Patents by Inventor Yasuhisa Iwasaki
Yasuhisa Iwasaki 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: 11802607Abstract: A damper device includes: a first rotating body rotating around a rotation shaft and receiving power transmitted from a flywheel; a second rotating body including a first plate receiving the power transmitted from the first rotating body and a second plate disposed to face the first plate and rotating integrally with the first plate; a third rotating body rotating relative to the second rotating body around the rotation shaft; a fastening body integrating the first and second plates at a position radially spaced apart from a position where the power is transmitted from the first rotating body to the first plate; and an elastic mechanism elastically interconnecting the second and third rotating bodies in a rotation direction. The first plate is provided with a restricting portion restricting relative rotation of the third rotating body beyond a predetermined torsion angle.Type: GrantFiled: March 9, 2020Date of Patent: October 31, 2023Assignee: AISIN CORPORATIONInventors: Tomohiro Saeki, Yasuhisa Iwasaki
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Patent number: 11454296Abstract: A damper device includes: a first rotary body including a first plate rotating around a rotation shaft and a second plate disposed facing the first plate and integrally rotating with the first plate; a second rotary body rotating relative to the first rotary body; a control plate disposed between the first plate and the second rotary body in an axial direction and engaged with the second rotary body to rotate integrally therewith; a first thrust member a part of which is disposed between the first plate and the control plate in the axial direction and engaged with the first plate to rotate integrally therewith; and a second thrust member a part of which is disposed between the second plate and the second rotary body and engaged with the second plate to rotate integrally with the first rotary body.Type: GrantFiled: June 24, 2020Date of Patent: September 27, 2022Assignee: AISIN CORPORATIONInventors: Tomohiro Saeki, Yasuhisa Iwasaki
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Publication number: 20210041006Abstract: A damper device includes: a first rotating body rotating around a rotation shaft and receiving power transmitted from a flywheel; a second rotating body including a first plate receiving the power transmitted from the first rotating body and a second plate disposed to face the first plate and rotating integrally with the first plate; a third rotating body rotating relative to the second rotating body around the rotation shaft; a fastening body integrating the first and second plates at a position radially spaced apart from a position where the power is transmitted from the first rotating body to the first plate; and an elastic mechanism elastically interconnecting the second and third rotating bodies in a rotation direction. The first plate is provided with a restricting portion restricting relative rotation of the third rotating body beyond a predetermined torsion angle.Type: ApplicationFiled: March 9, 2020Publication date: February 11, 2021Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Tomohiro SAEKI, Yasuhisa IWASAKI
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Publication number: 20210041007Abstract: A damper device includes: a first rotary body including a first plate rotating around a rotation shaft and a second plate disposed facing the first plate and integrally rotating with the first plate; a second rotary body rotating relative to the first rotary body; a control plate disposed between the first plate and the second rotary body in an axial direction and engaged with the second rotary body to rotate integrally therewith; a first thrust member a part of which is disposed between the first plate and the control plate in the axial direction and engaged with the first plate to rotate integrally therewith; and a second thrust member a part of which is disposed between the second plate and the second rotary body and engaged with the second plate to rotate integrally with the first rotary body.Type: ApplicationFiled: June 24, 2020Publication date: February 11, 2021Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Tomohiro SAEKI, Yasuhisa IWASAKI
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Patent number: 9321448Abstract: A vehicle drive system includes a transmission, a clutch, and a shift execution portion. The shift execution portion operates the shift actuator to control the connecting portion in an engaged state engaged with the idler gear of a present gear stage to disengage from the idler gear of the present gear stage while gradually decreasing the engine torque while the clutch is still engaged, when a shift operation from the present gear stage to a subsequent gear stage is executed.Type: GrantFiled: February 20, 2014Date of Patent: April 26, 2016Assignee: Aisin Seiki Kabushiki KaishaInventors: Kyosuke Mori, Yasuhisa Iwasaki, Yoshihiro Murakami, Shinya Harada
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Patent number: 9169879Abstract: A dog clutch control apparatus for an automated transmission includes a dog clutch transmission mechanism including a clutch ring, a clutch hub, a sleeve, an axial driving device, a dog clutch portion, a stroke position sensor, and a spline of the sleeve including high teeth and a low tooth, the dog clutch portion including clutch front teeth and clutch rear teeth, wherein in a rotation adjustment range, a control apparatus controls a thrust load of the axial driving device so that a first thrust load is applied to the sleeve, and the first thrust load generates a relative rotation between the sleeve and the dog clutch portion against a frictional force generated by contact between an end surface of each of the high teeth and a front end surface of each of the clutch rear teeth.Type: GrantFiled: January 30, 2014Date of Patent: October 27, 2015Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Kyosuke Mori, Yasuhisa Iwasaki, Keisuke Mishima, Yusuke Yoshida, Masahiko Komura
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Patent number: 9038493Abstract: An automatic shift device for an automated transmission for a vehicle includes a rotation shaft, a clutch ring, a clutch hub, a sleeve, a dog clutch portion, a shaft moving apparatus, and a control portion. The control portion includes a push force reduction control portion performing a push force reduction control reducing a push force of the sleeve that the shaft moving apparatus applies on the clutch rear teeth in response to a back and forth movement of the sleeve after the sleeve reaches an end surface of the clutch rear tooth. The control portion includes a retry control portion performing a retry control that re-applies the push force of the sleeve in response to a predetermined retry condition after the push force reduction control is performed.Type: GrantFiled: March 19, 2014Date of Patent: May 26, 2015Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Yasuhisa Iwasaki, Kyosuke Mori, Yusuke Yoshida, Keisuke Mishima, Masahiko Komura
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Patent number: 9016156Abstract: A dog clutch control apparatus for an automated transmission includes a rotary shaft, a dog clutch transmission mechanism including a clutch ring, a clutch hub, a sleeve including a spline, an axial driving device, a dog clutch portion provided at the clutch ring, a rotation speed detection sensor, the spline including high teeth and a low tooth, clutch rear teeth and clutch front teeth formed at the dog clutch portion, and a control unit controlling an operation of the axial driving device based on a deceleration gradient of a rotation speed of either one of the sleeve and the clutch ring detected by the rotation speed detection sensor and controlling the axial driving device so that a decreased thrust load is applied to the clutch rear teeth from the sleeve in a case where the deceleration gradient is smaller than a first predetermined value.Type: GrantFiled: March 20, 2014Date of Patent: April 28, 2015Assignee: Aisin Seiki Kabushiki KaishaInventors: Yasuhisa Iwasaki, Yusuke Yoshida
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Patent number: 9010512Abstract: A dog clutch for an automated transmission includes a rotary shaft rotatably connecting to one of an input shaft and an output shaft of the automated transmission, a clutch ring rotatably supported by the rotary shaft and rotatably connecting to the other of the input shaft and the output shaft, a clutch hub fixed to the rotary shaft, a sleeve including first teeth and second teeth, an axial driving device moving the sleeve, and a dog clutch portion arranged at the clutch ring, the dog clutch portion including: clutch forward teeth each having an engagement portion contactable with each of the first teeth, and inclined surfaces extending from the engagement portion toward both sides in a circumferential direction and inclined toward a rear end position of the dog clutch portion; and a clutch rearward tooth portion engageable with the second teeth and including clutch rearward teeth.Type: GrantFiled: March 1, 2013Date of Patent: April 21, 2015Assignee: Aisin Seiki Kabushiki KaishaInventors: Kyosuke Mori, Yasuhisa Iwasaki, Shinya Harada
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Patent number: 9004250Abstract: A dog clutch for an automated transmission includes a rotary shaft, a clutch ring, a hub, a sleeve including a spline that includes a plurality of first teeth and second teeth, a whole depth of each of the first teeth being greater than a whole depth of each of the second teeth, a dog clutch portion including clutch forward teeth, the teeth number of clutch forward teeth being equal to the teeth number of first teeth, each of the clutch forward teeth being formed at a position facing each of the first teeth to extend from a front end surface to a rear end position of the dog clutch portion, the dog clutch portion including clutch rearward teeth engageable with tooth grooves formed at the spline and formed to extend from a position retracted by a first predetermined distance from the front end surface to the rear end position.Type: GrantFiled: March 1, 2013Date of Patent: April 14, 2015Assignee: Aisin Seiki Kabushiki KaishaInventors: Kyosuke Mori, Yasuhisa Iwasaki, Masahiro Yoshida, Tomonori Tada
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Publication number: 20140291102Abstract: A dog clutch control apparatus for an automated transmission includes a rotary shaft, a dog clutch transmission mechanism including a clutch ring, a clutch hub, a sleeve including a spline, an axial driving device, a dog clutch portion provided at the clutch ring, a rotation speed detection sensor, the spline including high teeth and a low tooth, clutch rear teeth and clutch front teeth formed at the dog clutch portion, and a control unit controlling an operation of the axial driving device based on a deceleration gradient of a rotation speed of either one of the sleeve and the clutch ring detected by the rotation speed detection sensor and controlling the axial driving device so that a decreased thrust load is applied to the clutch rear teeth from the sleeve in a case where the deceleration gradient is smaller than a first predetermined value.Type: ApplicationFiled: March 20, 2014Publication date: October 2, 2014Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Yasuhisa IWASAKI, Yusuke YOSHIDA
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Publication number: 20140283637Abstract: An automatic shift device for an automated transmission for a vehicle includes a rotation shaft, a clutch ring, a clutch hub, a sleeve, a dog clutch portion, a shaft moving apparatus, and a control portion. The control portion includes a push force reduction control portion performing a push force reduction control reducing a push force of the sleeve that the shaft moving apparatus applies on the clutch rear teeth in response to a back and forth movement of the sleeve after the sleeve reaches an end surface of the clutch rear tooth. The control portion includes a retry control portion performing a retry control that re-applies the push force of the sleeve in response to a predetermined retry condition after the push force reduction control is performed.Type: ApplicationFiled: March 19, 2014Publication date: September 25, 2014Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Yasuhisa IWASAKI, Kyosuke MORI, Yusuke YOSHIDA, Keisuke MISHIMA, Masahiko KOMURA
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Publication number: 20140235405Abstract: A vehicle drive system includes a transmission, a clutch, and a shift execution portion. The shift execution portion operates the shift actuator to control the connecting portion in an engaged state engaged with the idler gear of a present gear stage to disengage from the idler gear of the present gear stage while gradually decreasing the engine torque while the clutch is still engaged, when a shift operation from the present gear stage to a subsequent gear stage is executed.Type: ApplicationFiled: February 20, 2014Publication date: August 21, 2014Applicant: Aisin Seiki Kabushiki KaishaInventors: Kyosuke MORI, Yasuhisa Iwasaki, Yoshihiro Murakami, Shinya Harada
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Publication number: 20140209426Abstract: A dog clutch control apparatus for an automated transmission includes a dog clutch transmission mechanism including a clutch ring, a clutch hub, a sleeve, an axial driving device, a dog clutch portion, a stroke position sensor, and a spline of the sleeve including high teeth and a low tooth, the dog clutch portion including clutch front teeth and clutch rear teeth, wherein in a rotation adjustment range, a control apparatus controls a thrust load of the axial driving device so that a first thrust load is applied to the sleeve, and the first thrust load generates a relative rotation between the sleeve and the dog clutch portion against a frictional force generated by contact between an end surface of each of the high teeth and a front end surface of each of the clutch rear teeth.Type: ApplicationFiled: January 30, 2014Publication date: July 31, 2014Applicant: Aisin Seiki Kabushiki KaishaInventors: Kyosuke MORI, Yasuhisa IWASAKI, Keisuke MISHIMA, Yusuke YOSHIDA, Masahiko KOMURA
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Publication number: 20140213410Abstract: A vehicle parking apparatus includes an engine, an electric motor, a transmission apparatus, a parking detection member, and a control unit. The transmission apparatus includes a first gear train configured to connect between the engine and a driving wheel, a second gear train configured to connect between the electric motor and the driving wheel, and a first switching mechanism selectively connecting and disconnecting between a predetermined first rotation element in the first gear train and a predetermined second rotation element in the second gear train. The control unit connects between the engine and the driving wheel by the first gear train, disconnects between the electric motor and the driving wheel by the second gear train, and disconnects the second gear train from the first gear train by the first switching mechanism in a case where the parking detection member detects the parked state of the vehicle.Type: ApplicationFiled: January 28, 2014Publication date: July 31, 2014Applicant: Aisin Seiki Kabushiki KaishaInventors: Kyosuke MORI, Yasuhisa Iwasaki, Yoshihiro Murakami, Takahiro Misu
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Publication number: 20140026697Abstract: A vehicle drive system includes: an engine outputting a rotational torque; a drive shaft; a dog-clutch automatic transmission which includes an input shaft, an output shaft, plural idler gears idly rotatably arranged at one of the input shaft and the output shaft, plural fixed gears fixed to the other of the input shaft and the output shaft and engageable with the idler gears, respectively, plural dog clutches provided at a shaft at which the idler gears are arranged, and a selection mechanism moving each dog clutch in an axial direction of the shaft to allow the dog clutch to be engaged with the idler gear and to allow the dog clutch to be disengaged from the idler gear; a clutch arranged between the drive shaft and the input shaft; and a shift execution device configured to execute an up-shift operation from a present gear stage to a subsequent gear stage.Type: ApplicationFiled: June 28, 2013Publication date: January 30, 2014Inventors: Kyosuke MORI, Takahiro MISU, Yasuhisa IWASAKI, Shinya HARADA
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Publication number: 20130240318Abstract: A dog clutch for an automated transmission includes a rotary shaft rotatably connecting to one of an input shaft and an output shaft of the automated transmission, a clutch ring rotatably supported by the rotary shaft and rotatably connecting to the other of the input shaft and the output shaft, a clutch hub fixed to the rotary shaft, a sleeve including first teeth and second teeth, an axial driving device moving the sleeve, and a dog clutch portion arranged at the clutch ring, the dog clutch portion including: clutch forward teeth each having an engagement portion contactable with each of the first teeth, and inclined surfaces extending from the engagement portion toward both sides in a circumferential direction and inclined toward a rear end position of the dog clutch portion; and a clutch rearward tooth portion engageable with the second teeth and including clutch rearward teeth.Type: ApplicationFiled: March 1, 2013Publication date: September 19, 2013Applicant: Aisin Seiki Kabushiki KaishaInventors: Kyosuke MORI, Yasuhisa Iwasaki, Shinya Harada
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Publication number: 20130240317Abstract: A dog clutch for an automated transmission includes a rotary shaft, a clutch ring, a hub, a sleeve including a spline that includes a plurality of first teeth and second teeth, a whole depth of each of the first teeth being greater than a whole depth of each of the second teeth, a dog clutch portion including clutch forward teeth, the teeth number of clutch forward teeth being equal to the teeth number of first teeth, each of the clutch forward teeth being formed at a position facing each of the first teeth to extend from a front end surface to a rear end position of the dog clutch portion, the dog clutch portion including clutch rearward teeth engageable with tooth grooves formed at the spline and formed to extend from a position retracted by a first predetermined distance from the front end surface to the rear end position.Type: ApplicationFiled: March 1, 2013Publication date: September 19, 2013Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Kyosuke MORI, Yasuhisa IWASAKI, Masahiro YOSHIDA, Tomonori TADA
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Patent number: 6716993Abstract: The invention provides novel compounds which show high sensitivity to near-infrared rays in the region of 750-950 nm and, when processed to give films and so forth, undergo only slight discoloration and retain high transparency, hence can be used as near-infrared absorbing materials, together with an intermediate thereof. Thus provided are polymethine compounds of the general formula (I): wherein R1 and R2 each independently represents a hydrogen atom, an alkyl group or an alkoxy group, R3 represents an alkyl group, which may optionally be substituted, L represents an alkylene group necessary for the formation of a cyclic structure, X represents a hydrogen atom, a halogen atom or a substituted amino group, and Z represents an acidic residue, as well as near-infrared absorbing materials comprising the same.Type: GrantFiled: June 4, 2003Date of Patent: April 6, 2004Assignee: Yamamoto Chemicals, Inc.Inventors: Nobuaki Sasaki, Keiki Chichiishi, Shigeo Fujita, Yasuhisa Iwasaki
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Patent number: RE39105Abstract: The invention provides near infrared absorbing materials showing high light-to-heat conversion efficiency and high sensitivity to lasers whose emission bands are within the range of 750 nm to 900 nm, original plates for direct printing plate making, and novel compounds which can be applied to such absorbing materials and plates. The compounds are polymethine compounds of the general formula (I) A detailed description of general formula (I) may be found in the specification. wherein R1 represents an alkoxy group which may be substituted; R2 represents an alkyl group which may be substituted; R3 and R4 each represents a lower alkyl group or R3 and R4 taken together represent a ring; X represents a hydrogen atom, a halogen atom or a substituted amino group; Y represents an alkoxy group which may be substituted or an alkyl group which may be substituted; Z represents a charge neutralizing ion.Type: GrantFiled: January 23, 2004Date of Patent: May 23, 2006Assignee: Yamamoto Chemicals, Inc.Inventors: Shigeo Fujita, Nobuaki Sasaki, Keiki Chichiishi, Yasuhisa Iwasaki