Patents by Inventor Masashi Aikawa
Masashi Aikawa 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: 7086978Abstract: Between a speed reducing mechanism (15, 17, 19) for speed-reducing drive power of an electric motor and a differential apparatus (7) for distributing speed-reduced drive power to axle ends is disposed a clutch (5) configured for interruptive transmission of drive power.Type: GrantFiled: February 3, 2004Date of Patent: August 8, 2006Assignee: Tochigi Fuji Sangyo Kabushiki KaishaInventors: Masashi Aikawa, Nobushi Yamazaki
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Publication number: 20060166777Abstract: Between a speed reducing mechanism (15, 17, 19) for speed-reducing drive power of an electric motor and a differential apparatus (7) for distributing speed-reduced drive power to axle ends is disposed a clutch (5) configured for interruptive transmission of drive power.Type: ApplicationFiled: March 21, 2006Publication date: July 27, 2006Applicant: Tochigi Fuji Sangyo Kabushiki KaishaInventors: Masashi Aikawa, Nobushi Yamazaki
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Patent number: 7074150Abstract: A differential gear mechanism includes a rotatable case driven by torque from an engine, a differential gear set housed in the case for differential distribution of the torque to a pair of output axes, comprising a first clutch, an annular plunger movable in a direction of the rotation axis and an annular electromagnetic actuator for actuation of the plunger in the direction of the rotation axis. The case further comprises a second clutch being slidable in the direction of the rotation axis and the second clutch is actuated by the plunger so as to be engaged with the first clutch.Type: GrantFiled: August 11, 2005Date of Patent: July 11, 2006Assignee: Miyoshi & MiyoshiInventors: Masaaki Fusegi, Masashi Aikawa
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Publication number: 20060144666Abstract: A magnetic-path member includes first and second magnetic portions positioned on inner and outer peripheral sides of the magnetic-path member respectively. The magnetic-path member includes a non-magnetic portion interposed between the first and second magnetic portions and coupling the first and second magnetic portions by heat sintering. Magnetic lines of force occurring from an electromagnet pass through the magnetic-path member.Type: ApplicationFiled: December 21, 2005Publication date: July 6, 2006Inventors: Masashi Aikawa, Koji Iizuka, Masayuki Sayama, Katsuyoshi Koike
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Publication number: 20060046890Abstract: An outer plate 31, which is used under a lubricated environment of a differential gear oil including a friction adjuster, is made of a SC tempered material which is subjected to nitriding treatment to suppress chemical adsorption of the friction adjuster. An inner plate 33 has paper on a surface thereof. The outer plate 31 and the inner plate 33 are provided to apply or release the torque between an outer differential case 3 and an inner differential case 5 of a rear differential device 1 having the outer differential case 3 and the inner differential case 5 capable of relatively rotating to the inside and the outside.Type: ApplicationFiled: August 31, 2005Publication date: March 2, 2006Applicant: Tochigi Fuji Sangyo Kabushiki KaishaInventor: Masashi Aikawa
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Publication number: 20050277510Abstract: A differential gear mechanism includes a rotatable case driven by torque from an engine, a differential gear set housed in the case for differential distribution of the torque to a pair of output axes, comprising a first clutch, an annular plunger movable in a direction of the rotation axis and an annular electromagnetic actuator for actuation of the plunger in the direction of the rotation axis. The case further comprises a second clutch being slidable in the direction of the rotation axis and the second clutch is actuated by the plunger so as to be engaged with the first clutch.Type: ApplicationFiled: August 11, 2005Publication date: December 15, 2005Applicant: Tochigi Fuji Sangyo Kabushiki KaishaInventors: Masaaki Fusegi, Masashi Aikawa
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Patent number: 6966863Abstract: An actuator 1 is disclosed including a stationary member 15, a rotational member 17 disposed for rotating capability with respect to the stationary member 15, a movable member 19 disposed for movements with respect to the rotational member 17, a drive power source 25 rotating the rotational member 17, and a converting mechanism disposed between the rotational member 17 and the movable member 19 to convert rotation of the rotational member to an operating force for an operative unit.Type: GrantFiled: March 25, 2003Date of Patent: November 22, 2005Assignee: Tochigi Fuji Sangyo Kabushiki KaishaInventors: Masao Teraoka, Noriyuki Sudou, Giichirou Takahashi, Masaaki Fusegi, Masashi Aikawa, Tetsushi Tomita
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Patent number: 6959799Abstract: An actuator for engagement and disengagement operation of a power transmission device is provided with a first plate being fixed, a second plate being movable in a direction of the engagement and disengagement operation so as to be engaged with the first plate, a third plate disposed opposite to the second plate with respect to the first plate, the third plate being rotatably engaged with the second plate, a drive unit engageable with the third plate so as to rotate the third plate, a cam mechanism converting a rotation of the third plate to a movement of the second plate in the direction of the engagement and disengagement operation and a retaining device restricting a relative rotation range of the third plate with respect to the drive unit. The second plate moved by the cam mechanism drives the power transmission device in the direction of the engagement and disengagement operation so as to intermit a power transmission thereof.Type: GrantFiled: August 5, 2003Date of Patent: November 1, 2005Assignee: Tochigi Fuji Sangyo Kabushiki KaishaInventors: Masaaki Fusegi, Masashi Aikawa, Masao Teraoka, Tetsushi Tomita, Noriyuki Sudou
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Patent number: 6945895Abstract: A differential gear mechanism includes a rotatable case driven by torque from an engine, a differential gear set housed in the case for differential distribution of the torque to a pair of output axes, comprising a first clutch, an annular plunger movable in a direction of the rotation axis and an annular electromagnetic actuator for actuation of the plunger in the direction of the rotation axis. The case further comprises a second clutch being slidable in the direction of the rotation axis and the second clutch is actuated by the plunger so as to be engaged with the first clutch.Type: GrantFiled: April 10, 2002Date of Patent: September 20, 2005Assignee: Tochigi Fuji Sangyo Kabushiki KaishaInventors: Masaaki Fusegi, Masashi Aikawa
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Patent number: 6827661Abstract: The differential (13) includes a clutch system. The clutch system includes a clutch (41a, 43a) for being displaced to establish engagement thereof. The clutch system includes an actuator (61) for operating the clutch. The actuator includes a solenoid (63). The actuator a plunger (65, 67, 73) driven by the solenoid for giving a displacement to the clutch. The differential includes a rotatable driving member (31). The differential includes a differential mechanism (45, 49, 51 and 53) driven by the driving member. The clutch interlocks the driving member and the differential mechanism with each other.Type: GrantFiled: February 25, 2003Date of Patent: December 7, 2004Assignee: Tochigi Fuji Sangyo Kabushiki KaishaInventors: Masaaki Fusegi, Masashi Aikawa
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Publication number: 20040154853Abstract: Between a speed reducing mechanism (15, 17, 19) for speed-reducing drive power of an electric motor and a differential apparatus (7) for distributing speed-reduced drive power to axle ends is disposed a clutch (5) configured for interruptive transmission of drive power.Type: ApplicationFiled: February 3, 2004Publication date: August 12, 2004Applicant: Tochigi Fuji Sangyo Kabushiki KaishaInventors: Masashi Aikawa, Nobushi Yamazaki
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Patent number: 6770005Abstract: Between a speed reducing mechanism (15, 17, 19) for speed-reducing drive power of an electric motor and a differential apparatus (7) for distributing speed-reduced drive power to axle ends is disposed a clutch (5) configured for interruptive transmission of drive power.Type: GrantFiled: April 9, 2001Date of Patent: August 3, 2004Assignee: Tochigi Fuji Sangyo Kabushiki KaishaInventors: Masashi Aikawa, Nobushi Yamazaki
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Publication number: 20040142786Abstract: An actuator for engagement and disengagement operation of a power transmission device is provided with a first plate being fixed, a second plate being movable in a direction of the engagement and disengagement operation so as to be engaged with the first plate, a third plate disposed opposite to the second plate with respect to the first plate, the third plate being rotatably engaged with the second plate, a drive unit engageable with the third plate so as to rotate the third plate, a cam mechanism converting a rotation of the third plate to a movement of the second plate in the direction of the engagement and disengagement operation and a retaining device restricting a relative rotation range of the third plate with respect to the drive unit. The second plate moved by the cam mechanism drives the power transmission device in the direction of the engagement and disengagement operation so as to intermit a power transmission thereof.Type: ApplicationFiled: August 5, 2003Publication date: July 22, 2004Applicant: TOCHIGI FUJI SANGYO KABUSHIKI KAISHAInventors: Masaaki Fusegi, Masashi Aikawa, Masao Teraoka, Tetsushi Tomita, Noriyuki Sudou, Toshio Shiba, Katsumi Tanaka
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Publication number: 20030184171Abstract: An actuator 1 is disclosed including a stationary member 15, a rotational member 17 disposed for rotating capability with respect to the stationary member 15, a movable member 19 disposed for movements with respect to the rotational member 17, a drive power source 25 rotating the rotational member 17, and a converting mechanism disposed between the rotational member 17 and the movable member 19 to convert rotation of the rotational member to an operating force for an operative unit.Type: ApplicationFiled: March 25, 2003Publication date: October 2, 2003Inventors: Masao Teraoka, Noriyuki Sudou, Giichirou Takahashi, Maaaki Fusegi, Masashi Aikawa, Tetsushi Tomita
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Publication number: 20030162622Abstract: The differential (13) includes a clutch system. The clutch system includes a clutch (41a, 43a) for being displaced to establish engagement thereof. The clutch system includes an actuator (61) for operating the clutch. The actuator includes a solenoid (63). The actuator a plunger (65,67,73) driven by the solenoid for giving a displacement to the clutch. The differential includes a rotatable driving member (31). The differential includes a differential mechanism (45, 49, 51 and 53) driven by the driving member. The clutch interlocks the driving member and the differential mechanism with each other.Type: ApplicationFiled: February 25, 2003Publication date: August 28, 2003Applicant: TOCHIGI FUJI SANGYO KABUSHIKI KAISHAInventors: Masaaki Fusegi, Masashi Aikawa
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Publication number: 20020155913Abstract: A differential gear mechanism includes a rotatable case driven by torque from an engine, a differential gear set housed in the case for differential distribution of the torque to a pair of output axes, comprising a first clutch, an annular plunger movable in a direction of the rotation axis and an annular electromagnetic actuator for actuation of the plunger in the direction of the rotation axis. The case further comprises a second clutch being slidable in the direction of the rotation axis and the second clutch is actuated by the plunger so as to be engaged with the first clutch.Type: ApplicationFiled: April 10, 2002Publication date: October 24, 2002Applicant: TOCHIGI FUJI SANGYO KABUSHIKI KAISHAInventors: Masaaki Fusegi, Masashi Aikawa
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Publication number: 20020019284Abstract: Between a speed reducing mechanism (15, 17, 19) for speed-reducing drive power of an electric motor and a differential apparatus (7) for distributing speed-reduced drive power to axle ends is disposed a clutch (5) configured for interruptive transmission of drive power.Type: ApplicationFiled: April 9, 2001Publication date: February 14, 2002Inventors: Masashi Aikawa, Nobushi Yamazaki
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Patent number: D524704Type: GrantFiled: November 30, 2004Date of Patent: July 11, 2006Assignee: Mazda Motor CorporationInventors: Iwao Koizumi, Satoshi Hayasaka, Yasutake Tsuchida, Kousuke Takahashi, Masashi Aikawa, Kiyoshi Kitsuki, Kazuya Hamada