US3648213A - Electrical housing member - Google Patents

Electrical housing member Download PDF

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Publication number
US3648213A
US3648213A US31813A US3648213DA US3648213A US 3648213 A US3648213 A US 3648213A US 31813 A US31813 A US 31813A US 3648213D A US3648213D A US 3648213DA US 3648213 A US3648213 A US 3648213A
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United States
Prior art keywords
terminal
passageway
housing member
stop means
housing
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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
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US31813A
Inventor
Robert James Kobler
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TE Connectivity Corp
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AMP Inc
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Priority to US57258966A priority Critical
Application filed by AMP Inc filed Critical AMP Inc
Priority to US3181370A priority
Application granted granted Critical
Publication of US3648213A publication Critical patent/US3648213A/en
Priority to US05/520,572 priority patent/US3971613A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/667Organo-phosphorus compounds
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02Contact members
    • H01R13/10Sockets for co-operation with pins or blades
    • H01R13/11Resilient sockets
    • H01R13/115U-shaped sockets having inwardly bent legs, e.g. spade type
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42Securing in a demountable manner
    • H01R13/422Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means
    • H01R13/4223Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means comprising integral flexible contact retaining fingers
    • H01R13/4226Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means comprising integral flexible contact retaining fingers comprising two or more integral flexible retaining fingers acting on a single contact

Abstract

A dielectric housing for housing an electrical connector comprises a passageway in the housing in which the connector is to be disposed, the passageway providing integral lance means extending outwardly from surface means of the passageway for engagement with the electrical connector along one section thereof to prevent movement of the connector out of the passageway and the passageway and the connector providing stop means spaced from the integral lance means to limit movement of the connector in the passageway.

Description

United States Patent Kobler Mar. 7, 1972 [54] ELECTRICAL HOUSING MEMBER [72] Inventor: Robert James Kobler, Harrisburg, Pa.

[73] Assignee: AMP Incorporated, Harrisburg, Pa.

[22] Filed: Apr. 24, 1970 [21] Appl.No.: 31,813

Related US. Application Data [63] Continuation of Ser. No. 705,260, Jan. 26, 1968, which is a continuation-in-part of Ser. No. 572,589,

Aug. 15, 1966.

[52] US. Cl. ..339/59 R, 339/217 R [51] 1nt.Cl... H01r 9/16 [58] Field of Search ..174/87; 339/217, 59, 60, 94,

[56] References Cited UNITED STATES PATENTS 3,440,596 4/1969 Frompovicz ..339/49 R X 2,419,018 4/1947 Gudie ....339/2l7 X 2,675,529 4/1954 Klumpp, Jr. ..339/62 3,012,159 12/1961 Druesedow ..3l0/7l 3,065,448 11/1962 Hopkins et al..... .339/217 3,184,701 5/1965 Ellis ..339/5 3,246,281 4/1966 Cunningham ..339/ 1 76 FOREIGN PATENTS OR APPLICATIONS 557,587 5/1958 Canada 174/87 Primary ExaminerRichard E. Moore Attamey-Curtis, Morris and Safford, Marshall M. Holcombe, William Hintze, William J. Keating, Frederick W. Raring, John R. Hopkins, Adrian J. La Rue and Jay L. Seitchik [5 7] ABSTRACT A dielectric housing for housing an electrical connector comprises a passageway in the housing in which the connector is to be disposed, the passageway providing integral lance means extending outwardly from surface means of the passageway for engagement with the electrical connector along one section thereof to prevent movement of the connector out of the passageway and the passageway and the connector providing stop means spaced from the integral lance means to limit movement of the connector in the passageway.

4 Claims, 20 Drawing Figures PATENTEB MR 7 I972 SHEET 1 []F 5 A & m1 0N PATENTEDHAR 7 1972 ELECTRICAL uousmc MEMBER CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation of application, Ser. No. 705,260, filed Jan. 26, 1968, which in turn is a continuationin-part application of Ser. No. 572,589, filed Aug. 15, 1966.

This invention relates to electrical housing members and more particularly to electrical housing members having integral latch means to removably latch electrical terminals therein.

In order to secure an electrical terminal in a passageway of a housing, the general approach is to stamp out a resilient lance member from a section of the electrical terminal which mates 1 with an abutting surface in the passageway of the housing. The

lance member is prone to damage during handling of the terminal and also if the terminal is in strip form on a reel because the lance can be moved to a'position that would require it being pushed to its proper operative position. Stamping a lance member in a terminal increases the cost of the dies to make the terminal as well as increasing the cost of the terminal. Moreover, it would be desirable .to provide a standard terminal because some applications do not require a lance member.

An object of the invention is to provide a dielectric housing member in which an electrical terminal is secured thereby.

Another object of the invention is the provision of a housing member having an integral stiffly flexible member in a passageway in the housing member to engage an electrical terminal to secure the electrical terminal therein.

A further object of the invention is to provide a housing member having stop means at an entrance of a passageway to limit movement of an electrical terminal in one direction and a stiffly flexible member in the passageway to engage the terminal to limit movement of the terminal in a direction opposite to the one direction.

An additional object of the invention is'the provision of a housing member having a passageway provided with means to limit movement of an electrical terminal in both directions within the passageway and means to bias the electrical terminal in alignment with the means to limit movement of the terminal in one direction. I I

As still further object of the invention is, to provide a terminal housing member having spaced stop means therein to secure an electrical terminal therein and the stop means are not susceptible to any damage.

Other objects and attainments of the present invention will become apparent to those skilled in the art upon a reading of the following detailed description when taken in conjunction with the drawings in which there are shown and described illustrative embodiments of the invention; it is to be understood, however, that these embodiments are not intended to be exhaustive nor limiting of theinvention but are given for purposes of illustration in order that others skilled in the art may fully understand the invention and the principles thereof and the manner of applying it in practical use so that they may modify it in various forms, each asmay be best suited to the conditions of a particular use. a

The foregoing and other objects are achieved by a preferred embodiment of an electrical connector assembly comprising a dielectric housing and an electrical terminal, the dielectric housing having at least one passageway extending therethrough, first stop means located adjacent one end of the passageway and' second stop means integrally extending outwardly from a surface of the passageway and spaced from the first stop means, the electrical terminal having a contact section with one end disposed adjacent the first stop means to limit movement of the electrical terminal in one direction, the second stop means defining a stiffly flexible member directed toward the first stop means and having one end engaging another end of the contact section to bias the terminal toward another surface opposite the first-mentioned surface of the passageway and another end about which the stiffly flexible member flexes, the second stop means limiting movement of the electrical terminal in a direction opposite to the one direction.

In the drawings:

FIG. lis an exploded, perspective and partially sectioned view of a housing member and an electrical terminal securable therein;

FIG. 2 is a front elevational view of an electrical housing member with an electric terminal in place therein;

FIG. 3 is a view taken along lines 3-3 of FIG. 1 and with an electrical terminal about to be positioned therewithin;

FIGS. 4 and 5 are views similar to FIG. 3 showing the electrical terminal partially inserted within the housing member and fully inserted within the housing member and fully inserted within the housing member in a secured position therein;

FIG. 6 is a view taken along lines 6-6 of FIG. 5; alternative embodiment of the housing member;

FIG. 7 is a front elevational view of an alternative embodiment of the housing member;

FIG. 8 isa view taken along lines 8-8 of FIG. 7; a further embodiment of the housing member;

FIG. 9 is a front elevational view of a further embodiment of the housing member;

FIG. 10 is a view taken along lines 10-10 of FIG. 9; an additional embodiment of the housing member;

FIG. 11 is a front elevational view of an additional embodiment of the housing member;

FIG. 12 is a View taken along lines 12-12 of FIG. 11; of FIG. 12;

FIG. 13 is a view taken along lines 13-13 of FIG. 12;

FIG. 14 is a view similar to FIG. 11 but showing an electrical terminal secured within the housing member;

FIG. 15 is a perspective, partially sectioned and exploded view of a still further embodiment of the housing member;

FIG. 16 is a front elevational view of the housing member of FIG. 15;

FIG. 17 is a view taken along lines 16-16 of FIG. 16;

FIG. 18 is a longitudinal cross-sectional view of a still additional embodiment of the housing member;

FIG. 19 is a view taken along lines 19-19 of FIG. 18; and

FIG. 20 is a front end view of FIG. 18.

Turning now to the drawings and especially FIGS. 1 through 6, a housing member H is illustrated which is made from any suitable dielectric material in accordance with conventional molding techniques preferably of the straight-action, injection-molding type. The dielectric material from which the housing member is made has stiffly flexible characteristics and is preferably nylon or the like. The front of the housing member has inwardly directed sections 1 extending outwardly from top section 2 of the housing member toward bottom section 3. Inwardly directed sections 4 extend outwardly from bottom section 3 toward top section 2 and sections 1 and 4 are in alignment with each other. The inner ends of sections 1 and 4 are spaced from each other to define an entrance 5 for housing member H. The outer surfaces of sections 1 and 4 at entrance S are beveled to facilitate the insertion of an electrical terminal member of the tab type within entrance 5.

As can be discerned from FIGS. 1 and 2, sections 1 and sections 4 are spaced from each other and do not extend across the front of the housing member. Sections 1 and 4 extend inwardly from side section 6 and top and bottom sections 2 and 3. Entrance 5 is in communication with a passageway 7 which extends through housing member I-I. Passageway 7 is slightly larger in cross section at its rear end to accommodate conductor members of different diameters.

An integral projection 8 extends outwardly from an inner surface 9 of top section 2. Projection 8 has stiffly flexible characteristics and is directed toward a front of housing member I-I. Projection 8 includes a stepped area defining engaging surfaces 10 and 11. Projection 8 is movable as a unitary structure about the area connecting projection 8 to inner surface 9 which area comprises an area of flection. The width of projection 8 is equal to the spacing between inwardly directed sections 1.

Inwardly directed sections 1 and 4 comprise forward stop means to limit movement of an electrical terminal in one direction within housing member H and projection 8 comprises an inner or rear stop means to limit the movement of the electrical terminal in another direction within the housing member.

An electrical terminal T, which is preferably of the type disclosed in U.S. Pat. No. 2,774,951, is securable within housing member H by the forward and rear stop means. Electrical terminal T comprises a ferrule section 12 which is preferably secured to the conductive portion and insulation portion of conductor member 13 by conventional crimping techniques. The electrical terminal also includes a contact section 14 which comprises a floor portion 15 and curved side portions 16 which curve back over floor portion 15 and the free ends of side portions 16 to terminate above floor portion 15 in spaced relationship therefrom as illustrated in FIG. 1. Floor portion 15 has a slot 15' therein.

In assembly, electrical terminal T is inserted within housing member H through the rear entrance as illustrated in FIG. 2. As the electrical terminal is moved along passageway 7, the tops of side portions 16 engage projection 8 and move same as a unitary member about its flection area toward inner surface 9, as illustrated in FIG. 3. Electrical terminal T is moved further along passageway 7 until the forward end of the contact section engages the forward stop means comprising sections 1 and 4 and integral projection 8 moves back toward its normal position of rest as illustrated in FIG. 2 with engaging surface engaging the tops of side portions 16 and engaging surface 11 is disposed adjacent the rear end of contact section 14 as illustrated in FIG. 4.

The resilient characteristics of projection 8 causes projection 8 to bias the electrical terminal towards surface 17 of bottom section 3. Thus, the forward and rear stop means of housing member H secure the electrical terminal in position within the housing member and the contact section in alignment with entrance 5 so that the electrical terminal can readily receive a mateable electrical terminal member within the contact section, the beveled surfaces of sections 1 and 4 facilitate the insertion of the electrical terminal member within entrance 5 and the contact section of electrical terminal T. Sections 4 are spaced closer together than sections 1 in order to accommodate an extension 18 which is part of a section that connected the electrical terminal to an adjacent electrical terminal in strip form.

With the electrical terminals secured in position within the housing member by the securing means, the terminal can withstand extremely high extraction forces on the terminal member since the force driving the inner end of the contact section against engaging surface 11 tends to move projection 8 in a direction away from surface 9, and, as the force increases, projection 8 bends about an area between the point of connection of projection 8 to surface 9 and the free end of the projection and the projection assumes an arcuate configuration with the free end being directed toward surface 9. This increases the retention force of the inner stop means. Surfaces 19 which have the same width as sections 1 and extend inwardly within passageway 7 and as part of side sections 6 and top section 2 limit the upper movement of the electrical terminal in its secured position within the housing member. A rounded projection 20 extends outwardly from the bottom surface of projection 8 adjacent engaging surface 11 and this projection serves to ride over slot to prevent engaging surface 11 from engaging the leading surface of the slot in the event that the electrical terminal is inserted within the housing member in an inverted position.

FIGS. 7 and 8 illustrate an alternative embodiment of the invention. In this embodiment, housing member Ha is similar to the housing member of FIGS. 1 through 6 except that integral projections 21 are spaced from each other and are in alignment with the legs of a U-shaped opening in the front of the housing member as illustrated in FIG. 7. Projections 21 are similar to projection 8 and they operate in the same manner to engage respective side portions 16 of the electrical terminal.

Centrally located and inwardly directed section 22 and inwardly directed sections 23 form the forward stop means of the housing member, and surface 24 limits the upper movement of the electrical terminal within the housing member. Projections 21 may be interconnected by a section extending therebetween and which terminates forward of the crimping ferrule. Housing member Ha of FIGS. 7 and 8 is useful in conjunction with electrical terminals having a high crimp height which would not be usable in the embodiment of FIGS. 1 through 6.

FIGS. 9 and 10 are directed to a further embodiment of a housing member Hb and this housing member is similar to the embodiment of FIGS. 7 and 8 except that centrally located and inwardly directed section 25 includes a rearwardly directed extension 26 engageable against the tops of side portions 16 of the electrical terminal to bias the electrical terminal in a direction toward the bottom surface of the passageway and stiffly flexible hooks 27 engage the inner ends of side portions 16 and define the inner stop means.

FIGS. 11 through 14 illustrate a still further embodiment of the invention which illustrates a housing member He comprising a stiffly flexible integral projection 28 which biases the electrical temiinal against the upper surface of the passageway and maintains the arcuate parts of side portion 16 of the electrical terminal into locking alignment with stop surfaces 29 which define the inner stop means. Inwardly directed sections 30 form the forward stop means of housing member. Spaced projections 31 are located on the upper surface of projection 28 to decrease the frictional engagement between projection 28 and the bottom surface of the electrical terminal.

In order to remove the terminal from the housing member in the embodiment of FIGS. 1 through 6, a probe (not shown) is inserted within the housing member of entrance 5 to engage surface 10 and move projection 8 until surface 11 is clear of the inner end of the contact section, force supplied to conductor member l3-then permits the terminals to be removed from the housing member. Bifurcated probes would have to be used to free projections 21 and hook members 27 from engagement with the inner end of the contact section in the embodiments of FIGS. 7 and 8 and 9 and 10. A probe is disposed between space projections 31 to move projection 28 so that the inner end of the contact section of the terminal is moved free of surfaces 29in the embodiment of FIGS. 11 through 14 to remove the terminal from the housing member.

FIGS. 15-17 illustrate a still further embodiment of housing member Hd which is to receive and secure therein a round socket terminal 32. Housing member Hd has equally spaced sections 33 at the front end which are the front stop means. Surfaces 34 extend rearwardly from sections 33 and these surfaces define a terminal-receiving area in which contact section 35 is disposed and maintained in alignment with the front entrance of the housing member. Spaced projections 36 are located in alignment with respective recesses 37 in the front end of the housing member and projections 36 operate in the same manner as projection 8, FIGS. 1-6, so that one of the projections engages the inner end of the contact section thereby obviating any orientation between the housing member and terminal. The angular distance between the projections is such that it is smaller than the engageable area above the ferrule member of the terminal.

Housing member He is illustrated by FIGS. 18 through 20 and it is a still additional embodiment of the invention. Housing member He has a passageway 40 extending therethrough, inwardly directed projections 41 being located at one end. Projections 41 are spaced from each other to provide an entrance through which a tab connector is inserted for mateable engagement with the receptacle section of electrical terminal T as well as providing forward stop means to limit movement of terminal T within the housing member. Projections 41 are provided with outer bevelled surfaces to facilitate insertion of the tab connector within the passageway.

The side surfaces of passageway 40 are provided with positioning sections 42 which extend toward the longitudinal axis of the housing member and terminate so that the receptacle section of the terminal can be positioned therebetween to limit sidewise movement of the terminal. Sections 42 at each location along each side surface are spaced from each other as illustrated in FIGS. 18 and 20.

Integral projections 43 extend outwardly from each side surface rearwardly from respective sections 42 and positioned in the space therebetween. Projections 43 have stepped sections 44 at the free ends thereof which are engaged by the receptacle section to prevent the terminal from being removed from the housing member.

Projections 43 operate in the same manner as the integral resilient lance means heretofore described, therefore no discussion of the operation thereof is deemed to be necessary. Depression of the stiflly flexible projections toward their respective side surfaces permits removal of the terminal from the housing member.

An important feature of housing member He is the fact that terminal T can be inserted in the housing member in one posi tion or 180 therefrom. Another feature is that stepped sections 44 engage the sides of the receptacle section to maintain the receptacle section within the area between positioning sections 42 when the terminal is subjected to sidewise movement.

The rear surfaces of projections 43 are radiused at the corners in order to facilitate the insertion of the terminal with the housing member. Also, projections 43 are movable in planes normal to each other which is an advantage so as to accommodate terminals having nonsymmetrical configurations.

The housing members may be provided with a plurality of passageways in accordance with the teaching of the invention to secure a plurality of electrical terminals therein.

It will, therefore, be appreciated that the aforementioned and other desirable objects have been achieved; however, it should be emphasized that the particular embodiments of the invention, which are shown and described herein, are intended as merely illustrative and not as restrictive of the invention.

The invention is claimed in accordance with the following:

I. A housing member for housing an electrical terminal therein, said terminal including wire barrel and generally rectangular receptacle portions, said housing comprising a dielectric body having a longitudinal passageway of generally rectangular configuration extending therethrough defining a longitudinal axis, said passageway including a forward area in which the receptacle portion of the terminal is to be secured, and a rear area receiving said wire barrel portion, integral first stop means extending into but not blocking said passageway from the foremost end thereof of said forward area of said passageway and adapted to engage the foremost portion of said receptacle portion of the terminal when said terminal is in position in said forward area for limiting movement of said terminal in the direction of insertion from the rear area to the forward area, two oppositely disposed integrally molded, stiffly flexible lances axially rearwardly spaced from said first stop means projecting into said passageway from opposing side surfaces of said passageway and extending forwardly along side sections of said passageway adjacent said forward area so as to be freely movable toward and away from said side surfaces, said lances defining second stop means for engagement by the rearmost portion of said receptacle portion of the terminal to limit movement of the terminal in a rearward direction of withdrawal, said lances each having stepped sections at the free ends thereof comprising first and second faces which are respectively parallel and perpendicular to said axis for engaging, respectively, side and rear end portions of said receptacle portion to maintain said receptacle portion in said forward area upon the terminal being subjected to sidewise and rearward forces.

2. A housing member according to claim 1 wherein said passageway is further defined by planar top and bottom surfaces parallel to said axis and spaced so as to engage said wire barrel portion therebetween, and wherein each side surface of said passageway includes two relatively offset planar surfaces with the planar surfaces in said forward area limiting sidewise movements of said receptacle portion.

3. A housing member according to claim 2 wherein each of said stiffly flexible lances comprises a finger, each said finger having a third face defining a camming surface, each said camming surface extending from respective said side surfaces at obtuse angles and into path of insertion of the terminal, said passageway otherwise being free of obstructions to prevent insertion of the terminal from said rear area forwardly to said first stop means.

4. A housing member according to claim 3 wherein said fingers are symmetrically located relative to said axis thereby allowing the terminal to be inserted in an inverted position.

Claims (4)

1. A housing member for housing an electrical terminal therein, said terminal including wire barrel and generally rectangular receptacle portions, said housing comprising a dielectric body having a longitudinal passageway of generally rectangular configuration extending therethrough defining a longitudinal axis, said passageway including a forward area in which the receptacle portion of the terminal is to be secured, and a rear area receiving said wire barrel portion, integral first stop means extending into but not blocking said passageway from the foremost end thereof of said forward area of said passageway and adapted to engage the foremost portion of said receptacle portion of the terminal when said terminal is in position in said forward area for limiting movement of said terminal in the direction of insertion from the rear area to the forward area, two oppositely disposed integrally molded, stiffly flexible lances axially rearwardly spaced from said first stop means projecting into said passageway from opposing side surfaces of said passageway and extending forwardly along side sections of said passageway adjacent said forward area so as to be freely movable toward and away from said side surfaces, said lances defining second stop means for engagement by the rearmost portion of said receptacle portion of the terminal to limit movement of the terminal in a rearward direction of withdrawal, said lances each having stepped sections at the free ends thereof comprising first and second faces which are respectively parallel and perpendicular to said axis for engaging, respectively, side and rear end portions of said receptacle portion to maintain said receptacle portion in said forward area upon the terminal being subjected to sidewise and rearward forces.
2. A housing member according to claim 1 wherein said passageway is further defined by planar top and bottom surfaces parallel to said axis and spaced so as to engage said wire barrel portion therebetween, and wherein each side surface of said passageway includes two relatively offset planar surfaces with the planar surfaces in said forward area limiting sidewise movements of said receptacle portion.
3. A housing member according to claim 2 wherein each of said stiffly flexible lances comprises a finger, each said finger having a third face defining a camming surface, each said camming surface extending from respective said side surfaces at obtuse angles and into path of insertion of the terminal, said passageway otherwise being free of obstructions to prevent insertion of the terminal from said rear area forwardly to said first stop means.
4. A housing member according to claim 3 wherein said fingers are symmetrically located relative to said axis thereby allowing the terminal to be inserted in an inverted position.
US31813A 1966-08-15 1970-04-24 Electrical housing member Expired - Lifetime US3648213A (en)

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US57258966A true 1966-08-15 1966-08-15
US3181370A true 1970-04-24 1970-04-24
US05/520,572 US3971613A (en) 1966-08-15 1974-11-04 Electrical housing member

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US05/520,572 Expired - Lifetime US3971613A (en) 1966-08-15 1974-11-04 Electrical housing member

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BE (1) BE702399A (en)
DE (2) DE6603106U (en)
ES (1) ES344087A1 (en)
FR (1) FR1533862A (en)
GB (1) GB1139729A (en)
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Also Published As

Publication number Publication date
DE6603106U (en) 1969-08-07
GB1139729A (en) 1969-01-15
NL151853B (en) 1976-12-15
ES344087A1 (en) 1968-09-16
FR1533862A (en) 1968-07-19
DE1615629B1 (en) 1972-09-07
NL6710519A (en) 1968-02-16
BE702399A (en) 1968-01-15
JPS5130270B1 (en) 1976-08-31
US3971613A (en) 1976-07-27
SE328927B (en) 1970-09-28

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