US3777300A - Safety outlet and plug device - Google Patents

Safety outlet and plug device Download PDF

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Publication number
US3777300A
US3777300A US00125777A US3777300DA US3777300A US 3777300 A US3777300 A US 3777300A US 00125777 A US00125777 A US 00125777A US 3777300D A US3777300D A US 3777300DA US 3777300 A US3777300 A US 3777300A
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US
United States
Prior art keywords
conductor
strip
plug
channel
outlet
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
US00125777A
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English (en)
Inventor
Villemeur P De
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.)
A GREGOIRE AND BARILLEAU ETS
Original Assignee
A GREGOIRE AND BARILLEAU ETS
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Filing date
Publication date
Application filed by A GREGOIRE AND BARILLEAU ETS filed Critical A GREGOIRE AND BARILLEAU ETS
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Publication of US3777300A publication Critical patent/US3777300A/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
    • H01R25/00—Coupling parts adapted for simultaneous co-operation with two or more identical counterparts, e.g. for distributing energy to two or more circuits
    • H01R25/14—Rails or bus-bars constructed so that the counterparts can be connected thereto at any point along their length

Definitions

  • This safety current outlet and plug device is preferably of the continuous type, i.e. constituting a kind of skirt ing-board along a wall or the like.
  • the electric contact between the prongs of the cap, plug or'connector and the electric conductors of the current outlet is obtained by causing the elastic deformation of the prongs consisting to this end.
  • a current outlet may be obtained wherein any direct access to anyone of its conductors is positively prevented when using a rigid member, so that a safety current outlet is obtained.
  • both members may have a certainvresiliency in order'to conjugate their elastic deformations.
  • the current outlet may be so designed that no direct access can-be had-to anyone of'its electric conductors, so that asafetycurrent outlet is obtained, the considerable permissible deformation -of said rblades enabling them to reach these conductors otherwise inaccessible to conventionalplug bladesand also to any otherobject unless it is extremelyflexible;besides, the moderate thickness of these bladespermits' of reducing to less than one millimeterthewidth of the access slots to the conductorsincorporatedinthe outlet,sothatthe safety is increased correspondingly.
  • Eachplug-blade may beso designed that its deformation resulting from its introduction into the female member is also attended by the locking of the blade within the outlet; alternatively, this blade may be designed to constitutethe femalemember of another currentv outlet adaptedto cooperatewith-theblade of another cap or plug.
  • a double blade which consists of a loop having a relatively short radius of curvature and two arms of which the portions extending on this side of the loop engage with a sufficient pressure the walls of .a constriction formed in said female member and adaptedto produce a' relatively pronounced deformation of said arm portions.
  • the current conductor may consist of a thin copper section, for example less than 1 millimeter thick, havingacross-sectional contigurationmatching that of the cavityprovided beyond the access slot of the current -outlet, so as to-bear against, and closely accommodate the contour of, said bottom, after this conductor'has been introduced'through said access slot.
  • FIG. 1 is a cross-sectional view showing on a relatively largescale a first form of embodiment with the blades of the plug or cap about to be inserted into the current outlet;
  • FIG. 2 is a fragmentaryperspective view showing a short section of the current supply conductor before the insertion thereof into the current outlet;
  • FIG. 3 is a view similar'to FIG. 1 but showing the cap blades fully engaged into the current outlet;
  • FIGS. 4 and'S illustrate a modified form of embodiment wherein the blades of the cap or connector are double-or looped, before and after their engagement into the current outlet, respectively;
  • FIG. 6 is a sectional view showing a current outlet and cap assembly, the two component elements of the device being separated from each other;
  • FIG. 7 is a view similar toFIG. 6 butshowing the two component elements'in their assembled or contact position
  • FIG.:8 is a perspective view showing a blade utilized in the male member
  • FIGS. 9 and l0 are similar viewsof modified forms of embodimentof this blade.
  • these channels 2,3 having a substantially curved configuration are inclined at a considerable angle in relation to the front face 4 of the strip or outlet, and the width of their access slots 5, 6 is less than I millimeter; just beyond these slots 5, 6 the concave wall 7 of channels 2, 3 comprises an inner shoulder 8; at a point intermediate this shoulder 8 and the bottom 9 the convex and concave walls 10, 7 of each channel comprise other shoulders 11 and 12, as shown; electric conductors 13 for example of the type illustrated in FIG.
  • these conductors comprise to this end thin conducting metal blades forming at one end a loop 14 of same radius as said channel bottom 9 and having two arms 15, 16 each formed with an outflaring concave portion 17, 18 corresponding in shape to the curved intermediate portion of said channels 2, 3; at their opposite ends these blades comprise longitudinal edges 19,20.
  • this thin section can easily be introduced through the access slots 5, 6 of the current outlet illustrated in FIG. 1, and the elasticity of their arms l5, 16 is sufficient for causing them to resiliently engage the wall of the rear portions of said channels, so that the longitudinal edges 19, 20 fit closely against the shoulders 11,12 acting as convenient means for safely locking the conductors in their operative position.
  • the plug cap or connector illustrated in FIGS. 1 and 2 comprises a small plate 21 of plastic material in which the rear portions 22,23 of a pair of very thin blades 24,25 of conducting and elastic metal are embedded; to this end, these rear ends are looped as shown at 26, 27 and engage a pair of bores 28, 29 provided to this end in said plate 21 and opening laterally; at a short distance from the front face 30 of plate 21 these blades 24,25 are bent to constitute a pair of resilient locking projections 31,32.
  • the device is complete in the form described hereinabove, provided that the distance between the bores 28 and 29 corresponds to that prescribed for the blades or prongs of a conventional and standard cap, which can be introduced into these bores for engaging the loops 26, 27 of blades 24,25 and thus provide the desired electrical connections.
  • the device operates as follows: When the cap or connector is approached to the front face 4 of the skirting-board, and the two blades 24,25 are firstly inserted into the access slots and 6 of the pair of channels 2 and 3 of said striking-board, then pushed home until the front face 30 of the plug cap engages the registering front face 4 of said striking-board, the blades 24,25 are subjected to a strong elastic deformation as a consequence of their engagement with the concave face 7 of said channels, and the outer ends of these blades subsequently ensures an efficient elastic contact with the electric conductor 13, and notably by resiliently engaging its conducting arm simultaneously, the projections or loops 31 and 32 having undergone a deformation as a consequence of their passage through the access slots 5 and 6, and immediately after this passage the blades 24,25 expand again and are thus locked behind the shoulders 8.
  • the modified form of embodiment illustrated in FIGS. 4 and 5 differs from the preceding one in that there is a direct access to the electric conductors so that the elastic deformation to be exerted on the blades for reaching the conductors in the first form of embodiment is suppressed; thus, in order to exert a similar elastic pressure against these conductors, the blades consist of a loop 35 and two arms 36, 37, the blade thickness being thus reduced and being even inferior to 0.2 millimeter; the electric conductors may consist, as in the preceding case, of a conducting metal section 38 having a cross-sectional shape corresponding substan tially to that of the section element of the preceding form of embodiment, except for the fact that section 38 is symmetrical.
  • the access slot 39 is also symmetrical with two shoulders 40, 41 adapted to retain and lock the ends 42,43 of the two arms 44, 45 of metal sections 38;
  • the double blade may also comprise within the plastic base plate 46 a pair of half-loops 47 and 48 which are fitted in bores 49 and 50 and adapted to constitute, in the case of a connector, the female members engageable by the plugs or prongs of a conventional cap.
  • each blade 51 comprises a pressed portion 55 which, as clearly shown in FIG. 7, constitutes a locking element adapted to retain the con nector or cap 56 in its electric contact position with respect to the conductor of cap 57; the rear portion of each blade 51 shown more particularly in FIG.
  • a partly cylindrical half-shell 58 having an outflaring opening 59 on the other side, it comprises an extension 60 having substantially the same width, which is bent on itself transversely through 180 about a fold line 61, the edge of this extension being adapted to constitute another partly cylindrical half-shell 62 complementary to and registering with the first half-shell 58, and also formed with an outflared inlet opening 63.
  • the lateral portion 76 of blade 51 comprises only one outflared rear edge 77 adapted to facilitate the contact with the prong when the latter is introduced into the connector; in addition, a lateral portion 78 of part-cylindrical configuration may be provided for constituting a complementary contact line with the prong.
  • blades thus shaped are fitted in any connector such as the one illustrated at 56 they can constitute the female member of an outlet, adapted to receive the prongs 64 of a cap (not shown), even if these prongs differ considerably from one another.
  • the current outlets 57 may consist of skirting boards formed with longitudinal slots 65 of a width preferably inferior to l millimeter so as to allow just the corrugated portions 52,53, 54 of blades 51 therethrough and permit their ingress into channels 66 having a considerable upward and inward inclination, and limited on one side by a surface 67 having its concavity directed outwards and on the other side by a surface 68 having its concavity directed inwards; these surfaces" 67 and 68 are provided with shoulders 69 and 70 respectively permitting the locking of U-shaped electric conductors 71 of which the arm 72 having an outwardly directed concavity is considerably longer than the arm 73.
  • each channel 66 thereof may comprise on the side opposite to its surface 67 a small chamber 75; if desired, the slots 65, instead of being formed by extrusion, may be obtained subsequently by a simple sawing operation.
  • skirting-boards may conveniently be manufactured as a continuous strip, by extrusion, by utilizing a conventional extruder.
  • FIGS. 6 and 7 also show that for each electric conductor of the current outlet the connector comprises a single metal member acting jointly as a male member and as a female member; this single metal member is secured and retained within the connector without resorting to any metal fastening member, in contrast to the conventional design of hitherto known connectors; if the connector casing consists of a two-piece structure and if these pieces are assembled by mutual snap-fitting engagement, their arrangement is such that this snapfitting action ensures at the same time the locking in position of these single metal members corresponding each to one of the current outlet lines.
  • the current outlet means is made of a thin plastic section having a front face, such as a skirting board, at least two curved channels of generally arcuate configuration, formed with a closed bottom, which communicate each on the side opposite said closed bottom with the exterior through a thin slot of a width of the order of one millimeter and preferably less, formed through the front face of said section, a conductor comprising a thin strip of resilient metal lining the bottom of each channel, said strip having the shape of a narrow U with the ends of the outer lips slightly outflared, shoulders formed in each one of the opposite faces of said bottom of said channel to limit a widened portion of said bottom for receiving said conductor, said shoulders acting in turn as stop means to the ends of the U-sectioned conductor so as to retain same in their recess when said conductor has been inserted into the relevant channel through said slot, the plug means comprising each a thin strip of elastic metal about less than 1 millimeter thick, shaped to a generally ar
  • the current outlet means is made of a thin plastic section having a front face, such as a skirting board, at least two curved channels of generally arcuate configuration, formed with a closed bottom, which communicate each on the side opposite said closed bottom with the exterior through a thin slot of a width of the order of .one millimeter and preferably less, formed through the front face of saidsection, a conductor comprising a thin strip of resilient metal lining the bottom of each channel, said strip having the shape of a narrow U with the ends of the outer lips slightly outflared, shoulders formed in each one of the opposite faces of said bottom of said channel to limit a widened portion of said bottom for receiving said conductor, said shoulders acting in turn as stop means to the ends of the U-sectioned conductor was to retain same in their recess when said conductor has been inserted into the relevant channel through said slot, the plug means comprising each a thin strip of elastic metal about less than one millimeter thick, shaped to a generally
  • each plug strip comprises at least one pressed portion (32,55) and the front face(e) of said current outlet comprises a shoulder(8) beyond its slot(6, 65,) said pressed portion and shoulder being such that when said plug strips are inserted home into the channels of the current outlet through said slot said plug means are releasably locked in position in said current outled.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US00125777A 1970-03-19 1971-03-18 Safety outlet and plug device Expired - Lifetime US3777300A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7009881A FR2082554A5 (de) 1970-03-19 1970-03-19
FR7101960A FR2122729A6 (de) 1970-03-19 1971-01-21

Publications (1)

Publication Number Publication Date
US3777300A true US3777300A (en) 1973-12-04

Family

ID=26215622

Family Applications (1)

Application Number Title Priority Date Filing Date
US00125777A Expired - Lifetime US3777300A (en) 1970-03-19 1971-03-18 Safety outlet and plug device

Country Status (10)

Country Link
US (1) US3777300A (de)
JP (1) JPS561750B1 (de)
BE (1) BE764389A (de)
CH (1) CH543821A (de)
DE (1) DE2113449C3 (de)
ES (1) ES389694A1 (de)
FR (2) FR2082554A5 (de)
GB (1) GB1329921A (de)
LU (1) LU62810A1 (de)
NL (1) NL170478C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4627679A (en) * 1983-11-21 1986-12-09 Establissements A. Gregoire & Barilleau Continuous-accessibility electrical conduits
US6234851B1 (en) 1999-11-09 2001-05-22 General Electric Company Stab connector assembly
US20040235334A1 (en) * 2001-11-12 2004-11-25 Koum-Hwuan Kim Safety outlet and plug

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1153510B (it) * 1982-05-04 1987-01-14 Guido Zucchini Struttura a zoccolo per la distribuzione di energia elettrica a altri servizi similari in locali di uso civile
GB2159343A (en) * 1984-03-17 1985-11-27 Simplex Ge Ltd Electricity distribution installation
FR2588713A1 (fr) * 1985-10-16 1987-04-17 Foucault Gerard Dispositif pour l'alimentation et la fixation instantanee de sources tres basse-tension
GB8814238D0 (en) * 1988-06-15 1988-07-20 Leisure Charging Systems Wiring systems
DE4104885C2 (de) * 1991-02-18 1993-11-04 Braun Ag Elektrogeraet

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US434509A (en) * 1890-08-19 huntingto n
US2192899A (en) * 1938-01-15 1940-03-12 George S Edmonson Linear molded article for housing electrical conductors
US2210625A (en) * 1938-03-23 1940-08-06 Arthur L Kuhlman Self-locking plug
US2213293A (en) * 1937-12-01 1940-09-03 Us Rubber Co Electrical connector and spring contact therefor
US2283398A (en) * 1933-04-11 1942-05-19 Harry R Van Deventer Electric circuit molding
US2441461A (en) * 1945-11-19 1948-05-11 Wayne Anthony Electric utility connection
US2669632A (en) * 1949-04-16 1954-02-16 Gen Electric Bus duct switch
US2671887A (en) * 1951-03-19 1954-03-09 Rudyard K Wellman Continuous electrical outlet
US3012217A (en) * 1959-02-09 1961-12-05 Pantin Luis Electric outlet
US3032739A (en) * 1957-01-23 1962-05-01 Tuchel Ulrich Contact assembly
US3171703A (en) * 1962-07-09 1965-03-02 Essex Wire Corp Power plug

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US434509A (en) * 1890-08-19 huntingto n
US2283398A (en) * 1933-04-11 1942-05-19 Harry R Van Deventer Electric circuit molding
US2213293A (en) * 1937-12-01 1940-09-03 Us Rubber Co Electrical connector and spring contact therefor
US2192899A (en) * 1938-01-15 1940-03-12 George S Edmonson Linear molded article for housing electrical conductors
US2210625A (en) * 1938-03-23 1940-08-06 Arthur L Kuhlman Self-locking plug
US2441461A (en) * 1945-11-19 1948-05-11 Wayne Anthony Electric utility connection
US2669632A (en) * 1949-04-16 1954-02-16 Gen Electric Bus duct switch
US2671887A (en) * 1951-03-19 1954-03-09 Rudyard K Wellman Continuous electrical outlet
US3032739A (en) * 1957-01-23 1962-05-01 Tuchel Ulrich Contact assembly
US3012217A (en) * 1959-02-09 1961-12-05 Pantin Luis Electric outlet
US3171703A (en) * 1962-07-09 1965-03-02 Essex Wire Corp Power plug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Metals Handbook, Copper Alloy Castings p. 974, 1961. *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4627679A (en) * 1983-11-21 1986-12-09 Establissements A. Gregoire & Barilleau Continuous-accessibility electrical conduits
US6234851B1 (en) 1999-11-09 2001-05-22 General Electric Company Stab connector assembly
US20040235334A1 (en) * 2001-11-12 2004-11-25 Koum-Hwuan Kim Safety outlet and plug

Also Published As

Publication number Publication date
CH543821A (fr) 1973-10-31
DE2113449B2 (de) 1975-05-07
FR2082554A5 (de) 1971-12-10
GB1329921A (en) 1973-09-12
NL170478C (nl) 1982-11-01
FR2122729A6 (de) 1972-09-01
NL7103728A (de) 1971-09-21
DE2113449C3 (de) 1975-12-18
NL170478B (nl) 1982-06-01
BE764389A (fr) 1971-08-16
JPS561750B1 (de) 1981-01-14
ES389694A1 (es) 1974-03-01
DE2113449A1 (de) 1971-10-07
LU62810A1 (de) 1971-08-24

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