Patents by Inventor Masahiro Inagaki

Masahiro Inagaki 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: 20190122815
    Abstract: An ignition coil includes a primary coil, a secondary coil, a primary bobbin, a secondary bobbin, a center core, and a mold resin. The center core has a pair of collar portions protruding from a main body of the center core respectively to opposite sides in a protruding direction. The primary bobbin has a collar portion at least partially sandwiched between the collar portions of the center core and the secondary bobbin in a coil axial direction. The collar portion of the primary bobbin includes an overlapping portion that overlaps the collar portions of the center core in the coil axial direction and is bonded to the collar portions. The primary bobbin is formed of a thermoplastic resin and dispersed-phase particles dispersed in the thermoplastic resin. In the overlapping portion of the primary bobbin, there is formed a specific separating layer that separates adjacent layers in the coil axial direction.
    Type: Application
    Filed: October 5, 2018
    Publication date: April 25, 2019
    Inventors: Kengo Osawa, Masahiro Inagaki
  • Publication number: 20180067956
    Abstract: A data recording method includes the steps of: selecting a first file from a plurality of input files and storing the data of the first file into a pack file created based on a file system on a recording medium; generating a management file and storing management information of the first file on the pack file into the management file; and recording both the pack file containing the data of the first file and the management file containing the management information of the first file into the recording medium.
    Type: Application
    Filed: August 19, 2017
    Publication date: March 8, 2018
    Inventor: Masahiro INAGAKI
  • Patent number: 9161134
    Abstract: An acoustic generator according to an aspect of an embodiment includes an exciter, a vibrating body, and a damping member. The exciter receives input of an electric signal and vibrates. The exciter is attached to the vibrating body, and the vibrating body vibrates together with the exciter with vibration of the exciter. The damping member is attached so as to vibrate together with the vibrating body and the exciter and has a non-uniform thickness in a direction orthogonal to a vibration surface of the vibrating body.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: October 13, 2015
    Assignee: KYOCERA CORPORATION
    Inventor: Masahiro Inagaki
  • Patent number: 9024513
    Abstract: A multi-layer piezoelectric element includes a stacked body including piezoelectric layers and internal electrode layers, which are alternately stacked; an external electrode layer attached to a side surface of the stacked body, the external electrode layer being elongated in a stacking direction of the stacked body and electrically connected with ends of the internal electrode layers which are exposed on the side surface; and an external electrode plate bonded to the external electrode layer therealong by an electrically conducting bonding material. The external electrode plate is provided with slits which extend from opposite long sides toward a center thereof in such a manner that tips of the respective slits overlap each other when viewed in the stacking direction of the stacked body, and a portion thereof where the tips of the respective slits overlap each other is provided with a hole extending along an extension direction of the slit.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: May 5, 2015
    Assignee: Kyocera Corporation
    Inventors: Shinsaku Satoi, Masahiro Inagaki, Katsuhiko Hanada
  • Publication number: 20150016640
    Abstract: An acoustic generator according to an aspect of an embodiment includes an exciter, a vibrating body, and a damping member. The exciter receives input of an electric signal and vibrates. The exciter is attached to the vibrating body, and the vibrating body vibrates together with the exciter with vibration of the exciter. The damping member is attached so as to vibrate together with the vibrating body and the exciter and has a non-uniform thickness in a direction orthogonal to a vibration surface of the vibrating body.
    Type: Application
    Filed: September 26, 2013
    Publication date: January 15, 2015
    Applicant: KYOCERA CORPORATION
    Inventor: Masahiro Inagaki
  • Patent number: 8887183
    Abstract: An optical disc device of the present invention comprises an insertion detection optical sensor which detects insertion of an optical disc based on light emitted from a first light emitting element to a first light receiving element being blocked, and an ejection detection optical sensor provided on the downstream side in the carry-in direction to the insertion detection optical sensor to detect ejection of the optical disc based on light emitted from a second light emitting element to a second light receiving element being blocked. The optical disc device is structured such that, in a state that the optical disc is attached onto the turntable, when the light of the first light emitting element is blocked and the light of the second light emitting element is not blocked, the optical disc device recognizes that a lens cleaner is attached onto the turntable as the optical disc, and the optical disc device performs a cleaning operation.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: November 11, 2014
    Assignee: Panasonic Corporation
    Inventors: Asayuki Matsumura, Tomio Yamamoto, Akihiko Nishioka, Masahiro Inagaki
  • Publication number: 20140189717
    Abstract: An optical disc device of the present invention comprises an insertion detection optical sensor which detects insertion of an optical disc based on light emitted from a first light emitting element to a first light receiving element being blocked, and an ejection detection optical sensor provided on the downstream side in the carry-in direction to the insertion detection optical sensor to detect ejection of the optical disc based on light emitted from a second light emitting element to a second light receiving element being blocked. The optical disc device is structured such that, in a state that the optical disc is attached onto the turntable, when the light of the first light emitting element is blocked and the light of the second light emitting element is not blocked, the optical disc device recognizes that a lens cleaner is attached onto the turntable as the optical disc, and the optical disc device performs a cleaning operation.
    Type: Application
    Filed: November 18, 2011
    Publication date: July 3, 2014
    Inventors: Asayuki Matsumura, Tomio Yamamoto, Akihiko Nishioka, Masahiro Inagaki
  • Patent number: 8704430
    Abstract: A piezoceramic multilayer actuator has a first sub-stack (12, 14, 16) with a plurality of piezoceramic layers (22) and at least one internal electrode (24, 26), the piezoceramic layers (22) and the at least one internal electrode (24, 26) being laminated in an alternating manner, a second sub-stack (12, 14, 16) has a plurality of piezoceramic layers (22) and at least one internal electrode (24, 26), the piezoceramic layers (22) and the at least one internal electrode (24, 26) being laminated in an alternating manner, and a connection layer (40) arranged between the first sub-stack (12, 14, 16) and the second sub-stack (12, 14, 16), wherein the connection layer (40) is set up by a multitude of single connection points or connection lines (44) or other connection regions.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: April 22, 2014
    Assignees: Continental Automotive GmbH, Kyocera Corporation
    Inventors: Bernhard Döllgast, Masahiro Inagaki, Harald Johannes Kastl, Atsushi Ochi, Takami Sakamoto, Carsten Schuh
  • Patent number: 8556607
    Abstract: A screw rotor is for use in a screw pump that pumps fluid by rotation of a pair of screw rotors engaged with each other in a rotor housing. The screw rotor includes a multiple-thread portion for pump suction side and a single-thread portion for pump discharge side. The screw rotor is formed so that the tooth profile of the multiple-thread portion is connected to the tooth profile of the single-thread portion through a boundary plane that is perpendicular to the rotation axis of the screw rotor. The first curved portion coincides with the third curved portion in the boundary plane.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: October 15, 2013
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Yuya Izawa, Shinya Yamamoto, Masahiro Inagaki, Makoto Yoshikawa
  • Patent number: 8410663
    Abstract: A piezoelectric actuator unit which undergoes less change in the amount of displacement and shows high durability in continuous operation under a high voltage and a high pressure over a long period of time is provided. The piezoelectric actuator unit including a multi-layer piezoelectric element having piezoelectric layers and metal layers with the piezoelectric layers and the metal layers being stacked one on another, and a case which houses the multi-layer piezoelectric element, wherein at least one of the plurality of metal layers is stress relieving layer which consists of a plurality of partial metal layers that are scattered throughout the entire region between two piezoelectric layers which adjoin the partial metal layers in the direction of stacking, and voids, and a peel-off section is formed at least in a part of the interface between the stress relieving layer and the piezoelectric layer that adjoins therewith.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: April 2, 2013
    Assignees: Kyocera Corporation, Continental Automotive GmbH
    Inventors: Takami Sakamoto, Masahiro Inagaki, Harald-Johannes Kastl, Carsten Schuh, Bernhard Doellgast, Atsushi Ochi
  • Patent number: 8348650
    Abstract: A housing of a Roots pump is configured by joining a lower housing member and an upper housing member that are separable from each other. With the upper and lower housing members joined together, an upper accommodating portion and a lower accommodating portion form a front bearing accommodating portion and a rear bearing accommodating portion, which accommodate whole bearings, respectively. The Roots pump further includes bearing holders attached to the bearings and fixed to the lower housing member so that the bearings are received in the lower accommodating portion in a positioned state.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: January 8, 2013
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Masahiro Inagaki, Shinya Yamamoto, Makoto Yoshikawa, Yuya Izawa
  • Patent number: 8339018
    Abstract: Provided is a highly durable laminated piezoelectric element wherein a stress generated at a portion, i.e., the boundary between an active region and inactive region, is reduced. A method for manufacturing such laminated piezoelectric element is also provided. The laminated piezoelectric element has a laminated structure (15) wherein a plurality of piezoelectric layers (11) and internal electrode layers (13) are alternately laminated. The piezoelectric layer (11) contains a metal element other than those elements constituting piezoelectric ceramic, i.e., the main component of the piezoelectric layer (11), and at a portion (11a) of the piezoelectric layer (11) at the vicinity of an end of the internal electrode layer (13), metal particles having a metal element as a main component exist. The content of the metal at the portion (11a) at the vicinity of the end is higher than the content of a compound of the metal element and a nonmetal element.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: December 25, 2012
    Assignee: KYOCERA Corporation
    Inventors: Masahiro Inagaki, Takeshi Okamura, Tomohiro Kawamoto
  • Patent number: 8339017
    Abstract: To provide a multi-layer piezoelectric element having high strength against breakage, high insulation and excellent displacement performance, and an injection apparatus that incorporates the same. The multi-layer piezoelectric element comprising a stack 4 constituted from a plurality of piezoelectric layers 1 stacked one on another via internal electrode layers 2, wherein at least a part of peripheral areas 31, that are disposed between two piezoelectric layers 1, 1 located adjacently in the stacking direction and are located between an edge 2a of the internal electrode layer 2 and side face 4a of the stack 4, is dispersed areas where a plurality of metallic regions are dispersed via voids 21.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: December 25, 2012
    Assignee: Kyocera Corporation
    Inventors: Junya Shoji, Masahiro Inagaki, Shigenobu Nakamura
  • Publication number: 20120280057
    Abstract: A multi-layer piezoelectric element includes a stacked body including piezoelectric layers and internal electrode layers, which are alternately stacked; an external electrode layer attached to a side surface of the stacked body, the external electrode layer being elongated in a stacking direction of the stacked body and electrically connected with ends of the internal electrode layers which are exposed on the side surface; and an external electrode plate bonded to the external electrode layer therealong by an electrically conducting bonding material. The external electrode plate is provided with slits which extend from opposite long sides toward a center thereof in such a manner that tips of the respective slits overlap each other when viewed in the stacking direction of the stacked body, and a portion thereof where the tips of the respective slits overlap each other is provided with a hole extending along an extension direction of the slit.
    Type: Application
    Filed: October 28, 2010
    Publication date: November 8, 2012
    Applicant: KYOCERA CORPORATION
    Inventors: Shinsaku Satoi, Masahiro Inagaki, Katsuhiko Hanada
  • Patent number: 8215937
    Abstract: A housing (2) of a Roots pump (1) supports a drive shaft (3) and a driven shaft (4) with radial bearings (32, 33) so as to be rotatable. The housing (2) is formed by joining an upper housing member (20) to a lower housing member (10). The lower housing member (10) has lower bearing support portions (13), and the upper housing member (20) has upper bearing support portions (23). Opening edges (13a) of each lower bearing support portion (13) are positioned above the centers (P1) of the bearings (32, 33). An opening width (T1) of each lower bearing support portion (13) is smaller than the diameter (D1) of the bearings (32, 33). This structure suppresses the bearings (32, 33) from being separated from the lower housing member (10) during an assembling operation of the fluid machine.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: July 10, 2012
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Masahiro Inagaki, Shinya Yamamoto, Makoto Yoshikawa, Yuya Izawa
  • Patent number: 8212451
    Abstract: A multi-layer piezoelectric element includes a stack having metal layers and piezoelectric layers stacked one on another, and a pair of external electrodes formed on the side faces of the stack. At least one of the metal layers is a stress relieving layer having partial metal layers scattered between the two piezoelectric layers and voids. Junction sections are formed between the two piezoelectric layers to join and are disposed on both sides of an imaginary straight line drawn to connect the center of width of one of the external electrodes and the center of width of the other of the external electrodes in a plane including the stress relieving perpendicular to the stacking direction.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: July 3, 2012
    Assignees: Kyocera Corporation, Continental Automotive GmbH
    Inventors: Masahiro Inagaki, Takami Sakamoto, Harald-Johannes Kastl, Carsten Schuh, Bernhard Doellgast, Atsushi Ochi
  • Patent number: 8196843
    Abstract: A multi-layer piezoelectric element having higher durability which experience less decrease in the amount of displacement even when operated continuously over a long period of time under a high pressure and a high voltage is provided. The multi-layer piezoelectric element comprises a plurality of piezoelectric layers and a plurality of internal electrode layers, wherein the piezoelectric layers and the internal electrode layers are stacked alternately one on another, and at least one of the plurality of internal electrode layers contains at least one nitride, titanium nitride or zirconium nitride.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: June 12, 2012
    Assignees: Kyocera Corporation, Siemens Aktiengesellschaft
    Inventors: Takami Sakamoto, Masahiro Inagaki, Harald-Johannes Kastl, Carsten Schuh, Bernhard Doellgast, Atsushi Ochi
  • Patent number: 7948150
    Abstract: A piezoceramic multilayer actuator (10) includes a plurality of green layers, wherein the green layers are to be converted to piezoceramic layers (12) with a piezoceramic material in a subsequent step of heating. A security layer material mixture with a second material (32) and particles (30) embedded in the second material (32) is provided, wherein the particles (30) have a third material different from the first material and different from the second material (32). The security layer material mixture is laminated between two piezoceramic layers (12), thereby forming a green stack. The green stack is heated to a sintering temperature, wherein the green layers are converted to the piezoceramic layers (12), and wherein a chemical reaction of the third material degrades the mechanical connection of the piezoceramic layers (12) by the security layer (20).
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: May 24, 2011
    Assignees: Siemens Aktiengesellschaft, Kyocera Corporation
    Inventors: Bernhard Döllgast, Masahiro Inagaki, Harald Johannes Kastl, Atsushi Ochi, Takami Sakamoto, Carsten Schuh
  • Publication number: 20110017177
    Abstract: A piezoactuator of monolithic multilayer design with an overall stack has at least one piezoelectrically active partial stack with piezoceramic layers arranged one above another and electrode layers arranged between these layers, at least one piezoelectrically inactive terminating region arranged above the partial stack, and at least one transition region arranged between the partial stack and the terminating region.
    Type: Application
    Filed: October 23, 2007
    Publication date: January 27, 2011
    Inventors: Masahiro Inagaki, Harald Johannes Kastl, Takami Sakamoto, Carsten Schuh
  • Publication number: 20110020162
    Abstract: A screw rotor is for use in a screw pump that pumps fluid by rotation of a pair of screw rotors engaged with each other in a rotor housing. The screw rotor includes a multiple-thread portion for pump suction side and a single-thread portion for pump discharge side. The screw rotor is formed so that the tooth profile of the multiple-thread portion is connected to the tooth profile of the single-thread portion through a boundary plane that is perpendicular to the rotation axis of the screw rotor. The first curved portion coincides with the third curved portion in the boundary plane.
    Type: Application
    Filed: July 16, 2010
    Publication date: January 27, 2011
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yuya IZAWA, Shinya YAMAMOTO, Masahiro INAGAKI, Makoto YOSHIKAWA