Patents by Inventor Haruki Yoshida
Haruki Yoshida 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: 8770777Abstract: A spark plug having excellent load life performance even when the spark plug receives an impact or vibration. The spark plug includes an accommodated portion of a metallic terminal, which is accommodated in an axial hole of an insulator, having a plurality of bent portions formed as a result of proper bending of the accommodated portion. The bent portions are in close vicinity to an inner circumferential surface of the insulator at three or more locations, and are present without localizing in the radial direction of the axial hole.Type: GrantFiled: September 16, 2011Date of Patent: July 8, 2014Assignee: NGK Spark Plug Co., Ltd.Inventors: Haruki Yoshida, Toshitaka Honda, Akira Suzuki
-
Patent number: 8710725Abstract: A spark plug having improved load life performance and fixing strength of a metallic terminal to an insulator, and which reduces the incidence of breakage of the insulator when the metallic terminal is inserted into the axial hole of the insulator. The spark plug of the present invention is characterized in that the distance ((B?A)/2) between the forward end portion of the metallic terminal and the wall surface of an intermediate diameter portion of the axial hole of the insulator falls within a range of 0.02 mm to 0.2 mm, the shrinkage amount (D?C) of a connecting portion falls within a range of 6 mm to 27 mm, and the Vickers hardness of the metallic terminal at ordinary temperature falls within a range of 100 Hv to 430 Hv.Type: GrantFiled: September 27, 2011Date of Patent: April 29, 2014Assignee: NGK Spark Plug Co. Ltd.Inventors: Haruki Yoshida, Toshitaka Honda
-
Publication number: 20140091700Abstract: A spark plug with both improved load life performance and improved radio-noise-preventing property, wherein the spark plug has a resistor containing a Ti component. The spark plug includes a circular columnar insulator having a through hole; a center electrode; a terminal shell; and a resistor provided in the through hole and between the terminal shell and the center electrode. The resistor contains glass, a Ti component, a Zr component, and a non-metallic electrically conductive material.Type: ApplicationFiled: September 27, 2013Publication date: April 3, 2014Applicant: NGK Spark Plug Co., Ltd.Inventors: Haruki Yoshida, Toshitaka Honda
-
Patent number: 8653725Abstract: A spark plug that prevents a sharp increase in resistance of a resistor and materializes an excellent load life performance. The spark plug has a resistor formed by heat-sealing of a resistor composition that contains, at least, a conductive material and glass powder. The glass powder contains between 35.0 mol % and 69.8 mol % SiO2, between 15.0 mol % and 49.8 mol % B2O3, between 5.0 mol % and 20.0 mol % Li2O, and at least one additive selected from MgO, CaO, SrO, BaO, Na2O, K2O, ZnO, and ZrO2 in a total of between 2.6 mol % and 25.0 mol %. Further, the total content of Li2O and the additive(s) in the glass powder is between 15.2 mol % and 45.0 mol %, and the ratio of the Li2O content to the total content of the additive(s) is between 1.3 and 5.0.Type: GrantFiled: August 19, 2010Date of Patent: February 18, 2014Assignee: NGK Spark Plug Co., LtdInventors: Haruki Yoshida, Toshitaka Honda
-
Patent number: 8641444Abstract: For an object of providing a connector which has improved heat radiating efficiency, the connector includes a terminal 2 including a wire connecting portion 21 which an electric wire is connected, and a connector housing 3 provided with a terminal receiving section 30 receiving the terminal 2. Heat radiating portions 45, 55 are provided at a position of the terminal receiving portion 30, at which the wire connecting portion 21 is covered. In the heat radiating portions 45, 55, a plurality of projections 49, 59 formed to project from the surface 4a, 5a of the terminal receiving section 30 is arranged at intervals to each other.Type: GrantFiled: April 6, 2011Date of Patent: February 4, 2014Assignee: Yazaki CorporationInventors: Haruki Yoshida, Yoshiaki Ozaki
-
Publication number: 20140030926Abstract: Provided with a first connector part to connect a first cable, a second connector part to connect a second cable, and to fit with a first connector part, thereby ensuring electrical connection between a first cable and a second cable, and a housing to hold a second connector part rotatably around an axial direction of a second cable.Type: ApplicationFiled: May 25, 2012Publication date: January 30, 2014Applicant: YAZAKI CORPORATIONInventors: Haruki Yoshida, Osamu Shinmura, Jun Asada, Kazuhiro Yokoyama, Tsuyoshi Mizushima
-
Publication number: 20130307402Abstract: A spark plug, comprised of: an insulator having an axial bore extending in the direction of an axis, a first inner circumferential surface extending at a forward side of the axial bore, a second inner circumferential surface extending at a rear side of the axial bore and having a diameter greater than that of the first inner circumferential surface, and a ledge connecting the first inner circumferential surface and the second inner circumferential surface; a center electrode having a head supported by the ledge and extending in a space surrounded by the second inner circumferential surface, and a circular columnar leg extending continuously from the forward end of the head in a space surrounded by the first inner circumferential surface; and a seal material for holding the center electrode in the axial bore.Type: ApplicationFiled: February 1, 2012Publication date: November 21, 2013Inventors: Haruki Yoshida, Takamitsu Mizuno, Atsushi Tsukada
-
Publication number: 20130285534Abstract: A spark plug includes an insulator having an axial hole, a first inner circumferential surface, a second inner circumferential surface whose diameter is greater than that of the first inner circumferential surface, and a ledge portion connecting the first and the second inner circumferential surfaces. The spark plug also includes a center electrode having a large-diameter portion, a projection portion, and a circular columnar leg portion that projects into a space surrounded by the first inner circumferential surface. The spark plug includes a seal portion which fixes the center electrode within the axial hole. When C<A, A?C?B?A, where A represents a diameter of an imaginary cylinder having the minimum diameter required for surrounding the projection portion, B represents a maximum diameter of the large-diameter portion, and C represents an average diameter of the leg portion present in the space surrounded by the first inner circumferential surface.Type: ApplicationFiled: February 2, 2012Publication date: October 31, 2013Applicant: NGK SPARK PLUG CO., LTD.Inventors: Satoru Ochiai, Haruki Yoshida, Takamitsu Mizuno, Atsushi Tsukada
-
Patent number: 8568008Abstract: An illumination unit for a vehicle comprising: a light emitting element; an outer housing including an opening, on which the light emitting element is mounted; a prism disposed between the light emitting element and the opening, the prism including a tip portion which is disposed at the opening, a body portion which continues from the tip portion, a flange portion which continues from the body portion, and a stage at a boundary between the tip portion and the body portion.Type: GrantFiled: January 15, 2010Date of Patent: October 29, 2013Assignee: Yazaki CorporationInventor: Haruki Yoshida
-
Publication number: 20130187531Abstract: A spark plug having improved load life performance and fixing strength of a metallic terminal to an insulator, and which reduces the incidence of breakage of the insulator when the metallic terminal is inserted into the axial hole of the insulator. The spark plug of the present invention is characterized in that the distance ((B?A)/2) between the forward end portion of the metallic terminal and the wall surface of an intermediate diameter portion of the axial hole of the insulator falls within a range of 0.02 mm to 0.2 mm, the shrinkage amount (D?C) of a connecting portion falls within a range of 6 mm to 27 mm, and the Vickers hardness of the metallic terminal at ordinary temperature falls within a range of 100 Hv to 430 Hv.Type: ApplicationFiled: September 27, 2011Publication date: July 25, 2013Inventors: Haruki Yoshida, Toshitaka Honda
-
Publication number: 20130175922Abstract: A spark plug having excellent load life performance, and a method of manufacturing the same, the spark plug having a connecting portion which electrically connects a center electrode and a metallic terminal within the axial hole of an insulator, the connecting portion including a resistor whose porosity is 5.0% or less.Type: ApplicationFiled: September 7, 2011Publication date: July 11, 2013Inventors: Haruki Yoshida, Toshitaka Honda, Houju Fukushima
-
Publication number: 20130140975Abstract: A spark plug having excellent load life performance even when the spark plug receives an impact or vibration. The spark plug includes an accommodated portion of a metallic terminal, which is accommodated in an axial hole of an insulator, having a plurality of bent portions formed as a result of proper bending of the accommodated portion. The bent portions are in close vicinity to an inner circumferential surface of the insulator at three or more locations, and are present without localizing in the radial direction of the axial hole.Type: ApplicationFiled: September 16, 2011Publication date: June 6, 2013Inventors: Haruki Yoshida, Toshitaka Honda, Akira Suzuki
-
Patent number: 8294345Abstract: A spark plug (100) has a resistor (15) between a center electrode 3 and a metal terminal (13). The resistor (15) contains glass, ceramic powder, an electrically conductive material, and metal. An average of two or more particles of the metal are present in an arbitrary region measuring 300 (?m)×300 (?m) on an arbitrary section of the resistor (15), and the total sectional area of the metal present in the region accounts for less than 1.6% of the region.Type: GrantFiled: October 30, 2009Date of Patent: October 23, 2012Assignee: NGK Spark Plug Co., Ltd.Inventors: Haruki Yoshida, Keita Nakagawa, Tsutomu Shibata
-
Publication number: 20120176021Abstract: A spark plug that prevents a sharp increase in resistance of a resistor and materializes an excellent load life performance. The spark plug has a resistor formed by heat-sealing of a resistor composition that contains, at least, a conductive material and glass powder. The glass powder contains between 35.0 mol % and 69.8 mol % SiO2, between 15.0 mol % and 49.8 mol % B2O3, between 5.0 mol % and 20.0 mol % Li2O, and at least one additive selected from MgO, CaO, SrO, BaO, Na2O, K2O, ZnO, and ZrO2 in a total of between 2.6 mol % and 25.0 mol %. Further, the total content of Li2O and the additive(s) in the glass powder is between 15.2 mol % and 45.0 mol %, and the ratio of the Li2O content to the total content of the additive(s) is between 1.3 and 5.0.Type: ApplicationFiled: August 19, 2010Publication date: July 12, 2012Applicant: NGK Spark Plug Co., Ltd.Inventors: Haruki Yoshida, Toshitaka Honda
-
Publication number: 20120126683Abstract: A spark plug exhibits excellent load life performance even when the resistor thereof has been thermally compacted at slightly varied heating temperatures. The spark plug includes an insulator having an axial hole extending therethrough along the axial direction; a center electrode inserted into a front end portion of the axial hole; a terminal electrode inserted into a rear end portion of the axial hole; a resistor disposed in the axial hole to be located between the center electrode and the terminal electrode, and containing at least an electrically conductive material and glass. The resistor contains 15.0 or more mass % of SiO2, 20.4-44.8 mass % of B2O3, 2.5-6.3 mass % of Li2O, and 3.5-14.6 mass % of BaO. The ratio of B2O3 to the total amount of Li2O and BaO is 1.43 or higher. The ratio of Li2O to BaO is 0.22 or higher.Type: ApplicationFiled: September 22, 2010Publication date: May 24, 2012Applicant: NGK Spark Plug Co., LTD.Inventors: Haruki Yoshida, Toshitaka Honda
-
Publication number: 20120122345Abstract: For an object of providing a connector which has improved heat radiating efficiency, the connector includes a terminal 2 including a wire connecting portion 21 which an electric wire is connected, and a connector housing 3 provided with a terminal receiving section 30 receiving the terminal 2. Heat radiating portions 45, 55 are provided at a position of the terminal receiving portion 30, at which the wire connecting portion 21 is covered. In the heat radiating portions 45, 55, a plurality of projections 49, 59 formed to project from the surface 4a, 5a of the terminal receiving section 30 is arranged at intervals to each other.Type: ApplicationFiled: April 6, 2011Publication date: May 17, 2012Applicant: YAZAKI CORPORATIONInventors: Haruki Yoshida, Yoshiaki Ozaki
-
Publication number: 20110204766Abstract: A spark plug (100) has a resistor (15) between a center electrode 3 and a metal terminal (13). The resistor (15) contains glass, ceramic powder, an electrically conductive material, and metal. An average of two or more particles of the metal are present in an arbitrary region measuring 300 (?m)×300 (?m) on an arbitrary section of the resistor (15), and the total sectional area of the metal present in the region accounts for less than 1.6% of the region.Type: ApplicationFiled: October 30, 2009Publication date: August 25, 2011Applicant: NGK SPARK PLUG CO., LTD.Inventors: Haruki Yoshida, Keita Nakagawa, Tsutomu Shibata
-
Publication number: 20100195344Abstract: An illumination unit for a vehicle comprising: a light emitting element; an outer housing including an opening, on which the light emitting element is mounted; a prism disposed between the light emitting element and the opening, the prism including a tip portion which is disposed at the opening, a body portion which continues from the tip portion, a flange portion which continues from the body portion, and a stage at a boundary between the tip portion and the body portion.Type: ApplicationFiled: January 15, 2010Publication date: August 5, 2010Applicant: YAZAKI CORPORATIONInventor: Haruki YOSHIDA
-
Publication number: 20100195343Abstract: An illumination unit for a vehicle comprising: a light emitting element; an outer housing including an opening, on which the light emitting element is mounted; a prism disposed between the light emitting element and the opening, the prism including a tip portion which is disposed at the opening, a body portion which continues from the tip portion, a flange portion which continues from the body portion, and a stage at a boundary between the tip portion and the body portion.Type: ApplicationFiled: January 15, 2010Publication date: August 5, 2010Applicant: YAZAKI CORPORATIONInventor: Haruki YOSHIDA
-
Patent number: 7753708Abstract: A headrest side connector unit mounted on a headrest of a vehicle includes a stay as a holder and a connector. The connector includes a projection 430 to be received in a projection insertion hole formed on the stay. A tip part of the second connector at a side to be connected to the mating connector is disposed further outside of the stay than an end of the stay near a seat. An outer surface of the tip part is arranged on the same plane as an outer surface of the end of the stay.Type: GrantFiled: August 17, 2007Date of Patent: July 13, 2010Assignees: Yazaki Corporation, Toyota Bashoku Kabushiki KaishaInventors: Haruki Yoshida, Eiji Fukuda, Sumito Atsumi, Hiroshi Kobayashi, Kiyoka Matsubayashi, Fumitoshi Akaike, Masatoshi Mori