Patents by Inventor Norikazu Baba

Norikazu Baba 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).

  • Publication number: 20220371169
    Abstract: A driving tool comprises a displacement allowing mechanism that allows a wheel to be displaced in a radial direction of a rotation shaft. The driving tool further comprises a displacement restricting mechanism that restricts the wheel from being displaced in the radial direction of the rotation shaft. When a driver is to start being moved upwards by an engagement of a first engagement portion with an engaged portion by rotation of the wheel, a displacement restriction state of the wheel caused by the displacement restricting mechanism is released, allowing an entirety of the wheel to be displaceable in the radial direction of the rotation shaft due to the displacement allowing mechanism.
    Type: Application
    Filed: April 21, 2022
    Publication date: November 24, 2022
    Applicant: MAKITA CORPORATION
    Inventors: Shun KURIKI, Norikazu BABA
  • Publication number: 20220241948
    Abstract: A driving tool includes a driver for driving a driving material and an elastic material for biasing the driver downward. The driving tool includes a lifter that is rotated by an electric motor. The lifter moves the driver to a top dead center against a biasing force of the elastic material. The driver includes a plurality of linearly arranged engaging teeth. The lifter includes a plurality of peripherally arranged engaging pins that are engageable with the plurality of engaging teeth. The lifter also includes a wheel that comprises a plurality of peripherally arranged pin supporting holes, each of which holds an end of the corresponding engaging pin. The lifter includes a grease groove and a recessed grease reservoir adjacent to the grease groove. The grease groove is formed in a pin supporting hole, such that the grease groove extends in a pin supporting hole extending direction.
    Type: Application
    Filed: December 22, 2021
    Publication date: August 4, 2022
    Applicant: MAKITA CORPORATION
    Inventor: Norikazu BABA
  • Publication number: 20220097219
    Abstract: In a driving tool, during and/or after a driving operation has been completed, a restriction member is retained in an on-position by a cam. An energizing switch is retained in an on-state by an actuation portion of the restriction member. Because of this configuration, if a trigger is released during and/or after the driving operation has been completed, an electric motor continues to be activated, which causes a driver to return to a standby position.
    Type: Application
    Filed: July 28, 2021
    Publication date: March 31, 2022
    Applicant: MAKITA CORPORATION
    Inventors: Shun KURIKI, Yukiyasu OKOUCHI, Yoshitaka AKIBA, Norikazu BABA
  • Publication number: 20210299836
    Abstract: When a driving piston starts moving upward toward its top dead center or starts moving downward, a second engaging portion engageable with a second rack of a driver is configured to receive a force. The second engaging portion of a second wheel is provided with high strength and wear resistance. Because of this configuration, a cost of production and maintenance replacement parts can be reduced, in comparison with a case where a total mechanism, including first engaging portions of a first wheel, is provided with high strength and wear resistance.
    Type: Application
    Filed: January 28, 2021
    Publication date: September 30, 2021
    Applicant: MAKITA CORPORATION
    Inventor: Norikazu BABA
  • Patent number: 10831098
    Abstract: The present invention provides an imprint apparatus which forms a pattern of an imprint material on a substrate using a mold, the apparatus comprising: a deformation device configured to deform the mold to a convex shape; a detector configured to detect interference fringes for light reflected from the mold and light reflected from the substrate; and a controller configured to control the deformation device to deform the mold to the convex shape, and control a pressing process so that a contact area between the mold and the imprint material on the substrate gradually increases, wherein the controller, in the pressing process, estimates an error for a pressing direction between the mold and the imprint material based on the interference fringes detected by the detector, and corrects the pressing direction so that the error is reduced.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: November 10, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Norikazu Baba
  • Patent number: 10672673
    Abstract: There is provided a method of performing an analysis of a defect in a pattern of an imprint material on a substrate that has undergone an imprint process of transferring a pattern of a mold onto the substrate. The method includes obtaining a defect distribution of the pattern on the substrate, obtaining map information indicating an arrangement of the imprint material on the substrate, and determining a type of a defect based on a relationship between a position of the defect in the defect distribution and a position of a gap in the imprint material generated in a process of spreading the imprint material by the imprint process, wherein the position of the gap is predicted based on the map information.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: June 2, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Norikazu Baba, Kiyohito Yamamoto
  • Patent number: 10442066
    Abstract: In order to provide a driver for reducing reaction generated to a driver main body, the driver 1 includes a nose portion 3 provided in a housing 2 and extending in a longitudinal direction, the nose portion being configured to allow a fastener to pass therethrough, a plunger 7 configured to move in an impact direction parallel to the longitudinal direction to impact the fastener through the nose portion, a weight 8, and a coil spring 9 configured to be compressed by a motor 5 in the longitudinal direction. a release of the compression causing the plunger 7 to move in the impact direction, while causing the weight 8 to move in a counter-impact direction which is away from the plunger 7. The coil spring 9 is provided between the plunger 7 and the weight 8. The coil spring has one end portion urging the plunger 7, and another end portion urging the weight 8.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: October 15, 2019
    Assignee: Koki Holdings Co., Ltd.
    Inventors: Tomomasa Nishikawa, Yoshiichi Komazaki, Tetsuhiro Harada, Norikazu Baba
  • Publication number: 20180364565
    Abstract: The present invention provides an imprint apparatus which forms a pattern of an imprint material on a substrate using a mold, the apparatus comprising: a deformation device configured to deform the mold to a convex shape; a detector configured to detect interference fringes for light reflected from the mold and light reflected from the substrate; and a controller configured to control the deformation device to deform the mold to the convex shape, and control a pressing process so that a contact area between the mold and the imprint material on the substrate gradually increases, wherein the controller, in the pressing process, estimates an error for a pressing direction between the mold and the imprint material based on the interference fringes detected by the detector, and corrects the pressing direction so that the error is reduced.
    Type: Application
    Filed: June 11, 2018
    Publication date: December 20, 2018
    Inventor: Norikazu Baba
  • Publication number: 20170297187
    Abstract: In order to provide a driver for reducing reaction generated to a driver main body, the driver 1 includes a nose portion 3 provided in a housing 2 and extending in a longitudinal direction, the nose portion being configured to allow a fastener to pass therethrough, a plunger 7 configured to move in an impact direction parallel to the longitudinal direction to impact the fastener through the nose portion, a weight 8, and a coil spring 9 configured to be compressed by a motor 5 in the longitudinal direction. a release of the compression causing the plunger 7 to move in the impact direction, while causing the weight 8 to move in a counter-impact direction which is away from the plunger 7. The coil spring 9 is provided between the plunger 7 and the weight 8. The coil spring has one end portion urging the plunger 7, and another end portion urging the weight 8.
    Type: Application
    Filed: August 21, 2015
    Publication date: October 19, 2017
    Inventors: Tomomasa NISHIKAWA, Yoshiichi KOMAZAKI, Tetsuhiro HARADA, Norikazu BABA
  • Publication number: 20170263510
    Abstract: There is provided a method of performing an analysis of a defect in a pattern of an imprint material on a substrate that has undergone an imprint process of transferring a pattern of a mold onto the substrate. The method includes obtaining a defect distribution of the pattern on the substrate, obtaining map information indicating an arrangement of the imprint material on the substrate, and determining a type of a defect based on a relationship between a position of the defect in the defect distribution and a position of a gap in the imprint material generated in a process of spreading the imprint material by the imprint process, wherein the position of the gap is predicted based on the map information.
    Type: Application
    Filed: March 7, 2017
    Publication date: September 14, 2017
    Inventors: Norikazu Baba, Kiyohito Yamamoto
  • Publication number: 20160354969
    Abstract: An imprint apparatus for forming a pattern of an imprint material on a substrate using a mold, includes a driving unit configured to adjust a distance and a relative tilt between the mold and the substrate, an image capturing unit configured to capture a plurality of times an interference fringe formed by illuminating the substrate via the mold in a process of enlarging a contact area between the mold and the imprint material by reducing the distance between the mold and the substrate by the driving unit, and a control unit configured to control the driving unit so as to correct the relative tilt between the mold and the substrate a plurality of times in the process based on images captured by the image capturing unit a plurality of times.
    Type: Application
    Filed: June 1, 2016
    Publication date: December 8, 2016
    Inventors: Norikazu Baba, Youzou Fukagawa
  • Patent number: 9372409
    Abstract: An exposure apparatus advantageous for reducing the driving time of a stage is provided. In the apparatus, an input of an arrangement of exposure shots and an exposure order are received. An input of an upper limit acceleration value and an upper limit velocity value of the stage are received. A target locus of the stage is created using constrained-quadratic-linear programming such that the driving time of the stage from the end of an exposure to the start of the next exposure is within an acceptable value range, based on the input arrangement of exposure shots and exposure order, and the input upper limit acceleration value and upper limit velocity value. A driving unit that drives the stage is controlled based on the created target locus.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: June 21, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Norikazu Baba
  • Publication number: 20150331327
    Abstract: An exposure apparatus advantageous for reducing the driving time of a stage is provided. In the apparatus, an input of an arrangement of exposure shots and an exposure order are received. An input of an upper limit acceleration value and an upper limit velocity value of the stage are received. A target locus of the stage is created using constrained-quadratic-linear programming such that the driving time of the stage from the end of an exposure to the start of the next exposure is within an acceptable value range, based on the input arrangement of exposure shots and exposure order, and the input upper limit acceleration value and upper limit velocity value. A driving unit that drives the stage is controlled based on the created target locus.
    Type: Application
    Filed: May 5, 2015
    Publication date: November 19, 2015
    Inventor: Norikazu Baba
  • Patent number: 8960516
    Abstract: A fastener driving tool is capable of not only linearly driving but also rotationally fastening a fastener into a workpiece P. The fastener driving tool includes a housing 2, a nose portion 40 formed with an injection passage 40a through which a fastener 41 is driven, a magazine 4 accommodating fasteners 41 and supplying a fastener 41 to the nose portion 40, a push lever 5 movable relative to the housing 2 upon depression against the workpiece P, combustion chamber frames 12, 22 movable in the housing 2 in accordance with the movement of the push lever 5, and first and second cylinders 7, 8 fixed to the housing 2. First and second pistons 71, 81 are movably disposed in the first and second cylinders 7,8, respectively, and a bit 9 extends from the first piston 71. A rod 14 formed with a rack 14A extends from the second piston 72. The rack 14A is engageable with a motion conversion mechanism 6 for converting a linear motion of the rod 14 into rotational motion of the bit 9.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: February 24, 2015
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshimitsu Iijima, Norikazu Baba, Yasuki Ohmori, Shouichi Hirai
  • Patent number: 8490516
    Abstract: A screw driving machine includes a bit that is movable to strike a screw against a workpiece and rotatable to rotate the screw to the workpiece, a combustion-type power mechanism including a spark plug that ignites combustible gas filled in a combustion chamber to apply striking force to cause the bit to strike the screw, a motor that generates a rotative force when supplied with electric force, and a power transmission mechanism that transmits the rotative force generated at the motor to the bit to cause the bit to rotate.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: July 23, 2013
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Norikazu Baba, Yasuki Ohmori, Shouichi Hirai
  • Publication number: 20120181319
    Abstract: A fastener driving tool is capable of not only linearly driving but also rotationally fastening a fastener into a workpiece P. The fastener driving tool includes a housing 2, a nose portion 40 formed with an injection passage 40a through which a fastener 41 is driven, a magazine 4 accommodating fasteners 41 and supplying a fastener 41 to the nose portion 40, a push lever 5 movable relative to the housing 2 upon depression against the workpiece P, combustion chamber frames 12, 22 movable in the housing 2 in accordance with the movement of the push lever 5, and first and second cylinders 7, 8 fixed to the housing 2. First and second pistons 71, 81 are movably disposed in the first and second cylinders 7,8, respectively, and a bit 9 extends from the first piston 71. A rod 14 formed with a rack 14A extends from the second piston 72. The rack 14A is engageable with a motion conversion mechanism 6 for converting a linear motion of the rod 14 into rotational motion of the bit 9.
    Type: Application
    Filed: September 15, 2010
    Publication date: July 19, 2012
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Yoshimitsu Iijima, Norikazu Baba, Yasuki Ohmori, Shouichi Hirai
  • Publication number: 20120152578
    Abstract: A screw driver capable of stably stopping a bit to stabilize fastening depth of a screw. The screw driver includes a rotary portion, a housing, and a clutch mechanism. The rotary portion is rotated by a power source and has a bit engageable with a screw. The rotary portion also has a moving portion holding the bit and movable between a top dead center and a bottom dead center in an axial direction of the rotary portion. The housing rotatably supports the rotary portion. The clutch mechanism includes a first clutch plate unrotatable relative to the housing, and a second clutch plate movable in the axial direction and rotatable integrally with the rotation of the rotary portion. The first and second clutch plates are positioned to be urged by the moving portion and pressed together when the moving portion reaches the bottom dead center.
    Type: Application
    Filed: December 13, 2011
    Publication date: June 21, 2012
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Norikazu Baba, Yoshiichi Komazaki
  • Patent number: 7971767
    Abstract: When a push lever is brought in contact with a member to be driven, a second trigger stopper slides and a first trigger stopper slides via a second spring. After a third trigger stopper turns ON a push switch 18 according to sliding of the first trigger stopper, the first trigger stopper further slides and a projecting portion and a projecting portion of a trigger are disengaged from each other, so that the trigger is made rotatable. A trigger switch is turned ON according to rotation of the trigger.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: July 5, 2011
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Yoshiichi Komazaki, Norikazu Baba
  • Publication number: 20110073336
    Abstract: A screw driving machine includes a bit that is movable to strike a screw against a workpiece and rotatable to rotate the screw to the workpiece, a combustion-type power mechanism including a spark plug that ignites combustible gas filled in a combustion chamber to apply striking force to cause the bit to strike the screw, a motor that generates a rotative force when supplied with electric force, and a power transmission mechanism that transmits the rotative force generated at the motor to the bit to cause the bit to rotate.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 31, 2011
    Applicant: Hitachi Koki Co., Ltd.
    Inventors: Norikazu Baba, Yasuki Ohmori, Shouichi Hirai
  • Publication number: 20090206120
    Abstract: When a push lever is brought in contact with a member to be driven, a second trigger stopper slides and a first trigger stopper slides via a second spring. After a third trigger stopper turns ON a push switch 18 according to sliding of the first trigger stopper, the first trigger stopper further slides and a projecting portion and a projecting portion of a trigger are disengaged from each other, so that the trigger is made rotatable. A trigger switch is turned ON according to rotation of the trigger.
    Type: Application
    Filed: January 30, 2009
    Publication date: August 20, 2009
    Inventors: Yoshiichi KOMAZAKI, Norikazu Baba