US2852631A - Circuit continuity check splice - Google Patents

Circuit continuity check splice Download PDF

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Publication number
US2852631A
US2852631A US642716A US64271657A US2852631A US 2852631 A US2852631 A US 2852631A US 642716 A US642716 A US 642716A US 64271657 A US64271657 A US 64271657A US 2852631 A US2852631 A US 2852631A
Authority
US
United States
Prior art keywords
metal
sleeve
strap
ferrules
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US642716A
Other languages
English (en)
Inventor
Harry B White
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Corp
Original Assignee
AMP Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to CA622836A priority Critical patent/CA622836A/en
Application filed by AMP Inc filed Critical AMP Inc
Priority to US642716A priority patent/US2852631A/en
Priority to CH359182D priority patent/CH359182A/de
Priority to JP414058A priority patent/JPS352133B1/ja
Priority to DEA28949A priority patent/DE1076771B/de
Application granted granted Critical
Publication of US2852631A publication Critical patent/US2852631A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable

Definitions

  • This connector comprises a metal ferrule adapted to be cold forged onto the wire. Securing a wire to each end of the ferrule by means of a crimped connection achieves an excellent electrical connection,
  • connection One difficulty in employing such a connection arises in the testing of the connection to ascertain whether or not a good electrically conductive joint has been formed. In a fairly vrcomplex circuit, several thousand (or more) of these crimped connections may be used. If a break occurs in the circuit, it is necessary to test each one of these conductive jo-ints to determine Whether or not it is carrying electricity.
  • This testingimeans is built into the connector without sacricing any of the insulating properties described above.
  • FIG. 1 is a perspective view of an electrical connector embodying principles of this invention
  • Figure 2 is a plan View taken along cross sectional plane II-II of Figure 5 showing the device of Figure 1;
  • Figure 3 is a view similar to Figure 2 showing the electrical connector crimped onto a pair of electrical conductors
  • Figure 4 is the identical connector of Figure 3, shown in its electrical conducting position
  • Figure 5 is a plan view of a cross section taken through lines V--V on Figure 2;
  • FIGS 6 and 7 are modied forms of connectors embodying principles of this invention.
  • One embodiment of a connector incorporating principles of this invention is of the type known as a butt connector, as set :forth in the patent to Broske, No. 2,478,082, issued August 2, 1949.
  • Figure 2 shows a pair of coaxial metal ferrules, 30, 32 secured together by a metallic strap 34.
  • This assembly may be stamped out of a metallic sheet and rolled up so that the ferrules and the connecting strap are all integral.
  • These t'errules are preferably made of copper, but may be made of any other material having good electrical conductive properties.
  • a seamless ferrule 36, 38 may be placed over each of the ferrules 30, 32 to prevent them from splitting open when crimping pressure is applied.
  • a sleeve 33 of clear plastic insulation Surrounding the entire assembly is a sleeve 33 of clear plastic insulation. This insulation is of the type capable of accepting crimping die pressure without shearing, rupturing or tearing. Preferably this plastic is transparent to permit visual inspection of the crimped connection.
  • the circuit continuity testing assembly comprises a metal stud or post 46 projecting from strap 34.
  • a metal Contact member 42 is embedded in the surface of the insulating sleeve. As shown in Figures 2 through 5, the contact member 42 comprises a metal button which extends into the inner surface of the connector. The member 42 which extends into the inner surface of the connector is forced into snug engagement with the insulation sleeve and forms a waterproof seal therewith.
  • Insulated wires 5t), 52 having uninsulated end portions S4, S6 are inserted within metal ferrnles 312i, 32 respectively.
  • the inner edges of the wires S4, 56 project through the ferrules 30, 32 wherein they may be observed by the operator to assure proper positioning of the wires within the ferrules.
  • the insulation on the wires is received by the outer metal -ferrules 36, 33 as well as the overlapping ends of the insulating plastic sleeve. In this position a plurality of crimps are impressed along the longitudinal surface of the insulating sleeve to join the outer ends of the sleeve to the insulation on the wire and the intermediate section of the connector to the conductor itself. This provides a mechanically secure, insulated, electrically conductive joint.
  • the button 42 is disposed in spaced relationship from the stud 40 as illustrated in Figure 3. Electricity iiowing through conductor 54 is conveyed through metal ferrule 3), metal strap 34, metal ferrule 32, and into conducto-r 56. When it is desired to test the joint to ascertain whether or not it is carrying an electrical current, the button 42 is depressed until it comes into contact with stud 40. The flexible quality of the insulation permits movement of the button contact in this manner. A probe, designated by the letter T, or any other testing instrument may be applied to the contact 42 to take a reading of the electrical characteristics of the circuit. Y
  • the stud 40 in addition to furnishing a means for testing the conductivity of the joint, also functions as a means for resisting over-flexure of the insulation sleeve. Since the button 42 may only be depressed the width of the air space between it and the post 4t), the degree of ilexure required by the plastic is slight. The stud 4@ prevents the insulation from being flexed an amount greater than the original distance between the contact 42 and the stud 40.
  • the insulating sleeve 33 is recessed slightly along its intermediate section, i. e., between the ferrules. This accommodates the contact button 42' while minimizing the diameter of the assembly in this area. Furthermore, this protects the button Contact from accidentally touch-ing a grounding means. However, even if this should happen, the member 42 will not make contact with the studv 4t? unless, thepinsulating sleeve 33 is depressed.
  • the sleeve 33 is sufficiently rigid to require the application of positive pressure to depress the button 42, which operates as ⁇ another safeguard against accidental grounding of the circuit.
  • FIG. 6 The embodiment depicted in Figure 6. is similar to the embodiment shown in Figures 1- through 5 except that a further precaution against accidental grounding resides in the provision of a slidable insulation.
  • sleeve Si' which insulates the contact 42'".
  • An opening 53" in sleeve 51 is located near the button 42.
  • the sleeve may be either moved longitudinally or else rotated to align the opening 53 and the button 42 thus exposing the contact 4Z.
  • the sleeve 5l may be returned to its insulating position.
  • the sleeve 50' may be knurled at either or both ends to prevent accidental displacement.
  • Figure 6 also illustrates how the stud 4t) may be omitted and the strap 34 deformed in such a manner as to perform the same function as the stud.
  • the strap is bent into the shape of an inverted U 40 with the bight of the U being disposed the desired distance from the button contact.
  • Figure 7 shows an embodiment of the invention, also similar to Figures 1 through 5, except that a reducedy central portion 60 isprovided so that the distance between button 42 and the central portion 60 provides the necessary air space to permit the assembly to function as a testing device.
  • An insulated electrical connection joining a plurality 4 of conductors and including a pair of coaxial metal ferrules joined by a metal strap, a metal stud extending from the strap, a flexible plastic sheath surrounding the entire assembly, and a metal contact member extending through the sheath in the vicinity of the metal stud, whereby the plastic sheath may be deformed to permit the metal contact member to engage the stud.
  • An insulated electrical connector including a pair of coaxial metal ferrules joined by a metalf strap, a ilexible insulating sleeve tightlly covering the ferrules and overlapping the outer ends of the ferrules, a metal member embedded in the plastic sleeve with one metal surface exposed to the interior of the sleeve and the opposite metal surface exposed to the interior of the sleeve, and said metal member being movable into or out of electrical engagement with the metal strap to permit' testing the electricall continuity of the circuit.
  • the device of claim l including a second insulating sleevesurrounding the metal member, said insulating sleeves being relatively movable.
  • Trhe device of claim 4' including an opening in the second" insulating sleeve, said opening being aligned with the-metal member in one relative position ofthe sleeves.
  • An electrical connector including a pair of longitudinally coaxial metal ferrules joined by a metal strap, a flexible insulation sleeve tightly covering the ferrules, a metal member'embedded in the sleeve between the ferrules-andopposed to the metal strap, a metallic projectionon the strap extending toward the metal member, and
  • saidmetal being normally spaced from the projection but movablev by flexure of the insulation sleeve into contact.

Landscapes

  • Cable Accessories (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US642716A 1957-02-27 1957-02-27 Circuit continuity check splice Expired - Lifetime US2852631A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA622836A CA622836A (en) 1957-02-27 Insulated electrical connector and connection
US642716A US2852631A (en) 1957-02-27 1957-02-27 Circuit continuity check splice
CH359182D CH359182A (de) 1957-02-27 1958-02-15 Elektrischer Verbinder
JP414058A JPS352133B1 (en:Method) 1957-02-27 1958-02-18
DEA28949A DE1076771B (de) 1957-02-27 1958-02-25 Elektrischer Presshuelsenverbinder mit Pruefeinrichtung

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA622836T
US1076771XA 1957-02-27 1957-02-27
US359182XA 1957-02-27 1957-02-27
US642716A US2852631A (en) 1957-02-27 1957-02-27 Circuit continuity check splice

Publications (1)

Publication Number Publication Date
US2852631A true US2852631A (en) 1958-09-16

Family

ID=73787764

Family Applications (1)

Application Number Title Priority Date Filing Date
US642716A Expired - Lifetime US2852631A (en) 1957-02-27 1957-02-27 Circuit continuity check splice

Country Status (5)

Country Link
US (1) US2852631A (en:Method)
JP (1) JPS352133B1 (en:Method)
CA (1) CA622836A (en:Method)
CH (1) CH359182A (en:Method)
DE (1) DE1076771B (en:Method)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981787A (en) * 1958-02-07 1961-04-25 Burndy Corp Insulated connector
US4371856A (en) * 1980-09-22 1983-02-01 Sentrol, Inc. Switch assembly including circuit test points

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004025062B4 (de) 2004-05-18 2006-09-14 Hydraulik-Ring Gmbh Gefriertaugliches Dosierventil
DE102005056395B3 (de) * 2005-11-24 2006-11-30 Hydraulik-Ring Gmbh Kriechsperre für Kabelbäume
DE102007004687B4 (de) 2007-01-25 2012-03-01 Hydraulik-Ring Gmbh Volumensmengenabgabeeinheit und Verfahren zur Kalibrierung der Druckausgangssignal-Volumensmenge-Charakteristik
DE102008012780B4 (de) 2008-03-05 2012-10-04 Hydraulik-Ring Gmbh Abgasnachbehandlungseinrichtung
DE102009035940C5 (de) 2009-08-03 2017-04-20 Cummins Ltd. SCR-Abgasnachbehandlungseinrichtung
DE102010061222B4 (de) 2010-12-14 2015-05-07 Cummins Ltd. SCR-Abgasnachbehandlungseinrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2025564A (en) * 1932-12-24 1935-12-24 Gen Electric Electrical socket
US2605314A (en) * 1948-06-11 1952-07-29 Belden Mfg Co Electrical cable with intermediate disconnect means

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478082A (en) * 1945-10-24 1949-08-02 Aircraft Marine Prod Inc Electrical connector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2025564A (en) * 1932-12-24 1935-12-24 Gen Electric Electrical socket
US2605314A (en) * 1948-06-11 1952-07-29 Belden Mfg Co Electrical cable with intermediate disconnect means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2981787A (en) * 1958-02-07 1961-04-25 Burndy Corp Insulated connector
US4371856A (en) * 1980-09-22 1983-02-01 Sentrol, Inc. Switch assembly including circuit test points

Also Published As

Publication number Publication date
CH359182A (de) 1961-12-31
DE1076771B (de) 1960-03-03
JPS352133B1 (en:Method) 1960-03-12
CA622836A (en) 1961-06-27

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