Patents by Inventor Kazuhiro Kouzaki
Kazuhiro Kouzaki 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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Publication number: 20240125731Abstract: A gas sensor (1) including a sensor element (10); a metallic shell (138); a tubular outer surface member (190) attached directly or indirectly to the metallic shell, constitutes an outer surface of the gas sensor, and extends toward a rear end side in relation to the metallic shell; and a tubular protection member (210, 220) which is detachably fixed to a fixation region C1, C2 of an outer circumference of the outer surface member. The protection member includes a first arc portion (212), a second arc portion (222), and a fixation portion (214,224) brought into contact with and is fixed to the fixation region. When the protection member fixed to the outer circumference of the outer surface member by fixing the fixation portion to the fixation region is viewed in the axial O direction, the first arc portion and the second arc portion cover in total at least 90% of the entire circumference of the outer surface of the outer surface member.Type: ApplicationFiled: September 28, 2020Publication date: April 18, 2024Applicant: NGK SPARK PLUG CO., LTD.Inventors: Sunchao LIU, Kazuhiro KOUZAKI, Takehiro OBA, Motohiko NAKAMURA, Kenji MASUDA
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Patent number: 8215153Abstract: A gas sensor including a detection element having a detection portion; a metal shell that surrounds the detection element so as to expose the detection portion to a measured atmosphere; an outer tube that is fixed to the metal shell so as to cover a rear end side of the detection element; and a seal member that is contained inside the outer tube, the seal member having a lead wire insertion hole and a through hole that penetrates in the axial direction; a tubular holding member made of a resin having a lower coefficient of thermal expansion than the seal member, the tubular holding member being held inside the through hole, the tubular holding member having a ventilation hole; and a filter that covers the ventilation hole, the filter being joined to the holding member, the filter blocking water from passing therethrough, and the filter having air permeability.Type: GrantFiled: September 2, 2009Date of Patent: July 10, 2012Assignee: NGK Spark Plug Co., Ltd.Inventors: Yoshiaki Matsubara, Takayoshi Atsumi, Kouji Matsuo, Kazuhiro Kouzaki, Masahiro Asai
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Publication number: 20100050740Abstract: A gas sensor including a detection element having a detection portion; a metal shell that surrounds the detection element so as to expose the detection portion to a measured atmosphere; an outer tube that is fixed to the metal shell so as to cover a rear end side of the detection element; and a seal member that is contained inside the outer tube, the seal member having a lead wire insertion hole and a through hole that penetrates in the axial direction; a tubular holding member made of a resin having a lower coefficient of thermal expansion than the seal member, the tubular holding member being held inside the through hole, the tubular holding member having a ventilation hole; and a filter that covers the ventilation hole, the filter being joined to the holding member, the filter blocking water from passing therethrough, and the filter having air permeability.Type: ApplicationFiled: September 2, 2009Publication date: March 4, 2010Applicant: NGK SPARK PLUG CO., LTD.Inventors: Yoshiaki MATSUBARA, Takayoshi ATSUMI, Kouji MATSUO, Kazuhiro KOUZAKI, Masahiro ASAI
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Patent number: 7506534Abstract: An object is to provide a gas sensor which can suppress positional shift of a to-be-held member such as a gas detection element, as well as a method of manufacturing the gas sensor. A gas sensor (101) includes a gas detection element (111), a metallic shell (131), a plate packing (157), and a first packing (159). A proximal end surface (113t2) of a projection (113) of the gas sensor element (111) and a central inner circumferential surface (135n) of the metallic shell (131) form an acute-angle clearance (120). The first packing (159), which has a wedge-like cross section, is disposed in the clearance (120) such that the first packing (159) is pressed against the proximal end surface (113t2) of the projection (113) of the gas sensor element (111) and the central inner circumferential surface (135n) of the metallic shell (131).Type: GrantFiled: May 18, 2007Date of Patent: March 24, 2009Assignee: NGK Spark Plug Co., Ltd.Inventors: Hisaharu Nishio, Takashi Nakao, Kazuhiro Kouzaki
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Patent number: 7398673Abstract: An object is to provide a gas sensor which can suppress positional shift of a to-be-held member such as a gas detection element, as well as a method of manufacturing the gas sensor. A gas sensor (101) includes a gas detection element (111), a metallic shell (131), a plate packing (157), and a first packing (159). A proximal end surface (113t2) of a projection (113) of the gas sensor element (111) and a central inner circumferential surface (135n) of the metallic shell (131) form an acute-angle clearance (120). The first packing (159), which has a wedge-like cross section, is disposed in the clearance (120) such that the first packing (159) is pressed against the proximal end surface (113t2) of the projection (113) of the gas sensor element (111) and the central inner circumferential surface (135n) of the metallic shell (131).Type: GrantFiled: May 18, 2007Date of Patent: July 15, 2008Assignee: NGK Spark Plug Co., Ltd.Inventors: Hisaharu Nishio, Takashi Nakao, Kazuhiro Kouzaki
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Publication number: 20070227229Abstract: An object is to provide a gas sensor which can suppress positional shift of a to-be-held member such as a gas detection element, as well as a method of manufacturing the gas sensor. A gas sensor (101) includes a gas detection element (111), a metallic shell (131), a plate packing (157), and a first packing (159). A proximal end surface (113t2) of a projection (113) of the gas sensor element (111) and a central inner circumferential surface (135n) of the metallic shell (131) form an acute-angle clearance (120). The first packing (159), which has a wedge-like cross section, is disposed in the clearance (120) such that the first packing (159) is pressed against the proximal end surface (113t2) of the projection (113) of the gas sensor element (111) and the central inner circumferential surface (135n) of the metallic shell (131).Type: ApplicationFiled: May 18, 2007Publication date: October 4, 2007Inventors: Hisaharu Nishio, Takashi Nakao, Kazuhiro Kouzaki
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Publication number: 20070220952Abstract: An object is to provide a gas sensor which can suppress positional shift of a to-be-held member such as a gas detection element, as well as a method of manufacturing the gas sensor. A gas sensor (101) includes a gas detection element (111), a metallic shell (131), a plate packing (157), and a first packing (159). A proximal end surface (113t2) of a projection (113) of the gas sensor element (111) and a central inner circumferential surface (135n) of the metallic shell (131) form an acute-angle clearance (120). The first packing (159), which has a wedge-like cross section, is disposed in the clearance (120) such that the first packing (159) is pressed against the proximal end surface (113t2) of the projection (113) of the gas sensor element (111) and the central inner circumferential surface (135n) of the metallic shell (131).Type: ApplicationFiled: May 18, 2007Publication date: September 27, 2007Inventors: Hisaharu Nishio, Takashi Nakao, Kazuhiro Kouzaki
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Patent number: 7234341Abstract: An object is to provide a gas sensor which can suppress positional shift of a to-be-held member such as a gas detection element, as well as a method of manufacturing the gas sensor. A gas sensor (101) includes a gas detection element (111), a metallic shell (131), a plate packing (157), and a first packing (159). A proximal end surface (113t2) of a projection (113) of the gas sensor element (111) and a central inner circumferential surface (135n) of the metallic shell (131) form an acute-angle clearance (120). The first packing (159), which has a wedge-like cross section, is disposed in the clearance (120) such that the first packing (159) is pressed against the proximal end surface (113t2) of the projection (113) of the gas sensor element (111) and the central inner circumferential surface (135n) of the metallic shell (131).Type: GrantFiled: July 13, 2004Date of Patent: June 26, 2007Assignee: NGK Spark Plug Co., Ltd.Inventors: Hisaharu Nishio, Takashi Nakao, Kazuhiro Kouzaki
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Patent number: 7222516Abstract: The invention presents a gas sensor low in cost and easy to form a terminal member, a gas sensor cap connected to the gas sensor for sending an output signal to an external device, and a gas sensor unit capable of holding a stable electrically connected state between the terminal member of the gas sensor and the gas sensor cap. The gas sensor 100 of the invention includes a gas detecting element 120 and a terminal member 150.Type: GrantFiled: May 31, 2004Date of Patent: May 29, 2007Assignee: NGK Spark Plug Co., Ltd.Inventors: Hisaharu Nishio, Takashi Nakao, Kazuhiro Kouzaki
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Publication number: 20060174690Abstract: An object is to provide a gas sensor which can suppress positional shift of a to-be-held member such as a gas detection element, as well as a method of manufacturing the gas sensor. A gas sensor (101) includes a gas detection element (111), a metallic shell (131), a plate packing (157), and a first packing (159). A proximal end surface (113t2) of a projection (113) of the gas sensor element (111) and a central inner circumferential surface (135n) of the metallic shell (131) form an acute-angle clearance (120). The first packing (159), which has a wedge-like cross section, is disposed in the clearance (120) such that the first packing (159) is pressed against the proximal end surface (113t2) of the projection (113) of the gas sensor element (111) and the central inner circumferential surface (135n) of the metallic shell (131).Type: ApplicationFiled: July 13, 2004Publication date: August 10, 2006Inventors: Hisaharu Nishio, Takashi Nakao, Kazuhiro Kouzaki