Patents by Inventor Kiyoharu Takagi
Kiyoharu Takagi 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: 9903447Abstract: An automatic transmission device for a vehicle includes a first planetary gear mechanism, a second planetary gear mechanism, a third planetary gear mechanism, a fourth planetary gear mechanism, an input shaft, an output shaft, six engaging elements including a first engaging element, a first clutch, a second clutch, a third clutch, a first brake and a second brake, a first connection member, a second connection member, a third connection member, a fourth connection member, a fifth connection member, and a sixth connection member. Nine forward speeds and one reverse speed are provided by an engagement of three engaging elements of the six engaging elements.Type: GrantFiled: June 30, 2016Date of Patent: February 27, 2018Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Kiyoharu Takagi, Atsuhiro Mase, Hideki Nakamura
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Patent number: 9835230Abstract: An automatic transmission includes a second planetary gear mechanism having a sun gear, a carrier, and a ring gear being defined as first, second and third elements, respectively, when a single pinion type planetary gear mechanism is applied; the carrier, the ring gear, and the sun gear being defined as the first, second, and third elements, respectively, when a double pinion type is applied; a first brake, a switching clutch being switchable to a first position where the third element is selectively fixed to a housing; a first clutch, a second clutch, a third clutch, and a fourth clutch. The first brake fixes a sun gear of a first planetary gear mechanism to the housing, the switching clutch fixes the third element to the housing, and the fourth clutch connects the second element to a carrier of the third planetary gear mechanism when establishing a reverse speed stage.Type: GrantFiled: December 15, 2015Date of Patent: December 5, 2017Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Hideki Nakamura, Kiyoharu Takagi, Atsuhiro Mase
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Publication number: 20170037938Abstract: An automatic transmission device for a vehicle includes a first planetary gear mechanism, a second planetary gear mechanism, a third planetary gear mechanism, a fourth planetary gear mechanism, an input shaft, an output shaft, six engaging elements including a first engaging element, a first clutch, a second clutch, a third clutch, a first brake and a second brake, a first connection member, a second connection member, a third connection member, a fourth connection member, a fifth connection member, and a sixth connection member. Nine forward speeds and one reverse speed are provided by an engagement of three engaging elements of the six engaging elements.Type: ApplicationFiled: June 30, 2016Publication date: February 9, 2017Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Kiyoharu Takagi, Atsuhiro Mase, Hideki Nakamura
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Patent number: 9562591Abstract: An automatic transmission device for a vehicle includes a first planetary gear mechanism, a second planetary gear mechanism, a third planetary gear mechanism, a fourth planetary gear mechanism, an input shaft, an output shaft, six engaging elements including a first engaging element, a second engaging element, a first clutch, a second clutch, a third clutch and a brake, a first connection member, a second connection member, a third connection member, a fourth connection member, a fifth connection member, a sixth connection member, a seventh connection member, an eighth connection member, and a ninth connection member.Type: GrantFiled: June 30, 2016Date of Patent: February 7, 2017Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Kiyoharu Takagi, Atsuhiro Mase, Hideki Nakamura
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Publication number: 20170030433Abstract: An automatic transmission device for a vehicle includes a first planetary gear mechanism, a second planetary gear mechanism, a third planetary gear mechanism, a fourth planetary gear mechanism, an input shaft, an output shaft, six engaging elements including a first engaging element, a second engaging element, a first clutch, a second clutch, a third clutch and a brake, a first connection member, a second connection member, a third connection member, a fourth connection member, a fifth connection member, a sixth connection member, a seventh connection member, an eighth connection member, and a ninth connection member.Type: ApplicationFiled: June 30, 2016Publication date: February 2, 2017Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Kiyoharu Takagi, Atsuhiro Mase, Hideki Nakamura
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Patent number: 9441709Abstract: An automatic transmission includes plural planetary gear mechanisms rotatably supported by a housing to be coaxial to a rotation axis, a ring gear of the foremost planetary gear mechanism being connected to a sun gear of the rearmost planetary gear mechanism, an input shaft being connected to a carrier of the foremost planetary gear mechanism, an output shaft being connected to a carrier of the rearmost planetary gear mechanism, a rotation member positioned at a radially outward of the ring gear of the rearmost planetary gear mechanism to be rotatable coaxially to the ring gear of the rearmost planetary gear mechanism, a brake selectively fixing the rotation member to the housing, a clutch selectively connecting the rotation member and a carrier of the planetary gear mechanism positioned at front relative to the rearmost planetary gear mechanism by one, and a dog clutch selectively connecting the ring gear of the rearmost planetary gear mechanism and the rotation member.Type: GrantFiled: October 31, 2014Date of Patent: September 13, 2016Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Hideki Nakamura, Kiyoharu Takagi, Atsuhiro Mase
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Patent number: 9416852Abstract: An automatic transmission for a vehicle includes a housing, three single pinion type planetary gear mechanisms being supported by the housing, an input shaft supported by the housing and connected to a first carrier, an output shaft connected to a third carrier, a brake, a first clutch selectively connecting the first carrier and a second sun gear, a second clutch, a third clutch, a fourth clutch, and a switching clutch. The switching clutch selectively switches positions to a position where a third ring gear is fixed to the housing, a position where a second carrier is fixed to the housing, or a position where the third ring gear and the second carrier are released relative to the housing. The first clutch connects the first carrier and the second sun gear, and the switching clutch fixes the second carrier to the housing when establishing a reverse speed.Type: GrantFiled: February 24, 2015Date of Patent: August 16, 2016Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Kiyoharu Takagi, Atsuhiro Mase, Hideki Nakamura
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Patent number: 9416851Abstract: An automatic transmission includes first to third planetary gear mechanisms; a second sun gear, a second carrier, and a second ring gear in a velocity diagram being defined as a first element, a second element, and a third element, respectively, in a case where a single pinion type planetary gear mechanism is applied as the second planetary gear mechanism; and the second carrier, the second ring gear, and the second sun gear in a velocity diagram being defined as the first element, the second element, and the third element, respectively, in a case where a double pinion type planetary gear mechanism is applied as the second planetary gear mechanism. A first brake fixes a first sun gear to a housing, a second clutch connects the first sun gear and the third element, and a fourth clutch connects the second element and a third carrier when a reverse speed is established.Type: GrantFiled: January 22, 2015Date of Patent: August 16, 2016Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Kiyoharu Takagi, Atsuhiro Mase, Hideki Nakamura
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Publication number: 20160169348Abstract: An automatic transmission includes a second planetary gear mechanism having a sun gear, a carrier, and a ring gear being defined as first, second and third elements, respectively, when a single pinion type planetary gear mechanism is applied; the carrier, the ring gear, and the sun gear being defined as the first, second, and third elements, respectively, when a double pinion type is applied; a first brake, a switching clutch being switchable to a first position where the third element is selectively fixed to a housing; a first clutch, a second clutch, a third clutch, and a fourth clutch. The first brake fixes a sun gear of a first planetary gear mechanism to the housing, the switching clutch fixes the third element to the housing, and the fourth clutch connects the second element to a carrier of the third planetary gear mechanism when establishing a reverse speed stage.Type: ApplicationFiled: December 15, 2015Publication date: June 16, 2016Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Hideki NAKAMURA, Kiyoharu TAKAGI, Atsuhiro MASE
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Patent number: 9347547Abstract: A transmission which includes a housing, a planetary gear mechanism, an input shaft, an output shaft, a brake including a friction member, a piston member pressing the friction member, and an actuator portion applying a pressing force to the piston member, the brake braking a rotation of one of a sun gear, a ring gear, and a carrier of the planetary gear mechanism, an external output gear positioned between the friction member and the actuator portion in a direction of a rotation axis, the external output gear provided at a member integrally rotating with the input shaft, and the piston member including an opening portion formed over a predetermined angular range about the rotation axis and within a range in the direction of the rotation axis in which the external output gear is disposed.Type: GrantFiled: March 16, 2015Date of Patent: May 24, 2016Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Hideki Nakamura, Kiyoharu Takagi, Atsuhiro Mase
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Patent number: 9322459Abstract: A vehicular automatic transmission, includes: a housing; input and output shafts sustained to be rotatable around a rotation shaft line in the housing; single pinion type first, second and third planetary gears sustained in parallel coaxially with the rotation shaft line; a first brake fixing a third ring gear of the third planetary gear to be disengageable with respect to the housing; a first clutch linking the third ring gear and a second carrier of the second planetary gear to be disengageable from each other; and a switching element blocking the link between the input shaft and the first carrier, and switching the input shaft to be in a switched state, wherein, in a reverse gear shift stage, the first clutch is in an engaged state, the first brake is in a fixed state, and the switching element is in a switched state.Type: GrantFiled: April 2, 2015Date of Patent: April 26, 2016Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Kiyoharu Takagi, Atsuhiro Mase, Hideki Nakamura
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Patent number: 9222552Abstract: A transmission includes a housing, four planetary mechanisms, four clutches, two brakes, plural connection members connecting elements of each of planetary mechanisms one another, an input shaft, and an output shaft. A first connection member at which the third clutch is positioned is positioned at an outer periphery side compared to a second connection member connecting a ring gear of the second planetary mechanism and a carrier of the third planetary mechanism. An installation surface to which a third brake braking a rotation of a connection part is addable and which is opposed to an inner periphery surface of the housing is formed at the connection part connecting the third clutch and a ring gear of the third planetary mechanism among the first connection member.Type: GrantFiled: September 25, 2014Date of Patent: December 29, 2015Assignee: AISIN SEIKI KABUSHIKI KAISHAInventors: Kiyoharu Takagi, Atsuhiro Mase, Hideki Nakamura
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Publication number: 20150285343Abstract: A vehicular automatic transmission, includes: a housing; input and output shafts sustained to be rotatable around a rotation shaft line in the housing; single pinion type first, second and third planetary gears sustained in parallel coaxially with the rotation shaft line; a first brake fixing a third ring gear of the third planetary gear to be disengageable with respect to the housing; a first clutch linking the third ring gear and a second carrier of the second planetary gear to be disengageable from each other; and a switching element blocking the link between the input shaft and the first carrier, and switching the input shaft to be in a switched state, wherein, in a reverse gear shift stage, the first clutch is in an engaged state, the first brake is in a fixed state, and the switching element is in a switched state.Type: ApplicationFiled: April 2, 2015Publication date: October 8, 2015Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Kiyoharu TAKAGI, Atsuhiro MASE, Hideki NAKAMURA
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Publication number: 20150267805Abstract: A transmission which includes a housing, a planetary gear mechanism, an input shaft, an output shaft, a brake including a friction member, a piston member pressing the friction member, and an actuator portion applying a pressing force to the piston member, the brake braking a rotation of one of a sun gear, a ring gear, and a carrier of the planetary gear mechanism, an external output gear positioned between the friction member and the actuator portion in a direction of a rotation axis, the external output gear provided at a member integrally rotating with the input shaft, and the piston member including an opening portion formed over a predetermined angular range about the rotation axis and within a range in the direction of the rotation axis in which the external output gear is disposed.Type: ApplicationFiled: March 16, 2015Publication date: September 24, 2015Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Hideki NAKAMURA, Kiyoharu TAKAGI, Atsuhiro MASE
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Publication number: 20150247555Abstract: An automatic transmission includes first to third planetary gear mechanisms; a second sun gear, a second carrier, and a second ring gear in a velocity diagram being defined as a first element, a second element, and a third element, respectively, in a case where a single pinion type planetary gear mechanism is applied as the second planetary gear mechanism; and the second carrier, the second ring gear, and the second sun gear in a velocity diagram being defined as the first element, the second element, and the third element, respectively, in a case where a double pinion type planetary gear mechanism is applied as the second planetary gear mechanism. A first brake fixes a first sun gear to a housing, a second clutch connects the first sun gear and the third element, and a fourth clutch connects the second element and a third carrier when a reverse speed is established.Type: ApplicationFiled: January 22, 2015Publication date: September 3, 2015Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Kiyoharu TAKAGI, Atsuhiro MASE, Hideki NAKAMURA
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Publication number: 20150247556Abstract: An automatic transmission for a vehicle includes a housing, three single pinion type planetary gear mechanisms being supported by the housing, an input shaft supported by the housing and connected to a first carrier, an output shaft connected to a third carrier, a brake, a first clutch selectively connecting the first carrier and a second sun gear, a second clutch, a third clutch, a fourth clutch, and a switching clutch. The switching clutch selectively switches positions to a position where a third ring gear is fixed to the housing, a position where a second carrier is fixed to the housing, or a position where the third ring gear and the second carrier are released relative to the housing. The first clutch connects the first carrier and the second sun gear, and the switching clutch fixes the second carrier to the housing when establishing a reverse speed.Type: ApplicationFiled: February 24, 2015Publication date: September 3, 2015Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Kiyoharu TAKAGI, Atsuhiro MASE, Hideki NAKAMURA
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Publication number: 20150133259Abstract: An automatic transmission includes plural planetary gear mechanisms rotatably supported by a housing to be coaxial to a rotation axis, a ring gear of the foremost planetary gear mechanism being connected to a sun gear of the rearmost planetary gear mechanism, an input shaft being connected to a carrier of the foremost planetary gear mechanism, an output shaft being connected to a carrier of the rearmost planetary gear mechanism, a rotation member positioned at a radially outward of the ring gear of the rearmost planetary gear mechanism to be rotatable coaxially to the ring gear of the rearmost planetary gear mechanism, a brake selectively fixing the rotation member to the housing, a clutch selectively connecting the rotation member and a carrier of the planetary gear mechanism positioned at front relative to the rearmost planetary gear mechanism by one, and a dog clutch selectively connecting the ring gear of the rearmost planetary gear mechanism and the rotation member.Type: ApplicationFiled: October 31, 2014Publication date: May 14, 2015Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Hideki NAKAMURA, Kiyoharu TAKAGI, Atsuhiro MASE
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Publication number: 20150087470Abstract: A transmission includes a housing, four planetary mechanisms, four clutches, two brakes, plural connection members connecting elements of each of planetary mechanisms one another, an input shaft, and an output shaft. A first connection member at which the third clutch is positioned is positioned at an outer periphery side compared to a second connection member connecting a ring gear of the second planetary mechanism and a carrier of the third planetary mechanism. An installation surface to which a third brake braking a rotation of a connection part is addable and which is opposed to an inner periphery surface of the housing is formed at the connection part connecting the third clutch and a ring gear of the third planetary mechanism among the first connection member.Type: ApplicationFiled: September 25, 2014Publication date: March 26, 2015Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Kiyoharu Takagi, Atsuhiro Mase, Hideki Nakamura
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Patent number: 7673652Abstract: There is provided a circuit configuration which does not require an additional fail-safe mechanism caused by the addition of a changeover valve in a hydraulic pressure control device for an automatic transmission having a function to directly supply a line pressure and hold (lock) an engaging pressure by combinations of electromagnetic valves and changeover valves. A changeover valve 20 is disposed between an output port 12 and a feedback port 13 of a linear solenoid valve 10 of the hydraulic pressure control device for an automatic transmission.Type: GrantFiled: January 27, 2006Date of Patent: March 9, 2010Assignee: Aisin Seiki Kabushiki KaishaInventor: Kiyoharu Takagi
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Patent number: 7513269Abstract: In a hydraulic control system for an automatic transmission, a valve element of an accumulator closes communication between a pressure switch circuit and a detection circuit when a hydraulic pressure applied to the detection circuit is lower than a predetermined hydraulic pressure, and opens communication between the pressure switch circuit and the detection circuit when the applied pressure is higher than or equal to the predetermined hydraulic pressure. A switching element opens communication between one end of the pressure switch circuit and an exhaust circuit when the other end of the pressure switch circuit does not communicate with the detection circuit, and closes communication between the one end and the exhaust circuit when the other end communicates with the detection circuit.Type: GrantFiled: February 14, 2006Date of Patent: April 7, 2009Assignee: Aisin Seiki Kabushiki KaishaInventors: Osamu Sakamoto, Kiyoharu Takagi