EP0463824A1 - Cable tapping connector - Google Patents
Cable tapping connector Download PDFInfo
- Publication number
- EP0463824A1 EP0463824A1 EP91305649A EP91305649A EP0463824A1 EP 0463824 A1 EP0463824 A1 EP 0463824A1 EP 91305649 A EP91305649 A EP 91305649A EP 91305649 A EP91305649 A EP 91305649A EP 0463824 A1 EP0463824 A1 EP 0463824A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- cable
- outer casing
- hollow outer
- housing
- 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.)
- Withdrawn
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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
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
- H01R9/053—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables using contact members penetrating insulation
-
- 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
- H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
- H01R4/2406—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation having needles or pins
Definitions
- the present invention relates to electrical connectors and in particular to connectors having a contact probe which penetrates the outer layers of a cable to make electrical contact with a central conductor.
- the present invention has particular application when used with coaxial cables, to provide an electrical tap connection to the central conductor thereof, although it is not limited to such use.
- a particular problem associated with tapping connectors is that of preventing the probe contact from becoming dirty as it is driven through the outer layers of a cable prior to making contact with the central conductor. Dirt collected on the probe contact surface can result in a poor electrical connection. between the probe and conductor.
- the problem is particularly acute in data communication networks using coaxial cable.
- the earthed outer shield of the cable must not be allowed to contact either the central conductor or the probe of the tapping connector.
- Many coaxial cables have an outer shield of braided copper wire and, as the probe is forced through the shield, strands of the copper wire may be carried along with the probe and into contact with the central conductor.
- a spring-biased probe contact is rotated as it is driven through the outer layers of a coaxial cable to "wipe" the probe contact surface in order to prevent the build up of debris thereupon.
- the outer surface of the probe contact is provided with a self-tapping screw thread such that the probe threads its way through the outer layers of the cable rather than being pushed through.
- the probe contact of the second embodiment is again spring-biased and, as it is rotated to screw it into the cable, the probe and thread surfaces are "wiped” to prevent the build up of debris.
- those of EP-A-0109229 are in the form of a dielectric body with a metal tip.
- the probes In order to prevent these probes picking up debris or dragging the outer layers of the cable with them as they are inserted, the probes should be manufactured with surfaces as smooth as possible. This however requires great precision and care in manufacture.
- an electrical connector comprising a connector housing, adapted to receive and constrain a cable portion, and a contact assembly, the contact assembly comprising a hollow outer casing of non-conductive material movable relative to the connector housing to penetrate at least the outer covering of a cable portion constrained by the housing, and a contact of conductive material mounted within the hollow outer casing and movable lengthwise within it, the hollow outer casing having a penetrable end portion at least substantially closing the end thereof, and the contact being movable within the hollow outer casing to break through the said end portion, when the hollow outer casing has penetrated at least the outer covering of a cable constrained by the housing, to make electrical contact with the central conductor of the cable portion.
- the penetrable end portion of the hollow outer casing may smoothly taper to a point to provide improved penetration of the outer layer or layers of the cable portion being tapped, and the contact mounted within the hollow outer casing may be movable to break through the hollow outer casing at that tapered point.
- the pentrable end portion is preferably configured such that, when the contact breaks through it, the broken parts of the penetrable end portion move away from the contact.
- the connector may include means, such as conductive knife blades mounted within the connector housing, to penetrate the outer casing of the coaxial cable and make electrical contact with the outer conductor of the cable.
- the connector housing may include resilient means positioned to urge a received cable against the contact assembly.
- the electrical connector of the present invention overcomes the problems of debris collection described above with reference to the prior art devices by the use of the non-conductive hollow outer casing around the tap connector contact. Debris collected during penetration of the outer layers of a cable will accumulate on the outer surface of the penetrable end portion of the hollow outer casing. When the contact breaks through the hollow outer casing, preferably at a point adjacent the cable central conductor, the broken parts of the penetrable end portion and the collected debris will be pushed away from the contact thereby minimising the amount of dirt and debris which the contact may collect on its way to the cable central conductor.
- Rotation of the hollow outer casing as it penetrates the outer layer or layers of the cable may assist in reducing the amount of debris collected in a similar manner to the rotated contact described in EP-A-0109229 referred to above.
- a coaxial cable 10 consists of a central conductor 12 in the form of a copper core around which is a layer of polytetrafluoroethane (PTFE) insulation material 14. Radially outward of the layer of insulation material 14 are layers of polar film 16, copper braiding 18, and an outer layer of insulation material 20 respectively.
- PTFE polytetrafluoroethane
- the coaxial cable tap connector 22 of the present invention is shown in figures 1 and 4.
- the connector 22 has a two part housing comprising a body portion 24 and a concave cover 26.
- the body 24 has an upper surface 28 which the edges of the cover 26 abut.
- Resilient tongues 30 extending from the upper surface 28 engage a lip 32 on the inner surface of the cover 26 to hold the cover 26 against the upper surface 28.
- the end of the resilient tongues 30 and the lip 32 are chamfered (as shown in figure 1) such that the cover 26 has a snap-fit engagement with the body 24.
- a ridge 34 adjacent the edge of the upper surface 28 locates the edges of the cover 26 relative to the body 24.
- the cover 26 and upper surface 28 define an aperture therebetween in which a coaxial cable 10 is received.
- the spacing of the knife blades 36 is less than the outer diameter of the coaxial cable layer of copper braiding 18 such that, when a cable 10 is pressed into the gap between the knife blades 36, they cut through the outer insulation 20 of the cable and make electrical connection with the layer of copper braiding 18.
- FIG 2 The relative positions of a knife blade 36 and constrained cable 10 are shown in figure 2. As can also be seen from figure 2 the knife blade 36 has an elongated portion 38 extending therefrom to which electrical connection may be made.
- the inner surface of the cover 26 has three ridges 40,42 extending therefrom towards the cable 10.
- the ridges 40, 42 are substantially parallel to each other and to the axis of the cable.
- the two outer ridges 42 extend further from the cover 26 than does the central ridge 40 such that, in addition to pressing the cable 10 against the upper surface 28, the three ridges 40, 42 act to centre the cable with respect to the connector.
- a contact assembly 44 is mounted below the upper surface 28 and is movable through an aperture 46 therein.
- the contact assembly 44 comprises a hollow outer casing 48, a contact mounting 50 and a conductive contact 52.
- a part of the outer surface 54 of the hollow outer casing is threaded and engages a corresponding threaded bore on the internal surface 56 of a cylindrical extension 58 below the upper surface 28 and about the aperture 46 therein.
- the hollow outer casing 48 tapers to a conical point 60.
- the contact assembly 44 With the contact assembly 44 in a retracted position (not shown) the conical point 60 of the hollow outer body lies below the level of the upper surface.
- the contact mounting 50 which holds the conductive contact 52.
- the outer surface 68 of the contact mounting 50 is threaded and engages a corresponding thread 70 on the inner surface of the hollow outer body 48. Movement of the contact mounting 50 and contact 52 relative to the hollow outer body 48 is achieved by rotation of the contact mounting 50.
- a profiled aperture 72 is provided in the lower end of the contact mounting 50 allowing the insertion of a suitably shaped tool to engage the contact mounting 50 and rotate it.
- the conductive contact 52 is shrouded by the contact mounting 50 over its upper portion with the exception of a tapered point 74 at its upper end.
- the tapered point 74 of the contact 52 is positioned in a correspondingly shaped aperture within the conical point 60.
- the contact mounting 50 When the conical point 60 has penetrated the cable to the required depth, the contact mounting 50 is rotated within the hollow outer body 48. This rotation causes the tapered point 74 of the contact 52 to break through the conical point 60 of the hollow outer body 48. Further rotation of the contact mounting 50 brings the tapered point 74 into contact with the copper core 12 of the cable as shown in figure 3.
- the broken pieces 60a, 60b of the conical point 60 are pushed away from the contact 50 such that any debris which has accumulated on the conical point 60 during its passage through the outer layers of the cable, and any strands of the copper braiding 18 of the cable shield, do not come into contact with either the tapered point 74 of the contact or the copper core of the cable.
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
- Multi-Conductor Connections (AREA)
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
Abstract
The connector (22) comprises a two part connector housing (24, 26) which receives and holds a cable portion (10). A contact assembly (44) movably mounted within the housing (24) comprises a hollow outer body (48) of non-conductive material and a conductive contact (52) mounted within the hollow outer body (48) and movable lengthwise within it. The hollow outer body (48) has a tapered penetrable end portion (60) which, when the hollow outer body (48) is moved relative to the housing (24), penetrates at least the outer covering of a received cable portion (10). Following penetration of the cable by the penetrable end portion (60), the contact (52) is advanced to break through the end portion (60) and establish electrical contact with the cable central conductor. Where the cable portion is a coaxial cable, conductive knife blades (36) may be provided to penetrate the outer casing of the cable and establish electrical contact with the outer conductor thereof.
Description
- The present invention relates to electrical connectors and in particular to connectors having a contact probe which penetrates the outer layers of a cable to make electrical contact with a central conductor.
- The present invention has particular application when used with coaxial cables, to provide an electrical tap connection to the central conductor thereof, although it is not limited to such use.
- A particular problem associated with tapping connectors is that of preventing the probe contact from becoming dirty as it is driven through the outer layers of a cable prior to making contact with the central conductor. Dirt collected on the probe contact surface can result in a poor electrical connection. between the probe and conductor. The problem is particularly acute in data communication networks using coaxial cable. In addition to the need to maintain good electrical contact to avoid degradation of signals entering or leaving the cable via the tap connection, the earthed outer shield of the cable must not be allowed to contact either the central conductor or the probe of the tapping connector. Many coaxial cables have an outer shield of braided copper wire and, as the probe is forced through the shield, strands of the copper wire may be carried along with the probe and into contact with the central conductor.
- One coaxial tap connector which attempts to overcome these problems is described in U.S. patent no. 4437722 (Bianchi). Each of the two probes used (one probe entering from either side of a cable) has a tapered dielectric body with a metal tip. This is to ensure that, when in position with the metal tip of the probe in contact with the central conductor, the outer surface of the probe in contact with braided outer conductor is non-conductive such that the probe does not provide a short circuit path between the central and outer conductors. It is a particular feature of US 4437722 that the outer body of the probe is with with no ridges or projections at the junction of the metal tip and the dielectric body. By use of such a probe contact, the connector of US 4437722 seeks smooth penetration of the outer layers of a coaxial cable such that the outer braided conductor is not pushed inwards into contact with the central conductor.
- Another coaxial tap connector which attempts to overcome such problems is described in European patent specification EP-A-0109229. In a first embodiment, a spring-biased probe contact is rotated as it is driven through the outer layers of a coaxial cable to "wipe" the probe contact surface in order to prevent the build up of debris thereupon. In a second embodiment, the outer surface of the probe contact is provided with a self-tapping screw thread such that the probe threads its way through the outer layers of the cable rather than being pushed through. The probe contact of the second embodiment is again spring-biased and, as it is rotated to screw it into the cable, the probe and thread surfaces are "wiped" to prevent the build up of debris. As with the probe contact of US 4437722, those of EP-A-0109229 are in the form of a dielectric body with a metal tip.
- In order to prevent these probes picking up debris or dragging the outer layers of the cable with them as they are inserted, the probes should be manufactured with surfaces as smooth as possible. This however requires great precision and care in manufacture.
- In accordance with the present invention there is provided an electrical connector comprising a connector housing, adapted to receive and constrain a cable portion, and a contact assembly, the contact assembly comprising a hollow outer casing of non-conductive material movable relative to the connector housing to penetrate at least the outer covering of a cable portion constrained by the housing, and a contact of conductive material mounted within the hollow outer casing and movable lengthwise within it, the hollow outer casing having a penetrable end portion at least substantially closing the end thereof, and the contact being movable within the hollow outer casing to break through the said end portion, when the hollow outer casing has penetrated at least the outer covering of a cable constrained by the housing, to make electrical contact with the central conductor of the cable portion.
- The penetrable end portion of the hollow outer casing may smoothly taper to a point to provide improved penetration of the outer layer or layers of the cable portion being tapped, and the contact mounted within the hollow outer casing may be movable to break through the hollow outer casing at that tapered point. The pentrable end portion is preferably configured such that, when the contact breaks through it, the broken parts of the penetrable end portion move away from the contact.
- Where the cable to be tapped is a coaxial cable, the connector may include means, such as conductive knife blades mounted within the connector housing, to penetrate the outer casing of the coaxial cable and make electrical contact with the outer conductor of the cable.
- The connector housing may include resilient means positioned to urge a received cable against the contact assembly.
- The electrical connector of the present invention overcomes the problems of debris collection described above with reference to the prior art devices by the use of the non-conductive hollow outer casing around the tap connector contact. Debris collected during penetration of the outer layers of a cable will accumulate on the outer surface of the penetrable end portion of the hollow outer casing. When the contact breaks through the hollow outer casing, preferably at a point adjacent the cable central conductor, the broken parts of the penetrable end portion and the collected debris will be pushed away from the contact thereby minimising the amount of dirt and debris which the contact may collect on its way to the cable central conductor.
- Rotation of the hollow outer casing as it penetrates the outer layer or layers of the cable may assist in reducing the amount of debris collected in a similar manner to the rotated contact described in EP-A-0109229 referred to above.
- One particular preferred embodiment will now be described, by way of example only, with reference to the accompanying drawings in which:
- Figure 1 is a partially sectioned elevation of a portion of a coaxial cable tap connector embodying the present invention;
- Figure 2 shows the position, relative to a tapped coaxial cable, of an earth shield contact used in the connector of figure 1;
- Figure 3 is a sectional elevation of a part of the connector of figure 1 with the central conductor contact inserted in a coaxial cable; and
- Figure 4 is a reduced scale perspective view of the connector of figure 1 attached to a coaxial cable.
- Referring initially to figure 2, a
coaxial cable 10 consists of acentral conductor 12 in the form of a copper core around which is a layer of polytetrafluoroethane (PTFE)insulation material 14. Radially outward of the layer ofinsulation material 14 are layers ofpolar film 16,copper braiding 18, and an outer layer ofinsulation material 20 respectively. - The coaxial
cable tap connector 22 of the present invention is shown in figures 1 and 4. - The
connector 22 has a two part housing comprising abody portion 24 and aconcave cover 26. Thebody 24 has an upper surface 28 which the edges of thecover 26 abut.Resilient tongues 30 extending from the upper surface 28 engage alip 32 on the inner surface of thecover 26 to hold thecover 26 against the upper surface 28. The end of theresilient tongues 30 and thelip 32 are chamfered (as shown in figure 1) such that thecover 26 has a snap-fit engagement with thebody 24. Aridge 34 adjacent the edge of the upper surface 28 locates the edges of thecover 26 relative to thebody 24. - The
cover 26 and upper surface 28 define an aperture therebetween in which acoaxial cable 10 is received. On either side of the aperture, extending perpendicular to the upper surface 28, areconductive knife blades 36. The spacing of theknife blades 36 is less than the outer diameter of the coaxial cable layer of copper braiding 18 such that, when acable 10 is pressed into the gap between theknife blades 36, they cut through theouter insulation 20 of the cable and make electrical connection with the layer of copper braiding 18. - The relative positions of a
knife blade 36 and constrainedcable 10 are shown in figure 2. As can also be seen from figure 2 theknife blade 36 has anelongated portion 38 extending therefrom to which electrical connection may be made. - Returning to figure 1, the inner surface of the
cover 26 has threeridges cable 10. Theridges outer ridges 42 extend further from thecover 26 than does thecentral ridge 40 such that, in addition to pressing thecable 10 against the upper surface 28, the threeridges - A
contact assembly 44 is mounted below the upper surface 28 and is movable through anaperture 46 therein. Thecontact assembly 44 comprises a hollowouter casing 48, a contact mounting 50 and aconductive contact 52. A part of theouter surface 54 of the hollow outer casing is threaded and engages a corresponding threaded bore on theinternal surface 56 of acylindrical extension 58 below the upper surface 28 and about theaperture 46 therein. - At the end adjacent the
cover 26, the hollowouter casing 48 tapers to aconical point 60. With thecontact assembly 44 in a retracted position (not shown) theconical point 60 of the hollow outer body lies below the level of the upper surface. - Due to the engagement of the threaded
portions outer casing 48 in a first sense causes theconical point 60 to protrude above the level of the upper surface 28. - With a
cable 10 held in position against the upper surface 28, rotation of the hollowouter body 48 causes theconical point 60 to penetrate theouter layers conical point 60 penetrates the layer ofPTFE insulation material 14 around thecopper core 12 of thecoaxial cable 10. As shown in figure 1, the depth of penetration is limited by the engagement of ashoulder 62 on the hollowouter body 48 with therim 64 of thecylindrical extension 58. To assist with rotation of the hollowouter body 48, itsouter surface 66 at the opposite end to theconical point 60 is hexagonal in form to allow use of sockets or box spanners to rotate it. - Within the hollow
outer body 48 is the contact mounting 50 which holds theconductive contact 52. Theouter surface 68 of thecontact mounting 50 is threaded and engages acorresponding thread 70 on the inner surface of the hollowouter body 48. Movement of the contact mounting 50 and contact 52 relative to the hollowouter body 48 is achieved by rotation of thecontact mounting 50. A profiledaperture 72 is provided in the lower end of thecontact mounting 50 allowing the insertion of a suitably shaped tool to engage the contact mounting 50 and rotate it. - The
conductive contact 52 is shrouded by the contact mounting 50 over its upper portion with the exception of a taperedpoint 74 at its upper end. When theconical point 60 of hollow outer body is being pushed through the outer layers of a cable, the taperedpoint 74 of thecontact 52 is positioned in a correspondingly shaped aperture within theconical point 60. - When the
conical point 60 has penetrated the cable to the required depth, the contact mounting 50 is rotated within the hollowouter body 48. This rotation causes the taperedpoint 74 of thecontact 52 to break through theconical point 60 of the hollowouter body 48. Further rotation of the contact mounting 50 brings the taperedpoint 74 into contact with thecopper core 12 of the cable as shown in figure 3. - Once the tapered
point 74 of the contact has broken through, thebroken pieces conical point 60 are pushed away from thecontact 50 such that any debris which has accumulated on theconical point 60 during its passage through the outer layers of the cable, and any strands of thecopper braiding 18 of the cable shield, do not come into contact with either the taperedpoint 74 of the contact or the copper core of the cable. - By minimising the number of layers of material through which the tapping contact must pass on its way to the cable central conductor, the likelihood of dirt accumulating on the contact and causing a bad electrical connection to the cable conductor is greatly reduced.
Claims (6)
- An electrical connector comprising a connector housing (24, 26), adapted to receive and constrain a cable portion (10), and a contact assembly (44), characterised in that the contact assembly (44) comprises a hollow outer casing (48) of non-conductive arterial movable relative to the connector housing (24, 26) to penetrate at least the outer covering (20) of a cable portion (10) constrained by the housing (24, 26), and a contact (52) of conductive arterial mounted within the hollow outer casing (48) and movable lengthwise within it, the hollow outer casing (48) having a penetrable end portion (60) at least substantially closing the end thereof, and the contact (52) being movable within the hollow outer casing (48) to break through the said end portion (60) when the hollow outer casing (48) has penetrated at least the outer covering (20) of a cable (10) constrained by the housing, to make electrical contact with the central conductor (12) of the cable portion (10) .
- An electrical connector according to claim 1 in which the penetrable end portion (60) is so shaped that, as the contact (52) breaks through it, the broken parts (60a,60b)of the penetrable end portion are moved away from the contact (52).
- An electrical connector according to claim 1 or claim 2, wherein the penetrable end portion (60) is a conical shell and the contact (52) breaks through substantially at the point thereof.
- An electrical connector according to any of claims 1 to 3 wherein the connector housing (24, 26) is adapted to receive and constrain a coaxial cable portion (10) and comprising means (36) for penetrating the outer casing (20) of the coaxial cable portion (10) to make electrical contact with the outer conductor (18) thereof.
- An electrical connector according to claim 4, wherein the said means for penetrating the outer casing (20) of the coaxial cable portion (10) comprise a pair of opposed, conductive knife blades (36), the spacing of the knife blades (36) being less than the outside diameter of the coaxial cable portion outer conductor (18).
- An electrical connector according to any preceding claim, wherein the connector (24, 26) housing includes resilient means (40,42) positioned to urge a received cable (10) against the contact assembly (44).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9013948A GB2245434A (en) | 1990-06-22 | 1990-06-22 | Cable tapping connector. |
GB9013948 | 1990-06-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0463824A1 true EP0463824A1 (en) | 1992-01-02 |
Family
ID=10678042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91305649A Withdrawn EP0463824A1 (en) | 1990-06-22 | 1991-06-21 | Cable tapping connector |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0463824A1 (en) |
JP (1) | JPH04357677A (en) |
GB (1) | GB2245434A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1178571A2 (en) * | 2000-07-31 | 2002-02-06 | FINCANTIERI CANTIERI NAVALI ITALIANI S.p.A. | Improvements in devices and methods for electrical and signal distribution, particularly in shipping environments |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104917015B (en) * | 2015-03-09 | 2018-02-02 | 济南新盛电子科技有限公司 | A kind of normalized intelligent domestic meter communication circuit |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0038144A2 (en) * | 1980-04-10 | 1981-10-21 | AMP INCORPORATED (a New Jersey corporation) | Coaxial tap-connector |
EP0109229A1 (en) * | 1982-11-03 | 1984-05-23 | AMP INCORPORATED (a New Jersey corporation) | Coaxial cable tap connector |
DE3709841A1 (en) * | 1987-01-27 | 1988-10-06 | Rema Lipprandt Gmbh Co Kg | Cable-branching terminal and fully insulated branch of a cable from a main cable bonded under voltage |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3836941A (en) * | 1973-07-05 | 1974-09-17 | Thomas & Betts Corp | Electrical connector with resilient pressure pad |
US4215908A (en) * | 1978-12-15 | 1980-08-05 | Cathodic Protection Services, Inc. | Arcless clamp connector |
EP0270276A1 (en) * | 1986-11-14 | 1988-06-08 | Advanced Scientific Corporation | Circuit testing device |
-
1990
- 1990-06-22 GB GB9013948A patent/GB2245434A/en not_active Withdrawn
-
1991
- 1991-06-21 EP EP91305649A patent/EP0463824A1/en not_active Withdrawn
- 1991-06-24 JP JP3151806A patent/JPH04357677A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0038144A2 (en) * | 1980-04-10 | 1981-10-21 | AMP INCORPORATED (a New Jersey corporation) | Coaxial tap-connector |
EP0109229A1 (en) * | 1982-11-03 | 1984-05-23 | AMP INCORPORATED (a New Jersey corporation) | Coaxial cable tap connector |
DE3709841A1 (en) * | 1987-01-27 | 1988-10-06 | Rema Lipprandt Gmbh Co Kg | Cable-branching terminal and fully insulated branch of a cable from a main cable bonded under voltage |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1178571A2 (en) * | 2000-07-31 | 2002-02-06 | FINCANTIERI CANTIERI NAVALI ITALIANI S.p.A. | Improvements in devices and methods for electrical and signal distribution, particularly in shipping environments |
EP1178571A3 (en) * | 2000-07-31 | 2002-04-03 | FINCANTIERI CANTIERI NAVALI ITALIANI S.p.A. | Improvements in devices and methods for electrical and signal distribution, particularly in shipping environments |
Also Published As
Publication number | Publication date |
---|---|
JPH04357677A (en) | 1992-12-10 |
GB2245434A (en) | 1992-01-02 |
GB9013948D0 (en) | 1990-08-15 |
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