Patents by Inventor Naoto Kurumizawa
Naoto Kurumizawa 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: 9533586Abstract: A lock device includes an inlet arranged in a vehicle and having an inlet housing into which a charge cable is insertable. A lock mechanism is capable of locking the charge cable to the inlet. The lock device includes a lock mechanism attachment portion arranged in the inlet housing and enabling attachment of the lock mechanism to the inlet housing. The lock device may be located on an outer surface of the inlet housing and may include a movable lock pin that serves to retain a lock arm of the charge cable and may also be used to retain a lid for closing the inlet. With this system the inlet housing and lock mechanism form a single unit for ease of assembly.Type: GrantFiled: December 5, 2013Date of Patent: January 3, 2017Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Keiji Kahara, Naoto Kurumizawa, Toshiharu Katagiri, Hiroaki Yuasa, Eiji Kitano
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Patent number: 9461407Abstract: A manual unlocking structure arranged in a locking device for locking a power feeding plug to a power receiving connector arranged in a vehicle. The power feeding plug includes a hook. The locking device includes a fastening member capable of fastening the hook to the power receiving connector to lock the power feeding plug to the power receiving connector. The manual unlocking structure includes an operation member that is manually operable to move and separate the fastening member from the hook. A user operates the operation member to manually unlock the power feeding plug. An operation box is arranged in the vehicle and used to manually operate the operation member in the vehicle.Type: GrantFiled: February 25, 2011Date of Patent: October 4, 2016Assignees: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Naoto Kurumizawa, Shinji Ichikawa, Nobuhiro Kibudera
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Patent number: 9281618Abstract: A lock device that locks or unlocks a locking subject includes a lock member moved between a lock position where the lock member locks the locking subject and an unlock position where the lock member unlocks the unlocking subject and a movable transmission member that acts to move the lock member to at least the lock position. A guide mechanism is arranged between the transmission member and the lock member. The guide mechanism includes a sloped lock guide surface. The lock guide surface guides the lock member to the lock position when the transmission member moves in a first direction.Type: GrantFiled: November 21, 2013Date of Patent: March 8, 2016Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Naoto Kurumizawa, Keiji Kahara, Toshiharu Katagiri
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Patent number: 9039437Abstract: A lock device locks a locking subject and includes a lock member moved between a lock position for locking the locking subject and an unlock position for unlocking the locking subject. A first urging member urges the lock member to the lock position. A switching member moves between a first position where the switch member fixes the lock member at the lock position and a second position where the switch member permits the lock member to unlock the locking subject. A first actuator drives the switching member. A position detector is arranged in a power supply line connected to the first actuator. The position detector detects whether the lock member has been moved from the unlock position to the lock position subject and permits the supply of power to the first actuator when detecting the movement.Type: GrantFiled: December 6, 2013Date of Patent: May 26, 2015Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventor: Naoto Kurumizawa
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Patent number: 8845354Abstract: A lock device includes a helical gear driven by a motor. The helical gear is connected to a control shaft by a transmission member. Further, the helical gear is connected to a lid lock bar by a link bar. A coil spring constantly urges the lid lock bar toward a lid lock position.Type: GrantFiled: March 15, 2013Date of Patent: September 30, 2014Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Naoto Kurumizawa, Keiji Kahara, Toshiharu Katagiri
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Patent number: 8816815Abstract: A lock device for a power supplying plug arranged in a vehicle that performs wireless communication with an electronic key. The lock device includes a charge ECU that restricts unauthorized removal of the power supplying plug from an inlet of the vehicle. The vehicle includes antennas that transmit a wireless signal. A first one of the antennas relates to permission for removal of the power supplying plug. A second one of the antennas relates to unlocking or permission for unlocking of a door. A charge ECU stops transmitting the wireless signal from the first antenna when the vehicle is parked and the second antenna transmits the wireless signal. The charge ECU stops the transmission of the wireless signal related to the unlocking of the door when the wireless signal related to removal of the power supplying plug is transmitted.Type: GrantFiled: July 6, 2012Date of Patent: August 26, 2014Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Yuichi Kuramochi, Toshiharu Katagiri, Keiji Kahara, Naoto Kurumizawa, Takahiro Hirashita
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Publication number: 20140170890Abstract: A lock device locks a locking subject and includes a lock member moved between a lock position for locking the locking subject and an unlock position for unlocking the locking subject. A first urging member urges the lock member to the lock position. A switching member moves between a first position where the switch member fixes the lock member at the lock position and a second position where the switch member permits the lock member to unlock the locking subject. A first actuator drives the switching member. A position detector is arranged in a power supply line connected to the first actuator. The position detector detects whether the lock member has been moved from the unlock position to the lock position subject and permits the supply of power to the first actuator when detecting the movement.Type: ApplicationFiled: December 6, 2013Publication date: June 19, 2014Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventor: Naoto KURUMIZAWA
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Publication number: 20140167696Abstract: A lock device includes an inlet arranged in a vehicle and having an inlet housing into which a charge cable is insertable. A lock mechanism is capable of locking the charge cable to the inlet. The lock device includes a lock mechanism attachment portion arranged in the inlet housing and enabling attachment of the lock mechanism to the inlet housing.Type: ApplicationFiled: December 5, 2013Publication date: June 19, 2014Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Keiji KAHARA, Naoto KURUMIZAWA, Toshiharu KATAGIRI, Hiroaki YUASA, Eiji KITANO
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Publication number: 20140169865Abstract: A lock device that locks or unlocks a locking subject includes a lock member moved between a lock position where the lock member locks the locking subject and an unlock position where the lock member unlocks the unlocking subject and a movable transmission member that acts to move the lock member to at least the lock position. A guide mechanism is arranged between the transmission member and the lock member. The guide mechanism includes a sloped lock guide surface. The lock guide surface guides the lock member to the lock position when the transmission member moves in a first direction.Type: ApplicationFiled: November 21, 2013Publication date: June 19, 2014Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Naoto KURUMIZAWA, Keiji KAHARA, Toshiharu KATAGIRI
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Patent number: 8698349Abstract: A locking device for a power feeding plug installed in a vehicle. The vehicle includes an inlet that receives the power feeding plug to charge a battery, which powers a motor. A door antenna transmits a verification signal to an electronic key. The locking device includes a lock bar moved between lock and unlock positions. The lock bar blocks the power feeding plug, which is attached to the inlet, when located at the lock position to prohibit removal of the power feeding plug from the inlet. An inlet antenna transmits the verification signal to an area that includes the inlet. The inlet antenna and door antenna are arranged at different locations. A controller moves the lock bar when verification of the electronic key is accomplished in response to the verification signal from the inlet antenna.Type: GrantFiled: May 13, 2011Date of Patent: April 15, 2014Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Naoto Kurumizawa, Keiji Kahara, Toshiharu Katagiri
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Patent number: 8647135Abstract: A lock device locks a lid, which protects the inlet, and a power supplying plug. The lock device includes a helical gear rotated by the motor. A helical gear is connected to a control shaft. The control shaft is moved to a hook lock bar lock position when the helical gear rotates counterclockwise from the reference position. The helical gear is connected by a transmission member to a lid lock bar. The lid lock bar is constantly urged toward a lid lock position by a coil spring. When the helical gear rotates clockwise from the reference position, the lid lock bar moves to the lid unlock position against the urging force of the coil spring.Type: GrantFiled: March 14, 2013Date of Patent: February 11, 2014Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Naoto Kurumizawa, Keiji Kahara, Toshiharu Katagiri
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Patent number: 8616909Abstract: A lock device includes a helical gear driven and rotated by a motor. The helical gear is connected to a hook stopper control member, which is moved to a projected position when the helical gear is rotated in a clockwise direction, and a lid latch, which is moved to a retracted position when the helical gear rotated in a clockwise direction. A coil spring constantly urges the lid latch to a projected position.Type: GrantFiled: March 13, 2013Date of Patent: December 31, 2013Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Naoto Kurumizawa, Keiji Kahara, Toshiharu Katagiri
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Patent number: 8602804Abstract: A power plug locking device includes a lock unit that restricts movement of an operation arm arranged on a power plug. The lock unit includes a first member, which is moved between a lock position and an unlock position, and a second member, of which movement is restricted in accordance with the movement of the first member. The second member restricts the movement of the operation arm in cooperation with the first member that is moved to the lock position. The first member includes a first contact surface. The second member includes a second contact surface that is able to contact the first member that is moved to the lock position. At least one of the first contact surface and the second contact surface includes a stepped shape.Type: GrantFiled: March 13, 2012Date of Patent: December 10, 2013Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Naoto Kurumizawa, Toshiharu Katagiri
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Publication number: 20130255333Abstract: A lock device locks a lid, which protects the inlet, and a power supplying plug. The lock device includes a helical gear rotated by the motor. A helical gear is connected to a control shaft. The control shaft is moved to a hook lock bar lock position when the helical gear rotates counterclockwise from the reference position. The helical gear is connected by a transmission member to a lid lock bar. The lid lock bar is constantly urged toward a lid lock position by a coil spring. When the helical gear rotates clockwise from the reference position, the lid lock bar moves to the lid unlock position against the urging force of the coil spring.Type: ApplicationFiled: March 14, 2013Publication date: October 3, 2013Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Naoto Kurumizawa, Keiji Kahara, Toshiharu Katagiri
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Patent number: 8547059Abstract: A battery charging connector lock structure that locks a power feeding connector to a receptacle of a power receiving connector. The connector lock structure includes a restriction member that moves between a lock position, in which the restriction member restricts movement of a hook of the power feeding connector to prohibit removal of the power feeding connector from the receptacle, and an unlock position, in which the restriction member releases the hook to permit removal of the power receiving connector. The restriction member includes an extension. A stopper is coupled to the extension of the restriction member and moves the restriction member to the lock position or the unlock position. A drive source moves the stopper to move the restriction member to the lock position. An urging member is arranged on the extension of the restriction member to move the restriction member to the lock position.Type: GrantFiled: February 2, 2011Date of Patent: October 1, 2013Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Naoto Kurumizawa, Makoto Yamamoto
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Power plug locking device having a control unit for moving a lock member between different positions
Patent number: 8523589Abstract: When a power plug locking device moves a plate to a lock position or unlock position, the plate is rotated toward an operational end position with a power plug lock motor while the current of the motor is detected. When the plate comes into contact with a switching piece of a switching mechanism, the switching piece applies a load to the plate. When the current flowing through the motor becomes greater than or equal to a threshold, the supply of power to the power plug lock motor is stopped. Then, switching load of the switching mechanism 48 pushes and moves the disk to an operational end position (lock position or unlock position).Type: GrantFiled: March 20, 2012Date of Patent: September 3, 2013Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Naoto Kurumizawa, Toshiharu Katagiri -
Publication number: 20130047687Abstract: A power supplying plug locking device prevents unauthorized removal of a power supplying plug from an inlet in a state in which an operation arm of the power supplying plug is engaged with a lock member of the inlet. The power supplying plug locking device includes a rotatable key cylinder and a link member that cooperates with the rotation of the key cylinder to switch the lock member between a lock state, which restricts movement of the lock member, and an unlock state, which permits movement of the lock member.Type: ApplicationFiled: July 26, 2012Publication date: February 28, 2013Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Naoto KURUMIZAWA, Takahiro HIRASHITA, Keiji KAHARA, Toshiharu KATAGIRI
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Patent number: 8376768Abstract: A locking device for a power feeding plug that prevents unauthorized removal of the power feeding plug from an inlet. The locking device includes a lock mechanism that locks the power feeding plug to the inlet. The lock mechanism includes an actuator and a lock member pivotable by the actuator between a lock position, at which the lock member locks the power feeding plug to the inlet, and an unlock position.Type: GrantFiled: May 5, 2011Date of Patent: February 19, 2013Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Naoto Kurumizawa, Toshiharu Katagiri
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Publication number: 20130040486Abstract: A manual unlocking structure arranged in a locking device for locking a power feeding plug to a power receiving connector arranged in a vehicle. The power feeding plug includes a hook. The locking device includes a fastening member capable of fastening the hook to the power receiving connector to lock the power feeding plug to the power receiving connector. The manual unlocking structure includes an operation member that is manually operable to move and separate the fastening member from the hook. A user operates the operation member to manually unlock the power feeding plug. An operation box is arranged in the vehicle and used to manually operate the operation member in the vehicle.Type: ApplicationFiled: February 25, 2011Publication date: February 14, 2013Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Naoto Kurumizawa, Shinji Ichikawa, Nobuhiro Kibudera
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Publication number: 20130015951Abstract: A lock device for a power supplying plug arranged in a vehicle that performs wireless communication with an electronic key. The lock device includes a charge ECU that restricts unauthorized removal of the power supplying plug from an inlet of the vehicle. The vehicle includes antennas that transmit a wireless signal. A first one of the antennas relates to permission for removal of the power supplying plug. A second one of the antennas relates to unlocking or permission for unlocking of a door. A charge ECU stops transmitting the wireless signal from the first antenna when the vehicle is parked and the second antenna transmits the wireless signal. The charge ECU stops the transmission of the wireless signal related to the unlocking of the door when the wireless signal related to removal of the power supplying plug is transmitted.Type: ApplicationFiled: July 6, 2012Publication date: January 17, 2013Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Yuichi KURAMOCHI, Toshiharu KATAGIRI, Keiji KAHARA, Naoto KURUMIZAWA, Takahiro HIRASHITA