sleeve. Further, the resolvers used therein are chosen as those respectively having n-poles and m-poles.Type: GrantFiled: March 24, 2006Date of Patent: December 18, 2007Assignee: JTEKT CorporationInventors: Mitsunori Naruse, Yuji Yoshizawa, Yusuke Mochizuki
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Publication number: 20060162469Abstract: A torque sensor is provided with a torsion bar, first and second elongate sleeves respectively secured to one and the other ends of the torsion bar, and a pair of resolvers respectively mounted on the first and second elongate sleeves. First and second stop portions are provided respectively at overlapping portions of the first and second elongate sleeves where the second elongate sleeve is fit partly on the external surface of the first elongate sleeve with a play. A rotary sleeve given to one of the resolvers is press-fit on the external surface of the stop portion provided on the second elongate sleeve for mounting one of the resolvers thereon as well as for reinforcing the mechanical strength of the stop portion provided on the second elongate sleeve. Further, the resolvers used therein are chosen as those respectively having n-poles and m-poles.Type: ApplicationFiled: March 24, 2006Publication date: July 27, 2006Applicant: JTEKT CorporationInventors: Mitsunori Naruse, Yuji Yoshizawa, Yusuke Mochizuki
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Patent number: 7059204Abstract: A torque sensor is provided with a torsion bar, first and second elongate sleeves respectively secured to one and the other ends of the torsion bar, and a pair of resolvers respectively mounted on the first and second elongate sleeves. First and second stop portions are provided respectively at overlapping portions of the first and second elongate sleeves where the second elongate sleeve is fit partly on the external surface of the first elongate sleeve with a play. A rotary sleeve given to one of the resolvers is press-fit on the external surface of the stop portion provided on the second elongate sleeve for mounting one of the resolvers thereon as well as for reinforcing the mechanical strength of the stop portion provided on the second elongate sleeve. Further, the resolvers used therein are chosen as those respectively having n-poles and m-poles.Type: GrantFiled: March 26, 2004Date of Patent: June 13, 2006Assignee: Toyoda Koki Kabushiki KaishaInventors: Mitsunori Naruse, Yuji Yoshizawa, Yusuke Mochizuki
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Patent number: 6912921Abstract: A torque detecting device includes an elastic member disposed between an input shaft and an output shaft of a torque transmitting apparatus, first and second resolvers detecting rotational angles of the elastic member at sides of the input shaft and the output shaft. The first resolver includes a first excitation winding coil and a first output winding coil, and the second resolver includes a second excitation winding coil and a second output winding coil. The first and second excitation winding coils are connected to a ground, and the first and second output winding coils are connected to the other ground.Type: GrantFiled: April 25, 2003Date of Patent: July 5, 2005Assignee: Toyoda Koki Kabushiki KaishaInventors: Hidetoshi Fujiwara, Mitsunori Naruse, Yuji Yoshizawa, Mikihiko Mizuno
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Publication number: 20050022614Abstract: A torque sensor is provided with a torsion bar, first and second elongate sleeves respectively secured to one and the other ends of the torsion bar, and a pair of resolvers respectively mounted on the first and second elongate sleeves. First and second stop portions are provided respectively at overlapping portions of the first and second elongate sleeves where the second elongate sleeve is fit partly on the external surface of the first elongate sleeve with a play. A rotary sleeve given to one of the resolvers is press-fit on the external surface of the stop portion provided on the second elongate sleeve for mounting one of the resolvers thereon as well as for reinforcing the mechanical strength of the stop portion provided on the second elongate sleeve. Further, the resolvers used therein are chosen as those respectively having n-poles and m-poles.Type: ApplicationFiled: March 26, 2004Publication date: February 3, 2005Applicant: TOYODA KOKI KABUSHIKI KAISHAInventors: Mitsunori Naruse, Yuji Yoshizawa, Yusuke Mochizuki
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Publication number: 20040182626Abstract: A power steering device is provided which is capable of detecting an initial torque of torque detection means precisely in a short period of time in the initial setting therefor. In detecting the initial torque of the torque detection means, assist power generating means such as an electric motor for applying assist power to a handle shaft is used to rotate a steering handle within a minute rotational range in positive and negative-going directions from a neutral position in the steering direction. The rotation of the steering handle in this initial setting is performed so that the amplitude of the repetitive rotations in the positive and negative-going directions are decremented as time passes. Then, an output of the torque detection means is detected as the initial torque with the steering handle being held stationarily at the neutral position.Type: ApplicationFiled: February 4, 2004Publication date: September 23, 2004Applicant: TOYODA KOKI KABUSHIKI KAISHAInventors: Hideki Katou, Atsuhisa Asada, Yasutaka Fukumoto, Hajime Kamimae, Mitsunori Naruse, Tsutomu Matsumoto
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Publication number: 20040016306Abstract: A torque detecting device includes an elastic member disposed between an input shaft and an output shaft of a torque transmitting apparatus, first and second resolvers detecting rotational angles of the elastic member at sides of the input shaft and the output shaft. The first resolver includes a first excitation winding coil and a first output winding coil, and the second resolver includes a second excitation winding coil and a second output winding coil. The first and second excitation winding coils are connected to a ground, and the first and second output winding coils are connected to the other ground.Type: ApplicationFiled: April 25, 2003Publication date: January 29, 2004Applicant: TOYODA KOKI KABUSHIKI KAISHAInventors: Hidetoshi Fujiwara, Mitsunori Naruse, Yuji Yoshizawa, Mikihiko Mizuno
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Patent number: 5213491Abstract: An improved tandem pump operates satisfactorily even at low temperatures. The pump has a pump housing, a first rotor, plural first vanes held by the first rotor, a second rotor, and plural second vanes held by the second rotor. A first cam ring, an intermediate side plate, and a second cam ring are disposed side by side to constitute first and second pump chambers in the housing. The side plate is split into plural parts. Oil delivered by rotation of the first rotor is forced into a pressure chamber formed between the plural parts of the intermediate side plate. The portion of the inner end surface of each first vane which receives pressure is made smaller in area than the portion of the inner end surface of each second vane which receives pressure.Type: GrantFiled: February 18, 1992Date of Patent: May 25, 1993Assignee: Toyoda Koki Kabushiki KaishaInventors: Hidetoshi Fujiwara, Mitsunori Naruse