US3702456A - Electrical terminal block for interconnecting a plurality of conductors - Google Patents

Electrical terminal block for interconnecting a plurality of conductors Download PDF

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Publication number
US3702456A
US3702456A US3702456DA US3702456A US 3702456 A US3702456 A US 3702456A US 3702456D A US3702456D A US 3702456DA US 3702456 A US3702456 A US 3702456A
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wire
terminal
means
terminal block
stack
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George Allen Patton
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AMP Inc
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AMP Inc
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements for establishing connections among stations for the purpose of transferring information via these connections
    • H04Q1/02Constructional details
    • H04Q1/14Distribution frames
    • H04Q1/141Details of connexions between cable and distribution frame
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact and means for effecting or maintaining such contact
    • H01R4/24Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/2445Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
    • H01R4/2462Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives the contact members being in a slotted bent configuration, e.g. slotted bight
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R9/00Connectors and connecting arrangements providing a plurality of mutually insulated connections; Terminals or binding posts mounted upon a base or in a case; Terminal strips; Terminal blocks
    • H01R9/22Bases, e.g. strip, block, panel
    • H01R9/226Bases, e.g. strip, block, panel comprising a plurality of conductive flat strips providing connection between wires or components
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q1/00Details of selecting apparatus or arrangements for establishing connections among stations for the purpose of transferring information via these connections
    • H04Q1/02Constructional details
    • H04Q1/14Distribution frames
    • H04Q1/142Terminal blocks for distribution frames
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/34Combined diverse multipart fasteners
    • Y10T24/3427Clasp
    • Y10T24/3439Plural clasps
    • Y10T24/344Resilient type clasp
    • Y10T24/3444Circular work engageable

Abstract

Electrical Terminal Block comprises an insulating base member having a stack of individual clamping blocks mounted thereon. Individual terminals devices are contained in the stacks between adjacent clamping blocks and extend laterally on each side of the stack. The ends of the terminal devices are provided with terminal means in the form of inwardly extending slots which are adapted to receive insulated wires. The preferred form of the invention may also include means on each terminal device for trimming the end portion of a wire concomitantly with insertion into the slot. Devices of this type are commonly used in the communication industry for permanently or semi-permanently interconnecting a multiplicity of conductors from a plurality of multi-conductor cables.

Description

United States Patent Patton [451 Nov. 7, 1972 [541 ELECTRICAL TERMINAL BLOCK FOR INTERCONNECTING A PLURALITY OF CONDUCTORS [72] lnventor: George Allen Patton, Pfafftown,

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

[22] Filed: April 7, 1971 [211 App]. No.: 132,038

Related U.S. Application Data [63] Continuation-impart of Ser. No. 805,160,

March 7, 1969, Pat. No. 3,617,983.

[52] U.S. Cl. ..339/198 B, 24/81 F, 339/98 [51] Int. Cl. ..H0lr 9/00, H01r 9/06 [58] Field of Search ..339/95, 96, 97, 98, 99, 198, 339/256; 24/81 F, 130, 264

[56] References Cited UNITED STATES PATENTS 3,617,983 11/1971 Patton ..339/98 3,521,221 7/1970 Lenaerts et a1 ..339/97 P 2,098,321 ll/l937 Trepton ..339/198 R 3,308,422 3/1967 Boysen ..339/198 R 3,181,109 4/1965 Snider ..339/198 P FOREIGN PATENTS OR APPLICATIONS 970,343 9/1958 Germany ..339/198 I-I Primary Examiner-Marvin A. Champion Assistant Examiner-Robert A. l-lafer Attorney-Curtis, Morris & Safford, William J. Keating, Ronald D. Grefe, Gerald K. Kita, Frederick W. Raring, Jay L. Seitchik, John R. Flanagan and Allan B. Osborne [57] ABSTRACT Electrical Terminal Block comprises an insulating base member having a stack of individual clamping blocks mounted thereon. Individual terminals devices are contained in the stacks between adjacent clamping blocksand extend laterally on each side of the stack.

- The ends of the terminal devices are provided with terminal means in the form of inwardly extending slots which are adapted to receive insulated wires. The preferred form of the invention may also include means on each terminal device for trimming the end portion of a wire concomitantly with insertion into the slot. Devices of this type are commonly used in the communication industry for permanently or semi-permanently interconnecting a multiplicity of conductors from a plurality of multi-conductor cables.

6 Claims, 3 Drawing Figures PATENTEDm 1m: 3.702.456

sum 10F 2 m lull. I I A ELECTRICAL TERMINAL BLOCK FOR INTERCONNECTING A PLURALITY OF CONDUCTORS BACKGROUND OF THE INVENTION This application is a continuation in part of application Ser. No. 805,160 filed Mar. 7, 1969, now US. Pat. No. 3,617,983, which is hereby incorporated by reference in its entirety.

The instant invention is directed to the achievement of an improved terminal block for making permanent electrical connections between a relatively large number of conductors and which permits changing of the interconnections when required. The invention is herein disclosed as incorporated into a so-called line terminal block of the type used in the telephone industry in main and intermediate distribution frames although other uses for the invention will be apparent to those skilled in the art.

Line terminal blocks are used in very large numbers in the telephone industry in main and intermediate distribution frames for forming interconnections among a plurality of individual cables, and jumpers each of which contains a plurality of pairs of electrical conductors. When the conductors of a plurality of cables and jumpers are interconnected on a line terminal block, the interconnections made are permanent in the sense that they are never broken until additional cables are brought into the distribution frame and/or some cables are removed from service as where the telephones are removed from a building being dismantled or telephones are added to, or taken from, the service supplied to a portion of a building. A suitable line terminal block should, therefore, be capable of interconnecting a relatively large number of electrical conductors. Furthermore, while the interconnections made are permanent in the sense that they may not be disturbed for years, it should alsobe possible to change the connections when required. Finally, and because of the complexity of the wiring in the telephone industry, it is desirable that the technician or installer making the interconnections should be able to do so rapidly and with a minimum possibility of error.

In the past, line terminal blocks have been provided with a plurality of simple terminal posts to which the individual conductors may be soldered or on which the conductors may be wrapped in the known manner. Soldering of the conductors on a line terminal block is time consuming and subsequent changes to the wiring of the block is also time consuming because of the necessity of removing soldered wires from their terminals. Wrapped type connections may avoid the necessity of soldering (although they are sometimes soldered after being wrapped) but do not provide as high a wiring density in the block as is desired. Furthermore, it is necessary, with many types of wrapping tools, to remove the insulation from a conductor before it can be wrapped onto a post.

The instant invention is directed to the achievement of an improved terminal block capable of forming interconnections among a large number of electrical conductors. It is an object of the invention to provide an improved terminal block which is suitable for use in the communications industry as a line terminal block. A further object is to provide a terminal block which is capable of interconnecting a relatively large number of conductors in a very limited space. A still further object is to provide a terminal block having terminals therein to which insulated wires can be connected without stripping of the insulation. A still further object is to provide a terminal block having terminals therein which have means for trimming the end portions of the conductors when they are connected to the terminals. A still further object is to provide a modular type terminal block which can be assembled with varying numbers of terminals depending upon the needs of an immediate situation.

These and other objects of the invention are achieved in a preferred embodiment thereof which is briefly described in the foregoing abstract, which is described in detail below and which is shown in the accompanying drawings, in which:

FIG. 1 is a perspective view of a typical line terminal block in accordance with the principles of the invention.

FIG. 2 is a top plan view of the terminal block of FIG. 1 illustrating the manner in which the conductors are led to opposite sides of the block and connected to the terminals in the block.

FIG. 3 is a fragmentary perspective view of an individual clamping block and illustrating the manner in which the Terminals are mounted in the clamping block.

The herein disclosed embodiment of the invention 2 comprises a terminal block composed of a rectangular base plate 4 and a stack generally indicated at 6 of individual clamping modules 8 containing a plurality of individual terminal devices 14 arranged in orderly rows and columns in the stack. The stack 6 is made up of an elongated base member 10, a cap member 12, which may be identical to base member 10, and a plurality of intermediate clamping blocks 8 between the base and cap members. It will be understood that, within limits, any desired number of clamping blocks may be provided in the stack to supply the necessary number of terminal devices 14 to interconnect a specific number of conductors. The base and cap blocks l0, l2 and the clamping blocks 8, are secured to the base member 4 by means of suitable fasteners 22 which extend through the stacked blocks and into the base member. The base member and the individual blocks stacked thereon may be of any suitable insulating material such as a phenylene oxide resin (Noryl) which can be molded inexpensively.

Under normal circumstances, a large number of terminal blocks 2 are mounted on a mounting frame and openings 16 are accordingly provided at the ends of the base member 4 for the accomodation of suitable mounting screws. The individual conductors 20 are led toward an individual terminal block from the rearward side of the base member 4 and extend through elongated openings 18 on the base member on each side of the stack 6. The conductors are then dressed towards the appropriate terminal devices 14 and connected thereto in a manner described below.

Referring now to FIG. 3, each terminal device 14 comprises an intermediate channel-shaped shank portion 24 having terminals 26 on its ends. The terminal on the right in FIG. 3 comprises the first, second and third plate-like sections 28, 30 and 32 which are formed by reverse bends 34 and 36 in the end of the terminal as shown. The final plate-like section 32 does not extend to the end of the terminal portion of the device but only partially towards the end so that it provides a transversely. extending edge 40 which functions as a shearing edge when a wire is inserted into the terminal. The wire receiving means on each terminal on the end of the terminal device comprises inwardly directed slots 38 which extend into the reverse bend 34 and towards the second bend 36 in both plate sections 28, 30. It should also be noted that these slots extend beyond the transversely extending shearing edge 40.

When a wire is connected to a terminal on the ends of one of these terminal devices 14, it is positioned with its axis extending transversely of the end portion of the terminal and in alignment with one of the slots. It is then pushed into the slot until the edges of the slot penetrate the insulation of the wire and establish electrical contact with the conducting core of the wire. At the same time, the end portion of the wire which extends beyond the shearing edge 40 is severed from the wire by this shearing edge in cooperation with a suitable insertion tool. The above identified application Ser. No. 805,160 shows one form of insertion tool and application Ser. No. 66,050 filed Aug. 21, 1970 shows a more advanced type of hand tool which can be used on terminals of the type shown in the drawing.

Each of the clamping blocks 8 is provided with transversely extending slots 42 on one of its longitudinal sides the width of which is substantially equal to and slightly less than the distances between the outwardly directed surfaces of the sidewalls of the shank portions 24 of the terminal. Additionally, a central boss 44 is provided in each slot 42 and a central hole 46 is provided in the web portion of each terminal device. The terminal devices 14 are thus assembled to the clamping block by merely locating the holes 46 of the terminal devices in alginment with the bosses 44 of the slots 42 and forcing the terminals inwardly as shown in FIG. 3.

When the clamping blocks are secured to each other should be noted that the end portion 26 of the terminal devices 14 will extend obliquely with respect to the intermediate shank portion 24, an orientation which has been found to be advantageous to the technician or installer when he is interconnecting a plurality of conductors by inserting the wires thereof into the slots of the terminal device. v

In conventional wiring practice, the technician first leads the wires through the appropriate one of the openings 18 in the base member 4 and locates them with their axes extending between two adjacent rows of terminaldevices and with their end portion extending forwardly as shown in FIG. 1. He then selects the appropriate wires and locates them in a slot 38 in the desired terminal. He may prefer to position several wires in slots of the terminals before he performs the final insertion operation with a suitable hand tool as disclosed in application Ser. No. 66,050. When the wire is inserted, the end portion thereof which extends beyond the shearing plate section 32 is severed by the insertion tool in cooperation with the shearing edge 40 of the terminal as explained above.

' As also explained in application Ser. No. 805,160 it is sometimes desirable to lead a wire from one terminal device 14 to which it is connected to a second or even a third terminal device. To this end, slots 48 may be provided in some of the shearing members or shearing plates 32 of some of the terminals. Upon insertion of a wire into a slot in the plate sections 28, 30 of the terminal shownon the left in FIG. 3, the end portion of the wire will then be forced into the slot 48 of the plate section 32 of this terminal. This wire will thus not be severed or trimmed and it can be led from this terminal to a further terminal in the stack.

What is claimed is:

1. A terminal block for interconnecting a plurality of insulated wires, said terminal block comprising:

an insulating base means, a plurality of clamping blocks on said base means, said blocks being positioned one on top of the other to form a stack,

a plurality of terminal devices, each of said terminal devices comprising a shank portion having wire connecting means on its ends,

each of said wire connecting means comprising a metal plate having one reverse bend therein to form a pair of parallel plate sections connected by a-first bight, at least one slot means extending axially from an end of said connecting means into said first bight and into said plate sections to define aligned slots in said plate sections and a gap in said bight, at least one of said aligned slots having a first root portion of a width less than the diameter of the conducting core of said wire, the width of said slot adjacent to said gap being sufficient to permit movement of said wire laterally of its axis through said gap and into said first root portion to cause the edges of said first root portion to penetrate the insulation of said wire and establish electrical contact with said conducting core of said wire,

said shank portions of said terminal devices being clamped between adjacent blocks of said stack and extending from the sides of said stack whereby wires extending towards opposite sides of said stack can be connected to each other by inserting said wires into the said slot means of one of said terminal devices.

2. A terminal block as set forth in claim 1 wherein said ends of said terminal devices are laterally enlarged relative to said shank portions, said slot means on each end of each of said terminal devices comprising a plurality of parallel slots.

3. A terminal block as set forth in claim I wherein the other said aligned slot includes a second root portion, said second root portion having a width greater than the width of said first root portion and less than the diameter of said insulation of said wire whereby, upon movement of said wire laterally of its axis through said gap and into said second root portion the edges of said second root portion penetrate said insulation to mechanically secure said wire in said wire connecting means.

4. A terminal block as set forth in claim 1 wherein said wire connecting means includes a third plate section and connected by a second bight to one of said pair of plate sections, said second bight being on the opposite side of said plate sections from the side on which said first bight is located, said third plate section having a width as measured between said bights, which is less 6. A terminal block as set forth in claim 1 wherein said terminal devices are disposed within said stack of said terminal block so that a plane passing through said slot means is perpendicular to said base means and to said stack whereby, said slot means are generally aligned toward said base means to minimize the length of each said wire required for it to be extended from said base means to said wire connecting means.

Claims (6)

1. A terminal block for interconnecting a plurality of insulated wires, said terminal block comprising: an insulating base means, a plurality of clamping blocks on said base means, said blocks being positioned one on top of the other to form a stack, a plurality of terminal devices, each of said terminal devices comprising a shank portion having wire connecting means on its ends, each of said wire connecting means comprising a metal plate having one reverse bend therein to form a pair of parallel plate sections connected by a first bight, at least one slot means extending axially from an end of said connecting means into said first bight and into said plate sections to define aligned slots in said plate sections and a gap in said bight, at least one of said aligned slots having a first root portion of a width less than the diameter of the conducting core of said wire, the width of said slot adjacent to said gap being sufficient to permit movement of said wire laterally of its axis through said gap and into said first root portion to cause the edges of said first root portion to penetrate the insulation of said wire and establish electrical contact with said conducting core of said wire, said shank portions of said terminal devices being clamped between adjacent blocks of said stack and extending from the sides of said stack whereby wires extending towards opposite sides of said stack can be connected to each other by inserting said wires into the said slot means of one of said terminal devices.
2. A terminal block as set forth in claim 1 wherein said ends of said terminal devices are laterally enlarged relative to said shank portions, said slot means on each end of each of said terminal devices comprising a plurality of parallel slots.
3. A terminal block as set forth in claim 1 wherein the other said aligned slot includes a second root portion, said second root portion having a width greater than the width of said first root portion and less than the diameter of said insulation of said wire whereby, upon movement of said wire laterally of its axis through said gap and into said second root portion the edges of said second root portion penetrate said insulation to mechanically secure said wire in said wire connecting means.
4. A terminal block as set forth in claim 1 wherein said wire connecting means includes a third plate section and connected by a second bight to one of said pair of plate sections, said second bight being on the opposite side of said plate sections from the side on which said first bight is located, said third plate section having a width as measured between said bights, which is less than the width of said first named plate sections, said third plate section being cooperable with an insertion tool to shear a wire extending past said third insertion of said wire into said slots.
5. A terminal block as set forth in claim 4 wherein said third plate includes at least one opening therein in alignment with said root portions of said slots in said first named plate sections to permit connection of an intermediate portion of a wire to said wire connecting means.
6. A terminal block as set forth in claim 1 wherein said terminal devices are disposed within said stack of said terminal block so that a plane passing through said slot means is perpendicular to said base means and to said stack whereby, said slot means are generally aligned toward said base means to minimize the length of each said wire required for it to be extended from said base means to said wire connecting means.
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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772638A (en) * 1972-07-13 1973-11-13 Ark Les Switch Corp Wire connector
US3878603A (en) * 1972-08-21 1975-04-22 Leo Anker Jensen Method and apparatus for the solderless splicing of multi-lead cables
US4021093A (en) * 1975-02-28 1977-05-03 Hego Electric G.M.B.H. Connection frame for electrical installations
US4136920A (en) * 1976-10-28 1979-01-30 Siemens Aktiengesellschaft Wire clamping element
DE2804478A1 (en) * 1978-01-31 1979-08-02 Krone Gmbh Apparatus and method for manufacturing a brazed, screwed and stripless contact to a fixed terminal, in particular for the telecommunication line technology
US4171857A (en) * 1977-06-07 1979-10-23 Krone Gmbh Cleat connector for insulated wires
FR2453583A1 (en) * 1979-03-31 1980-10-31 Ferranti Ltd Connection circuit modular elements
US4279460A (en) * 1978-03-30 1981-07-21 Krone Gmbh Electrical crimp connector for making a connection between an insulated wire and connecting element
EP0051153A1 (en) * 1980-10-29 1982-05-12 Siemens Aktiengesellschaft Clamping element for the connexion without stripping of electrical conductors
US4348072A (en) * 1978-10-26 1982-09-07 Thomas & Betts Corporation Insulation displacing electrical contact assembly
US4715830A (en) * 1986-10-27 1987-12-29 Porta Systems Corp. Wire strain relief and conductor retainer construction for telephone blocks
FR2602921A1 (en) * 1986-08-13 1988-02-19 Porta Systems Corp Block laminar type phone connector
US5057034A (en) * 1989-06-28 1991-10-15 Siemens Aktiengesellschaft Distributor device for telecommunication systems
US5522733A (en) * 1991-06-12 1996-06-04 Mod-Tap W Corp. Electrical connectors
US5733140A (en) * 1996-03-12 1998-03-31 Lucent Technologies Inc. Connecting block and patch cord combination
US6050842A (en) * 1996-09-27 2000-04-18 The Whitaker Corporation Electrical connector with paired terminals
US20030119385A1 (en) * 1999-01-11 2003-06-26 Elliot Douglas G. Vertical cable management system with ribcage structure
US20060057883A1 (en) * 2004-09-15 2006-03-16 Xavier Fasce Insulation displacement system for two electrical conductors
US20060057884A1 (en) * 2004-09-15 2006-03-16 Xavier Fasce Connector assembly for housing insulation displacement elements
US20060089040A1 (en) * 2004-09-15 2006-04-27 3M Innovative Properties Company Cap configured to removably connect to an insulation displacement connector block
US20060160404A1 (en) * 2004-09-15 2006-07-20 Alarcon Sergio A Connector assembly for housing insulation displacement elements
US20060264117A1 (en) * 2005-05-18 2006-11-23 Hills Douglas P Frame assembly
US20060264090A1 (en) * 2005-05-18 2006-11-23 Dower William V Electrical connector assembly and method of forming the same
US7165983B1 (en) 2005-12-08 2007-01-23 3M Innovative Properties Company Access cover configured to receive a testing device
US20090130911A1 (en) * 2007-11-16 2009-05-21 Hon Hai Precision Ind. Co., Ltd. Spindle motor connector and method of making the same
US20120243183A1 (en) * 2011-03-23 2012-09-27 Tanaka Kapec Design Group, Inc. Wall mounted diagnostic cabinet assembly

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DE970343C (en) * 1953-10-11 1958-09-11 Albert Ackermann O H G Solder lug for communication and signal systems
US3181109A (en) * 1961-10-09 1965-04-27 Paul H Snider Connector for telephone terminal block
US3308422A (en) * 1965-08-19 1967-03-07 Donald C Boysen Bridging connector for telephone terminal blocks
US3521221A (en) * 1968-02-21 1970-07-21 Northern Electric Co Insulation slicing connector
US3617983A (en) * 1969-03-07 1971-11-02 Amp Inc Terminal junction interconnection system

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Publication number Priority date Publication date Assignee Title
US2098321A (en) * 1935-06-07 1937-11-09 Bell Telephone Labor Inc Distributing frame
DE970343C (en) * 1953-10-11 1958-09-11 Albert Ackermann O H G Solder lug for communication and signal systems
US3181109A (en) * 1961-10-09 1965-04-27 Paul H Snider Connector for telephone terminal block
US3308422A (en) * 1965-08-19 1967-03-07 Donald C Boysen Bridging connector for telephone terminal blocks
US3521221A (en) * 1968-02-21 1970-07-21 Northern Electric Co Insulation slicing connector
US3617983A (en) * 1969-03-07 1971-11-02 Amp Inc Terminal junction interconnection system

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772638A (en) * 1972-07-13 1973-11-13 Ark Les Switch Corp Wire connector
US3878603A (en) * 1972-08-21 1975-04-22 Leo Anker Jensen Method and apparatus for the solderless splicing of multi-lead cables
US4021093A (en) * 1975-02-28 1977-05-03 Hego Electric G.M.B.H. Connection frame for electrical installations
US4136920A (en) * 1976-10-28 1979-01-30 Siemens Aktiengesellschaft Wire clamping element
US4171857A (en) * 1977-06-07 1979-10-23 Krone Gmbh Cleat connector for insulated wires
DE2804478A1 (en) * 1978-01-31 1979-08-02 Krone Gmbh Apparatus and method for manufacturing a brazed, screwed and stripless contact to a fixed terminal, in particular for the telecommunication line technology
US4283103A (en) * 1978-01-31 1981-08-11 Krone Gmbh Electrical crimp connector
US4279460A (en) * 1978-03-30 1981-07-21 Krone Gmbh Electrical crimp connector for making a connection between an insulated wire and connecting element
US4348072A (en) * 1978-10-26 1982-09-07 Thomas & Betts Corporation Insulation displacing electrical contact assembly
US4366527A (en) * 1979-03-31 1982-12-28 Ferranti Limited Circuit assemblies each with a connector having an insulating block with two separable stacked parts
FR2453583A1 (en) * 1979-03-31 1980-10-31 Ferranti Ltd Connection circuit modular elements
EP0051153A1 (en) * 1980-10-29 1982-05-12 Siemens Aktiengesellschaft Clamping element for the connexion without stripping of electrical conductors
FR2602921A1 (en) * 1986-08-13 1988-02-19 Porta Systems Corp Block laminar type phone connector
BE1001862A4 (en) * 1986-08-13 1990-03-27 Porta Systems Corp Connecting block telephone type of laminar.
US4715830A (en) * 1986-10-27 1987-12-29 Porta Systems Corp. Wire strain relief and conductor retainer construction for telephone blocks
US5057034A (en) * 1989-06-28 1991-10-15 Siemens Aktiengesellschaft Distributor device for telecommunication systems
US5522733A (en) * 1991-06-12 1996-06-04 Mod-Tap W Corp. Electrical connectors
US5733140A (en) * 1996-03-12 1998-03-31 Lucent Technologies Inc. Connecting block and patch cord combination
US6050842A (en) * 1996-09-27 2000-04-18 The Whitaker Corporation Electrical connector with paired terminals
US20030119385A1 (en) * 1999-01-11 2003-06-26 Elliot Douglas G. Vertical cable management system with ribcage structure
US6918796B2 (en) * 1999-01-11 2005-07-19 Adc Telecommunications, Inc. Vertical cable management system with ribcage structure
US7458840B2 (en) 2004-09-15 2008-12-02 3M Innovative Properties Company Cap configured to removably connect to an insulation displacement connector block
US20060057884A1 (en) * 2004-09-15 2006-03-16 Xavier Fasce Connector assembly for housing insulation displacement elements
US20060089040A1 (en) * 2004-09-15 2006-04-27 3M Innovative Properties Company Cap configured to removably connect to an insulation displacement connector block
US20060160404A1 (en) * 2004-09-15 2006-07-20 Alarcon Sergio A Connector assembly for housing insulation displacement elements
US7101216B2 (en) 2004-09-15 2006-09-05 3M Innovative Properties Company Insulation displacement system for two electrical conductors
US7335049B2 (en) 2004-09-15 2008-02-26 3M Innovative Properties Company Connector assembly for housing insulation displacement elements
US20060057883A1 (en) * 2004-09-15 2006-03-16 Xavier Fasce Insulation displacement system for two electrical conductors
US7399197B2 (en) 2004-09-15 2008-07-15 3M Innovative Properties Company Connector assembly for housing insulation displacement elements
US20060264090A1 (en) * 2005-05-18 2006-11-23 Dower William V Electrical connector assembly and method of forming the same
US7303446B2 (en) 2005-05-18 2007-12-04 3M Innovative Proprties Company Frame assembly
US20060264117A1 (en) * 2005-05-18 2006-11-23 Hills Douglas P Frame assembly
US7165983B1 (en) 2005-12-08 2007-01-23 3M Innovative Properties Company Access cover configured to receive a testing device
US20090130911A1 (en) * 2007-11-16 2009-05-21 Hon Hai Precision Ind. Co., Ltd. Spindle motor connector and method of making the same
US7572157B2 (en) * 2007-11-16 2009-08-11 Hon Hai Precision Ind. Co., Ltd. Spindle motor connector and method of making the same
US20120243183A1 (en) * 2011-03-23 2012-09-27 Tanaka Kapec Design Group, Inc. Wall mounted diagnostic cabinet assembly
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