Patents by Inventor Hiromasa Tanaka
Hiromasa 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: 20080297993Abstract: An electronic device mounting structure for fitting an ECU (electronic device) in an open space formed in a device mounting housing and for holding the ECU fitted in the open space by a holding finger formed on the device mounting housing, includes a stopper formed in the device mounting housing so as to be juxtaposed with the holding finger, the stopper being configured to prevent the ECU from falling out of the device mounting housing.Type: ApplicationFiled: June 12, 2008Publication date: December 4, 2008Applicant: NIFCO INC.Inventors: Tatsuma Nishida, Hiroshi Ueno, Atsumasa Matsui, Chihiro Tomita, Naohiro Shimajiri, Kazuo Yoshino, Kunio Kiyohara, Hiromasa Tanaka
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Publication number: 20080295644Abstract: A power transmission apparatus including a rotary unit (10) rotated by receiving the turning effort and a nut member (3) for coupling the rotary unit (10) to a rotary shaft (4) of a rotary device is disclosed. The nut member (3) has a central hole (3e) formed therethrough from one end surface (3c) to the other end surface (3d) thereof and an internally threaded portion (3g) formed in the central hole (3e). The internally threaded portion (3g) is forced onto an externally threaded portion (4b) formed on the rotary shaft (4) from the other end surface (3d) side thereby to be screwed to the rotary shaft (4) while at the same time coupling the rotary unit (10) to the rotary shaft (4). The apparatus further includes a cap (5) fitted onto the nut member (3) in such a manner as to cover and seal one end surface (3c) of the nut member and an outer peripheral surface (3i) of the nut member connected to the peripheral edge of the one end surface (3c).Type: ApplicationFiled: May 29, 2008Publication date: December 4, 2008Applicant: DENSO CORPORATIONInventors: Yoshiki Tada, Michiyasu Nosaka, Hiromasa Tanaka, Keiji Ishikawa
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Publication number: 20080253861Abstract: A method for shipping a torque limiting assembly comprises the steps of preparing a male member fitted with an internal thread of the torque limiting assembly, coating the male member with grease, fitting the male member into the internal thread of the torque limiting assembly, and shipping the torque limiting assembly. A unit for shipping a torque limiting assembly comprises the torque limiting assembly and the male member which is fitted with the internal thread of the torque limiting assembly, coating the male member with grease.Type: ApplicationFiled: April 8, 2008Publication date: October 16, 2008Applicant: DENSO CORPORATIONInventors: Yoshiki Tada, Michiyasu Nosaka, Shoji Kageyama, Hiromasa Tanaka
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Patent number: 7361884Abstract: A polarization independent optical isolator includes: a first birefringent plate that divides the receiver light from the optical transmission path into normal light and abnormal light to output the normal light and the abnormal light; a second birefringent plate that combines the normal light and the abnormal light to output the combined light to the light receiving element; an optical rotation unit that is disposed between the first birefringent plate and the second birefringent plate, rotates the polarization direction of the normal light and the abnormal light which are outputted from the first birefringent plate by substantially 90° and outputs the rotated light, and outputs the reflected light of the receiver light in a state where the polarization direction of the reflected light is not rotated; and a polarizing element that is disposed between the optical rotation unit and the second birefringent plate, allows one of the normal light and the abnormal light which are inputted from the optical rotationType: GrantFiled: January 12, 2007Date of Patent: April 22, 2008Assignee: Fujitsu LimitedInventors: Hiromasa Tanaka, Kazuyuki Mori
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Publication number: 20080081118Abstract: A dope producing apparatus is provided with a first feed line for sending polymer solution from a fourth tank to a solution casting apparatus. The first feed line is provided with a first orifice for adding dilute liquid to the polymer solution; a first inline mixer for inline-mixing the polymer solution and the dilute liquid to produce a mixture; a second orifice for adding matting liquid to the mixture; and a second inline mixer for mixing the mixture and the matting liquid to produce a first dope.Type: ApplicationFiled: September 28, 2007Publication date: April 3, 2008Applicant: FUJIFILM CorporationInventors: Hiromasa Tanaka, Ryuhei Yoshida, Yuji Suzuki
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Publication number: 20080056064Abstract: An inline mixing device (53) is constituted of a sulzer mixer (160) disposed in an upper stream and a static mixer (170) disposed in a downstream. An additive supplied through an orifice (150a) passes through the sulzer mixer (160) disposed in the upstream. As the sulzer mixer (160) is superior in dividing the flow, the additive is uniformly dispersed in a dope pipe (152). Thereafter, the additive passes through the static mixer (170). As the static mixer (170) is superior in reversing the flow, the additive and the primary dope are further stirred and kneaded. The inline mixing device (53) uses the two different kinds of mixers for effectively mixing the additive and the dope while taking advantages of each mixer.Type: ApplicationFiled: July 28, 2005Publication date: March 6, 2008Applicant: FUJIFILM CorporationInventor: Hiromasa Tanaka
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Publication number: 20080042050Abstract: A polarization independent optical isolator includes: a first birefringent plate that divides the receiver light from the optical transmission path into normal light and abnormal light to output the normal light and the abnormal light; a second birefringent plate that combines the normal light and the abnormal light to output the combined light to the light receiving element; an optical rotation unit that is disposed between the first birefringent plate and the second birefringent plate, rotates the polarization direction of the normal light and the abnormal light which are outputted from the first birefringent plate by substantially 90° and outputs the rotated light, and outputs the reflected light of the receiver light in a state where the polarization direction of the reflected light is not rotated; and a polarizing element that is disposed between the optical rotation unit and the second birefringent plate, allows one of the normal light and the abnormal light which are inputted from the optical rotationType: ApplicationFiled: January 12, 2007Publication date: February 21, 2008Applicant: FUJITSU LIMITED ofInventors: Hiromasa Tanaka, Kazuyuki Mori
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Publication number: 20070222107Abstract: A primary dope is obtained by mixing a solvent and a polymer, and an additive is added to the primary dope, and thus a second dope for a main layer, a first dope for a contact layer and a third dope for an exposure layer are prepared. Only in the second dope is contained at least one of retardation controller, UV absorbing agent and deterioration inhibitor. The first-third dopes are cast from a casting die onto a casting belt to form a casting film of a three layer structure having the base, contact and exposure layers. Since the volatile compound is contained in the main layer, a precipitation of the volatile compounds on a surface of a produced film is prevented.Type: ApplicationFiled: March 22, 2007Publication date: September 27, 2007Applicant: FUJIFILM CorporationInventors: Hiromasa Tanaka, Koju Ito
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Publication number: 20070101736Abstract: A refrigerant cycle device includes a compressor driven by a vehicle engine for drawing and compressing gas refrigerant from an evaporator, a variable displacement mechanism which varies a discharge capacity of the compressor based on a control value from an exterior to approach a suction pressure of the compressor to a predetermined suction pressure, and a control unit for controlling the discharge capacity of the compressor. The control unit includes a determining part for determining an accelerating state of the vehicle engine, a detecting member which detects a thermal load of the evaporator, a setting part for setting a minimum control value in accordance with the thermal load, and a controlling part. The controlling part reduces the control value to the minimum control value and returns the reduced control value to a control value before the reducing, when the determining means determines an accelerating state of the vehicle engine.Type: ApplicationFiled: October 17, 2006Publication date: May 10, 2007Applicant: DENSO CORPORATIONInventors: Yoshikatsu Sawada, Yasutane Hijikata, Hiromasa Tanaka, Takashi Tanaka
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Patent number: 7196310Abstract: A light receiving device is disclosed by which a reception characteristic of a light receiving system can be improved. The light receiving device includes a photoelectric conversion element for receiving a light signal and performing photoelectric conversion of the light signal, and a data detection section for using an decision level for the light signal received by the photoelectric conversion element to detect modulation data included in the light signal. The light received device further includes an decision level control section for feedforward controlling the decision level to be used by the data detection section based on a level of the received light signal.Type: GrantFiled: November 23, 2004Date of Patent: March 27, 2007Assignee: Fujitsu LimitedInventors: Ken-ichi Nakamoto, Satoshi Ide, Kazuyuki Mori, Hiromasa Tanaka
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Publication number: 20060073047Abstract: The value of an estimated drive torque is prevented from greatly differing from an actual drive torque of a variable displacement compressor immediately after a refrigerating cycle is started. A first estimated drive torque that is calculated based on a physical quantity other than the pressure of a refrigerant and increases with lapse of time after the variable displacement compressor begins to compress the refrigerant and a second estimated drive torque calculated using the pressure of the refrigerant are compared and the one with the value closer to the actual drive torque is employed as an estimated drive torque of the variable displacement compressor.Type: ApplicationFiled: September 30, 2005Publication date: April 6, 2006Applicant: DENSO CorporationInventors: Shigeki Ohya, Toshio Tsuboko, Hiromasa Tanaka, Takashi Chikakiyo
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Publication number: 20060066005Abstract: An additive is fed in a tube which is connected to a pipe for feeding a polymer solution, and a nozzle is provided in a front end of the tube. On a front end of the nozzle, a slit like slit is formed so as to extend in a diameter direction of the pipe. The front end is almost perpendicular to an upstream end of the nearest element of a static mixer. When the additive is added to the polymer solution through the slit, the additive is separated enough from a forward side of the static mixer, and the addition is made without rotation of the additive. Thus the mixing and stirring of the polymer solution and the additive is effectively made.Type: ApplicationFiled: September 23, 2005Publication date: March 30, 2006Inventor: Hiromasa Tanaka
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Publication number: 20060043266Abstract: A light receiving device is disclosed by which a reception characteristic of a light receiving system can be improved. The light receiving device includes a photoelectric conversion element for receiving a light signal and performing photoelectric conversion of the light signal, and a data detection section for using an decision level for the light signal received by the photoelectric conversion element to detect modulation data included in the light signal. The light received device further includes an decision level control section for feedforward controlling the decision level to be used by the data detection section based on a level of the received light signal.Type: ApplicationFiled: November 23, 2004Publication date: March 2, 2006Applicant: Fujitsu LimitedInventors: Ken-ichi Nakamoto, Satoshi Ide, Kazuyuki Mori, Hiromasa Tanaka
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Patent number: 6808571Abstract: A heat resistant carburized rolling bearing component is formed of a steel material at least containing, as alloy elements in a matrix, by mass %, at least 0.1% and at most 0.4% of C, at least 0.3% and at most 3.0% of Si, at least 0.2% and at most 2.0% of Mn, at most 0.03% of P, at most 0.03% of S, at least 0.3% and less tan 2.5% of Cr, at least 0.1% and less than 2.0% of Ni, at most 0.050% of Al, at most 0.003% of Ti, at most 0.0015% of O and at most 0.025% of N, and a remaining part of Fe and an unavoidable impurity, and the bearing component is prepared by performing carburizing carbo-nitriding process followed by quenching, and after quenching, tempering at a tempering temperature of at least 200° C. and at most 350° C., and surface hardness after tempering process is at least HRC57.Type: GrantFiled: August 16, 2001Date of Patent: October 26, 2004Assignee: NTN CorporationInventors: Hiromasa Tanaka, Kikuo Maeda, Tosiya Kinami, Sadayuki Nakamura
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Publication number: 20030156921Abstract: A bolt according to the invention comprises: a coarse screw thread portion of pitch P, which is formed from the tip end portion of a bolt shank to a prescribed portion; and a fine screw thread portion of pitch p (p=P/n wherein n is an integer of 2 or more), which is formed so as to overlap the coarse screw thread portion for at least the entire length of the coarse screw thread portion of the bolt shank or from the tip end portion to the prescribed portion of the coarse screw thread portion. And, it is an object of the invention to provide a bolt that can be mass-produced at low cost, bring about excellent synchronicity, strength against compression and shear, and an excellent tightening force, and in which a nut screwed therein is scarcely loosened upon receiving a large vibration load.Type: ApplicationFiled: April 23, 2003Publication date: August 21, 2003Inventors: Masato Nagawa, Hideki Noda, Hiromasa Tanaka
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Publication number: 20020050308Abstract: A heat resistant carburized rolling bearing component is formed of a steel material at least containing, as alloy elements in a matrix, by mass %, at least 0.1% and at most 0.4% of C, at least 0.3% and at most 3.0% of Si, at least 0.2% and at most 2.0% of Mn, at most 0.03% of P, at most 0.03% of S, at least 0.3% and less tan 2.5% of Cr, at least 0.1% and less than 2.0% of Ni, at most 0.050% of Al, at most 0.003% of Ti, at most 0.0015% of O and at most 0.025% of N, and a remaining part of Fe and an unavoidable impurity, and the bearing component is prepared by performing carburizing-carbo-nitriding process followed by quenching, and after quenching, tempering at a tempering temperature of at least 200° C. and at most 350° C., and surface hardness after tempering process is at least HRC57.Type: ApplicationFiled: August 16, 2001Publication date: May 2, 2002Applicant: NTN CorporationInventors: Hiromasa Tanaka, Kikuo Maeda, Tosiya Kinami, Sadayuki Nakamura
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Publication number: 20020048290Abstract: In a conventional type method of suppressing the frequency chirp of signal light and a conventional type semiconductor laser using the method, high voltage is required to suppress the chirp and the speed of a response is not enough. The frequency chirp of signal light is also effectively reduced in high-speed modulation by adding another electroabsorption-type optical modulator for suppressing chirp to a semiconductor laser integrated with an electroabsorption-type optical modulator for modulating a signal.Type: ApplicationFiled: October 19, 2001Publication date: April 25, 2002Inventor: Hiromasa Tanaka
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Patent number: 6070689Abstract: A driver's seat and an engine are disposed side-by-side to maximize the advantages of a mid-engine vehicle layout. A driver's seat is offset leftwards with respect to a center line of a vehicle body in a one-seater vehicle, and a power unit integrally provided with the engine and transmission is disposed on the right of the center line of the vehicle body. When viewed from the side of the vehicle, the seat and the power unit overlap each other. Thus, the inertial moment about a yaw axis of the vehicle is minimized to enhance the turning performance and moreover, the distribution of load to front wheels Wf and rear wheels Wr is made uniform to enhance the performance of the vehicle when in motion.Type: GrantFiled: October 9, 1996Date of Patent: June 6, 2000Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hiromasa Tanaka, Noboru Ohta, Hideto Sakane, Yuichi Yamazaki, Masaki Kobayashi, Yasuyoshi Tanaka
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Patent number: 4881752Abstract: A rear wheel suspension system, comprising a pair of hub carriers each for rotatably supporting a wheel, a plurality of lateral links for coupling the hub carriers to a vehicle body, and a pair of shock absorbers each consisting of a spring and a linear hydraulic damper for controlling impacts which are applied to one of the wheels. The shock absorbers are arranged laterally of the vehicle body, and are each coupled between the vehicle body and one of the hub carriers by way of a bell crank mechanism which may have a progressive property. The ends of the shock absorbers on the side of the vehicle body which oppose each other may be pivotally coupled to each other by way of a coupling structure which relatively elastically attaches the opposing ends to the vehicle body but relatively rigidly supports mutually abutting axial forces from the shock absorbers.Type: GrantFiled: August 2, 1988Date of Patent: November 21, 1989Assignee: Honda Giken Kogyo Kabushiki KaishaInventor: Hiromasa Tanaka
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Patent number: 4778026Abstract: A propeller shaft in a motor vehicle includes a plurality of shaft members and a plurality of joints operatively coupled between the shaft members, between the engine of the motor vehicle and one of the shaft members, and between a differential coupled to drive wheels and one of the shaft members. At least one of the joints comprises a slidable tripod joint. The tripod joint gives the propeller shaft a desired torque transmission capability and axial sliding displacements, and enables the propeller shaft to have a practically sufficient service life for high-speed rotation.Type: GrantFiled: April 2, 1987Date of Patent: October 18, 1988Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yoichi Uchida, Akira Sasaki, Hiromasa Tanaka