CA1104686A - Transmission cable mass termination method - Google Patents
Transmission cable mass termination methodInfo
- Publication number
- CA1104686A CA1104686A CA320,144A CA320144A CA1104686A CA 1104686 A CA1104686 A CA 1104686A CA 320144 A CA320144 A CA 320144A CA 1104686 A CA1104686 A CA 1104686A
- Authority
- CA
- Canada
- Prior art keywords
- conductors
- cable
- ground
- assembly
- clip
- 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
Links
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
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
- H01R12/771—Details
- H01R12/775—Ground or shield arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
- H01R13/6585—Shielding material individually surrounding or interposed between mutually spaced contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
Landscapes
- Multi-Conductor Connections (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
ABSTRACT
The present invention is directed generally to electrical connection assemblies and, more particularly, to an assembly for terminating a flat electrical cable having a plurality of electrical transmission or signal conductors and ground conductors arranged in a closely-spaced array within a strip of insulative material.
Prior art termination assemblies suffer from the dis-advantage that they are not suitable for use with cable having very closely spaced conductors. When the conductors are spaced at intervals of about 0.030 inch or less, conventional insulation-piercing termination devices are susceptible to shorting which is, of course, unacceptable.
The present invention therefore, is directed to a mass termination system for flat cable having very closely spaced con-ductors which overcomes the problems and disadvantages associated with prior art devices. The assembly of the present invention includes connector means to terminate selected conductors, isolation means to inactivate certain other selected conductors at the locus of the termination and bridging means to electrically couple the inactivated conductors to the connector means. The assembly allows the use of in-sulation-piercing termination devices without the danger of shorting between the closely spaced adjacent conductors.
The present invention is directed generally to electrical connection assemblies and, more particularly, to an assembly for terminating a flat electrical cable having a plurality of electrical transmission or signal conductors and ground conductors arranged in a closely-spaced array within a strip of insulative material.
Prior art termination assemblies suffer from the dis-advantage that they are not suitable for use with cable having very closely spaced conductors. When the conductors are spaced at intervals of about 0.030 inch or less, conventional insulation-piercing termination devices are susceptible to shorting which is, of course, unacceptable.
The present invention therefore, is directed to a mass termination system for flat cable having very closely spaced con-ductors which overcomes the problems and disadvantages associated with prior art devices. The assembly of the present invention includes connector means to terminate selected conductors, isolation means to inactivate certain other selected conductors at the locus of the termination and bridging means to electrically couple the inactivated conductors to the connector means. The assembly allows the use of in-sulation-piercing termination devices without the danger of shorting between the closely spaced adjacent conductors.
Description
l~V~686 TRANSMISSION CABLE MASS
TERMINATION METHOD
TECHNICAL FIELD
The present invention is directed generaliy to electrlcal connection assemblles ~nd, more particularly, to an assembly for term7nating a flat electrical cable having a plurality of electrtcal transmission or signal conductors and ground conductors arranged in a closely-spaced array wlthin a strlp of insulative material.
BACKGROUND OF PRIOR ART
In recent years flexible, flat multiconductor cable has been used with increasing frequency in the communicatlons, data proces-sing and transportation industries. Flat cable is partlcularly well suited for electrlcally connecting high density banks of circuit elements used in modern computers. To effect these connections rapidly and economically, a variety of dlfferent conductors, connector assemblles or mass terminatlon systems have been developed. Con-ventional solder and crimp type terminations and, more recently, insula-tion-piercTng terminations have been satisfactorily employed in these assem~lies to terminate the conductors of the flat cable with the connector.
Although these prior art termination assemblies have met with some commerclal success, they all suffer from the disadvantage that they are not suitable for use with cable having very closely spaced conductors. For example, insulation-piercing terminations used in the prlor art are useful only with cable havlng conductors spaced at inter-vals of about 0.050 inch or more. When the conductors are spaced at intervals of about 0.030 inch or less, conventional insulation-piercing termination devices are susceptible to shorting which is, of course, unacceptable.
11~246~6 Accordingly, all known connection assembl1es used with flat cable having very closely spaced conductors employ solder-type termin-ations and arrangements of components which effect a greater spacing between the conductors to facilitate the soldering operation. These assemblies are not only relatively expensive, but the soldering oper-ation is labor intensive, thereby increasing their installation cost.
BRIEF SUM~iARY OF INVENTION
The present invention, therefore, is directed to a mass termination system for flat cable having very closely spaced con-ductors which overcomes the problems and disadvantages associatedwith prior art devices. The termtnation system or assembly of the present invention may be used to terminate a cable with conductors spaced at about 0.015 inch intervals and may In some applications employ conventional connectors including those presently adapted for the 0.050 inch conductor spacing found in most standard flat cable.
Moreover, the assembly may employ insulation-piercing terminations without the danger of shorting between adjacent transmission con-ductors.
The invention finds particular application for termin-ating flat cable having electrical transmission or signal conductorswlth ground conductors disposed therebetween and generally comprises connector means, isolation means and bridging means. The connector means inçlp4e$ ~rm~nal means for slectrically engaging the signal conductors and active contact means in electrical communications with the terminal means for electrically interconnecting the signal con-ductors to an associated electrical component. The isolation means breaks the electrically conducti~e path between the connector means and the live ground conductors and may comprise apertures in the cable which sever the ground conductors, resulting in "dead" ground con-ductors along the length of cable where the termination is effected.The brTdging means comprises a conductive member which electrically joins the live portion of the ground conductors to a ground terminal within the connector.
BRIEF DESCRIPTION OF THE DRAWINCS
The novel features which are believed to be characteristic of the invention are set forth in the appended claims. The invention, itself, however, together with further obiects and attendant advantages thereof, will be best understood by reference to the following 39 description taken in connection with the accompanying drawings in which:
FIGURE I T 5 a perspective view t11ustrating the termination assembly of the present invention and showing the arrangement of a pre-ferred connector means isolation means and bridging means wTth a flat cable;
FIGURE 2 is an enlarged cross-sectional view taken along llne 2-2 of FIGURE I and showing in detail an insulation-piercing terminal means and an active contact means;
FIGURF 3 Is an enlarged cross-sectlonal vlew taken along line 3-3 in FIGURE I showing one preferred brtdging means and wlth one of the terminal members of the bridging means In the open posttion;
FI~URE 4 is a view similar to that of ~IGUi~E 3 illus-tratlng a preferred surface configuration for the flat cable used with the present Invention;
FIGURE 5 is an enlarged fragmentary plan vlew illustrattng further detatls of the termination assembly shown in FIGURE l; and FIGURE 6 is a cross-sectional view taken along the line 6-6 of FIGURE 5.
DETAILED DESCRIPTION OF THE INVENTION
Referring now to FIGURE 1 the mass termination assembly of the present invention designated generally as 10 is illustrated In one of its preferred embodiments terminating a flat cable 20. The assembly 10 Includes a connector means 12 isolation means comprising a serles of apertures 14 In cable 20 and bridging means 16.
The illustrated cable 20 Is particularly well suited for use wlth the termination assembly of the present invention and comprises a plurality of slgnal or power carrying conductors 21 and a plurality of ground conductors 23 one or more of the ground conductors being interposed between adjacent signal conductors. The conductors 21 and 23 are spaced by as little as O.OIS inch and accordlngly it is d1fficult to tenminate the signal conductors 21 by use of conventlonal insulatlon-pterclng terminals without shorting to adjacent ground con-ductors 23.
The connector means 12 may be any one of a variety of dif-ferent connectors well known to those skilled in the art for use interminating flat cable. Generally the con~ector means 12 includes two-piece ho~sing having a base 18 and a co~er portion 19 made from dielectric material and which support and enclose a plurality of 39 contacts 22. The contacts 22 comprise a terminal portion 24 for llQ46~36 electrlcally engaging an Tndtvidual signal conductor of the cable 20 and an active contact portion 26 which mates w7th an electrical com-ponent to be interconnected with the cable. In the illustrated embodlment, the contacts 22 comprise an insulatlon-piercing terminal 5 portion and a multl-tine socket, active contact portion. Of course, the use of insulatlon-piercing contacts greatly facilitates the term-lnation operation, and, as described in greater detail below,. the present invention enables the use of such termination means even with the cable 20 having very closely spaced conductors 21 and 23.
The isolatlon means comprises, in the preferred embodTment, a series of apertures 14 which sever the ground conductors 23 so that along the portion of the cable 20 cooperating wlth the connector 12 the conductors 23 are dead and do not act as a ground path. Accord-lngly, along this portion of the conductor the spacing between active 15 conductors is actually the interval between adjacent signal conductors 21. In cable 20, the conductors 21 are at 0.050 inch intervals and, therefore, conventional flat cable connectors can be used to effect the termination.
In order to provide a ground path to and from the connector, 20 the bridging means 16 is utilized to electrically couple each of the ground conductors 23 to a single ground conductor 23 which may be convenlently located at one edge 20 of the cable 20. The bridging means illustrated in the drawings comprises an elongated clip 3û which may be easily fabricated from sheet metal by conventional stamping 25 and forming operations. The clip 30 includes a plurality of U-shaped terminat7On members 32, each having a bight portion 34 passing through an aperture 14 and leg portions 36 and 38 which overlfe the opposed surfaces of the cable. The free ends of each leg portion are formed into flange-like, insulation-piercing terminal means 40 and 42, and 30 at least one of the terminal means is positioned and configured to make electrical contact with the ground conductors 23. As most clearly seen in FIGU~<ES 5 and 6, the clip 3C includes a terminal member 44 which extends over and is folded under the lateral edge 20 of the cable. The member 44 has a termination flange 46 at its distal 35 end which engages conductor 23, the live ground path into the con-nector 12. The members 32 are ~oined to each other and to terminal member 44 by a strip or web 48, forming a unitary ground clip and, thus9 a continuous ground path from each ground conductor 23, through 39 terminal 44 and conductor 23, into the connector 12. ()f course, in llQ466?6 those instances where the flat cable continues to a further con-nector or other electrical components, another ground clip may be installed in a similar manner on the ".'own stream" side of con-nector 12.
FIGURE 4 illustrates a preferned external configuration for the cable 20, having spaced longitudinal grooves 50 positioned to assist the proper orientation and penetration of the termTnal means 40 and 42 into the cable and conductors 23. The grooves are particularly useful when the insulation used in the flat cable is very hard and might have a tendency to deform or misdirect the piercing tips of the terminal means.
Installation of the termination assembly of the present invention Is simple and may be completed in a very short time.
The connector means 12 is assembled ~o the cable 20 in an entirely conventional and well known manner, and the apertures 14 may be formed with a hand punch or tool specially designed for this purpos~.
The clip 30 is then assembled to the cable by inserting the legs 38 through the apertures 14 and crimping each terminal member 32 to pierce the Tnsulation of the cable and eiec~r;cally engage the ground con-20 ductors 23. The terminal member 44 is then folded over edge 20~ and crimped to the cable to electrically engage conductor 23~. For pre-determi~ned installations, the cab!e may be prepunched and the clip 30 assembled to the cable 20 in the factory to eliminate these oper-ations In the field.
Of course, it should be understood that various changes and modifications to the preferred embodiment described herein will be apparent to those s'~illed in the art. Such changes and modiflcations can be made withGut departing from the spirit and scope of the present invention and without diminishing its attendant advantages. For example, other structures and configuratio:s may be used for the clip 30 and terminal members 32 and 44. In addition, other isolation means may be employed In place of apertures 14. Finally, the Isolation means and bridging means need not be located adjacent the connector means as shown, but may be remote from the ccnnector where such an arrange-ment will ease and facilitate installation or service and maintenance.It is fherefore intended that all such changes and modifications be covered by the following claims~
TERMINATION METHOD
TECHNICAL FIELD
The present invention is directed generaliy to electrlcal connection assemblles ~nd, more particularly, to an assembly for term7nating a flat electrical cable having a plurality of electrtcal transmission or signal conductors and ground conductors arranged in a closely-spaced array wlthin a strlp of insulative material.
BACKGROUND OF PRIOR ART
In recent years flexible, flat multiconductor cable has been used with increasing frequency in the communicatlons, data proces-sing and transportation industries. Flat cable is partlcularly well suited for electrlcally connecting high density banks of circuit elements used in modern computers. To effect these connections rapidly and economically, a variety of dlfferent conductors, connector assemblles or mass terminatlon systems have been developed. Con-ventional solder and crimp type terminations and, more recently, insula-tion-piercTng terminations have been satisfactorily employed in these assem~lies to terminate the conductors of the flat cable with the connector.
Although these prior art termination assemblies have met with some commerclal success, they all suffer from the disadvantage that they are not suitable for use with cable having very closely spaced conductors. For example, insulation-piercing terminations used in the prlor art are useful only with cable havlng conductors spaced at inter-vals of about 0.050 inch or more. When the conductors are spaced at intervals of about 0.030 inch or less, conventional insulation-piercing termination devices are susceptible to shorting which is, of course, unacceptable.
11~246~6 Accordingly, all known connection assembl1es used with flat cable having very closely spaced conductors employ solder-type termin-ations and arrangements of components which effect a greater spacing between the conductors to facilitate the soldering operation. These assemblies are not only relatively expensive, but the soldering oper-ation is labor intensive, thereby increasing their installation cost.
BRIEF SUM~iARY OF INVENTION
The present invention, therefore, is directed to a mass termination system for flat cable having very closely spaced con-ductors which overcomes the problems and disadvantages associatedwith prior art devices. The termtnation system or assembly of the present invention may be used to terminate a cable with conductors spaced at about 0.015 inch intervals and may In some applications employ conventional connectors including those presently adapted for the 0.050 inch conductor spacing found in most standard flat cable.
Moreover, the assembly may employ insulation-piercing terminations without the danger of shorting between adjacent transmission con-ductors.
The invention finds particular application for termin-ating flat cable having electrical transmission or signal conductorswlth ground conductors disposed therebetween and generally comprises connector means, isolation means and bridging means. The connector means inçlp4e$ ~rm~nal means for slectrically engaging the signal conductors and active contact means in electrical communications with the terminal means for electrically interconnecting the signal con-ductors to an associated electrical component. The isolation means breaks the electrically conducti~e path between the connector means and the live ground conductors and may comprise apertures in the cable which sever the ground conductors, resulting in "dead" ground con-ductors along the length of cable where the termination is effected.The brTdging means comprises a conductive member which electrically joins the live portion of the ground conductors to a ground terminal within the connector.
BRIEF DESCRIPTION OF THE DRAWINCS
The novel features which are believed to be characteristic of the invention are set forth in the appended claims. The invention, itself, however, together with further obiects and attendant advantages thereof, will be best understood by reference to the following 39 description taken in connection with the accompanying drawings in which:
FIGURE I T 5 a perspective view t11ustrating the termination assembly of the present invention and showing the arrangement of a pre-ferred connector means isolation means and bridging means wTth a flat cable;
FIGURE 2 is an enlarged cross-sectional view taken along llne 2-2 of FIGURE I and showing in detail an insulation-piercing terminal means and an active contact means;
FIGURF 3 Is an enlarged cross-sectlonal vlew taken along line 3-3 in FIGURE I showing one preferred brtdging means and wlth one of the terminal members of the bridging means In the open posttion;
FI~URE 4 is a view similar to that of ~IGUi~E 3 illus-tratlng a preferred surface configuration for the flat cable used with the present Invention;
FIGURE 5 is an enlarged fragmentary plan vlew illustrattng further detatls of the termination assembly shown in FIGURE l; and FIGURE 6 is a cross-sectional view taken along the line 6-6 of FIGURE 5.
DETAILED DESCRIPTION OF THE INVENTION
Referring now to FIGURE 1 the mass termination assembly of the present invention designated generally as 10 is illustrated In one of its preferred embodiments terminating a flat cable 20. The assembly 10 Includes a connector means 12 isolation means comprising a serles of apertures 14 In cable 20 and bridging means 16.
The illustrated cable 20 Is particularly well suited for use wlth the termination assembly of the present invention and comprises a plurality of slgnal or power carrying conductors 21 and a plurality of ground conductors 23 one or more of the ground conductors being interposed between adjacent signal conductors. The conductors 21 and 23 are spaced by as little as O.OIS inch and accordlngly it is d1fficult to tenminate the signal conductors 21 by use of conventlonal insulatlon-pterclng terminals without shorting to adjacent ground con-ductors 23.
The connector means 12 may be any one of a variety of dif-ferent connectors well known to those skilled in the art for use interminating flat cable. Generally the con~ector means 12 includes two-piece ho~sing having a base 18 and a co~er portion 19 made from dielectric material and which support and enclose a plurality of 39 contacts 22. The contacts 22 comprise a terminal portion 24 for llQ46~36 electrlcally engaging an Tndtvidual signal conductor of the cable 20 and an active contact portion 26 which mates w7th an electrical com-ponent to be interconnected with the cable. In the illustrated embodlment, the contacts 22 comprise an insulatlon-piercing terminal 5 portion and a multl-tine socket, active contact portion. Of course, the use of insulatlon-piercing contacts greatly facilitates the term-lnation operation, and, as described in greater detail below,. the present invention enables the use of such termination means even with the cable 20 having very closely spaced conductors 21 and 23.
The isolatlon means comprises, in the preferred embodTment, a series of apertures 14 which sever the ground conductors 23 so that along the portion of the cable 20 cooperating wlth the connector 12 the conductors 23 are dead and do not act as a ground path. Accord-lngly, along this portion of the conductor the spacing between active 15 conductors is actually the interval between adjacent signal conductors 21. In cable 20, the conductors 21 are at 0.050 inch intervals and, therefore, conventional flat cable connectors can be used to effect the termination.
In order to provide a ground path to and from the connector, 20 the bridging means 16 is utilized to electrically couple each of the ground conductors 23 to a single ground conductor 23 which may be convenlently located at one edge 20 of the cable 20. The bridging means illustrated in the drawings comprises an elongated clip 3û which may be easily fabricated from sheet metal by conventional stamping 25 and forming operations. The clip 30 includes a plurality of U-shaped terminat7On members 32, each having a bight portion 34 passing through an aperture 14 and leg portions 36 and 38 which overlfe the opposed surfaces of the cable. The free ends of each leg portion are formed into flange-like, insulation-piercing terminal means 40 and 42, and 30 at least one of the terminal means is positioned and configured to make electrical contact with the ground conductors 23. As most clearly seen in FIGU~<ES 5 and 6, the clip 3C includes a terminal member 44 which extends over and is folded under the lateral edge 20 of the cable. The member 44 has a termination flange 46 at its distal 35 end which engages conductor 23, the live ground path into the con-nector 12. The members 32 are ~oined to each other and to terminal member 44 by a strip or web 48, forming a unitary ground clip and, thus9 a continuous ground path from each ground conductor 23, through 39 terminal 44 and conductor 23, into the connector 12. ()f course, in llQ466?6 those instances where the flat cable continues to a further con-nector or other electrical components, another ground clip may be installed in a similar manner on the ".'own stream" side of con-nector 12.
FIGURE 4 illustrates a preferned external configuration for the cable 20, having spaced longitudinal grooves 50 positioned to assist the proper orientation and penetration of the termTnal means 40 and 42 into the cable and conductors 23. The grooves are particularly useful when the insulation used in the flat cable is very hard and might have a tendency to deform or misdirect the piercing tips of the terminal means.
Installation of the termination assembly of the present invention Is simple and may be completed in a very short time.
The connector means 12 is assembled ~o the cable 20 in an entirely conventional and well known manner, and the apertures 14 may be formed with a hand punch or tool specially designed for this purpos~.
The clip 30 is then assembled to the cable by inserting the legs 38 through the apertures 14 and crimping each terminal member 32 to pierce the Tnsulation of the cable and eiec~r;cally engage the ground con-20 ductors 23. The terminal member 44 is then folded over edge 20~ and crimped to the cable to electrically engage conductor 23~. For pre-determi~ned installations, the cab!e may be prepunched and the clip 30 assembled to the cable 20 in the factory to eliminate these oper-ations In the field.
Of course, it should be understood that various changes and modifications to the preferred embodiment described herein will be apparent to those s'~illed in the art. Such changes and modiflcations can be made withGut departing from the spirit and scope of the present invention and without diminishing its attendant advantages. For example, other structures and configuratio:s may be used for the clip 30 and terminal members 32 and 44. In addition, other isolation means may be employed In place of apertures 14. Finally, the Isolation means and bridging means need not be located adjacent the connector means as shown, but may be remote from the ccnnector where such an arrange-ment will ease and facilitate installation or service and maintenance.It is fherefore intended that all such changes and modifications be covered by the following claims~
Claims (7)
1. An assembly for terminating an electrical cable having a plurality of first conductors for transmitting electrical signals or power to an associated electrical component and at least one ground conductor all of said conductors being carried in a flat strip of insulative material said assembly comprising: a connector including terminal means for electrically engaging one or more of said first conductors and active contact means in electrical communication with said terminal means for electrically interconnecting to said associated component; means for isolating said connector from the ground conductors of said cable; and means for bridging said iso-lation means to electrically join at least one of said ground con-ductors to a ground terminal within said connector.
2. The assembly as claimed in Claim 1 wherein said bridg-ing means comprises a clip means having terminal means for electrically engaging at least one of said ground conductors and conductive means for electrically joining said clip to said ground terminal.
3. The assembly as claimed in Claim 1 wherein said iso-lation means comprises at least one aperture in said cable each said aperture positioned on said cable to sever one or more ground conductors without impeding the transmission of said electrical signals or power through said cable.
4. The assembly as claimed in Claim 1 wherein said bridging means comprises a clip means having insulation-piercing terminal means for electrically engaging said ground conductors and con-ductive means for electrically joining said clip to said ground terminal and wherein said insulative material has a surface con-figuration to guide the clip terminal means into engagement with said ground conductors.
5. The assembly as claimed In Claim 2 wherein said clip in-cludes at least one sheet metal and generally U-shaped member the free ends of said member having means for piercing said insulation from opposite sides of said cable at least one of said insulation-piercing means positioned and configured to electrically engage said ground conductor thereby providing said clip terminal means.
6. The assembly as claimed in Claim 5 wherein said clip includes a plurality of said U-shaped members and a web joining said members to thereby form a unitary ground clip.
7. The assembly as claimed in Claim 1 wherein said connector terminal means comprises a plurality of insulation-piercing members, each electrically engaging a single one of said first conductors.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US87190878A | 1978-01-24 | 1978-01-24 | |
| US871,908 | 1978-01-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1104686A true CA1104686A (en) | 1981-07-07 |
Family
ID=25358423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA320,144A Expired CA1104686A (en) | 1978-01-24 | 1979-01-23 | Transmission cable mass termination method |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS54113090A (en) |
| BE (1) | BE873686A (en) |
| CA (1) | CA1104686A (en) |
| DE (1) | DE2901113A1 (en) |
| GB (1) | GB2013044A (en) |
| IT (1) | IT1110762B (en) |
| NL (1) | NL7900537A (en) |
| SE (1) | SE7900535L (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2110886B (en) * | 1981-12-01 | 1985-12-11 | Bunker Ramo | Electrical connector member |
-
1979
- 1979-01-12 DE DE19792901113 patent/DE2901113A1/en not_active Withdrawn
- 1979-01-15 GB GB791382A patent/GB2013044A/en not_active Withdrawn
- 1979-01-22 SE SE7900535A patent/SE7900535L/en unknown
- 1979-01-23 IT IT19523/79A patent/IT1110762B/en active
- 1979-01-23 CA CA320,144A patent/CA1104686A/en not_active Expired
- 1979-01-23 JP JP562779A patent/JPS54113090A/en active Pending
- 1979-01-24 NL NL7900537A patent/NL7900537A/en not_active Application Discontinuation
- 1979-01-24 BE BE0/193062A patent/BE873686A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE873686A (en) | 1979-07-24 |
| GB2013044A (en) | 1979-08-01 |
| JPS54113090A (en) | 1979-09-04 |
| IT1110762B (en) | 1986-01-06 |
| SE7900535L (en) | 1979-07-25 |
| IT7919523A0 (en) | 1979-01-23 |
| NL7900537A (en) | 1979-07-26 |
| DE2901113A1 (en) | 1979-07-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 19980707 |