US3806858A - Electrical service duct - Google Patents

Electrical service duct Download PDF

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Publication number
US3806858A
US3806858A US00365743A US36574373A US3806858A US 3806858 A US3806858 A US 3806858A US 00365743 A US00365743 A US 00365743A US 36574373 A US36574373 A US 36574373A US 3806858 A US3806858 A US 3806858A
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US
United States
Prior art keywords
cover
service duct
moulding
electrical service
block
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
US00365743A
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English (en)
Inventor
J Larsile
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.)
Technilec SARL
Original Assignee
Technilec SARL
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Filing date
Publication date
Application filed by Technilec SARL filed Critical Technilec SARL
Application granted granted Critical
Publication of US3806858A publication Critical patent/US3806858A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H01R25/16—Rails or bus-bars provided with a plurality of discrete connecting locations for counterparts
    • H01R25/164—Connecting locations formed by flush mounted apparatus

Definitions

  • ABSTRACT independent insulated electrical leads Insulating blocks are mounted in the base at the location of each branch connection, which blocks have passageways each receiving a lead, and mortices are provided in each insulating block on at least two 5 1 passageways for receiving the ends of pins which are [56] References cued to connect with the conductors of the leads and which pins are carried by connectors which pass through prearranged apertures in the cover. Correspondence is 339/23 339/23 assured between the apertures in the cover and the 339/23 mortices on the insulating blocks.
  • the invention relates to electrical service ducts of the kind enclosing conductors with detachable branches on the conductors, with novel possibilities for the distribution and the derivation of the electrical current passing through the said service duct.
  • the invention applies in particular, but not exclusively, to a moulding fitted with grooves enclosing insulated wires, with connections by needle-type connectors, of the kind described in French Pat. specification No. 2,097,279.
  • a moulding of rectangular cross section which is closed by a cover, the plinth of the moulding comprising parallel continuous grooves each intended to receive a conductor having a definite function such as: phase, neutral, earth or protection conductor.
  • a preferred way of making of such a plinth is an extrusion of a termo-plastic material.
  • the cover comprises two types of apertures, one for the passage of needle-shaped connector pins piercing the insulation of the conductors, the other for maintaining in position connector housings which are fitted with a screw stirrup to force the needles to penetrate into the insulation of the conductors and to straddle the core of the conductors.
  • the forming of the moulding plinth by extrusion only permits the use of a termo-plastic material, of which the thermal and electrical arc resistance is not considered adequate according to certain regulations to perform the function of a shield between the live parts, which are the needles, and the wall to which the service duct is fixed.
  • the existance of parallel grooves from one end to another of the service duct does not allow crossing or any repetition or termination or the conductors at a definite point of the said service duct. The use of such duct is then too restricted, being to uniform in a fairly complex installation.
  • the invention overcomes these disadvantages. It provides means for realising installations, for example with three, five or more conductors, with various branching combination for the supply of a series of power outlet points not all having the same function or the same sup- SUMMARY
  • An electrical service duct according to the invention is in the form of a moulding with a removable cover intended to receive unstripped insulated leads which are contacted by pin-type connectors passing through the cover form branch connectors at intervals.
  • the conductors are supported by insulating blocks, wherein the blocks in the moulding at the location of each branch, and the surface of each block facing the cover is formed with aplurality of parallel passageways for the insulated leads which are engaged therein, mortices on at least two of the said passageways receive the ends of the pins which contact the conductors engaged in said passageways, the pins being introduced through apertures in the cover, and positioning means between the cover and each of the blocks ensure correspondence of the apertures with the positions of the mortices on the blocks.
  • FIG. 1 is an exploded perspective view of a moulding with an insulating block, two conductors and a cover,
  • FIG. 2 is a partly sectioned lateral view made along the line 11-11 of FIG. 1, ofthe insulating block fitted in a service duct and pinching a conductor,
  • FIG. 3a and 3b are detailed views of means of pinching conductors, which are integral parts of the block,
  • FIG. 4 is a first branching diagram of one application of the invention.
  • FIG. 5 is a second branching diagram of another application.
  • the plinth of a moulding comprises a bottom 1 and two external edges 2, each edge shaped with an internal bead 3 which presents, on the side opposite the bottom, a ramp 4.
  • fins 5 are extruded which fins are interrupted at certain intervals, leaving-a space 6 between adjacent fins.
  • Each of the fins is spaced from the corresponding edge 2 so as to leave a narrow empty channel 7, the function of which will be explained hereafter.
  • the fins, such as 5 is of lesser depth than the edge 2 of the moulding so as to serve as parallel support for a cover 8 of the moulding.
  • the plane cover 8, preferably of a thermo-setting material, has bevels 9 on both its sides which are complementary to the ramps 4 of the beads 3 of the moulding, this permitting the cover 8 to click into position by elastic deformation of the edges 3, the cover being thus securely fixed between the beads 3 and the edges of the fins 5.
  • the moulding itself may be of a termo-plastic resin, but it could be also of thin'aluminium with an insulating internal covering.
  • an insulating support block 10 In the space 6 in the moulding betweenthe fins, there is housed an insulating support block 10.
  • the block 10 is of suitable width to fit between the internal faces of the edges 2 of the moulding.
  • the block has on its sides two inverse ramps of shallow inclination 13 and 14 intended to displace the beads 3 and then to hook behind them when the block is depressed.
  • the block carries on its front part and on each bottom and top side, a pair of noses 15 forming an extension of the second ramp 14.
  • the cover 8 has corresponding notches 16 on each side on its edges.
  • the cover 8 can be pressed towards the moulding where the block 10 is already embedded and that the notches 16 by engaging in the noses 15 constrain the block to position itself exactly with respect to the cover; i.e. with reference to the apertures 17 of the said cover in which connector pins are intended to engage.
  • the exact positioning of the block 10 is possible if the interspace 6 between the fins 5 is slightly greater than the length of the block 10.
  • the connector not shown is of a type described in the French Pat. specification published as No. 2,097,279 and it is fitted with needle-shaped pins passing into the holes 17, and with fixing hooks which engage in apertures 18, which are slots more widely spaced with respect to the general axis than the pins of the connector.
  • the channels 7 delimited by the fins are arranged to receive the ends of the hooks engaging in the slots 17, by virtue of which the hooks are insulated from the conductors 25 placed in the moulding.
  • the conductors 25 are housed in the groove 19 formed between two pairs of fins, fixing holes 20 for fixing the moulding on a wall being formed in the floor of the groove 19.
  • the notches l6 on each side of the edges of the cover may be located in pairs at different intervals, which defines, an irreversible position of the cover, by cooperation with the noses 15 of the block.
  • the block has grooves 11 which are recessed with mortices 21, so that the needle-shaped pins which have pierced the insulation of a conductor arranged in the groove 11 can pass beyond into the said mortice.
  • a thin rib 22 divides the mortice 21, joining the groove bottoms 11. 7
  • FIG. 2 illustrates a means of blocking a conductor 25 housed in a groove 11 of the block 10.
  • the fin which delimits the channel 7 already mentioned is made of a somewhat resilient material and it terminates in a flange 5a turned towards the axis of the moulding.
  • the arrangement of the block is such that the edge 11a of the groove 11 is co-incidence with the face 5b of the tin, the said face being directed towards the interior of the groove 19.
  • the flange 5a pinches the conductor 25.
  • the block comprises a housing groove 24 at its lateral ends, the housing groove being formed with two noses 24a, 24b capable of resiliently pinching the conductor 25.
  • the groove 12 may also have simple beads 26 of rounded shape, the deformation for introducing the conductor being solely of the insulating sheath of the conductor.
  • FIG. 4 is a first example of a branching diagram, with the use of support blocks 10 according to that of FIG. 1.
  • This lay-out enables power outlet points to be arranged which are supplied either directly or through a switch.
  • Three blocks 10a, 10b, 100 have been housed between the pairs of fins 7 which conform to the arrangement of FIG. 1 and of FIG. 2.
  • the conductor 27 Starting from a supply point P and a fuse F, the conductor 27 passes into the upper mortice 21a of the block 10a, then it descends in the groove which follows and passes into the groove 12b of the block 10b and it rises again into the following groove and passes into the upper mortice 21!: of the block 100.
  • a second conductor connected to the fuse F passes through a switch 28 to supply the conductor 29, which passes firstly into the central groove 12a the block 1011, then rises again crossing the conductor 27 and passes into the mortice 21b of the block 10b. Then it descends again, crossing the conductor 27, and passes into the central groove 120 of the block 100.
  • a third conductor 30, which is the neutral, passes directly into the bottom mortices of the three blocks, 10a, 10b, 10c.
  • FIG. 5 shows a service duct having a double distribution capacity.
  • the blocks used each comprise five grooves, three of which have mortices and are symmetrical with respect to the axis, whereas the two outer grooves have not mortice.
  • the central mortice is staggered to the right with respect to the other two.
  • the central conductor extends axially and directly along the three central grooves and mortices.
  • a supply point P is connected to two fuses G and H.
  • the first fuse G is connected to the upper conductor 31, which passes into two direct upper grooves of the blocks 10d, l0e, and is then inclined and passes into the upper mortice of the block 10f.
  • the second fuse H is connected to a conductor 32, which extends in a straight line into the upper mortices of the blocks 10d and l0e and then stops.
  • a neutral N is divided into two conductors 33, 34, of which the first conductor 33 passes into the lower mortices of the blocks 10d and 102 and then stops, while the second conductor 34 passes directly into the lower grooves of the blocks 10d, l0e, then rises again and passes into the lower mortices of the block 10f.
  • the central conductor P is the protection conductor relating to all the power outlet points.
  • An electrical service duct in the form of a moulding comprising a base with a removable cover intended to accommodate several independent insulated electrical leads each having a single conductor, and which have not previously been bared, into which duct there are connected at intervals pin connectors passing through pre-arranged apertures in thecover, the base containing insulating blocks for supporting the leads, wherein the insulating blocks are mounted in the base at the location of each pin connection and the surface of each block facing the cover is formed with passageways each accommodating the whole of one of the insulated leads, mortices are provided in each insulating block on at least two passageways for receiving the ends of pins which are to make contact with the conductors which pins are introduced through apertures in the cover, and complementary positioning means are provided on each insulating block and on the cover to assure correspondence between the apertures in the cover and the mortices on the insulating blocks.
  • stops are fins parallel to the edges of the moulding which define an axial space for housing and permitting crossing of the conductors.
  • An electrical service duct according to claim 10 wherein the blocks are fitted with square mortices intersecting the passageways, each mortice being separated centrally by a thin partition so as to serve as a support for a conductor which is to be engaged by needle connectors.
  • passageway of the block is a semicircular groove which is formed with its edge more remote from the axis of the moulding coinciding with the face of the fin facing towards the axis of the moulding, which is resilient and is fitted with a retaining nose prolonging the groove so as to pinch the conductor housed in the groove.
  • An electrical service duct according to claim 13 wherein a groove in the block is provided on the edges of the transverse section of the block with retaining noses adapted to pinch a conductor in the said groove.

Landscapes

  • Installation Of Bus-Bars (AREA)
  • Details Of Indoor Wiring (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Insulating Bodies (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
US00365743A 1972-06-13 1973-05-31 Electrical service duct Expired - Lifetime US3806858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7221156A FR2188336B1 (th) 1972-06-13 1972-06-13

Publications (1)

Publication Number Publication Date
US3806858A true US3806858A (en) 1974-04-23

Family

ID=9100086

Family Applications (1)

Application Number Title Priority Date Filing Date
US00365743A Expired - Lifetime US3806858A (en) 1972-06-13 1973-05-31 Electrical service duct

Country Status (8)

Country Link
US (1) US3806858A (th)
JP (1) JPS5331549B2 (th)
BE (1) BE800631A (th)
CA (1) CA984813A (th)
ES (1) ES192304Y (th)
FR (1) FR2188336B1 (th)
GB (1) GB1406136A (th)
IT (1) IT984100B (th)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307435A (en) * 1980-06-27 1981-12-22 Allan Ullman Radio frequency signal and power distribution duct
US5336849A (en) * 1992-01-17 1994-08-09 The Wiremold Company Raceway assembly for power and communications conductors
US5357053A (en) * 1992-03-04 1994-10-18 George Manaras Safety baseboard molding for concealing indoor domestic wiring
EP0807999A1 (de) * 1996-05-17 1997-11-19 Siemens Aktiengesellschaft Energieverteilungssystem
US6491535B1 (en) * 2001-10-01 2002-12-10 Pent Assemblies, Inc. Electrical distribution system with keyed channel arrangement
US20050221646A1 (en) * 2004-02-27 2005-10-06 Brian Evilsizer Elongated electrical outlet
US20080029301A1 (en) * 2005-01-13 2008-02-07 The Wiremold Company Modular raceway with base and integral divider
US20080041623A1 (en) * 2005-01-13 2008-02-21 The Wiremold Company Downward facing receptacle assembly for cable raceway
US20100258686A1 (en) * 2009-04-08 2010-10-14 Airbus Operations Limited Cable raceway

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2457584A1 (fr) * 1979-05-21 1980-12-19 Telemecanique Electrique Plinthe electrique
JPS58117721A (ja) * 1981-12-30 1983-07-13 Matsushita Electric Ind Co Ltd 波形整形回路

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2313452A (en) * 1940-09-10 1943-03-09 Pierce John B Foundation Multiple conductor electric wiring unit
US2383014A (en) * 1940-09-13 1945-08-21 Pierce John B Foundation Electricity conductor unit
US3546360A (en) * 1967-07-26 1970-12-08 North Western Specialities Ltd Electrical wiring system principally for buildings
US3634809A (en) * 1969-02-21 1972-01-11 Telemecanique Electrique Electrical distribution assembly intended to form prefabricated electric conduits
FR2097279A5 (th) * 1970-07-01 1972-03-03 Bauer Jean Marie

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2313452A (en) * 1940-09-10 1943-03-09 Pierce John B Foundation Multiple conductor electric wiring unit
US2383014A (en) * 1940-09-13 1945-08-21 Pierce John B Foundation Electricity conductor unit
US3546360A (en) * 1967-07-26 1970-12-08 North Western Specialities Ltd Electrical wiring system principally for buildings
US3634809A (en) * 1969-02-21 1972-01-11 Telemecanique Electrique Electrical distribution assembly intended to form prefabricated electric conduits
FR2097279A5 (th) * 1970-07-01 1972-03-03 Bauer Jean Marie

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4307435A (en) * 1980-06-27 1981-12-22 Allan Ullman Radio frequency signal and power distribution duct
US5336849A (en) * 1992-01-17 1994-08-09 The Wiremold Company Raceway assembly for power and communications conductors
US5357053A (en) * 1992-03-04 1994-10-18 George Manaras Safety baseboard molding for concealing indoor domestic wiring
EP0807999A1 (de) * 1996-05-17 1997-11-19 Siemens Aktiengesellschaft Energieverteilungssystem
US6491535B1 (en) * 2001-10-01 2002-12-10 Pent Assemblies, Inc. Electrical distribution system with keyed channel arrangement
US20050221646A1 (en) * 2004-02-27 2005-10-06 Brian Evilsizer Elongated electrical outlet
US7128585B2 (en) * 2004-02-27 2006-10-31 Brian Evilsizer Elongated electrical outlet
US20080029301A1 (en) * 2005-01-13 2008-02-07 The Wiremold Company Modular raceway with base and integral divider
US20080041623A1 (en) * 2005-01-13 2008-02-21 The Wiremold Company Downward facing receptacle assembly for cable raceway
US7456366B2 (en) 2005-01-13 2008-11-25 The Wiremold Company Modular raceway with base and integral divider
US7544900B2 (en) 2005-01-13 2009-06-09 The Wiremold Company Modular raceway with base and integral divider
US7741568B2 (en) 2005-01-13 2010-06-22 The Wiremold Company Downward facing receptacle assembly for cable raceway
US20100258686A1 (en) * 2009-04-08 2010-10-14 Airbus Operations Limited Cable raceway

Also Published As

Publication number Publication date
ES192304U (es) 1974-09-01
DE2328236A1 (de) 1974-01-03
CA984813A (en) 1976-03-02
FR2188336B1 (th) 1976-08-06
IT984100B (it) 1974-11-20
GB1406136A (en) 1975-09-17
JPS4962992A (th) 1974-06-18
BE800631A (fr) 1973-10-01
ES192304Y (es) 1975-01-01
DE2328236B2 (de) 1976-03-18
JPS5331549B2 (th) 1978-09-02
FR2188336A1 (th) 1974-01-18

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