Patents by Inventor Takuya Kakumae
Takuya Kakumae 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: 11965367Abstract: A motor-vehicle door latch device includes: a main body; a latch that engages with a striker on a vehicle body side when a door is closed, and is capable of moving from an open position to a fully-latched position; a ratchet provided with a pawl that blocks the latch from rotating to an opening direction by respectively engaging with a half-latched engagement portion and a fully-latched engagement portion of the latch; and a third latch lever that engages with a third engagement portion provided on the latch when the latch is in a third latch position between a half-latched position and the open position of the latch so that the third latch lever is capable of blocking the latch from rotating in the opening direction from the third latch position.Type: GrantFiled: June 17, 2021Date of Patent: April 23, 2024Assignee: MITSUI KINZOKU ACT CORPORATIONInventors: Shintaro Okawa, Takuya Kakumae
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Patent number: 11674341Abstract: A vehicle door latch apparatus has a latch that is engaged with a striker; a ratchet member rotatably supported by a ratchet shaft and that has a pawl portion, wherein the pawl portion is movable between a latch engaging position, where the pawl portion can face a full latch engaging portion of the latch, and a latch releasing position, where the pawl portion is not in contact with the full latch engaging portion, wherein release component force is generated in a latch releasing direction when latch return force is applied in a releasing direction at the latch engaging position, and the ratchet member is pushed out from the latch engaging position to the latch releasing position by the release component force; a ratchet restraint that is arranged on a side of the ratchet member and that can be moved about a pin between a block position and a release position.Type: GrantFiled: March 19, 2018Date of Patent: June 13, 2023Assignee: MITSUI KINZOKU ACT CORPORATIONInventors: Katsuyuki Ishiguro, Hirotaka Nishijima, Takuya Kakumae, Shintaro Okawa, Makoto Kaburaki
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Publication number: 20210396054Abstract: A motor-vehicle door latch device includes: a main body; a latch that engages with a striker on a vehicle body side when a door is closed, and is capable of moving from an open position to a fully-latched position; a ratchet provided with a pawl that blocks the latch from rotating to an opening direction by respectively engaging with a half-latched engagement portion and a fully-latched engagement portion of the latch; and a third latch lever that engages with a third engagement portion provided on the latch when the latch is in a third latch position between a half-latched position and the open position of the latch so that the third latch lever is capable of blocking the latch from rotating in the opening direction from the third latch position.Type: ApplicationFiled: June 17, 2021Publication date: December 23, 2021Inventors: Shintaro OKAWA, Takuya KAKUMAE
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Publication number: 20210180372Abstract: A vehicle door latch apparatus has a latch that is engaged with a striker; a ratchet member rotatably supported by a ratchet shaft and that has a pawl portion, wherein the pawl portion is movable between a latch engaging position, where the pawl portion can face a full latch engaging portion of the latch, and a latch releasing position, where the pawl portion is not in contact with the full latch engaging portion, wherein release component force is generated in a latch releasing direction when latch return force is applied in a releasing direction at the latch engaging position, and the ratchet member is pushed out from the latch engaging position to the latch releasing position by the release component force; a ratchet restraint that is arranged on a side of the ratchet member and that can be moved about a pin between a block position and a release position.Type: ApplicationFiled: March 19, 2018Publication date: June 17, 2021Applicant: MITSUI KINZOKU ACT CORPORATIONInventors: Katsuyuki Ishiguro, Hirotaka Nishijima, Takuya Kakumae, Shintaro Okawa, Makoto Kaburaki
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Patent number: 8037639Abstract: In a door opening/closing device having a motor base and a sensor case, a rotation sensor is provided. The rotation sensor includes a magnetic member provided adjacent an end of a rotation shaft and a detecting element that is arranged so as to detect a magnetic flux that is generated from the magnetic member in a direction crossing a magnetic flux that is generated from an electromagnetic clutch arranged around the rotation shaft. The motor base is attached to the sensor case such that the end of the rotation shaft extends outside of the motor base and the rotation sensor is arranged adjacent the end of the rotation shaft.Type: GrantFiled: March 8, 2006Date of Patent: October 18, 2011Assignee: Mitsu Kinzoku Act CorporationInventors: Hirofumi Watanabe, Takuya Kakumae, Kazuhito Yokomori, Nobuo Sugawara
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Patent number: 8007027Abstract: A door operating apparatus includes a motor bracket that covers a driving shaft of a driving motor; an output shaft that is disposed from the motor bracket toward the supporting bracket so as to be orthogonal to an extending direction of the driving shaft; a first rotational element that is linked with the driving shaft, and disposed on the output shaft; a second rotational element that is linked with a door operating mechanism, and disposed between the first rotational element and the supporting bracket on the output shaft; and a clutch unit including a clutch driving section that supports a rotation of the output shaft. When the first rotational element and the second rotational element are engaged by driving of the clutch driving section, the door operating mechanism is actuated by the driving force.Type: GrantFiled: February 19, 2009Date of Patent: August 30, 2011Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Hirofumi Watanabe, Takuya Kakumae
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Patent number: 7845706Abstract: A case is mounted to one of a motor vehicle and a pivotal door and has therein a gear receiving space. An electric motor is mounted to the case. A speed reduction mechanism is installed in the gear receiving space of the case and driven by the electric motor. An output gear is rotatably received in the gear receiving space of the case and driven by the speed reduction mechanism. An output arm is placed above the case and connected to the output gear through an output shaft that passes through an upper wall portion of the case. A connecting rod has one end pivotally connected to the output arm and the other end pivotally connected to the other of the motor vehicle and the pivotal door. The connecting rod is arranged beside the case in a manner to avoid overlapping thereof with the case in a direction that is perpendicular to a direction in which the connecting rod is moved by the output arm.Type: GrantFiled: August 14, 2007Date of Patent: December 7, 2010Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Hirofumi Watanabe, Takuya Kakumae
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Publication number: 20090151260Abstract: A door operating apparatus includes a motor bracket that covers a driving shaft of a driving motor; an output shaft that is disposed from the motor bracket toward the supporting bracket so as to be orthogonal to an extending direction of the driving shaft; a first rotational element that is linked with the driving shaft, and disposed on the output shaft; a second rotational element that is linked with a door operating mechanism, and disposed between the first rotational element and the supporting bracket on the output shaft; and a clutch unit including a clutch driving section that supports a rotation of the output shaft. When the first rotational element and the second rotational element are engaged by driving of the clutch driving section, the door operating mechanism is actuated by the driving force.Type: ApplicationFiled: February 19, 2009Publication date: June 18, 2009Applicant: MITSUIMINING & SMELTING CO., LTD.Inventors: Hirofumi Watanabe, Takuya Kakumae
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Patent number: 7429073Abstract: A door operating apparatus includes a motor bracket that covers a driving shaft of a driving motor; an output shaft that is disposed from the motor bracket toward the supporting bracket so as to be orthogonal to an extending direction of the driving shaft; a first rotational element that is linked with the driving shaft, and disposed on the output shaft; a second rotational element that is linked with a door operating mechanism, and disposed between the first rotational element and the supporting bracket on the output shaft; and a clutch unit including a clutch driving section that supports a rotation of the output shaft. When the first rotational element and the second rotational element are engaged by driving of the clutch driving section, the door operating mechanism is actuated by the driving force.Type: GrantFiled: May 3, 2005Date of Patent: September 30, 2008Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Hirofumi Watanabe, Takuya Kakumae
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Publication number: 20080168714Abstract: A case is mounted to one of a motor vehicle and a pivotal door and has therein a gear receiving space. An electric motor is mounted to the case. A speed reduction mechanism is installed in the gear receiving space of the case and driven by the electric motor. An output gear is rotatably received in the gear receiving space of the case and driven by the speed reduction mechanism. An output arm is placed above the case and connected to the output gear through an output shaft that passes through an upper wall portion of the case. A connecting rod has one end pivotally connected to the output arm and the other end pivotally connected to the other of the motor vehicle and the pivotal door. The connecting rod is arranged beside the case in a manner to avoid overlapping thereof with the case in a direction that is perpendicular to a direction in which the connecting rod is moved by the output arm.Type: ApplicationFiled: August 14, 2007Publication date: July 17, 2008Inventors: Hirofumi Watanabe, Takuya Kakumae
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Publication number: 20070294948Abstract: A door operating apparatus includes a motor bracket that covers a driving shaft of a driving motor; an output shaft that is disposed from the motor bracket toward the supporting bracket so as to be orthogonal to an extending direction of the driving shaft; a first rotational element that is linked with the driving shaft, and disposed on the output shaft; a second rotational element that is linked with a door operating mechanism, and disposed between the first rotational element and the supporting bracket on the output shaft; and a clutch unit including a clutch driving section that supports a rotation of the output shaft. When the first rotational element and the second rotational element are engaged by driving of the clutch driving section, the door operating mechanism is actuated by the driving force.Type: ApplicationFiled: July 25, 2007Publication date: December 27, 2007Inventors: Hirofumi Watanabe, Takuya Kakumae
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Publication number: 20070084122Abstract: In a door opening/closing device, a rotation sensor is provided at an end of a rotation shaft that is arranged around a clutch. The rotation sensor includes a detecting element that is arranged so as to detect magnetic flux that is generated from the magnetic member in a direction crossing magnetic flux that is generated from an electromagnetic clutch. The rotation sensor is arranged such that an end of the rotation shaft extends outside of a motor base.Type: ApplicationFiled: March 8, 2006Publication date: April 19, 2007Inventors: Hirofumi Watanabe, Takuya Kakumae, Kazuhito Yokomori, Nobuo Sugawara
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Publication number: 20060261631Abstract: A door operating apparatus includes a motor bracket that covers a driving shaft of a driving motor; an output shaft that is disposed from the motor bracket toward the supporting bracket so as to be orthogonal to an extending direction of the driving shaft; a first rotational element that is linked with the driving shaft, and disposed on the output shaft; a second rotational element that is linked with a door operating mechanism, and disposed between the first rotational element and the supporting bracket on the output shaft; and a clutch unit including a clutch driving section that supports a rotation of the output shaft. When the first rotational element and the second rotational element are engaged by driving of the clutch driving section, the door operating mechanism is actuated by the driving force.Type: ApplicationFiled: May 3, 2005Publication date: November 23, 2006Inventors: Hirofumi Watanabe, Takuya Kakumae
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Patent number: 7063373Abstract: The clutch includes a drive disk, a follower disk and a brake disk. When current flows, the follower disk is connected with the drive disk to transmit a power from a driving unit to a door-opening/closing mechanism. When no current flows, the follower disk is separated from the drive disk to cut off the power transmission from the driving unit to the door-opening/closing mechanism. In a state that the drive disk and the follower disk are separated from each other, the brake disk is connected to the follower disk to brake the door-opening/closing mechanism in the opening direction of the door, and to allow the door-opening/closing mechanism to move in the closing direction of the door.Type: GrantFiled: September 4, 2003Date of Patent: June 20, 2006Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Koji Chikata, Takuya Kakumae
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Publication number: 20050082870Abstract: The clutch includes a drive disk, a follower disk and a brake disk. When current flows, the follower disk is connected with the drive disk to transmit a power from a driving unit to a door-opening/closing mechanism. When no current flows, the follower disk is separated from the drive disk to cut off the power transmission from the driving unit to the door-opening/closing mechanism. In a state that the drive disk and the follower disk are separated from each other, the brake disk is connected to the follower disk to brake the door-opening/closing mechanism in the opening direction of the door, and to allow the door-opening/closing mechanism to move in the closing direction of the door.Type: ApplicationFiled: October 20, 2004Publication date: April 21, 2005Inventors: Koji Chikata, Takuya Kakumae
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Publication number: 20040046418Abstract: The clutch includes a drive disk, a follower disk and a brake disk. When current flows, the follower disk is connected with the drive disk to transmit a power from a driving unit to a door-opening/closing mechanism. When no current flows, the follower disk is separated from the drive disk to cut off the power transmission from the driving unit to the door-opening/closing mechanism. In a state that the drive disk and the follower disk are separated from each other, the brake disk is connected to the follower disk to brake the door-opening/closing mechanism in the opening direction of the door, and to allow the door-opening/closing mechanism to move in the closing direction of the door.Type: ApplicationFiled: September 4, 2003Publication date: March 11, 2004Applicant: MITSUI MINING & SMELTING CO., LTD.Inventors: Koji Chikata, Takuya Kakumae