US2816276A - Electrical connectors, method and apparatus - Google Patents
Electrical connectors, method and apparatus Download PDFInfo
- Publication number
- US2816276A US2816276A US402248A US40224854A US2816276A US 2816276 A US2816276 A US 2816276A US 402248 A US402248 A US 402248A US 40224854 A US40224854 A US 40224854A US 2816276 A US2816276 A US 2816276A
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- barrel
- indentations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- 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
- H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/20—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
- H01R43/058—Crimping mandrels
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- 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
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49925—Inward deformation of aperture or hollow body wall
- Y10T29/49927—Hollow body is axially joined cup or tube
- Y10T29/49929—Joined to rod
Definitions
- This invention relates to electrical connections and methods of making them and apparatus for use therewith, and more particularly to the type of connections which are pressure-forged onto electrical conductors (commonly referred to as crimped).
- the invention relates to electrical connections in which the connector is crimped onto an electrical conductor by the converging pressure of circumferentially spaced indenting dies.
- This invention contemplates the use of converging indenters of such width and number that the metal between them is dragged down with the adjoining indentations and cannot make a fold projecting beyond the circumference of the barrel before indenting.
- indenters may be used and six to eight are better. Eight is most advantageous.
- This multiple crimp has advantages over the old conventional type crimps where only two opposing dies compress the electrical connector onto an electrical conductor or where there are more than two converging dies but with said dies being spaced so that each makes a more or less independent indentation or pushes out a fold between adjacent indents.
- a further important feature of invention embodied in the herein described crimp is the skewed positioning of elongated indents and of the indenting edges of the dies which make them.
- the skewed crimp is especially advantageous in crimping a plug type electrical connector onto an electrical conductor.
- the crimped portion must not extend beyond the geometric surface of the plug, as it might mechanically prevent the plug from being fully inserted into the receiving member or electrically short circuit to nearby parts.
- This invention makes it feasible to confine all parts of the crimp within the geometric surface of the plug (i. e. extending the form of adjacent areas across the area of the crimp).
- the skewed crimp in this invention affords relatively great contact area between the electrical connector and electrical conductor, and relatively high pull out strength; ofiers great resistance to corrosion which keeps contact resistance low even in salt spray; distributes the pressure more evenly over the crimped portion, putting less strain "ice on the electrical conductor and thus resulting in less chance of failure in the conductor and also giving more consistent tensile properties.
- Even hard brass may be crimped without cracking, because of the generally circular shape of the crimped section free from acute bends.
- Figure 1 shows a plug type connector before crimping.
- Figure 2 shows an insulated conductor with the insulation stripped from its end and the conductor end folded back ready for insertion into the open end of the barrel of the terminal shown in Figure 1.
- Figure 3 shows the terminal after it has been crimped onto the conductor in accordance with my invention.
- Figure 4 shows a straight edge crimping die in a position just removed from a fully crimped plug barrel crimped by a plurality of such indenting dies. Only one die is shown for the sake of clarity but eight such dies converge simultaneously to make the crimp shown.
- Figure 5 is a view like that of Figure 4 but showing a crimping die with a concave edge.
- Figure 6 shows an enlarged cross section taken on line 66 of Figure 3. The location of the eight crimping dies in nearly converged positions are shown in Figure 6.
- Figure 7 is a section on line 77 of Figure 3 on the same scale as Figure 3.
- FIG 1 shows a plug barrel 21 formed from a flat piece of connector metal, e. g., quarter or half hard electrical copper or brass, with a butt seam 22 along its entire length. This seam has a tendency to distort and become misshapen when one of the ordinary crimps is used.
- the insulation is stripped from the end of the wire and the bared wire 25 is folded back over the insulation 26 preparatory to inserting it into the open end 23 of plug barrel 21.
- a small conductor may be crimped in a much larger plug connector without pre-shaping the plug connector.
- the bated end of the conductor may be in serted coaxially without bending.
- Figure 3 shows the completed connection with the skewed indentations 30.
- These indentations in the example shown are equally spaced, of about the proportions shown and the axis of each indent (i. e. the center line along the bottom of each indentation) makes an angle of approximately twenty-five degrees (25") with an axial plane of the barrel.
- This arrangement of indentations assures that the seam of the plug barrel will be crossed by at least one indentation without need for any special orientation of the plug in the dies. This advantage may be attained with curved or angular or even X indentations as well as sloping straight lines.
- the length of the indenting edges of the dies and their overlap relative to an axial plane of the barrel is such as to assure that at least one such die will extend substantially to both sides of the seam and engage the barrel on both sides of the seam.
- Figure 6 is a cross sectional view of the crimp 66 of Figure 3.
- seam 22 lies fiat in a closed condition.
- the folded over portion of the conductor is shown at 25 and the electrical contact with the connector is shown at 35.
- the conductor insulation and conductor wire, along with the folded .over portion, are tightly embraced and enclosed by connector 34.
- The. indentations are formed by dies 33 the location of which are shown by dashed lines. Eight dies were used to form the eight indentations so that a nearly round crimp could be obtained but this invention is not restricted to eight dies; although we have found significant advantage in the eight indent crimps as compared even with six or ten.
- this crimp makes a high quality connection without substantial enlargement or any diameter is regarded as most significant for some uses.
- all eight indentations 30 are placed so that their longitudinal axes 29 form approximately a twenty-five (25 degree angle with an axial plane of the wire. This angle may be varied, but if too nearly parallel to the conductor axis 23 it will assume the inferior character of a radial indentation; and if at too great an angle it will become a mere cross-crimp, losing the special advantage of the wringing action.
- it should always be crossed by at least one indentation which engages the ferrule firmly on both sides of the seam regardless of its orientation in the dies. Therefore, with a longer and/ or wider indentation a smaller angle may be used and still insure that the seam will be held closed.
- a preferred embodiment of this invention is to have the indentations conform to the curve of the plug barrel surface.
- This is shown in Figure 5 in which a concave edge 42 conforms to the surface of the plug barrel when initially contacted by the die.
- Such concavity is not circular but an arc of an ellipse because the plane of the indenter edge of the die intersects the plug barrel at an oblique angle.
- This has the advantage over the flat indentation of engaging the plug barrel from the first on both sides as well asat the center, thereby preventing spreading of the barrel or other distortion which might allow the seam to open.
- the entire curved die edge comes into contact with the plug barrel from the first moment of impact while a straight die edge would be touching only a point of tangency or a very small area of contact. Even with the straight edged die, however, it will engage opposite sides to give the wringing action, to an increasing extent as the indentation progresses.
- Figure 7 shows how the ends of the die edge push the metal of the plug barrel across the wire, giving better contact and twisting or wringing the plug barrel around the conductor wire. This wringing effect is also shown in Figure 3 where the seam is twisted in the crimped section, binding it tightly together.
- each indentation covers a larger arc of the electrical conductor circumference than does each indentation of former parallel radial indenters and therefore provides a greater transverse edge 31 to retard any longitudinal movement of the electrical conductor in relation to the plug terminal.
- a straight die edge used in the skew crimp of this invention has another advantage over known crimps. It produces an indent with maximum pressure on the conductor at the center and progressively less pressure toward the end of the indent. This is due to the straight edge skew die making its deepest impression on the barrel at the center of the barrel. This gradual decrease of pressure puts less strain on the wire, eliminates sharp shoulders that weaken the wire, especially when the wire is subject to vibration or tensile stress.
- an electrical connection of the type adapted to embrace an electric wire comprising a tubular metal barrel, a longitudinal seam along the outer surface of the barrel and a plurality of crimped indentations impressed in the outer surface of the barrel and extending around the barrel forming a constricted band, at least one of said indentations being set at an oblique angle with respect to the longitudinal seam.
- An electrical connector of the type adapted to embrace an electric wire comprising: a tubular metal barrel, a longitudinal seam along the outer surface of the barrel, and a plurality of crimped indentations impressed in the outer surface of the barrel and extending around the barrel forming a constricted band; each indentation being set at an oblique angle with respect to the longitudinal seam, and the indentations being of sufficient length and number that each indentation overlaps each of the respective indentations on either side of it.
- an electrical connection comprising an electrical conductor having an insulated body portion and a coextensive uninsulated end portion, said uninsulated end portion being folded back over the adjacent insulated portion, an electrical connector surrounding the uninsulated end portion and the coextending insulated body portion, said connector having a seam which extends longitudinally of the electrical conductor, said connector having indentations impressed on the outer surface thereof securing the connector on the conductor, and said indentations being generally similar and extending helically so as to form oblique angles with the longitudinal axis of the connector.
- the method of crimping the bare end of an electric wire within a connector having a seam running longitudinally of the wire which includes inserting the bare end of the wire into the connector and crimping the connector onto the Wire with a plurality of indentations so that each indentation is at an angle to the longitudinal axis of the wire and at least one of the indentations forms an oblique angle with and crosses the seam.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Description
Dec. 10,1957
G. A. FULLER ETAL ELECTRICAL CONNECTORS, METHOD AND APPARATUS Fig-Z Filed Jan. 5, 1954 INVENTOR. GLENWOOD ARTHUR FULLER ROBERT ULLMAN BY m, hm phi/n4 United States Patent ELECTRICAL CONNECT QRS, METHOD AND APPARATUS Glenwood Arthur Fuller, Elizabethtown, and Robert Ullman, Harrisburg, Pa., assignors to AMP Incorporated, a corporation of New Jersey Application January 5, H54, Serial No. 402,248
6 Claims. (Cl. 339-276) This invention relates to electrical connections and methods of making them and apparatus for use therewith, and more particularly to the type of connections which are pressure-forged onto electrical conductors (commonly referred to as crimped).
More particularly the invention relates to electrical connections in which the connector is crimped onto an electrical conductor by the converging pressure of circumferentially spaced indenting dies.
This invention, embodied in the above described type of crimp, contemplates the use of converging indenters of such width and number that the metal between them is dragged down with the adjoining indentations and cannot make a fold projecting beyond the circumference of the barrel before indenting. In general, from five to ten indenters may be used and six to eight are better. Eight is most advantageous. This multiple crimp has advantages over the old conventional type crimps where only two opposing dies compress the electrical connector onto an electrical conductor or where there are more than two converging dies but with said dies being spaced so that each makes a more or less independent indentation or pushes out a fold between adjacent indents.
A further important feature of invention embodied in the herein described crimp is the skewed positioning of elongated indents and of the indenting edges of the dies which make them. The skewed crimp is especially advantageous in crimping a plug type electrical connector onto an electrical conductor. Generally, in this type of use the crimped portion must not extend beyond the geometric surface of the plug, as it might mechanically prevent the plug from being fully inserted into the receiving member or electrically short circuit to nearby parts. This invention makes it feasible to confine all parts of the crimp within the geometric surface of the plug (i. e. extending the form of adjacent areas across the area of the crimp).
An importantadvantage of this skewed crimp is that opposite ends of each indenting edge engage the barrel along chords which are respectively on opposite sides of a diameter., Thus, the indenters do not merely push down an area of the barrel, bending it inward, but exert a smearing or trowelling effect forcing the metal against and into the wire by plastic flow. Moreover, because 0pposite ends of the die edge engage opposite sides of the barrel at longitudinally spaced positions they exert a twisting or wringing action on the barrel which tends to wrap it more tightly on the wire by a tensile action. Along each indent the metal is thus under tensile stress at the same time that it is subjected to the compressive action of the indenters and this combined stress produces a unique action.
The skewed crimp in this invention affords relatively great contact area between the electrical connector and electrical conductor, and relatively high pull out strength; ofiers great resistance to corrosion which keeps contact resistance low even in salt spray; distributes the pressure more evenly over the crimped portion, putting less strain "ice on the electrical conductor and thus resulting in less chance of failure in the conductor and also giving more consistent tensile properties. Even hard brass may be crimped without cracking, because of the generally circular shape of the crimped section free from acute bends.
Other objects and important features of the invention, will appear in the following description and claims.
Although in the accompanying drawings we have shown a preferred embodiment of our invention and have described the same and various modifications thereof in this specification, it is to be understood that these are not intended to be either exhaustive or limiting of the invention, but, on the contrary, are chosen for the purposes of illustrating the invention in order that others skilled in the art may so fully understand the invention, its principles and the application thereof, that they may embody it and adapt it in numerous forms, each as may be best suited to the requirements of its particular use.
In the accompanying drawings a preferred embodiment of the present invention is set forth.
In these drawings:
Figure 1 shows a plug type connector before crimping.
Figure 2 shows an insulated conductor with the insulation stripped from its end and the conductor end folded back ready for insertion into the open end of the barrel of the terminal shown in Figure 1.
Figure 3 shows the terminal after it has been crimped onto the conductor in accordance with my invention.
Figure 4 shows a straight edge crimping die in a position just removed from a fully crimped plug barrel crimped by a plurality of such indenting dies. Only one die is shown for the sake of clarity but eight such dies converge simultaneously to make the crimp shown.
Figure 5 is a view like that of Figure 4 but showing a crimping die with a concave edge.
Figure 6 shows an enlarged cross section taken on line 66 of Figure 3. The location of the eight crimping dies in nearly converged positions are shown in Figure 6.
Figure 7 is a section on line 77 of Figure 3 on the same scale as Figure 3.
Figure 1 shows a plug barrel 21 formed from a flat piece of connector metal, e. g., quarter or half hard electrical copper or brass, with a butt seam 22 along its entire length. This seam has a tendency to distort and become misshapen when one of the ordinary crimps is used. As shown in Figure 2, the insulation is stripped from the end of the wire and the bared wire 25 is folded back over the insulation 26 preparatory to inserting it into the open end 23 of plug barrel 21. Thus a small conductor may be crimped in a much larger plug connector without pre-shaping the plug connector. With larger wires the bated end of the conductor may be in serted coaxially without bending.
Figure 3 shows the completed connection with the skewed indentations 30. These indentations in the example shown are equally spaced, of about the proportions shown and the axis of each indent (i. e. the center line along the bottom of each indentation) makes an angle of approximately twenty-five degrees (25") with an axial plane of the barrel. This arrangement of indentations assures that the seam of the plug barrel will be crossed by at least one indentation without need for any special orientation of the plug in the dies. This advantage may be attained with curved or angular or even X indentations as well as sloping straight lines.
The length of the indenting edges of the dies and their overlap relative to an axial plane of the barrel is such as to assure that at least one such die will extend substantially to both sides of the seam and engage the barrel on both sides of the seam.
Figure 6 is a cross sectional view of the crimp 66 ofFigure 3. Here it is seen that seam 22 lies fiat in a closed condition. The folded over portion of the conductor is shown at 25 and the electrical contact with the connector is shown at 35. The conductor insulation and conductor wire, along with the folded .over portion, are tightly embraced and enclosed by connector 34. The. indentations are formed by dies 33 the location of which are shown by dashed lines. Eight dies were used to form the eight indentations so that a nearly round crimp could be obtained but this invention is not restricted to eight dies; although we have found significant advantage in the eight indent crimps as compared even with six or ten.
The fact that this crimp makes a high quality connection without substantial enlargement or any diameter is regarded as most significant for some uses. In this skewed crimp, all eight indentations 30 are placed so that their longitudinal axes 29 form approximately a twenty-five (25 degree angle with an axial plane of the wire. This angle may be varied, but if too nearly parallel to the conductor axis 23 it will assume the inferior character of a radial indentation; and if at too great an angle it will become a mere cross-crimp, losing the special advantage of the wringing action. In order to avoid dragging the seam open, it should always be crossed by at least one indentation which engages the ferrule firmly on both sides of the seam regardless of its orientation in the dies. Therefore, with a longer and/ or wider indentation a smaller angle may be used and still insure that the seam will be held closed.
A preferred embodiment of this invention is to have the indentations conform to the curve of the plug barrel surface. This is shown in Figure 5 in which a concave edge 42 conforms to the surface of the plug barrel when initially contacted by the die. Such concavity is not circular but an arc of an ellipse because the plane of the indenter edge of the die intersects the plug barrel at an oblique angle. This has the advantage over the flat indentation of engaging the plug barrel from the first on both sides as well asat the center, thereby preventing spreading of the barrel or other distortion which might allow the seam to open. The entire curved die edge comes into contact with the plug barrel from the first moment of impact while a straight die edge would be touching only a point of tangency or a very small area of contact. Even with the straight edged die, however, it will engage opposite sides to give the wringing action, to an increasing extent as the indentation progresses.
Figure 7 shows how the ends of the die edge push the metal of the plug barrel across the wire, giving better contact and twisting or wringing the plug barrel around the conductor wire. This wringing effect is also shown in Figure 3 where the seam is twisted in the crimped section, binding it tightly together.
In the skew crimp, each indentation covers a larger arc of the electrical conductor circumference than does each indentation of former parallel radial indenters and therefore provides a greater transverse edge 31 to retard any longitudinal movement of the electrical conductor in relation to the plug terminal.
A straight die edge used in the skew crimp of this invention has another advantage over known crimps. It produces an indent with maximum pressure on the conductor at the center and progressively less pressure toward the end of the indent. This is due to the straight edge skew die making its deepest impression on the barrel at the center of the barrel. This gradual decrease of pressure puts less strain on the wire, eliminates sharp shoulders that weaken the wire, especially when the wire is subject to vibration or tensile stress.
Although this crimp may be used on any type electrical connector and even for mechanical connections, its advantages are especially significant in terminals such as plug type terminals shown in the drawings.
We claim:
1. In an electrical connection of the type adapted to embrace an electric wire comprising a tubular metal barrel, a longitudinal seam along the outer surface of the barrel and a plurality of crimped indentations impressed in the outer surface of the barrel and extending around the barrel forming a constricted band, at least one of said indentations being set at an oblique angle with respect to the longitudinal seam.
2. An electrical connector of the type adapted to embrace an electric wire comprising: a tubular metal barrel, a longitudinal seam along the outer surface of the barrel, and a plurality of crimped indentations impressed in the outer surface of the barrel and extending around the barrel forming a constricted band; each indentation being set at an oblique angle with respect to the longitudinal seam, and the indentations being of sufficient length and number that each indentation overlaps each of the respective indentations on either side of it.
3. The connector of claim 2 wherein the indentations comprise trough-like portions, said portions having straight bottom portions.
4. The connector of claim 2 wherein the indentations comprise trough-like portions, said portions having curved bottom portions.
5. In an electrical connection the combination comprising an electrical conductor having an insulated body portion and a coextensive uninsulated end portion, said uninsulated end portion being folded back over the adjacent insulated portion, an electrical connector surrounding the uninsulated end portion and the coextending insulated body portion, said connector having a seam which extends longitudinally of the electrical conductor, said connector having indentations impressed on the outer surface thereof securing the connector on the conductor, and said indentations being generally similar and extending helically so as to form oblique angles with the longitudinal axis of the connector.
6. The method of crimping the bare end of an electric wire within a connector having a seam running longitudinally of the wire which includes inserting the bare end of the wire into the connector and crimping the connector onto the Wire with a plurality of indentations so that each indentation is at an angle to the longitudinal axis of the wire and at least one of the indentations forms an oblique angle with and crosses the seam.
References Cited in the file of this patent UNITED STATES PATENTS 1,376,735 Stalhane May 3, 1921 2,008,227 Reilly July 16, 1935 2,143,564 Lybarger Jan. 10, 1939 2,210,804 Ely Aug. 6, 1940 2,276,140 Andren Mar. 10, 1942 2,280,351. Penfold Apr. 21, 1942 2,346,831 'Drury Apr. 18, 1944 2,467,012 Deuscle Apr. 12, 1949 2,480,280 'Bergan Aug. 30, 1949 2,639,754 Macy May 26, 1953 FOREIGN PATENTS 125,077 Great Britain Jan. 8, 1920 463,781 Great Britain Apr. 6, 1937
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US402248A US2816276A (en) | 1954-01-05 | 1954-01-05 | Electrical connectors, method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US402248A US2816276A (en) | 1954-01-05 | 1954-01-05 | Electrical connectors, method and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2816276A true US2816276A (en) | 1957-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US402248A Expired - Lifetime US2816276A (en) | 1954-01-05 | 1954-01-05 | Electrical connectors, method and apparatus |
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| US (1) | US2816276A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1100129B (en) * | 1959-04-03 | 1961-02-23 | Licentia Gmbh | Cable lug |
| US3020520A (en) * | 1959-07-30 | 1962-02-06 | Berg Quentin | Terminal for making electrical connections |
| US3140142A (en) * | 1961-11-07 | 1964-07-07 | Ibm | Electrical connector |
| US3142890A (en) * | 1959-09-15 | 1964-08-04 | Gen Motors Corp | Armature winder and staker |
| DE1221726B (en) * | 1963-09-07 | 1966-07-28 | Patra Patent Treuhand | Electrical clamping connection of a tubular contact pin with an electrical conductor and method for producing this clamping connection |
| US3356789A (en) * | 1965-08-11 | 1967-12-05 | Gen Electric | Band-like crimp |
| US4009927A (en) * | 1974-08-02 | 1977-03-01 | Litton Systems, Inc. | Spiral crimp for retaining a wire conductor in a metal contact |
| US4828516A (en) * | 1983-12-30 | 1989-05-09 | Amp Incorporated | Crimped electrical connection and crimping dies therefore |
| US4890384A (en) * | 1988-08-25 | 1990-01-02 | Amp Incorporated | Method of crimping an electrical connection |
| US4976132A (en) * | 1983-12-30 | 1990-12-11 | Amp Incorporated | Dies for crimping an electrical connection |
| EP0873042A4 (en) * | 1995-05-29 | 1998-10-21 | ||
| US20110223799A1 (en) * | 2010-03-12 | 2011-09-15 | Japan Aviation Electronics Industry, Limited | Contact |
| US20160233637A1 (en) * | 2015-02-11 | 2016-08-11 | Md Elektronik Gmbh | Method and device for producing a cable and cable produced by the method |
| US11069991B2 (en) * | 2017-06-05 | 2021-07-20 | Jilin Zhong Ying High Technology Co., Ltd. | Joint between copper terminal and aluminum wire, and magnetic induction welding method therefor |
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| GB125077A (en) * | 1918-04-04 | 1920-01-08 | Naamlooze Vennootschap Fabriek | Improvements in Two, Three or Multiple-pin PLugs. |
| US1376735A (en) * | 1919-07-08 | 1921-05-03 | Stalhane Otto | Contact-pin for connecting-plugs and process for the manufacture thereof |
| US2008227A (en) * | 1933-08-12 | 1935-07-16 | Reilly Frank Ward | Attachement for wire strands |
| GB463781A (en) * | 1935-11-13 | 1937-04-06 | Ernst Kleinmann | Improvements relating to electrical contact plugs or pins |
| US2143564A (en) * | 1938-06-14 | 1939-01-10 | E A Myers & Sons | Spring pin contactor |
| US2210804A (en) * | 1938-04-07 | 1940-08-06 | Gen Electric | Connector for cables |
| US2276140A (en) * | 1940-04-18 | 1942-03-10 | Artos Engineering Co | Conductor terminal |
| US2280351A (en) * | 1940-02-01 | 1942-04-21 | H A Douglas Mfg Co | Swaging apparatus |
| US2346831A (en) * | 1943-06-15 | 1944-04-18 | H A Douglas Mfg Co | Electrical connection means |
| US2467012A (en) * | 1945-01-27 | 1949-04-12 | Buchanan Electrical Prod Corp | Tool for making electrical connectors |
| US2480280A (en) * | 1945-09-24 | 1949-08-30 | Thomas & Betts Corp | Electric connector |
| US2639754A (en) * | 1945-03-03 | 1953-05-26 | Aircraft Marine Prod Inc | Tool for crimping ferrules |
-
1954
- 1954-01-05 US US402248A patent/US2816276A/en not_active Expired - Lifetime
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|---|---|---|---|---|
| GB125077A (en) * | 1918-04-04 | 1920-01-08 | Naamlooze Vennootschap Fabriek | Improvements in Two, Three or Multiple-pin PLugs. |
| US1376735A (en) * | 1919-07-08 | 1921-05-03 | Stalhane Otto | Contact-pin for connecting-plugs and process for the manufacture thereof |
| US2008227A (en) * | 1933-08-12 | 1935-07-16 | Reilly Frank Ward | Attachement for wire strands |
| GB463781A (en) * | 1935-11-13 | 1937-04-06 | Ernst Kleinmann | Improvements relating to electrical contact plugs or pins |
| US2210804A (en) * | 1938-04-07 | 1940-08-06 | Gen Electric | Connector for cables |
| US2143564A (en) * | 1938-06-14 | 1939-01-10 | E A Myers & Sons | Spring pin contactor |
| US2280351A (en) * | 1940-02-01 | 1942-04-21 | H A Douglas Mfg Co | Swaging apparatus |
| US2276140A (en) * | 1940-04-18 | 1942-03-10 | Artos Engineering Co | Conductor terminal |
| US2346831A (en) * | 1943-06-15 | 1944-04-18 | H A Douglas Mfg Co | Electrical connection means |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1100129B (en) * | 1959-04-03 | 1961-02-23 | Licentia Gmbh | Cable lug |
| US3020520A (en) * | 1959-07-30 | 1962-02-06 | Berg Quentin | Terminal for making electrical connections |
| US3142890A (en) * | 1959-09-15 | 1964-08-04 | Gen Motors Corp | Armature winder and staker |
| US3140142A (en) * | 1961-11-07 | 1964-07-07 | Ibm | Electrical connector |
| DE1221726B (en) * | 1963-09-07 | 1966-07-28 | Patra Patent Treuhand | Electrical clamping connection of a tubular contact pin with an electrical conductor and method for producing this clamping connection |
| US3356789A (en) * | 1965-08-11 | 1967-12-05 | Gen Electric | Band-like crimp |
| US4009927A (en) * | 1974-08-02 | 1977-03-01 | Litton Systems, Inc. | Spiral crimp for retaining a wire conductor in a metal contact |
| US4976132A (en) * | 1983-12-30 | 1990-12-11 | Amp Incorporated | Dies for crimping an electrical connection |
| US4828516A (en) * | 1983-12-30 | 1989-05-09 | Amp Incorporated | Crimped electrical connection and crimping dies therefore |
| US4890384A (en) * | 1988-08-25 | 1990-01-02 | Amp Incorporated | Method of crimping an electrical connection |
| EP0873042A4 (en) * | 1995-05-29 | 1998-10-21 | ||
| EP0873042A1 (en) * | 1995-05-29 | 1998-10-21 | R-Amtech International, Inc. | Elongated flexible electrical heater and a method of manufacturing it |
| US20110223799A1 (en) * | 2010-03-12 | 2011-09-15 | Japan Aviation Electronics Industry, Limited | Contact |
| US8328589B2 (en) * | 2010-03-12 | 2012-12-11 | Japan Aviation Electronics Industry, Limited | Contact |
| US20160233637A1 (en) * | 2015-02-11 | 2016-08-11 | Md Elektronik Gmbh | Method and device for producing a cable and cable produced by the method |
| US9997885B2 (en) * | 2015-02-11 | 2018-06-12 | Md Elektronik Gmbh | Method and device for producing a cable and cable produced by the method |
| US11069991B2 (en) * | 2017-06-05 | 2021-07-20 | Jilin Zhong Ying High Technology Co., Ltd. | Joint between copper terminal and aluminum wire, and magnetic induction welding method therefor |
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