Patents by Inventor Masayuki Kawamura

Masayuki Kawamura 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).

  • Patent number: 9287667
    Abstract: The present invention concerns a shield shell (70) to be connected to a case made of metal and including a shell main body (71) with a case connecting portion (74) to be connected to the case, a single collective shield connecting portion (72) provided on the shell main body (71) and formed into an elliptical tubular shape, and a plurality of individual-core shield connecting portions (77) provided on the shell main body (71) and formed into a cylindrical shape. The present invention may also concern a shield connector (10) including the shield shell (70), a housing (40) to be held onto the shield shell (70), wires with terminal fittings (20) inserted through the interior of the housing (40), and a single braided wire (90) connected to the single collective shield connecting portion (72) of the shield shell (70).
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: March 15, 2016
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Masayuki Kawamura
  • Publication number: 20150318654
    Abstract: An object of the present invention is to provide a technology capable of inhibiting localized thinness in a coating thickness of a sheath formed on a wire with terminal. A method of manufacturing a wire with terminal includes: a) a step of crimping a core wire crimping portion of a terminal onto an exposed core wire extending from an insulating sheathing member at an end portion of a wire; b) a step of crimping a sheath crimping portion of the terminal onto the insulating sheathing member; and c) a step of designating at least one of a first trough-shaped combination portion, which links a terminal connection portion of the terminal and the core wire crimping portion, and a second trough-shaped combination portion, which links the core wire crimping portion and the sheath crimping portion, as a target combination portion and deforming circumference direction end portions of the target combination portion inward.
    Type: Application
    Filed: July 22, 2013
    Publication date: November 5, 2015
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Masayuki KAWAMURA, Toshiyuki IHARA
  • Publication number: 20140367157
    Abstract: The present invention concerns a shield shell (70) to be connected to a case made of metal and including a shell main body (71) with a case connecting portion (74) to be connected to the case, a single collective shield connecting portion (72) provided on the shell main body (71) and formed into an elliptical tubular shape, and a plurality of individual-core shield connecting portions (77) provided on the shell main body (71) and formed into a cylindrical shape. The present invention may also concern a shield connector (10) including the shield shell (70), a housing (40) to be held onto the shield shell (70), wires with terminal fittings (20) inserted through the interior of the housing (40), and a single braided wire (90) connected to the single collective shield connecting portion (72) of the shield shell (70).
    Type: Application
    Filed: March 1, 2012
    Publication date: December 18, 2014
    Inventor: Masayuki Kawamura
  • Patent number: 8907762
    Abstract: An electronic key system that performs ID verification communication to verify an ID of an electronic key. The ID verification communication is started by transmission of a wireless signal from a vehicle and performed between the vehicle and the electronic key. The electronic key system determines the location of the electronic key in accordance with the received signal strength of a radio wave used for the ID verification communication. A signal strength measurement circuit measures a first signal strength, which is the received signal strength when a signal from the electronic key is received, and a second signal strength, which is the received signal strength of the radio wave during a vacant time when the electronic key is performing the ID verification communication. A control unit controls operation of the electronic key in accordance with a measurement result of the first and second signal strengths.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: December 9, 2014
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventor: Masayuki Kawamura
  • Publication number: 20140311799
    Abstract: The present invention aims to maximally reduce a projecting width of a projecting part formed on a terminal when the terminal is crimped to an exposed core part of an end part of a wire. To achieve this aim, a method for producing a terminal-equipped wire in which a crimping portion of a terminal is crimped to an exposed core part of an end part of a wire includes a) a step of arranging the exposed core part in the crimping portion, b) a step of sandwiching a part of the crimping portion between a lower die surface of a lower die and an upper die surface of an upper die and crimping the part of the crimping portion to the exposed core part, and c) a step of pressing an end part of the crimping portion protruding from the upper die surface from above.
    Type: Application
    Filed: February 7, 2012
    Publication date: October 23, 2014
    Applicant: Sumitomo Wiring Systems, Ltd
    Inventors: Masayuki Kawamura, Masahiro Imai, Naoyuki Ueda, Tomohiro Shibata
  • Patent number: 8579655
    Abstract: A device connector (10) includes a service cover (30) to close a service hole (22) on a case (20). A case-side connector (60) is arranged in the case (20) and mounted in a mounting recess (42) in a terminal block (40). A cover-side connector (50) is provided integrally to the service cover (30) and is connected to the case-side connector (60) in a waiting state to form an interlock circuit when the service cover (30) is mounted on the case (20). Flexible pieces (65) hold the case-side connector (60) with a clearance (CL) between the case-side connector (60) and the inner wall of the mounting recess (42) when the case-side connector (60 is in the waiting state. On the other hand, the flexible pieces (65) bias the case-side connector (60) to return the case-side connector (60) to the waiting state when the clearance (CL) changes.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: November 12, 2013
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Masayuki Kawamura
  • Patent number: 8562381
    Abstract: A connector (10) having a plat-shaped terminal fitting (40) connected to a plate-shaped conductor (T) extended from equipment by tightening a bolt with the conductor (10) being overlapped on the terminal fitting (40) and a connector housing (11) holding the terminal fitting (40). A metal nut (45) into which a bolt (V1) is screwed is joined with the terminal fitting (40). The connector housing (11) has a supporting part (25) supporting both side edges of the terminal fitting (40) in a width direction thereof.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: October 22, 2013
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Masayuki Kawamura
  • Patent number: 8562377
    Abstract: A shield connector (10) is mounted in a metal case (C) that contains a device to be mounted in a vehicle. The shield connector (10) has a housing (30) in which terminal fittings (20) connected to ends of wires (W) are accommodated and from which the wires (W) are pulled out. Rubber plugs (70) are provided for sealing between the inner peripheries of cavities (31) in the housing (30) and the outer peripheries of the wires (W). A shield shell (50) covers the housing (30) and is connected electrically to the case (C) and also to a shield conductor (60) through which the wires (W) are inserted. A second rubber ring is provided between the housing (30) and the shield shell (50).
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: October 22, 2013
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Masayuki Kawamura
  • Publication number: 20120282789
    Abstract: A device connector (10) includes a service cover (30) to close a service hole (22) on a case (20). A case-side connector (60) is arranged in the case (20) and mounted in a mounting recess (42) in a terminal block (40). A cover-side connector (50) is provided integrally to the service cover (30) and is connected to the case-side connector (60) in a waiting state to form an interlock circuit when the service cover (30) is mounted on the case (20). Flexible pieces (65) hold the case-side connector (60) with a clearance (CL) between the case-side connector (60) and the inner wall of the mounting recess (42) when the case-side connector (60 is in the waiting state. On the other hand, the flexible pieces (65) bias the case-side connector (60) to return the case-side connector (60) to the waiting state when the clearance (CL) changes.
    Type: Application
    Filed: April 18, 2012
    Publication date: November 8, 2012
    Applicant: Sumitomo Wiring Systems, Ltd.
    Inventor: Masayuki Kawamura
  • Publication number: 20120270444
    Abstract: A shield connector (10) is mounted in a metal case (C) that contains a device to be mounted in a vehicle. The shield connector (10) has a housing (30) in which terminal fittings (20) connected to ends of wires (W) are accommodated and from which the wires (W) are pulled out. Rubber plugs (70) are provided for sealing between the inner peripheries of cavities (31) in the housing (30) and the outer peripheries of the wires (W). A shield shell (50) covers the housing (30) and is connected electrically to the case (C) and also to a shield conductor (60) through which the wires (W) are inserted. A second rubber ring is provided between the housing (30) and the shield shell (50).
    Type: Application
    Filed: April 10, 2012
    Publication date: October 25, 2012
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Masayuki Kawamura
  • Publication number: 20120154114
    Abstract: An electronic key system that performs ID verification communication to verify an ID of an electronic key. The ID verification communication is started by transmission of a wireless signal from a vehicle and performed between the vehicle and the electronic key. The electronic key system determines the location of the electronic key in accordance with the received signal strength of a radio wave used for the ID verification communication. A signal strength measurement circuit measures a first signal strength, which is the received signal strength when a signal from the electronic key is received, and a second signal strength, which is the received signal strength of the radio wave during a vacant time when the electronic key is performing the ID verification communication. A control unit controls operation of the electronic key in accordance with a measurement result of the first and second signal strengths.
    Type: Application
    Filed: December 9, 2011
    Publication date: June 21, 2012
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventor: Masayuki KAWAMURA
  • Publication number: 20120142214
    Abstract: A connector (10) having a plat-shaped terminal fitting (40) connected to a plate-shaped conductor (T) extended from equipment by tightening a bolt with the conductor (10) being overlapped on the terminal fitting (40) and a connector housing (11) holding the terminal fitting (40). A metal nut (45) into which a bolt (V1) is screwed is joined with the terminal fitting (40). The connector housing (11) has a supporting part (25) supporting both side edges of the terminal fitting (40) in a width direction thereof.
    Type: Application
    Filed: September 26, 2011
    Publication date: June 7, 2012
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Masayuki Kawamura
  • Patent number: 7959469
    Abstract: A connector device (10) has a connector (20) to be mounted on a metal case (11) that accommodates a device therein and is covered by a first shield shell (50) and a second shield shell (60). Connecting portions for connecting the first and second shield shells (50, 60) are provided at least at three positions and these connecting portions are arranged at positions displaced in a connecting direction of the connector (20) and a mating connector (40) and a direction orthogonal to the connecting direction. The connecting positions of the first and second shield shells (50, 60) are well-balanced to provide a good a shielding performance.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: June 14, 2011
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Masayuki Kawamura, Hiroyuki Matsuoka
  • Publication number: 20100216323
    Abstract: A connector device (10) has a connector (20) to be mounted on a metal case (11) that accommodates a device therein and is covered by a first shield shell (50) and a second shield shell (60). Connecting portions for connecting the first and second shield shells (50, 60) are provided at least at three positions and these connecting portions are arranged at positions displaced in a connecting direction of the connector (20) and a mating connector (40) and a direction orthogonal to the connecting direction. The connecting positions of the first and second shield shells (50, 60) are well-balanced to provide a good a shielding performance.
    Type: Application
    Filed: February 4, 2010
    Publication date: August 26, 2010
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Masayuki Kawamura, Hiroyuki Matsuoka
  • Patent number: 7597589
    Abstract: A housing (10) made of synthetic resin, in which plate-like terminals (20) are to be accommodated, is formed with cavities (14), into which the terminals (20) are inserted, and resin locking lances (16) extending along surrounding walls (15) of the cavities (14). An engaging projection (16B) engageable with an engaging hole (22) of the terminal (20) projects from the resin locking lance (16). A clearance CL for permitting displacements of the terminal (20) is defined between a facing wall (15L) of the surrounding wall (15) of the cavity (14) facing the resin locking lance (16) and a main body (16A) of the resin locking lance (16) excluding the engaging projection (16B). A projecting distance of the engaging projection (16B) is longer than a difference between the dimension of the clearance and the thickness of the terminal (20).
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: October 6, 2009
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventor: Masayuki Kawamura
  • Publication number: 20090098779
    Abstract: A housing (10) made of synthetic resin, in which plate-like terminals (20) are to be accommodated, is formed with cavities (14), into which the terminals (20) are inserted, and resin locking lances (16) extending along surrounding walls (15) of the cavities (14). An engaging projection (16B) engageable with an engaging hole (22) of the terminal (20) projects from the resin locking lance (16). A clearance CL for permitting displacements of the terminal (20) is defined between a facing wall (15L) of the surrounding wall (15) of the cavity (14) facing the resin locking lance (16) and a main body (16A) of the resin locking lance (16) excluding the engaging projection (16B). A projecting distance of the engaging projection (16B) is longer than a difference between the dimension of the clearance and the thickness of the terminal (20).
    Type: Application
    Filed: October 10, 2008
    Publication date: April 16, 2009
    Applicant: SUMITOMO WIRING SYSTEMS, LTD.
    Inventor: Masayuki Kawamura
  • Patent number: 7505279
    Abstract: A portable device that resists deformation caused by an external force while remaining water resistant. The portable device includes a case, which is made of a flexible material. A battery compartment is formed in the case. A separable portion is arranged in the part of the case corresponding to the battery compartment. Part of the case is bent to open the separable portion and expose the battery compartment from the case.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: March 17, 2009
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Kiyokazu Ohtaki, Seiji Ishigaki, Daisuke Kawamura, Masayuki Kawamura
  • Patent number: 7443287
    Abstract: A portable device for facilitating adjustment of the area in which communication with a controller is enabled. The portable device performs wireless communication with an in-vehicle device, which controls a door lock driver or an engine starter of a vehicle, to remotely control the in-vehicle device. The portable device includes a receiver for receiving a request signal from the in-vehicle device and a control unit for lowering or raising the signal receiving sensitivity of the receiver by predetermined levels to adjust the signal receiving sensitivity.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: October 28, 2008
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Masayuki Kawamura, Yutaka Yoshida, Toshimasa Shibagaki, Masachika Kamiya, Noriyasu Onishi
  • Patent number: 7199710
    Abstract: A controller enabling switching between a smart function and an immobilizer function without using a key cylinder or a slot. The controller includes a verification ECU for transmitting a request signal to a first area and transmitting a transponder drive radio wave to a second area. The portable device transmits an ID code signal in response to the request signal or the transponder drive radio wave. The verification ECU enables the starting of an engine when the ID code transmitted from the portable device matches an ID code of the controller. The verification ECU transmits the drive radio wave when a driver operates a switch in a state in which the starting of the engine is not enabled after the request signal is transmitted.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: April 3, 2007
    Assignees: Kabushiki Kaisha Tokai Rika Denki, Seisakusho & Toyota Jidosha Kabushiki
    Inventors: Takayuki Hiramitsu, Masayuki Kawamura, Kiyokazu Ohtaki, Yoshihito Mizuno, Hiroyasu Hasegawa, Daisuke Kawamura, Toshikazu Mizutani, Tomoyuki Funayama, Teruya Tomiyasu, Koji Iwamoto, Noriyasu Onishi
  • Patent number: 7189117
    Abstract: A shielding shell (18) is integrated into a housing (5) by insert molding, whereas a shell connecting member (22) is mounted on an end of a braided wire (2) of a shielded cable (1) by crimping a crimping ring (23) and can be brought into contact with the inner surface of the shielding shell (18). A cover (17) is mounted on the rear end of the housing (5) to retain the shell connecting member (22). As the crimping ring (23) is crimped, ribs (26) are formed to project and each of them is engageable with any one of turn preventing recesses (35) arranged at a plurality of positions along circumferential direction on the inner circumferential surface of the cover (17). Thus, the shell connecting member (22) is prevented from turning, thereby causing no abrasion at contact portions with the shielding shell (18).
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: March 13, 2007
    Assignee: Sumitomo Wiring Systems, Ltd.
    Inventors: Masayuki Kawamura, Masato Minakata, Atsushi Nishida