US3243868A - Method for making an electrical contact socket - Google Patents

Method for making an electrical contact socket Download PDF

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Publication number
US3243868A
US3243868A US212776A US21277662A US3243868A US 3243868 A US3243868 A US 3243868A US 212776 A US212776 A US 212776A US 21277662 A US21277662 A US 21277662A US 3243868 A US3243868 A US 3243868A
Authority
US
United States
Prior art keywords
spring
die
tubular
punch
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US212776A
Other languages
English (en)
Inventor
Charles C Anderson
Roy B Rinehart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Micronas GmbH
International Telephone and Telegraph Corp
Original Assignee
Deutsche ITT Industries GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US3123429D priority Critical patent/US3123429A/en
Priority to FR884712A priority patent/FR1316005A/fr
Priority to DE19621440870 priority patent/DE1440870B2/de
Priority to GB16047/62A priority patent/GB999817A/en
Application filed by Deutsche ITT Industries GmbH filed Critical Deutsche ITT Industries GmbH
Priority to US212776A priority patent/US3243868A/en
Application granted granted Critical
Publication of US3243868A publication Critical patent/US3243868A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/49218—Contact or terminal manufacturing by assembling plural parts with deforming
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49789—Obtaining plural product pieces from unitary workpiece
    • Y10T29/49798—Dividing sequentially from leading end, e.g., by cutting or breaking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49945—Assembling or joining by driven force fit

Definitions

  • This invention relates to the electrical connector art and in particular to an improved electrical contact socket for use with any standard or other suitable contact pin, as well as to one form of apparatus and one method for making the contact socket.
  • Elongated tubular or sleeve type socket contacts in general are well known, and there are various forms which function properly under congenial circumstances. Some of them depend for inherent spring action to assure a good frictional seating of the mating pin against constrictions in the body of the sleeve or pocket, or against the primary surface of the tubular member. In such cases the sleeve must possess the characteristics of a spring material, and some materials which offer suitable spring action are not the best conductors which might be selected. Furthermore, sockets or sleeves of this type are costly to manufacture.
  • the socket consists primarily of a solid tubular member provided with an auxiliary spring member
  • the spring member is usually of a rather complex shape specially formed and thereafter installed on the socket using special tooling.
  • the primary function of the spring is a frictionally urge the mating pin into intimate electrical contact with a surface portion of the socket.
  • Those sockets wherein the spring member is especially formed and subsequently installed may be satisfactory from an electrical standpoint, but they are expensive to produce, diflicult to automate for production assembly, and they have the further disadvantage that they usually cannot be used on a crimp type socket which is forcibly inserted through a rubber insulator. The reason for the latter deficiency is that the rubber tends to tear the spring clip off the socket when the latter is being inserted.
  • a broad object of the present invention is to overcome the several disadvantages enumerated.
  • an object of the present invention is to produce a contact socket which externally has the form of a tube without projecting appurtenances and wherein a spring is located entirely internally of the tubular portion, which spring provides the function of yieldably urging a mating pin into frictional and electrical contact with an internal wall surface of the tubular member.
  • a further object of the invention is to provide a contact socket of the type identified wherein the tubular primary electrical conductor portion of the socket contact can be made of the most suitable conductive material, either by drilling a rod or starting with a tubular form, and wherein the spring of a material having the desired characteristics is formed and inserted into the tube in one continuous operation.
  • the tubular primary electrical conductor portion of the socket contact can be made of the most suitable conductive material, either by drilling a rod or starting with a tubular form, and wherein the spring of a material having the desired characteristics is formed and inserted into the tube in one continuous operation.
  • FIG. 1 is a greatly magnified longitudinal section through a contact socket embodying the invention, utilizing a first form of spring.
  • FIG. 2 is a view similar to FIG. 1 illustrating a contact pin fully inserted into the socket.
  • FIG. 3 is a cross-section taken on the line 33 of FIG. 2.
  • FIG. 4 is a cross-section taken on the line 4-4 of FIG. 1.
  • FIGS. 5, 6 and 7 are vertical sectional views illustrating in simplified form the elements of. an apparatus for forming the spring, inserting it in the socket and performing an indentation operation.
  • FIG. 8 is a series of a longitudinal cross-sectional views illustrating the sequential forms of the tube and spring assembly resulting from the steps of the method employed commencing with an empty tubular member and terminating with a finished contact soket.
  • FIGS. 9 and 10 are views generally similar to FIGS. 6 and 7 illustrating a second form of punch used for forming a second form of spring.
  • FIG. 11 is a longitudinal section of a socket with the second form of spring installed therein.
  • the finished contact socket 14 comprises an elongated tubular shell 15 comprising a pin receiving end 16 and a wire termination end 17.
  • the termination technique may be anything suitable, as for example a cup as illustrated which can be employed either as a solder pot or for crimping, to effect connection with a conductor C shown inphantom.
  • Initial formation of the tubular member 15 can be achieved by different optional methods or means, as for example either by drilling into a solid rod, or by employing a tubular shell having a cylindrical plane bore 21 (see FIG. 8).
  • the completed socket has a chamfered entrance ramp 13 formed by an internal bead for reception of a mating pin 19.
  • the minimum diameter of the chamfered ramp 18 is less than the basic circular internal diameter of the tube 16 by a measurement which slightly exceeds the thickness of a spring to be described.
  • the spring is of a ribbon leaf spring type and includes an elongated flatly bowed main portion 22 extending most of the length of the internal bore 21 of the tube 15, having a return bend 23 adjacent the inner end of the bore 21, and terminating with a relatively short, slightly bowed end section 24. As shown, both bows of the spring project convexly toward the axis of the tube.
  • the convex depth of the bowed portion 22 is sufficient to intrude into the cylindrical plane of the pin 19, so that when the pin is inserted into the socket this bowed portion of the spring will engage the contiguous surface of the pin and urge the pin diametrically toward the opposite internal surface of the tube 15.
  • the tube is preferably formed with an elongated indentation 25 in the nature of a crimp, which affords an extended surface 26 for cont-act with the pin.
  • This surface 26 preferably is arcuate in cross-section, conforming in general to the cross-sectional circumferential contour of the pin (see FIG. 3).
  • a unique and important feature of the spring itself' is its arcuate cross-sectional form of the sections 22 and 24 struck as generally illustrated in FIGS. 3 and 4. This form results from the means and method employed in fabricating and pushing the spring into position in the tube, and it offers the advantage of presenting a more end section 24.
  • the forward end 30 of the spring terminates short of an internal annular abutment face 31 afforded Iby the rearward sunface of the head which provides chamfered entrance ramp 118, so that when the bow 22 of the spring 20 is flattened by insertion of the pin 19 there is an escape area for the spring to enter.
  • This relationship of the forward end of the spring and the annular abutment 3 1 also serves as a secondary obstacle to prevent withdrawal of the spring when the pin is withdrawn from the socket.
  • the bend 23 and short section 24 of the spring provide the primary anchoring and locating means, the forward end of the section 24 being in relatively close proximity to the rear end of the indentation 25.
  • FIG. 8 The general steps performed in fabricating the socket are illustrated in FIG. 8.
  • first view we see a plain open ended tubular member with a contact end 51 and a wire termination end 52.
  • the spring 20 has been formed and pushed into position in the bore 21 of the tube.
  • the third view illustrates formation of the indentation 25 which has been pressed into the wall of the tube to provide the pin contact section 26.
  • the fourth and final view illustrates the result of a series of operations whereby the open pin end of the tube is spun or rolled in a head to form the cham'fered entrance ramp 18.
  • a roll of ribbon spring material such, for example, as stainless steel rib'bon 55, is fed past a cutting station 56 where a reciprocating knife 57 severs the fiat ribbon to free a length of steel ribbon 58 which is to form the spring.
  • This ribbon length 58 reposes in a guide slot 60 and rests against a stop 6-1 at a punching station generally designated 62.
  • a punch 63 adapted to advance and retract by any suitable power means and Ibeing guided in a punch guide 64 is advanced against the section of steel ribbon 5 8.
  • the punching station 62 includes a spring forming die 66 having a cylindrical cavity 67 formed with a countersink 68 for reception of the forward end of tube 50.
  • the tube is held in the axial position shown by any suitable means, as for example, a post 69, and against axial dislodgement by any suitable stop such as 72.
  • the punch is cylindrical in external form, and the clearance between the external diameter of the punch and the internal cylindrical diameter of the die cavity '67 is adequately close that as the punch 63 advances it draws the spring steelribbon 58 over the slightly rounded corner surface 70 of the die entrance and also (except at the return bend 23) squeezes the ribbon from its initial flat condition into an arcuate cross-section.
  • the center of the punch is substantially offset from the longituclinal center of the spring strip in order to provide the relatively long spring bow 22 and the relatively short
  • the diameter of the die cavity 67 is slightly less than that of the bore 21 in the tube, and they are axially aligned during formation of the spring.
  • the stroke of the punch is such that in one continuous forward movement the spring is formed by Ibeing drawn through the die 66 and is pushed into the open tube 50 until the bend 23 of the spring lodges against the inner end of the bore 21.
  • the metal of the spring strip is set with a bowed configuration by the drawing action, and although it is momentarily flattened while the punch is in the tube, upon withdrawal of the punch the spring will remain lodged in the tube 50, and the bow will assume its normal shape as generally illustrated in FIGS. 1 and 8.
  • the forward end 30 of the spring bow 22 and a rearward end portion 30a are in engagement with the wall of the tubular bore, and at least 'the end portions of the short bow 24 are seated against the tubular wall diametrically opposite the how 22.
  • An indentation or crimping punch is employed to form the indentation 25.
  • This punch may be of standard or conventional type but should 'be utilized in a manner to assure orientation of the socket tube with respect to the crimping tool jaw so that the indentation 25 is made substantially diametrically opposite the long bow 22 of the spring.
  • the entrance ramp 18 is spun or formed at the mouth of the tube. This may be accomplished by known metal moving means and methods.
  • FIGS. 9-11 The second form of spring and its relationship to the tubular shell are shown in FIGS. 9-11.
  • This form is produced by a punch 101 reciprocating in a die 66':g n erally similar to the die 66.
  • the punch 101 is formed with a bevelled forward end 102 shaped like a wedge. It imparts to the spring 100 relatively sharp angular bends 103 and 104 with a generally flat end leg 105.
  • the bend 103 between the long how 106 and :the end'leg is preferably acute, and the bend 104 between the end leg and the short bow 107 is preferably obtuse.
  • the operations of forming this spring and inserting it in the tubular shell, and thereafter effecting modifications in the shape of the shell are the same as described for the first form of spring.
  • the spring 100 may be used to particular advantage in the relatively larger sizes of contacts, such as 16 to 0.
  • the special configuration employed allows outside stresses, such as the mating pin contact, to be carried by all three segments of the spring member, namely the long how 106, the end leg 105, and the short how 107.
  • the rear end bearing of the spring occurs where the bend 103 seats at the junction 108 of the bore 21 with its end wall 109, and also where the bend 104 seats against the wall of the bore diametrically opposite but slightly forward of the junction point 108.
  • the method of fabricating a contact socket member comprising the steps of: providing a tubular socket memher with a bore open at the forward end and with a stop at the inner end, holding the open end of said tubular socket member in proximity to the discharge end of an open cylindrical die, positioning a strip of leaf spring material at the entrance end of the die, taking a punch having a diameter sufficiently close to the internal diameter of the die so that the annular space between punch and die is only slightly greater than the thickness of the leaf spring material, driving the punch against the leaf spring material in the direction of the die and thus forcing the leaf spring material through the die and re-fonming it into a longitudinally elongated loop having at least one relatively long bow extending convexly toward the axis of the die and with a transversely arcuate cross-section and a relatively short end section diametrically opposing the long bowed section, and continuing advancement of the punch with its end engaging the looped end of the spring in process of formation until the spring has been advanced into and seated in the bore
  • the method of fabricating a contact socket member comprising the steps of: providing a tubular socket memher with a bore open at the forward end and with a stop at the inner end, holding the open end of said tubular socket member in proximity to the dischar e end of an open cylindrical die, positioning a fiat strip of leaf spring material at the entrance end of the die with a relatively long section of the material extending beyond the axis of the die in one direction and a relatively short section of the material extending beyond the axis of the die in the opposite direction, driving a punch against the leaf spring material in the direction of the die and thus forcing the leaf spring material through the die and re-forming it into a longitudinally elongated loop having at least one relatively long bow extending convexly toward the axis of the die, and a relatively short end section diametrically opposing the long bowed section, continuing advancement of the punch with its end engaging the looped end of the spring in process of formation until the spring has been advanced into and seated in the bore of the tubular socket
  • the method of fabricating a contact socket member comprising the steps of: providing a tubular socket member with a bore open at the forward end and with a stop at the inner end, holding the open end of said tubular socket member in proximity to the discharge end of an 5 open cylindrical die, positioning a flat strip of leaf spring material at the entrance end of the die with a relatively long section of the material extending beyond the axis of the die in one direction and a relatively short section of the material extending beyond the axis of the die in the opposite direction, driving a punch against the leaf spring material in the direction of the die and thus forcing the leaf spring material through the die and reforming it into a longitudinally elongated loop having at least one relatively long bow extending convexly toward the axis of the die, and a relatively short end section diametrically opposing the long bowed section, continuing advancement of the punch with its end engaging the looped end of the spring in process of formation until the spring has been advanced into and seated in the bore of the tubular socket member, withdrawing the punch and

Landscapes

  • Manufacturing Of Electrical Connectors (AREA)
  • Measuring Leads Or Probes (AREA)
  • Springs (AREA)
  • Connecting Device With Holders (AREA)
US212776A 1961-04-27 1962-07-25 Method for making an electrical contact socket Expired - Lifetime US3243868A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US3123429D US3123429A (en) 1961-04-27 Electrical contact socket
FR884712A FR1316005A (fr) 1961-04-27 1962-01-12 Douille de contact électrique, appareil et procédé pour la fabriquer
DE19621440870 DE1440870B2 (de) 1961-04-27 1962-01-20 Elektrische kontaktbuchse sowie verfahren und vorrichtung zu deren herstellung
GB16047/62A GB999817A (en) 1961-04-27 1962-04-26 Electrical contact socket and apparatus for making the same
US212776A US3243868A (en) 1961-04-27 1962-07-25 Method for making an electrical contact socket

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10604461A 1961-04-27 1961-04-27
US212776A US3243868A (en) 1961-04-27 1962-07-25 Method for making an electrical contact socket

Publications (1)

Publication Number Publication Date
US3243868A true US3243868A (en) 1966-04-05

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Application Number Title Priority Date Filing Date
US3123429D Expired - Lifetime US3123429A (en) 1961-04-27 Electrical contact socket
US212776A Expired - Lifetime US3243868A (en) 1961-04-27 1962-07-25 Method for making an electrical contact socket

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US3123429D Expired - Lifetime US3123429A (en) 1961-04-27 Electrical contact socket

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US (2) US3243868A (de)
DE (1) DE1440870B2 (de)
GB (1) GB999817A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711922A (en) * 1971-03-02 1973-01-23 Amp Inc Assembling apparatus
US3714708A (en) * 1971-01-20 1973-02-06 M Brown Wire terminal making and assembling
US3762043A (en) * 1971-09-01 1973-10-02 Malco Mfg Inc Method and apparatus for mounting connector clips
US4209895A (en) * 1976-07-12 1980-07-01 International Telephone And Telegraph Corporation Method of making a socket contact
US5676571A (en) * 1996-08-08 1997-10-14 Elcon Products International Socket contact with integrally formed hood and arc-arresting portion
US5921803A (en) * 1995-02-17 1999-07-13 Yazaki Corporation Terminal for charging connector
DE102018208948A1 (de) * 2018-03-01 2019-09-05 Yazaki Corporation Verbindungsanschlussteil

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3370265A (en) * 1966-05-09 1968-02-20 Berg Electronics Inc Electrical connector
US3681744A (en) * 1970-06-16 1972-08-01 Berg Electronics Inc Circuit board socket
JPH0633659Y2 (ja) * 1990-02-21 1994-08-31 矢崎総業株式会社 雌型端子金具
JPH0494275U (de) * 1991-01-11 1992-08-17
US5147230A (en) * 1991-12-19 1992-09-15 General Motors Corporation Two piece electrical female terminal
DE4439105C1 (de) * 1994-11-02 1996-04-25 Kostal Leopold Gmbh & Co Kg Elektrische Steckverbindung
US5735716A (en) * 1996-09-18 1998-04-07 Yazaki Corporation Electrical connectors with delayed insertion force
DE19941515A1 (de) * 1999-08-31 2001-03-01 Interconnectron Gmbh Hochstromkontakt
CH704749B1 (fr) * 2007-09-05 2012-10-15 Preci Dip Sa Clip de contact.

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US964202A (en) * 1909-06-09 1910-07-12 Frithiof Bonnesen Mechanism for forming wire cramps and driving them into pasteboard and other material.
US1980170A (en) * 1928-10-22 1934-11-13 Electric Auto Lite Co Insulation process and machine
US1991467A (en) * 1933-09-22 1935-02-19 Wheeler Reflector Company Film socket filler
US2751872A (en) * 1951-10-12 1956-06-26 Western Electric Co Drawing and indenting die
US2761406A (en) * 1954-05-25 1956-09-04 Michael S Schnell Die for drawing sheet material
US2861324A (en) * 1954-12-16 1958-11-25 Jr Ferdinand Klumpp Method of making an electrical conductor terminal
US2926340A (en) * 1956-01-26 1960-02-23 Sperry Rand Corp Edge connectors
US2974400A (en) * 1952-03-11 1961-03-14 Frank J Sowa Method of making an insulated electrical connector
US2978800A (en) * 1955-11-30 1961-04-11 Sperry Rand Corp Memory plane wiring techniques

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US1677133A (en) * 1924-12-29 1928-07-17 Western Electric Co Method of and machine for feeding and working articles
US1890617A (en) * 1931-04-13 1932-12-13 Claude Neon General Advertisin Housing and mounting for the electrode chambers of luminescent tubes and the like
US2340360A (en) * 1940-09-14 1944-02-01 Alden Milton Machine and method for assembling electric wire terminals
US2563761A (en) * 1945-09-20 1951-08-07 Bendix Aviat Corp Socket connector having an indented solder wall
US2490317A (en) * 1946-10-23 1949-12-06 Ostrak Joseph Electrical connector
US2780792A (en) * 1953-08-18 1957-02-05 Harry W Earl Electrical connector
US2953765A (en) * 1957-11-25 1960-09-20 United Carr Fastener Corp Electrical connector for printed circuit board
US2969517A (en) * 1958-06-13 1961-01-24 Ind Electronic Hardware Corp Pin grip for printed circuit board
US2979689A (en) * 1959-01-13 1961-04-11 Jackson Anton Element for detachably coupling electrical contacts with a connector body

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US964202A (en) * 1909-06-09 1910-07-12 Frithiof Bonnesen Mechanism for forming wire cramps and driving them into pasteboard and other material.
US1980170A (en) * 1928-10-22 1934-11-13 Electric Auto Lite Co Insulation process and machine
US1991467A (en) * 1933-09-22 1935-02-19 Wheeler Reflector Company Film socket filler
US2751872A (en) * 1951-10-12 1956-06-26 Western Electric Co Drawing and indenting die
US2974400A (en) * 1952-03-11 1961-03-14 Frank J Sowa Method of making an insulated electrical connector
US2761406A (en) * 1954-05-25 1956-09-04 Michael S Schnell Die for drawing sheet material
US2861324A (en) * 1954-12-16 1958-11-25 Jr Ferdinand Klumpp Method of making an electrical conductor terminal
US2978800A (en) * 1955-11-30 1961-04-11 Sperry Rand Corp Memory plane wiring techniques
US2926340A (en) * 1956-01-26 1960-02-23 Sperry Rand Corp Edge connectors

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714708A (en) * 1971-01-20 1973-02-06 M Brown Wire terminal making and assembling
US3711922A (en) * 1971-03-02 1973-01-23 Amp Inc Assembling apparatus
US3762043A (en) * 1971-09-01 1973-10-02 Malco Mfg Inc Method and apparatus for mounting connector clips
US4209895A (en) * 1976-07-12 1980-07-01 International Telephone And Telegraph Corporation Method of making a socket contact
US5921803A (en) * 1995-02-17 1999-07-13 Yazaki Corporation Terminal for charging connector
US5676571A (en) * 1996-08-08 1997-10-14 Elcon Products International Socket contact with integrally formed hood and arc-arresting portion
DE102018208948A1 (de) * 2018-03-01 2019-09-05 Yazaki Corporation Verbindungsanschlussteil

Also Published As

Publication number Publication date
DE1440870B2 (de) 1971-06-24
GB999817A (en) 1965-07-28
DE1440870A1 (de) 1968-12-05
US3123429A (en) 1964-03-03

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