Patents by Inventor Tadahisa Sakaguchi
Tadahisa Sakaguchi 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: 20060057904Abstract: The jointing sleeve component includes a sleeve made of electrically conductive metal. A diameter of the sleeve is to be reduced by swaging on a condition that core wire ends of a plurality of coated electric wires are received in the sleeve. Each core wire end is obtained by removing an insulating coating from the coated electric wire. The jointing sleeve component electrically connects the core wire ends to each other. The sleeve is formed in a pipe-shape from a developed material, which is stamped out from a plate made of the electrically conductive metal to have a specific shape.Type: ApplicationFiled: July 6, 2005Publication date: March 16, 2006Applicant: YAZAKI CORPORATIONInventors: Tadahisa Sakaguchi, Masanori Onuma, Nobuyuki Asakura
-
Patent number: 6986288Abstract: In the method for evaluating a welded part, it is performed to make an inspection press member press the welded part for connecting a plurality of wires with each other to apply a predetermined compressive load on the welded part. Next, it is performed to measure an amount of strain of the welded part when it is subjected to the compressive load. The evaluation of the welded part in welding condition is carried out by judging whether or not the measured amount of strain is within a predetermined range.Type: GrantFiled: January 14, 2004Date of Patent: January 17, 2006Assignee: Yazaki CorporationInventors: Hiroshi Ichikawa, Tadahisa Sakaguchi, Nobuyuki Asakura
-
Patent number: 6951491Abstract: A connection cap includes: an insulative cap body for receiving conductors of a wire provided with a back wall and an opening at respective opposite ends thereof; an electrically-conductive conductor connection member which is provided within the cap body and is adapted to be connected to the conductors when the cap body is compressed radially in a state the conductors are received in the cap body; and an electrically-conductive resin material which is filled in a back wall-side portion of the cap body, and is extruded toward the opening to penetrate into interstices between the conductors when the cap body is compressed.Type: GrantFiled: April 16, 2004Date of Patent: October 4, 2005Assignee: Yazaki CorporationInventors: Tadahisa Sakaguchi, Masanori Onuma
-
Publication number: 20050164547Abstract: The connection cap includes a rear end wall positioned at a rear end of the connection cap for confining a sealing uncured resin, an opening positioned at a forward end of the connection cap for inserting a jointing portion of core wires of electrical cables, and a cylindrical wall extending from the opening to the rear end wall. The cylindrical wall has an inner surface formed with a plurality of ribs for positioning the jointing portion in the connection cap. The ribs are distributed in a circumferential direction to uniformly support the electrical cable. The uncured resin intrudes clearances each defined between adjacent two of the ribs. The inner surfaces of ribs define an inscribed circle having a diameter substantially the same as an outer diameter of the conductive sleeve. Advantageously, the ribs each have a forward end portion formed with a tapered surface gradually rising toward the rear end of connection cap.Type: ApplicationFiled: December 1, 2004Publication date: July 28, 2005Applicant: YAZAKI CORPORATIONInventors: Tadahisa Sakaguchi, Masanori Onuma
-
Publication number: 20040253857Abstract: A connection cap includes: an insulative cap body for receiving conductors of a wire provided with a back wall and an opening at respective opposite ends thereof; an electrically-conductive conductor connection member which is provided within the cap body and is adapted to be connected to the conductors when the cap body is compressed radially in a state the conductors are received in the cap body; and an electrically-conductive resin material which is filled in a back wall-side portion of the cap body, and is extruded toward the opening to penetrate into interstices between the conductors when the cap body is compressed.Type: ApplicationFiled: April 16, 2004Publication date: December 16, 2004Applicant: YAZAKI CORPORATIONInventors: Tadahisa Sakaguchi, Masanori Onuma
-
Publication number: 20040187596Abstract: In the method for evaluating a welded part, it is performed to make an inspection press member press the welded part for connecting a plurality of wires with each other to apply a predetermined compressive load on the welded part. Next, it is performed to measure an amount of strain of the welded part when it is subjected to the compressive load. The evaluation of the welded part in welding condition is carried out by judging whether or not the measured amount of strain is within a predetermined range.Type: ApplicationFiled: January 14, 2004Publication date: September 30, 2004Inventors: Hiroshi Ichikawa, Tadahisa Sakaguchi, Nobuyuki Asakura
-
Patent number: 6749457Abstract: In a crimp terminal for crimping at least one bare conductor of at least one sheathed electric wire, the at least one bare conductor is placed on a bottom plate. A pair of crimp craws extend from the bottom plate to crimp the at least one bare conductor placed on the bottom plate. A plurality of serrations are formed at least on an inner face of the bottom plate to bite the at least one bare conductor crimped by the crimp claws. At least one of the serrations has a depth different from a depth of each another serration.Type: GrantFiled: July 12, 2002Date of Patent: June 15, 2004Assignee: Yazaki CorporationInventors: Tadahisa Sakaguchi, Toshihiro Maki
-
Publication number: 20030226823Abstract: A welding terminal for electrically connecting a conductor portion of a wire includes a terminal base plate portion, on which the conductor portion is placed for welding and a pair of side walls, formed on opposite side edges of the terminal base plate portion so as to stand perpendicularly. The wire has a plurality of conductors covered with a insulating sheath. Each corner portion formed by the each side wall and terminal base plate portion has a rounded shape in cross section.Type: ApplicationFiled: April 25, 2003Publication date: December 11, 2003Applicant: YAZAKI CORPORATIONInventors: Kei Fujimoto, Tadahisa Sakaguchi
-
Patent number: 6643926Abstract: In a shield terminal joining structure for joining a shield terminal to a prescribed grounding position along a shielded cable that is formed by an inner core wire made of a conductor, an inner insulation covering that covers the inner core wire, a braid that is provided around the outside periphery of the inner insulation covering, an outer insulation covering that covers the braid, resistive welding is performed while crimping parts of the shield terminal to the outer covering of the shielded cable at the grounding position, so as to melt away part of the outer insulation covering, enabling a weld to be made between the crimping parts and the braid of the shielded cable.Type: GrantFiled: May 16, 2001Date of Patent: November 11, 2003Assignee: Yazaki CorporationInventors: Tadahisa Sakaguchi, Yasumichi Kuwayama
-
Publication number: 20030013353Abstract: In a crimp terminal for crimping at least one bare conductor of at least one sheathed electric wire, the at least one bare conductor is placed on a bottom plate. A pair of crimp craws extend from the bottom plate to crimp the at least one bare conductor placed on the bottom plate. A plurality of serrations are formed at least on an inner face of the bottom plate to bite the at least one bare conductor crimped by the crimp claws. At least one of the serrations has a depth different from a depth of each another serration.Type: ApplicationFiled: July 12, 2002Publication date: January 16, 2003Applicant: YAZAKI CORPORATIONInventors: Tadahisa Sakaguchi, Toshihiro Maki
-
Patent number: 6482051Abstract: A connection structure for a conductive connection between a clad electric wire and a member according to the present invention comprises a member having a conductivity, a clad electric wire superposed on the member, a resinous layer disposed between the member and the clad electric wire, and a pair of resinous parts clamping the clad electric wire and the member at their superposed portion. The clad electric wire has a conductor portion and a resin-made clothing portion clothing an outer periphery of the conductor portion. The superposed portion is pressurized and ultrasonically excited through the resinous parts, with the result that the clothing portion is scattered and melted; the resin portion is melted; the conductor portion is conductively connected to the member; and the resinous parts are fused together in a state of their clothing the superposed portion.Type: GrantFiled: July 8, 1999Date of Patent: November 19, 2002Assignee: Yazaki CorporationInventors: Tetsuro Ide, Tadahisa Sakaguchi
-
Patent number: 6302733Abstract: A connector is provided with waterproof structure. In the structure, a covered wire having a conductor covered with a cover part is connected with a terminal and inserted into a wire insertion hole communicating with a terminal accommodating chamber of a connector body. The waterproof structure is provided by welding the cover part to a connector part defining the wire insertion hole due to ultrasonic oscillating and pressing from outside. The wire insertion hole is provided with a diametrical portion capable of adhering to a cover part of the thinnest wire of the covered wires having differential diameters. Owing to the provision of the diametrical portion, the waterproof structure allows the connector to cope with the covered wires having different diameters.Type: GrantFiled: July 23, 1999Date of Patent: October 16, 2001Assignee: Yazaki CorporationInventors: Tadahisa Sakaguchi, Akira Shinchi
-
Patent number: 6302981Abstract: A waterproof structure for an electric wire drawout portion is low in manufacturing cost and enhanced in waterproofness. A cover portion is formed on an end portion of a housing and on this cover portion there is mounted a lower rubber-like elastic member. An upper cover portion is welded to the cover portion by ultrasonic oscillation and on the upper cover portion there is mounted an upper rubber-like elastic member brought into pressure contact with the lower rubber-like elastic member and an electric wire. On the cover portion and the upper cover portion there are integrally formed lower and upper projections exposed on surfaces of the lower and the upper rubber-like elastic member.Type: GrantFiled: March 6, 2000Date of Patent: October 16, 2001Assignee: Yazaki CorporationInventors: Tadahisa Sakaguchi, Naoki Ito, Akira Shinchi
-
Publication number: 20010020540Abstract: In a shield terminal joining structure for joining a shield terminal to a prescribed grounding position along a shielded cable that is formed by an inner core wire made of a conductor, an inner insulation covering that covers the inner core wire, a braid that is provided around the outside periphery of the inner insulation covering, an outer insulation covering that covers the braid, resistive welding is performed while crimping parts of the shield terminal to the outer covering of the shielded cable at the grounding position, so as to melt away part of the outer insulation covering, enabling a weld to be made between the crimping parts and the braid of the shielded cable.Type: ApplicationFiled: May 16, 2001Publication date: September 13, 2001Applicant: Yazaki CorporationInventors: Tadahisa Sakaguchi, Yasumichi Kuwayama
-
Patent number: 6265664Abstract: In a shield terminal joining structure for joining a shield terminal to a prescribed grounding position along a shielded cable that is formed by an inner core wire made of a conductor, an inner insulation covering that covers the inner core wire, a braid that is provided around the outside periphery of the inner insulation covering, an outer insulation covering that covers the braid, resistive welding is performed while crimping parts of the shield terminal to the outer covering of the shielded cable at the grounding position, so as to melt away part of the outer insulation covering, enabling a weld to be made between the crimping parts and the braid of the shielded cable.Type: GrantFiled: August 20, 1999Date of Patent: July 24, 2001Assignee: Yazaki CorporationInventors: Tadahisa Sakaguchi, Yasumichi Kuwayama
-
Patent number: 6129576Abstract: A waterproof structure for an electric wire drawout portion is low in manufacturing cost and enhanced in waterproofness. A cover portion is formed on an end portion of a housing and on this cover portion there is mounted a lower rubber-like elastic member. An upper cover portion is welded to the cover portion by ultrasonic oscillation and on the upper cover portion there is mounted an upper rubber-like elastic member brought into pressure contact with the lower rubber-like elastic member and an electric wire. On the cover portion and the upper cover portion there are integrally formed lower and upper projections exposed on surfaces of the lower and the upper rubber-like elastic member.Type: GrantFiled: December 22, 1997Date of Patent: October 10, 2000Assignee: Yazaki CorporationInventors: Tadahisa Sakaguchi, Naoki Ito, Akira Shinchi