Patents by Inventor Takao Murakami
Takao Murakami 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: 20030017755Abstract: A connector terminal which includes a terminal base portion; and a tab extending from the terminal base portion to be inserted into an opponent terminal. The tab includes a bottom face portion and an upper face portion which extends from the bottom face portion and is formed by bending so as to overlap the bottom face portion. The bottom face portion and the upper face portion collectively form a tapered portion tapering off to a point at a tip end of the tab. The bottom face portion and the upper face portion are bent so that tip ends thereof approach to each other, and define an inner space therebetween.Type: ApplicationFiled: July 17, 2002Publication date: January 23, 2003Applicant: YAZAKI CORPORATIONInventors: Takao Murakami, Chieko Torii
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Patent number: 6497584Abstract: A half-fitting prevention connector (1) includes a pair of male and female connectors (2, 3) which are fittable to each other. A spring member (5) is received in the male connector (2) and prevents a half-fitted condition of the male and female connectors due to a resilient force thereof. A lock arm (10) is elastically and displaceably connected to a housing of one of the male and female connectors by interconnecting portions (30). The sum of the transverse cross-sectional areas of the interconnecting portions (30) is smaller than the transverse cross-sectional area of the lock arm (10) so that the entire lock arm (10) is not elastically deformed when canceling a fitted condition of the male and female connectors. When the male and female connectors are completely fitted to each other, the spring member (5) urges the lock arm (10) in such a direction that the lock arm (10) can retain the mating connector (3).Type: GrantFiled: September 12, 2000Date of Patent: December 24, 2002Assignee: Yazaki CorporationInventors: Takao Murakami, Masaru Fukuda
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Patent number: 6494740Abstract: Terminals (14) are connected to electric wires (13), a connector housing (12) has chambers (11) for accommodating the terminals (14) and an opening (12a) for passing the electric wires (13), and a soft sealing material (15) seals the opening (12a) with its sealing configuration. The soft sealing material (15) has insertion holes (21) for the terminals (14) to be inserted therethrough to the chambers (11), and is deformed from its initial configuration in which a respective insertion hole (21) is larger in section than a corresponding terminal (14), to the sealing configuration in which the respective insertion hole (21) has an identical section to an electric wire (13) connected to the corresponding terminal (14).Type: GrantFiled: March 30, 1999Date of Patent: December 17, 2002Assignee: Yazaki CorporationInventors: Takao Murakami, Masaru Fukuda
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Publication number: 20020171207Abstract: A seal member is provided with a tube portion closely contacted with an inserted electric wire so as to be waterproof, and a sleeve portion including a through hole communicated with the tube portion, and one or more elastically deforming projections formed in an outer periphery thereof. The projections are elastically deformed by caulking arms of an electric terminal and the sleeve portion, the terminal and the electric wire are closely fixed to each other in a case where the sleeve portion is caulked by the caulking arms.Type: ApplicationFiled: May 16, 2002Publication date: November 21, 2002Applicant: YAZAKI CORPORATION.Inventors: Chieko Torii, Takao Murakami
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Patent number: 6482021Abstract: A structure of a waterproof portion of a waterproof connector comprising: an inner housing 14 provided with a terminal chamber 12; an outer housing 18 provided with an enter port 16 receiving an opposite connector 30 at a tip thereof, the outer housing having the inner housing 14 engaged therewith; an interconnector waterproof portion 20 liquid-tightly sealing a space with the opposite connector 30, the inter connector waterproof portion being provided in the outer housing 18; and a wire waterproof portion 24 covering a connection portion of a wire 22 protruding outward from the terminal chamber 12, wherein a communication path 36 communicating between the interconnector waterproof portion 20 and the wire waterproof portion 24 is provided, and the interconnector waterproof portion 20 and the wire waterproof portion 24 are continuously formed by monolithic molding using thermoplastic resin 38 through the communication path 36.Type: GrantFiled: October 29, 2001Date of Patent: November 19, 2002Assignee: Yazaki CorporationInventors: Terufumi Hara, Takao Murakami
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Patent number: 6475015Abstract: In a half-fitting prevention connector (200), a slider (10) prevents a half-fitted condition of a pair of connectors by an urging force by compression springs (9) provided in a housing (3) of a male connector (1), and the slider is received in the housing. When the male connector is to be fitted relative to a female connector (2), the slider cooperates with the compression springs (9) to move between a lock position where the slider holds a lock arm (6), provided in the housing (3), in retained relation to a housing (21) of the female connector (2) and a non-lock position. The lock arm (6) has a lock projection (40) for retaining the slider (10) in the lock position against the urging force of the compression springs (9). A slanting surface for dissipating an impinging force of the slider (10) is formed on the lock projection (40) which can abut against an engagement portion (51) of the slider (10).Type: GrantFiled: June 9, 2000Date of Patent: November 5, 2002Assignee: Yazaki CorporationInventors: Takao Murakami, Masaru Fukuda
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Patent number: 6469261Abstract: A wiring unit is provided, by which the cost of the manufacture and assembly thereof can be prevented from raising and the miniaturization thereof can be attained. The wiring unit 1 includes a first flexible insulating sheet 2, a plurality of flexible band-shaped conductors 3 and a plurality of enameled wires 4. The band-shaped conductors 3 are arranged in parallel with each other on the surface 2a of the first insulating sheet 2. Wires 16 are connected to both ends of the band-shaped conductor 3. The enameled wire 4 electrically connects a plurality of the band-shaped conductors 3 with each other. The first insulating sheet 2 is rolled up around an axis P parallel to the band-shaped conductor 3 from one end 5 to the other end 6 of the first insulating sheet 2. The first insulating sheet 2 is rolled up into a roll, thereby the wiring unit 1 is produced.Type: GrantFiled: July 25, 2001Date of Patent: October 22, 2002Assignee: Yazaki CorporationInventors: Makoto Yamanashi, Takao Murakami, Hiroyuki Suzuki
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Patent number: 6468113Abstract: An inner housing is formed with terminal accommodation chambers for accommodating terminals at ends of electric wires, an outer housing fitted on the inner housing has, in opposition to the terminal accommodation chambers, outside locations of a bottom wall portion formed with wire insertion holes and, at inside locations of the bottom wall portion opposite to the wire insertion holes, rubber plug reception recesses for receiving waterproof rubber plugs for sealing the terminal accommodation chambers, and the outer housing comprises an inner wall portion integrated with the bottom wall portion, the inner wall portion having an accommodation space for the inner housing to be fitted therein, and an outer wall portion separated from an assembly of the inner wall portion and the bottom wall portion, to be provided thereabout in a spaced manner relative to the inner wall portion, the outer wall portion being removably attached to the assembly.Type: GrantFiled: June 24, 1999Date of Patent: October 22, 2002Assignee: Yazaki CorporationInventors: Takao Murakami, Masaru Fukuda
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Publication number: 20020151215Abstract: A terminal anchoring lance 20 includes a first anchoring portion 21 and a second anchoring potion 22 which are arranged apart from each other in a direction of inserting a female terminal 30. The female terminal 30 includes a first engagement portion 33 corresponding to the first anchoring portion and a second engagement portion 36 corresponding to the second anchoring portion. The second anchoring portion is arranged at the base 20b of the terminal anchoring lance or on the wall of a connector housing 11 on the extending line of the terminal anchoring lance. The first anchoring portion is formed as a tip of the terminal anchoring lance, and the second anchoring portion is formed as a projection. The second engagement portion is formed as a projection at the rear end of a female electrical contact portion 31 of the terminal, and the first engagement portion is formed as a projection at the front end of the electrical contact.Type: ApplicationFiled: April 12, 2002Publication date: October 17, 2002Applicant: Yazaki CorporationInventors: Makoto Yamanashi, Takao Murakami, Chieko Torii
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Patent number: 6465748Abstract: A wiring unit 1 with a plurality of printed circuit boards 2 which are successively stacked and pin units 3. The printed circuit boards 2 each has a conductor pattern 7 formed on the surface 6a of an insulating plate 6. The conductor pattern 7 is composed of a first plurality of belt-like conductors 11 and a second plurality of belt-like conductors 12. Through-holes 13 are formed at points 14 where the belt-like conductors 11 and 12 cross each other. The pin units 21 each is composed of a conductive pin 20 and a C-bush 21. The C-bush 21 is provided with a pair of spring segment segments 24. The C-bush 21 is press-fit into the through-hole 13 to sandwich the printed circuit board 2 between the pair of spring segments 24. The C-bush 21 is communicated with the conductor pattern 7. The pin 20 is inserted into the through-hole 13 into which the C-bush 21 is press-fit. The conductive pin 20 is communicated with the C-bush 21. In this configuration, the wiring unit can be minimized in production cost and size.Type: GrantFiled: June 25, 2001Date of Patent: October 15, 2002Assignee: Yazaki CorporationInventors: Makoto Yamanashi, Takao Murakami, Hiroyuki Suzuki
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Patent number: 6464535Abstract: In a waterproof connector 10 having a housing main body 11 having a plurality of terminal receiving chambers 12, a fitting portion 15 formed in the housing main body 11 and fitted to a mating housing main body, and a protecting portion 23 formed in an opposite side to the fitting portion 15 of the housing main body 11 and protecting a plurality of tube-shaped electric wire inserting portions 16 extended from the terminal receiving chamber 12, there is provided a molding sink preventing section 24 formed between the protecting portion 23 and the electric wire inserting portion 16 and all around an outer periphery of the electric wire inserting portion 16, and preventing a molding sink from being generated in the electric wire inserting portion 16 at a time of molding.Type: GrantFiled: August 29, 2001Date of Patent: October 15, 2002Assignee: Yazaki CorporationInventors: Takao Murakami, Masaru Fukuda
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Publication number: 20020146281Abstract: Provided is a connector designed for double retention of a terminal fitting, which inhibits flexure of a flexible lance retaining the terminal fitting by pushing a front holder from a temporary retention position into a full retention position. The connector includes at least any one of abutting planes of a retaining protrusion and a retention arm performing temporary retention of the front holder, as an element to strengthen retention when pushing force is applied to the front holder. Specifically, said abutting plane is formed as an inclined plane with an angle in a direction of generating bites upon application of pushing force. And the connector is designed to effectuate release of retention by means of inserting a retention release jig from a front side of the connector housing.Type: ApplicationFiled: February 20, 2002Publication date: October 10, 2002Applicant: YAZAKI CORPORATIONInventor: Takao Murakami
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Patent number: 6457981Abstract: A wiring unit is provided, which includes: insulative substrates, each having through holes, to be stacked up each other; strip conductors, each having contact holes meeting the respective through holes, to be arranged in parallel on each of the insulative substrate; and a conductor pin consisting of a pin portion of conductive material to be inserted into both the through hole and the contact hole with a gap therewith and a conductor contact portion radially projecting from the pin portion so as to be put into contact with the strip conductor. The conductor contact portion has a peripheral portion to be put into contact with the strip conductor. At least one of the strip conductors has a male tab to protrude from the insulative substrate so as to be connected with a terminal electrically connected with external equipment. And, an electric junction box further includes a connector unit consisting of a wire, a terminal connected with the wire, and a housing accommodating the terminal is provided.Type: GrantFiled: April 17, 2001Date of Patent: October 1, 2002Assignee: Yazaki CorporationInventors: Makoto Yamanashi, Takao Murakami, Hiroyuki Suzuki
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Patent number: 6454582Abstract: A wiring unit 1 is housed in a case of an electric connecting box. The wiring unit includes a plurality of flat circuit bodies each composed of an insulating plate 21 and a plurality of bus bars 22 extended in parallel, and a short-circuiting member 23 composed of a pair of pin segments 24 and a coupling segment 25 for coupling them. The short-circuiting member 23 is formed in a -shape. The pin segments 24 are stuck into the bus bars so that the bus bars 22 are electrically connected to each other. In this configuration, the wiring unit can be manufactured at low cost and can be downsized.Type: GrantFiled: July 3, 2001Date of Patent: September 24, 2002Assignee: Yazaki CorporationInventors: Makoto Yamanashi, Hiroyuki Suzuki, Takao Murakami
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Patent number: 6443738Abstract: A wiring unit 1 includes a plurality of crimping terminals 2; and a plurality of insulating plates for holding said crimping terminals. The insulating plate 2 has a terminal groove 5 concaved from the surface, an accommodating portion 6 and a through-hole 7. The accommodating portion 6 is formed in concave from one of a pair of partition walls 9a and 9b constituting the terminal accommodating groove 5. The through-hole 7 passes through the insulating plate 2 and communicates with the accommodating portion 6. The crimping terminal 3 is composed of the electric-wire connecting portion 13 on which the electric wire is crimped and an electric-wire connecting portion 14. The insulating plates 2 are stacked while holding the crimping terminals 3. The electric contact portions 14 of the crimping terminals 3 held in the adjacent lower and upper insulating plates 2 are not superposed.Type: GrantFiled: June 13, 2001Date of Patent: September 3, 2002Assignee: Yazaki CorporationInventors: Makoto Yamanashi, Takao Murakami, Hiroyuki Suzuki
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Publication number: 20020119700Abstract: A connector is provided with a covered electric wire in which a front end of a core is exposed by peeling off a coating, a terminal provided with a caulking portion having one or more openings, and a resin housing in which an outer periphery of the terminal and a part of the insulator are inserted therein. The caulking portion clamps the core with exposing a part of the core from the openings. The resin is impregnated to the core not only from both ends of the caulking portion but also from the openings.Type: ApplicationFiled: February 20, 2002Publication date: August 29, 2002Applicant: YAZAKI CORPORATIONInventor: Takao Murakami
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Publication number: 20020113378Abstract: In a packing (20) interposed between inner and outer peripheries of two members fitted to each other and in a state of being attached to one of two members, pressure contacting a lip portion (21) with another, thereby sealing a gap between both of the members, wherein a hollow portion (22) is provided at least in an inner side of the lip portion (21). The hollow portion (22) is formed according to a gas assist molding.Type: ApplicationFiled: February 14, 2002Publication date: August 22, 2002Applicant: YAZAKI CORPORATIONInventors: Takao Murakami, Makoto Yamanashi
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Publication number: 20020111066Abstract: A connector comprises a housing main body 27, a stopper having a flexibility, and a spacer 29. The housing main body is provided with a deflection restricting means 37 which with said spacer 29 in contact with said stopper 35, restricts said stopper 35 from being deflected in the installation direction of said spacer 29 onto said housing main body 27.Type: ApplicationFiled: January 28, 2002Publication date: August 15, 2002Applicant: YAZAKI CORPORATIONInventors: Tetsuo Kato, Takao Murakami
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Publication number: 20020111082Abstract: A male terminal fitting and a method of manufacturing the same is disclosed as including a plate-shaped contact protrusion (11, 31, 41, 51) formed at one side for mating with a female terminal fitting, and a conductor clamping portion (12, 32, 42, 52) located at the other side for clamping a conductor of an electric wire. The plate-shaped contact protrusion includes a base plate component (14, 34, 44, 54) extending from the conductor clamping portion in a longitudinally elongated shape, and an overlapping fold plate component (15, 35, 36, 45, 46, 55) laterally extending from a side of the base plate component. The plate-shaped contact protrusion further includes a flatness securing plate component (16, 35, 44, 56) laterally extending from the base plate component and overlaps with the overlapping fold plate component to ensure flatness conditions of the base plate component and the overlapping fold plate component.Type: ApplicationFiled: February 1, 2002Publication date: August 15, 2002Inventors: Takao Murakami, Chieko Torii, Isao Nishimura
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Publication number: 20020102878Abstract: A connector 10 with a connector housing 11 having a terminal housing chamber 14 into which a terminal 32, is inserted from the rear. An engaged portion 32b of the terminal 32 is engaged with a flexible engagement arm 17 which is protruded into the terminal housing chamber 14. At each side of the flexible engagement arm 17, a protrusion 17e for disengagement by a tool is provided for disengaging the engaging portion 18 of the flexible engagement arm 17 from the engaged portion 32b of the terminal 32.Type: ApplicationFiled: January 30, 2002Publication date: August 1, 2002Applicant: YAZAKI CORPORATIONInventor: Takao Murakami