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US2651768A - Electrical terminal having conductor-severing edge - Google Patents

Electrical terminal having conductor-severing edge Download PDF

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Publication number
US2651768A
US2651768A US16776A US1677648A US2651768A US 2651768 A US2651768 A US 2651768A US 16776 A US16776 A US 16776A US 1677648 A US1677648 A US 1677648A US 2651768 A US2651768 A US 2651768A
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United States
Prior art keywords
conductor
terminal
tool
severing edge
slit
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Expired - Lifetime
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US16776A
Inventor
Oortgijsen Jan
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Individual
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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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/01—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for connecting unstripped conductors to contact members having insulation cutting edges
    • H01R43/015—Handtools
    • 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
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/2445—Connections 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
    • H01R4/2458—Connections 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 tubular configuration, e.g. slotted tube-end
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y10T24/3916—One-piece
    • Y10T24/3918—Wedge slot
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7001—Crossed rods
    • Y10T403/7003—One rod is encompassed by the other

Definitions

  • This invention relatesto an electrical terminal having gaps for the reception of the conductor and a conductor-severing edge.
  • the consecutive gaps of the terminal have different depths adapted to receive an electrical conductor, the gap of lesser depth defining a severing edge arranged to be engaged by the conductor lying in the gap and adapted to cooperate with the severi'ng edge of a complementary tool receivable on said terminal to engage slidably the severing edge in such a way that when the conductor or the conductors are pressed into the slit or slits of the terminal the waste end of each conductor projecting from the terminal is cut off.
  • a conductor is firmly brought into position in one operation, whereby it makes a good contact with the contact rims of the terminal,- and is simul taneously cut off at the proper point.
  • the tool may be made in such a way that the above-mentioned operations may also be executed reliably at points which are not easily accessible.
  • the terminal may be provided with a slit portion widening at least towards the outside of the slit where the free end of each conductor is disposed.
  • a head is shaped outside the narrow slit portion whereby the conductor will be held more firmly in the terminal.
  • the tool and/ or the terminal according to the invention may be provided with guiding means formed in various ways and insuring that the cutting means always act upon the desired point and in the desired way.
  • two consecutive gaps may be formed in an annular member extending from the base of the terminal, the annular member being provided with aligned slits of different depths extending through the walls thereof, the slit of lesser depth defining a severing dg w th t e u er surface of said annular member.
  • the tool to be applied with this embodiment for inserting an electrical conductor in the aligned slits may have an annular recess for receiving the annular member, one wall of the recess defining a severing edge for engaging the severing edge of the terminal for cutting off the end of an electrical conductor extending from the slit of lesser depth upon downward movement of the tool upon the member for inserting the conductor.
  • Figure 1 shows part'of a terminal with two slits and the corresponding tool.
  • Figure 2 is a cross section along the line II-II of Figure 1.
  • Figure 3 represents a terminal as shown in Figure 1, in which the slits have bevelled edges.
  • Figure 4 is a cross section along the line IVIV of Figure 3.
  • the terminal according to Figures 1 and 2 comprises a cylindrical body I provided with a recess ,2 and two slits 3 and 4 of different depths.
  • the tool 5 cooperating with said terminal is provided with a central pin 6 which can penetrate in the recess 2.
  • the tool 5 further has a concentric jacket 1 which may fit around the terminal I. Said jacket 1 serves as a cutting jaw for cutting off the waste end 8 of the conductor 9.
  • the bottom of the slit 3 with the smallest depth serves as a cutting jaw cooperating therewith.
  • the slits 3 and 4 are bevelled so that slit portions 3 and 4' which widen towards the outside are obtained.
  • the indentations pressed in the conductor are also bevelled, the conductor 9 maintaining at its free end after being cut off a head 9 which may contribute to receiving traction load.
  • the terminal and/ or the tool may form part of an electrical apparatus, or may be incorporated in said apparatus.
  • the apparatus may then have the tool attached to its cover, for example, or the tool may be operated thereby.
  • the wires need only be laid in the entrance of the terminal and they are then automatically inserted and cut off when the cover is brought into position.
  • the tool may also back the legs of the terminal in order to prevent an outward yielding to the reaction forces when the conductor is pressed into the terminal.
  • Such a backing is of special importance at the beginning of bringing the conductor into the terminal since then the momentum tending to make the slit wider is maximum.
  • the terminal may be designed less strong, consequently economising materials.
  • a more'powerful deformation of conductors may be permitted whereby a given terminal may suit a larger series of wire gauges.
  • a terminal for an electrical conductor comprising a base, a plurality of consecutive pairs of gap-forming members, each pair defining a gap therebetween for receiving a: conductor, at least one of said members presenting a straight contact edge facing the other member of said pair, said consecutive gaps having different depths adapted to receive an electrical conductor, the gap of least depth defining a severing edge arranged to be engaged by the conductor lying in said gap and adapted to cooperate with the severing edge of a complementary tool receivable on said terminal to slidably engage'said'severing edge.
  • a terminal for an. electrical conductor comprising a base. and an annular member extending from said base, said annular member being pro vided with aligned slits of diiierent depths extending through the walls thereof, the slit oi lesser depth defining a severing edgewith the outer surface of said annular member.
  • a terminal for an: electrical conductor comprising a base and an annular member extending from said base, said annular member bein provided with aligned slitsof different depths extending through the walls thereof, the slit of lesser depth defining a severing edge with the outer surface of said annular member, and a tool for inserting an electrical conductor in said aligned slits, said tool having an annular recess for receiving said annular member, one wall of said recess defining a severing edge for engaging the severing edge of said terminal for cutting off the end oi. an: electricak conductor: extending from said slit oft lesser depth. upon. downward movement of said tool upon said member for inserting said conductor.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Description

Sept. 8, 1953 J. OORTGIJSEN 2,651,768
ELECTRICAL TERMINAL HAVING CONDUCTOR-SEVERING EDGE q Filed March 24, 1948 I I/VI/E/VTOK JAN OORTGIJSEN i 47 Tom 5r Patented Sept. 8, 1953 OFFICE ELECTRICAL TERMINAL HAVING CONDUCTOR-SEVERING EDGE Jan Oortgijsen, Rijswijk, Netherlands Application March 24, 1948, Serial No. 16,77 6
. I In the Netherlands April 2, 1947 4 Claims.
This invention relatesto an electrical terminal having gaps for the reception of the conductor and a conductor-severing edge.
When connecting conductorsto terminals the waste end of the conductors projecting beyond the contacts often has to be removed. In signalling and like installations, when uncovered conductors are to be connected to terminals, the, waste end is often removed by moving the free conductor end to and fro until it breaks 01f. This L operation takes much time however. Furthermore the terminals are not always accessible to permit this to be done. When the ends of the conductors are cut off with pliers this also represents an additional operation,
These disadvantages are avoided according to the invention by the fact that the consecutive gaps of the terminal have different depths adapted to receive an electrical conductor, the gap of lesser depth defining a severing edge arranged to be engaged by the conductor lying in the gap and adapted to cooperate with the severi'ng edge of a complementary tool receivable on said terminal to engage slidably the severing edge in such a way that when the conductor or the conductors are pressed into the slit or slits of the terminal the waste end of each conductor projecting from the terminal is cut off. Hereby a conductor is firmly brought into position in one operation, whereby it makes a good contact with the contact rims of the terminal,- and is simul taneously cut off at the proper point. Furthermore the tool may be made in such a way that the above-mentioned operations may also be executed reliably at points which are not easily accessible.
According to the invention the terminal may be provided with a slit portion widening at least towards the outside of the slit where the free end of each conductor is disposed. Hereby a head is shaped outside the narrow slit portion whereby the conductor will be held more firmly in the terminal.
The tool and/ or the terminal according to the invention may be provided with guiding means formed in various ways and insuring that the cutting means always act upon the desired point and in the desired way.
In an advantageous embodiment two consecutive gaps may be formed in an annular member extending from the base of the terminal, the annular member being provided with aligned slits of different depths extending through the walls thereof, the slit of lesser depth defining a severing dg w th t e u er surface of said annular member. The tool to be applied with this embodiment for inserting an electrical conductor in the aligned slits may have an annular recess for receiving the annular member, one wall of the recess defining a severing edge for engaging the severing edge of the terminal for cutting off the end of an electrical conductor extending from the slit of lesser depth upon downward movement of the tool upon the member for inserting the conductor.
The invention will be explained more fully below with reference to the drawings representing by way of example two embodiments of the terminal and an embodiment of the tool.
Figure 1 shows part'of a terminal with two slits and the corresponding tool.
Figure 2 is a cross section along the line II-II of Figure 1.
Figure 3 represents a terminal as shown in Figure 1, in which the slits have bevelled edges.
Figure 4 is a cross section along the line IVIV of Figure 3.
The terminal according to Figures 1 and 2 comprises a cylindrical body I provided with a recess ,2 and two slits 3 and 4 of different depths. The tool 5 cooperating with said terminal is provided with a central pin 6 which can penetrate in the recess 2. The tool 5 further has a concentric jacket 1 which may fit around the terminal I. Said jacket 1 serves as a cutting jaw for cutting off the waste end 8 of the conductor 9. The bottom of the slit 3 with the smallest depth serves as a cutting jaw cooperating therewith.
In the terminal according to the Figures 3 and 4 the slits 3 and 4 are bevelled so that slit portions 3 and 4' which widen towards the outside are obtained. Hereby the indentations pressed in the conductor are also bevelled, the conductor 9 maintaining at its free end after being cut off a head 9 which may contribute to receiving traction load.
According to the invention the terminal and/ or the tool may form part of an electrical apparatus, or may be incorporated in said apparatus. The apparatus may then have the tool attached to its cover, for example, or the tool may be operated thereby. Then the wires need only be laid in the entrance of the terminal and they are then automatically inserted and cut off when the cover is brought into position. However, it is also possible to locate the tool in the apparatus, for example at the base thereof, and to fix the terminal to the cover.
Furthermore it is stated that the tool may also back the legs of the terminal in order to prevent an outward yielding to the reaction forces when the conductor is pressed into the terminal. Such a backing is of special importance at the beginning of bringing the conductor into the terminal since then the momentum tending to make the slit wider is maximum. Hereby the terminal may be designed less strong, consequently economising materials. On the other hand a more'powerful deformation of conductors may be permitted whereby a given terminal may suit a larger series of wire gauges.
I claim:
1. A terminal for an electrical conductor, comprising a base, a plurality of consecutive pairs of gap-forming members, each pair defining a gap therebetween for receiving a: conductor, at least one of said members presenting a straight contact edge facing the other member of said pair, said consecutive gaps having different depths adapted to receive an electrical conductor, the gap of least depth defining a severing edge arranged to be engaged by the conductor lying in said gap and adapted to cooperate with the severing edge of a complementary tool receivable on said terminal to slidably engage'said'severing edge.
2. A terminal for an. electrical conductor comprising a base. and an annular member extending from said base, said annular member being pro vided with aligned slits of diiierent depths extending through the walls thereof, the slit oi lesser depth defining a severing edgewith the outer surface of said annular member.
3. A terminal for an: electrical conductor comprising a base and an annular member extending from said base, said annular member bein provided with aligned slitsof different depths extending through the walls thereof, the slit of lesser depth defining a severing edge with the outer surface of said annular member, and a tool for inserting an electrical conductor in said aligned slits, said tool having an annular recess for receiving said annular member, one wall of said recess defining a severing edge for engaging the severing edge of said terminal for cutting off the end oi. an: electricak conductor: extending from said slit oft lesser depth. upon. downward movement of said tool upon said member for inserting said conductor.
4. A terminal for an electrical conductor as defined. in; claim 2 wherein the slits are provided with bevelled exterior edges JAN OORTGIJSEN.
References Cited in the file of this patent UNITED STATES PATENTS Number Name- Date 357,718 Lee Feb. 15, 1887 421,874 Spring Feb. 18, 1690 532,053 Hafer" Jan. 8, 1895 1,315,317 Leteicq Sept. 9, 1919 1,488,636 Gei'ser Apr. 1, 1924 1,977,677 Hill Oct. 23, 1934 2,185,382 Newton Jan. 2, 1940 2,257,679 Hamby' Sept. 30, 1941 2,267,449" Eby Dec. 23, 1911 2,328,747 schweid-l'er Sept. 7, 1943 2,333,266 Miller Nov. 2, 1943 2,397,086- Brady Mar. 26, 1946 2,430,733 Pairsorr Nov. 11, 1947 2,456,601 Weisberg Dec. 14., 1948 2,476,227 Sellers -1 July 12, 1949 2,518348'9 Orlandcr Aug, 15, 1950
US16776A 1947-04-02 1948-03-24 Electrical terminal having conductor-severing edge Expired - Lifetime US2651768A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027536A (en) * 1958-12-05 1962-03-27 Bell Telephone Labor Inc Insulation stripping wire connector
US3168750A (en) * 1963-01-17 1965-02-09 Ingersoll Rand Co Wire inserting and cutting device
US3202957A (en) * 1962-04-30 1965-08-24 Minnesota Mining & Mfg Wire-cutting solderless connector
US3257635A (en) * 1964-01-20 1966-06-21 Amp Inc Electrical connections
US3604092A (en) * 1969-10-27 1971-09-14 Dynamic Tool And Mfg Co Inc Th Connecting tool
US3611262A (en) * 1969-02-06 1971-10-05 Amp Inc Electrical connector having integral wire severing means
US3848954A (en) * 1973-06-06 1974-11-19 Reliable Electric Co Clip terminal and applicator tool combination
US3897993A (en) * 1974-05-08 1975-08-05 Amp Inc Wire connecting device having improved wire trimming means
US3902780A (en) * 1973-12-10 1975-09-02 Amp Inc Electrical connecting device for insulated wires
US4168873A (en) * 1978-04-03 1979-09-25 Luna L Jack Wire connections to board terminals
US4210378A (en) * 1979-04-23 1980-07-01 Minnesota Mining And Manufacturing Company Electrical wire connection
FR2498822A1 (en) * 1981-01-28 1982-07-30 Bonhomme F R SELF-CONDUCTING ELECTRICAL CONTACT, METHOD FOR MANUFACTURING THIS CONTACT AND CONNECTORS INCLUDING THIS CONTACT, IN PARTICULAR FOR TABLECLOTH CABLES
US4448472A (en) * 1981-09-16 1984-05-15 At&T Technologies, Inc. Slotted, substantially rigid multi-conductor electrical connector
US4781618A (en) * 1987-06-25 1988-11-01 Reed Devices, Inc. Pushbutton electrical terminal
WO1995026873A1 (en) * 1994-03-31 1995-10-12 Glynwed Plastics Ltd. Improvements in or relating to electrofusion couplers
US7077687B1 (en) * 1999-11-05 2006-07-18 Vera Feistkorn Connecting device to be soldered to circuit boards for connection of electrical conductors, a method for production of the connecting device and a device for connecting conductors to the connecting device

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US357718A (en) * 1887-02-15 Hair-clipping machine
US421874A (en) * 1890-02-18 Peters
US532053A (en) * 1895-01-08 String-clamp for musical instruments
US1315317A (en) * 1919-09-09 Device toe joining electrical cokductors
US1488636A (en) * 1920-05-24 1924-04-01 Geiser John Albert Wire connecter
US1977677A (en) * 1930-09-27 1934-10-23 Western Electric Co Electrical connecter
US2185382A (en) * 1934-01-22 1940-01-02 New York Air Brake Co Apparatus for making piston rings
US2257679A (en) * 1939-11-22 1941-09-30 Hamby Allan Mcp Circuit closer
US2267449A (en) * 1940-06-29 1941-12-23 Hugh H Eby Contact making wire clamp
US2328747A (en) * 1935-12-06 1943-09-07 Schweidler Hubert Cutting and shaping tool
US2333266A (en) * 1941-06-30 1943-11-02 James B Miller Emergency wire connector
US2397086A (en) * 1943-09-27 1946-03-26 Gear Grinding Mach Co Method and apparatus for cutting keyways
US2430733A (en) * 1944-02-07 1947-11-11 Continental Oil Co Device for removing tubes from heat exchange assemblies
US2456601A (en) * 1945-12-13 1948-12-14 Allied Electric Products Inc Solderless contact terminal
US2476227A (en) * 1947-11-06 1949-07-12 Ira G Sellers Electric plug
US2518489A (en) * 1944-11-17 1950-08-15 Orlando Carl Binding post

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US421874A (en) * 1890-02-18 Peters
US532053A (en) * 1895-01-08 String-clamp for musical instruments
US1315317A (en) * 1919-09-09 Device toe joining electrical cokductors
US357718A (en) * 1887-02-15 Hair-clipping machine
US1488636A (en) * 1920-05-24 1924-04-01 Geiser John Albert Wire connecter
US1977677A (en) * 1930-09-27 1934-10-23 Western Electric Co Electrical connecter
US2185382A (en) * 1934-01-22 1940-01-02 New York Air Brake Co Apparatus for making piston rings
US2328747A (en) * 1935-12-06 1943-09-07 Schweidler Hubert Cutting and shaping tool
US2257679A (en) * 1939-11-22 1941-09-30 Hamby Allan Mcp Circuit closer
US2267449A (en) * 1940-06-29 1941-12-23 Hugh H Eby Contact making wire clamp
US2333266A (en) * 1941-06-30 1943-11-02 James B Miller Emergency wire connector
US2397086A (en) * 1943-09-27 1946-03-26 Gear Grinding Mach Co Method and apparatus for cutting keyways
US2430733A (en) * 1944-02-07 1947-11-11 Continental Oil Co Device for removing tubes from heat exchange assemblies
US2518489A (en) * 1944-11-17 1950-08-15 Orlando Carl Binding post
US2456601A (en) * 1945-12-13 1948-12-14 Allied Electric Products Inc Solderless contact terminal
US2476227A (en) * 1947-11-06 1949-07-12 Ira G Sellers Electric plug

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027536A (en) * 1958-12-05 1962-03-27 Bell Telephone Labor Inc Insulation stripping wire connector
US3202957A (en) * 1962-04-30 1965-08-24 Minnesota Mining & Mfg Wire-cutting solderless connector
US3168750A (en) * 1963-01-17 1965-02-09 Ingersoll Rand Co Wire inserting and cutting device
US3257635A (en) * 1964-01-20 1966-06-21 Amp Inc Electrical connections
US3611262A (en) * 1969-02-06 1971-10-05 Amp Inc Electrical connector having integral wire severing means
US3604092A (en) * 1969-10-27 1971-09-14 Dynamic Tool And Mfg Co Inc Th Connecting tool
US3848954A (en) * 1973-06-06 1974-11-19 Reliable Electric Co Clip terminal and applicator tool combination
US3902780A (en) * 1973-12-10 1975-09-02 Amp Inc Electrical connecting device for insulated wires
US3897993A (en) * 1974-05-08 1975-08-05 Amp Inc Wire connecting device having improved wire trimming means
US4168873A (en) * 1978-04-03 1979-09-25 Luna L Jack Wire connections to board terminals
US4210378A (en) * 1979-04-23 1980-07-01 Minnesota Mining And Manufacturing Company Electrical wire connection
FR2498822A1 (en) * 1981-01-28 1982-07-30 Bonhomme F R SELF-CONDUCTING ELECTRICAL CONTACT, METHOD FOR MANUFACTURING THIS CONTACT AND CONNECTORS INCLUDING THIS CONTACT, IN PARTICULAR FOR TABLECLOTH CABLES
WO1982002627A1 (en) * 1981-01-28 1982-08-05 Francois Robert Bonhomme Self stripping electric contact,process for manufacturing such contact and connectors compresing such contact,paticularly for sheet cables
EP0057633A1 (en) * 1981-01-28 1982-08-11 François Robert Bonhomme Insulation stripping electrical contact, process of manufacturing or this contact and connectors comprising this contact, particularly for flat cables
US4448472A (en) * 1981-09-16 1984-05-15 At&T Technologies, Inc. Slotted, substantially rigid multi-conductor electrical connector
US4781618A (en) * 1987-06-25 1988-11-01 Reed Devices, Inc. Pushbutton electrical terminal
WO1995026873A1 (en) * 1994-03-31 1995-10-12 Glynwed Plastics Ltd. Improvements in or relating to electrofusion couplers
US5862585A (en) * 1994-03-31 1999-01-26 Glynwed Pipe Systems Limited Electrofusion couplers and method and apparatus for manufacturing
US7077687B1 (en) * 1999-11-05 2006-07-18 Vera Feistkorn Connecting device to be soldered to circuit boards for connection of electrical conductors, a method for production of the connecting device and a device for connecting conductors to the connecting device

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