Patents by Inventor Tomoyuki Murakami
Tomoyuki Murakami 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: 11618278Abstract: A method for manufacturing a vehicle wheel of the present invention includes a step of performing an edge treatment including deburring of a spoke edge generated by lathe processing. For the edge treatment, a cutting tool as hale type tool for non-rotational processing is used, and the cutting tool is provided with a processing blade having a recessed blade edge having an R shape or polygonal C shape protruding from an outer peripheral surface on a side of a tip end of the rod-shaped cutting tool connected to a rod-shaped shank portion. A processing machine capable of CNC of four or more axes is used. With the cutting tool standing upright against a disc surface, the blade edge of the processing blade is applied to the spoke edge, and the cutting tool is continuously moved relative to the spoke edge along a ridgeline of the spoke edge for scraping.Type: GrantFiled: December 1, 2020Date of Patent: April 4, 2023Assignee: RAYS ENGINEERING CO., LTDInventors: Shujiro Inatani, Kazunori Ito, Tsutomu Hiromasa, Tomoyuki Murakami
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Publication number: 20230068899Abstract: An optical actuator is configured to include: a movable part on which a lens part is mountable, the movable part being configured to move by driving of a driving part; a fixing part accommodating the movable part; and a first shaft and a second shaft that are spaced apart from each other in a width direction of the movable part, and are fixed to the fixing part, in which the movable part is configured to slide on the first shaft and the second shaft while making contact with the first shaft at two places in an axial direction and with the second shaft at one place in the axial direction. Thus, the optical actuator capable of stably supporting the movable part with respect to the fixing part is provided.Type: ApplicationFiled: August 25, 2022Publication date: March 2, 2023Applicant: Mitsumi Electric Co., Ltd.Inventors: Atsushi KIKUCHI, Yukihiro TAKIMOTO, Tomoyuki MURAKAMI
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Patent number: 11520118Abstract: This lens drive device 1 comprises: an autofocus drive unit for performing autofocus using a driving force of a voice coil motor configured from a first coil part 112 and a magnet part 122; and a shake correction drive unit for performing shake correction using a driving force of a voice coil motor configured from a second coil part 231 and the magnet part 122. The magnet part 122 includes first magnets 122A, 122C disposed at two mutually facing sides among the four sides of a substantially rectangular-shaped lens drive device in a plan view, and a second magnet 122B disposed at another side. The side the second magnet 122B faces is designated a no-magnet disposed section R where no magnet is disposed.Type: GrantFiled: June 14, 2017Date of Patent: December 6, 2022Assignee: MITSUMI ELECTRIC CO., LTD.Inventors: Shinsuke Konuma, Tomoyuki Murakami, Shota Kudo, Yohei Enta
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Patent number: 11209661Abstract: This lens driving device comprises an autofocus (AF) driving unit and a shake correction driving unit, wherein a shake correction support member has a pair of power supply suspension wires and a pair of signal suspension wires. While an AF movable unit includes a position detecting magnet, an AF fixation unit includes an AF power source line, a signal line, a coil power source line, and an AF control unit. The AF control unit includes a hole element, and a coil control unit which controls current passing through an AF coil part, and an AF circuit board on which the hole element and the coil control unit are mounted. As a result of contact between a lens holder and a base which has rigidity higher than that of a coil substrate, movement of the AF movable unit toward a formed image in the optical axis is restricted.Type: GrantFiled: November 29, 2016Date of Patent: December 28, 2021Assignee: MITSUMI ELECTRIC CO., LTD.Inventors: Tomoyuki Murakami, Keiichi Sato
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Publication number: 20210260916Abstract: A method for manufacturing a vehicle wheel of the present invention includes a step of performing an edge treatment including deburring of a spoke edge generated by lathe processing. For the edge treatment, a cutting tool as hale type tool for non-rotational processing is used, and the cutting tool is provided with a processing blade having a recessed blade edge having an R shape or polygonal C shape protruding from an outer peripheral surface on a side of a tip end of the rod-shaped cutting tool connected to a rod-shaped shank portion. A processing machine capable of CNC of four or more axes is used. With the cutting tool standing upright against a disc surface, the blade edge of the processing blade is applied to the spoke edge, and the cutting tool is continuously moved relative to the spoke edge along a ridgeline of the spoke edge for scraping.Type: ApplicationFiled: December 1, 2020Publication date: August 26, 2021Inventors: Shujiro Inatani, Kazunori Ito, Tsutomu Hiromasa, Tomoyuki Murakami
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Patent number: 11009719Abstract: This lens drive device is provided with an AF drive part and image stabilization drive part using the driving force of a VCM. a pair of power supply suspension wires and a pair of signal suspension wires couple an image stabilization fixed part with an AF fixed part. The AF fixed part includes an AF power supply line, a signal line, a coil power supply line, and an AF control part. The AF control part includes: a Hall element detecting the position of the AF movable part in the optical axis direction; a coil control part controlling the energizing current for an AF coil on the basis of a control signal supplied through the signal suspension wires and the detection results of the Hall element; and an autofocus circuit board whereon the Hall element and the coil control part are mounted.Type: GrantFiled: February 10, 2016Date of Patent: May 18, 2021Assignee: MITSUMI ELECTRIC CO., LTD.Inventor: Tomoyuki Murakami
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Publication number: 20200223615Abstract: A bag-like container includes a bottom sheet including a first paper base layer and a heating element layer configured to generate heat by absorbing electromagnetic waves; and a top sheet bonded to the bottom sheet in such a manner as to be separable from the bottom sheet with a content to be cooked being contained, wherein the top sheet transmits the electromagnetic waves.Type: ApplicationFiled: March 26, 2020Publication date: July 16, 2020Inventors: Saki WATANABE, Tomoyuki MURAKAMI, Shinichirou KANAMORI, Kana HASHIMOTO
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Patent number: 10527818Abstract: Provided is a technology which: has a structure that is advantageous for size reduction and power saving; and, moreover, is useful when automatic focusing using a closed-loop control system. A lens driving device comprising: an autofocus driving unit; a Hall element which separates an autofocus magnet section; a first position detection magnet which is disposed near the Hall element; and a second position detection magnet which has the same configuration as the first position detection magnet and is disposed in a point symmetrical position relating to the first position detection magnet and the optical axis direction.Type: GrantFiled: December 27, 2017Date of Patent: January 7, 2020Assignee: MITSUMI ELECTRIC CO., LTD.Inventors: Tomoyuki Murakami, Ichiro Hayashi, Shota Kudo
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Patent number: 10508611Abstract: The present invention relates to a control device and a control method for an internal combustion engine including a fuel injection valve and an electric fuel pump. In stopping the internal combustion engine, the control device stops driving of the fuel pump and then fuel injection by the fuel injection valve, and increases the total amount of fuel injection by the fuel injection valve after stopping of driving of the fuel pump as the temperature of fuel in stopping the internal combustion engine decreases, thereby reducing a fuel pressure in a stop period. In this manner, fuel leakage from the fuel injection valve in the stop period can be reduced with a simple configuration.Type: GrantFiled: September 16, 2014Date of Patent: December 17, 2019Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yoshitatsu Nakamura, Tomoyuki Murakami
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Publication number: 20190339542Abstract: This lens driving device comprises an autofocus (AF) driving unit and a shake correction driving unit, wherein a shake correction support member has a pair of power supply suspension wires and a pair of signal suspension wires. While an AF movable unit includes a position detecting magnet, an AF fixation unit includes an AF power source line, a signal line, a coil power source line, and an AF control unit. The AF control unit includes a hole element, and a coil control unit which controls current passing through an AF coil part, and an AF circuit board on which the hole element and the coil control unit are mounted. As a result of contact between a lens holder and a base which has rigidity higher than that of a coil substrate, movement of the AF movable unit toward a formed image in the optical axis is restricted.Type: ApplicationFiled: November 29, 2016Publication date: November 7, 2019Applicant: MITSUMI ELECTRIC CO., LTD.Inventors: Tomoyuki MURAKAMI, Keiichi SATO
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Patent number: 10450944Abstract: The present invention relates to a control apparatus and method for an internal combustion engine including two fuel injection valves in the intake port of each cylinder. In the present invention, fuel injection from a first fuel injection valve is activated while fuel injection from a second fuel injection valve is temporarily stopped at the resumption of fuel injection from the deceleration fuel cut-off state in response to a decrease in the engine rotation speed. The amount of minimum fuel injection to each cylinder that ensures the accuracy of fuel measurement can be reduced, and fuel is injected from the first fuel injection valve in an amount equal to or greater than the amount of minimum fuel injection. Thus, fuel injection can be resumed at a lower engine speed than when fuel injection is resumed from the two fuel injection valves.Type: GrantFiled: October 7, 2015Date of Patent: October 22, 2019Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Kousuke Kanda, Yoshitatsu Nakamura, Tomoyuki Murakami
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Patent number: 10401589Abstract: A lens driving device comprising: an autofocus driving unit in which an autofocus movable part is elastically supported by an autofocus fixed part due to an elastic support part; and an auxiliary magnet which, in a reference position of the autofocus movable part, has a movement direction action force of zero relative to the autofocus movable part and which generates the movement direction action force in the opposite direction to a restoring force of the elastic support part when the autofocus movable part has moved.Type: GrantFiled: July 8, 2015Date of Patent: September 3, 2019Assignee: MITSUMI ELECTRIC CO., LTD.Inventor: Tomoyuki Murakami
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Publication number: 20190204532Abstract: This lens drive device 1 comprises: an autofocus drive unit for performing autofocus using a driving force of a voice coil motor configured from a first coil part 112 and a magnet part 122; and a shake correction drive unit for performing shake correction using a driving force of a voice coil motor configured from a second coil part 231 and the magnet part 122. The magnet part 122 includes first magnets 122A, 122C disposed at two mutually facing sides among the four sides of a substantially rectangular-shaped lens drive device in a plan view, and a second magnet 122B disposed at another side. The side the second magnet 122B faces is designated a no-magnet disposed section R where no magnet is disposed.Type: ApplicationFiled: June 14, 2017Publication date: July 4, 2019Applicant: MITSUMI ELECTRIC CO., LTD.Inventors: Shinsuke KONUMA, Tomoyuki MURAKAMI, Shota KUDO, Yohei ENTA
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Patent number: 10222577Abstract: The lens driving device according to the present invention is provided with: an autofocus drive part for moving an autofocus movable part with respect to an autofocus fixed part in an optical axis direction and thereby automatically performing focusing; a shake correction drive part for correcting shake by causing a shake correction movable part to oscillate with respect to a shake correction fixed part in a plane orthogonal to the optical axis direction; and a sub-stopper part for restricting the distance that the autofocus movable part can move toward the image side in the optical axis direction to within an allowable range of displacement of a lens part, the sub-stopper part being interposed between the autofocus movable part and the shake correction fixed part.Type: GrantFiled: December 24, 2015Date of Patent: March 5, 2019Assignee: MITSUMI ELECTRIC CO., LTD.Inventor: Tomoyuki Murakami
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Publication number: 20190049691Abstract: A lens drive device is provided with: an AF drive unit that has an AF coil unit disposed around a lens unit and an AF magnet unit disposed separately in the radial direction with respect to the AF coil unit and automatically carries out focusing; and an OIS drive unit that has an OIS magnet unit disposed in an AF unit that includes a movable AF unit and a fixed AF unit and an OIS coil unit disposed separately in the direction of the optical axis with respect to the OIS magnet unit and carries out shake correction. The AF drive unit has an elastic support unit that connects the movable AF unit with the fixed AF unit. The movable AF unit is supported movably both ways in the direction of the optical axis by an elastic member.Type: ApplicationFiled: October 12, 2018Publication date: February 14, 2019Applicant: MITSUMI ELECTRIC CO., LTD.Inventors: Shota KUDO, Ichiro HAYASHI, Tomoyuki MURAKAMI
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Publication number: 20190041661Abstract: This lens drive device is provided with an AF drive part and image stabilization drive part using the driving force of a VCM. a pair of power supply suspension wires and a pair of signal suspension wires couple an image stabilization fixed part with an AF fixed part. The AF fixed part includes an AF power supply line, a signal line, a coil power supply line, and an AF control part. The AF control part includes: a Hall element detecting the position of the AF movable part in the optical axis direction; a coil control part controlling the energizing current for an AF coil on the basis of a control signal supplied through the signal suspension wires and the detection results of the Hall element; and an autofocus circuit board whereon the Hall element and the coil control part are mounted.Type: ApplicationFiled: February 10, 2016Publication date: February 7, 2019Applicant: MITSUMI ELECTRIC CO., LTD.Inventor: Tomoyuki MURAKAMI
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Patent number: 10126522Abstract: A lens drive device is provided with: an AF drive unit that has an AF coil unit disposed around a lens unit and an AF magnet unit disposed separately in the radial direction with respect to the AF coil unit and automatically carries out focusing; and an OIS drive unit that has an OIS magnet unit disposed in an AF unit that includes a movable AF unit and a fixed AF unit and an OIS coil unit disposed separately in the direction of the optical axis with respect to the OIS magnet unit and carries out shake correction. The AF drive unit has an elastic support unit that connects the movable AF unit with the fixed AF unit. The movable AF unit is supported movably both ways in the direction of the optical axis by an elastic member.Type: GrantFiled: April 24, 2015Date of Patent: November 13, 2018Assignee: MITSUMI ELECTRIC CO., LTD.Inventors: Shota Kudo, Ichiro Hayashi, Tomoyuki Murakami
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Publication number: 20180120532Abstract: Provided is a technology which: has a structure that is advantageous for size reduction and power saving; and, moreover, is useful when automatic focusing using a closed-loop control system. A lens driving device comprising: an autofocus driving unit; a Hall element which separates an autofocus magnet section; a first position detection magnet which is disposed near the Hall element; and a second position detection magnet which has the same configuration as the first position detection magnet and is disposed in a point symmetrical position relating to the first position detection magnet and the optical axis direction.Type: ApplicationFiled: December 27, 2017Publication date: May 3, 2018Applicant: MITSUMI ELECTRIC CO., LTD.Inventors: Tomoyuki MURAKAMI, Ichiro HAYASHI, Shota KUDO
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Patent number: 9915802Abstract: Provided is a technology which: has a structure that is advantageous for size reduction and power saving; and, moreover, is useful when automatic focusing using a closed-loop control system. A lens driving device comprising: an autofocus driving unit; a Hall element which separates an autofocus magnet section in the optical axis direction and is disposed in a position corresponding to one opposing corner section of the autofocus magnet section and in a manner such that the detection direction matches the optical axis direction; a first position detection magnet which is disposed near the Hall element and in a manner such that the magnetisation direction matches the optical axis direction; and a second position detection magnet which has the same configuration as the first position detection magnet and is disposed in a point symmetrical position relating to the first position detection magnet and the optical axis direction.Type: GrantFiled: June 18, 2015Date of Patent: March 13, 2018Assignee: MITSUMI ELECTRIC CO., LTD.Inventors: Tomoyuki Murakami, Ichiro Hayashi, Shota Kudo
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Publication number: 20170371127Abstract: The lens driving device according to the present invention is provided with: an autofocus drive part for moving an autofocus movable part with respect to an autofocus fixed part in an optical axis direction and thereby automatically performing focusing; a shake correction drive part for correcting shake by causing a shake correction movable part to oscillate with respect to a shake correction fixed part in a plane orthogonal to the optical axis direction; and a sub-stopper part for restricting the distance that the autofocus movable part can move toward the image side in the optical axis direction to within an allowable range of displacement of a lens part, the sub-stopper part being interposed between the autofocus movable part and the shake correction fixed part.Type: ApplicationFiled: December 24, 2015Publication date: December 28, 2017Applicant: MITSUMI ELECTRIC CO., LTD.Inventor: Tomoyuki MURAKAMI