US3278885A - Water-tight electrical connector - Google Patents

Water-tight electrical connector Download PDF

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Publication number
US3278885A
US3278885A US306486A US30648663A US3278885A US 3278885 A US3278885 A US 3278885A US 306486 A US306486 A US 306486A US 30648663 A US30648663 A US 30648663A US 3278885 A US3278885 A US 3278885A
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US
United States
Prior art keywords
plug
contact
sleeve
connector
cable
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
US306486A
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English (en)
Inventor
Klinger Alfred
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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.)
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Publication date
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Application granted granted Critical
Publication of US3278885A publication Critical patent/US3278885A/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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/111—Resilient sockets co-operating with pins having a circular transverse section
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/523—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases for use under water
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/58—Contacts spaced along longitudinal axis of engagement

Definitions

  • Drilling machinery is generally provided with tubular piping adapted to extend into a bore hole.
  • the drilling motor is often located at the lower end of the tubing so that electrical cables have to be provided for supplying electric power to the motor.
  • These cables thus pass through the tubing which also serves as a conduit for water Iwhich is piped, under pressure, to the drill located at the bottom.
  • the tubing conventionally is made up of sections of given lengths, which sections are then added to the top-most end of the tubing already in the bore hole. This, of course, also means that the individual cable sections have to be connected to each other by means of water-tight connectors.
  • the connector fittings such as the plug component and the socket component, are mounted within the tubing, the arrangement being such that when the individual tube sections are then connected to each other by means of sleeves, the electrical connection is effected at the same time without it being necessary to provide any special means for accomplishing this.
  • a conical sealing element is pressed, by means of a clamping cone, against Patented Oct. 11, 1966 ice the plug or socket casing and the cable so as to be in sealing relationship therewith, lwhereupon the cable fitting is cast with a sealing mass. that at very high water pressure, of the order of 500 atmospheres, even this arrangement does not afford a sufiiciently reliable seal.
  • the present invention resides mainly in a connector of the above type in which the connector parts, i.e., the plug and socket components, are iixedly clamped and mounted on the ends of the tubular sections by means of multiple-piece clamps, and wherein the cable is pressed into sealing engagement with the body of' the connector, preferably by means of a clamping and sealing cone and is cast with a sealing material interiorly of the casing of the component.
  • the sealing material for the casings mounted within the tubing comprises at least one epoxy resin and at least one polymer which can be worked under normal pressure, the Shore hardness of which material is different at different places, this difference 4being obtained lby varying the ratio of the constituents.
  • the Shore hardness of the sealing material is approximately in the region where the cable leads in, and lis substantially less, namely, about 35 to 65, in the region where the elements that actually effect the electrical contact are located.
  • the contact elements are constituted by sleeves which are axially slitted from both directions, the slots extending past the middle.
  • the sleeves are also provided with inwardly extending flanges or collars so that a wide ringshaped recess is formed in the axial middle of the sleeve.
  • the connector components are attached to the tubing within Which Ithey are located by means of clamps made of two complementary pieces which encompass the connector component to be mounted and which themselves are held together solely lby means of the bolts which mount the clamps in the tubing.
  • FIGURE l is a longitudinal sectional view of the male component, or plug, of the connector according to the present invention.
  • FIGURE 2 is -a longitudinal view of the female component, or socket, of the connector according to the present invention.
  • FIGURE 3 is a side view, partly in section, of a sleeve incorporated in a connector according to the present invention.
  • FIGURE 4 shows the sleeve ofVFIGURE 3 in conjunction with a plug.
  • FIGURE is a development of the sleeve of FIG- URES 3 and 4.
  • FIGURE 6 is a side view of .a plug contact used in a socket according to the present invention.
  • FIGURE 6a is an end view of the plug contact of FIGURE 6.
  • FIGURE 7 is -a side view showing the plug contact of FIGURES 6 and 6a in conjunction with a sleeve essentially as shown in FIGURES 3 and 4.
  • FIGURE 7a is an end view of the arrangement shown in FIGURE 7.
  • FIGURE 8 shows the coaction of a unilaterally slitted sleeve with a plug; this arrangement does not form a part of the present invention.
  • FIG. 1 shows the male component, or plug, having a steel casing 1, into one end of which leads a cable 2 passing through a clamping cone 3 so as to provide a Water-tight seal between the plug and cable.
  • the contact elements can be soldered or cinched to the cables so as to effect a good electrical connection.
  • the coaxially arranged, stepped contact 4a, 4b, 4c, are mounted on 4an elastic plug rod made of plastic material and are spaced from the end into which the cable 2 leads.
  • the layer 6 of the plastic plug rod consists of an epoxy resin which can be worked Icold under normal pressure; the filler layer 5 is similarly constituted by an epoxy resin.
  • the Shore hardness of the layer 5, located in the region where the ca'ble leads into the plug is brought t-o a value of approximately 100, while the layer 6, located in the region of the contact elements proper, is admixed with polymer in such a ratio that the Shore hardness of the layer 6 is substantially lower, namely, approximately 35. ⁇
  • the plug further includes a clip 13 for pretensioning the cable prior to the casting.
  • the female component, or socket, shown in FIGURE 2 comprises a steel casing 7.
  • a cable 9 is introduced into the casing 7 and is sealed in by means of a sealing tand tensioning cone 8.
  • the cast mass 10 has a Shore hardness of about 100, while in the region of the concentric and stepped contact elements 12a, 12b, 12C, arranged to make contact with the contact elements 4a, 4b, 4c, respectively, of the plug and also soldered, cinched, or otherwise securely fastened to the inner wall of the mass 11, this mass has a Shore hardness of about 65.
  • the constituents which make up the sealing material are initially in liquid state, are hardened or set, in conventional manner, 'by adding a hardener.
  • FIGURE 3 shows a sleeve 21 made of conductive material; such a sleeve may be used for the Contact elements 12a, 12b, 12C, of the socket of FIGURE 2.
  • the sleeve is provided with longitudinally extending slits 22 alternate ones of which start at opposite ends of the sleeve and extend past the middle of the sleeve so as to overlap, ⁇ as shown.
  • Each end of the sleeve is provided with a collar or flange 23.
  • FIGURE 4 shows the sleeve of FIGURE 3 in conjunction with an annular or tubular metallic contact element 24 of the plug which has been inserted into the sleeve.
  • FIGURE 5 shows the sleeve 21 of FIGURE 3 in de velopment. 1
  • FIGURES 6 and 6a show a modification of the metallic contact elements -of the plug.
  • the same is not strictly cylindrical but has two flanges 26, as does the sleeve of FIGURES 3 -to 5.
  • a section 27 which has a reduced diameter.
  • the flanges 26 of laminated raised strips 28 which lie at an angle to the axis of the connection.
  • the anges can be formed by a slot-cutting operation.
  • the purpose of the flanges or collars is to produce a self-cleaning action when the plug is inserted into the socket, because foreign bodies will then escape into the interspaces between the strips 28.
  • FIGURES 7 and 7a show a connection established by g means of a plug according to FIGURES 6 and 6a and a socket 29 which is similar to that of FIGURES 3 and 4. Shown also are the connecting terminals 30 for the cable.
  • the above-described contact arrangement has the advantage that, instead of there being an undesired circular engagement between the cylindrical plug and sleeve, a lowwear surface contact is obtained.
  • TheI sleeve arrangement of FIGURES 3 and 4 makes it possible for the tongues formed between the Vlongitudinal slitsof the sleeve to change their position twice, once when the plug penetrates the first ilange of the sleeve and again when the plug penetrates the other flange. The rst time each tongue changes its position, it moves from the axially parallel orientation to an inclined orientation, and as soon as the plug engages the flange at the other end of the sleeve, the tongue will be moved back to its axially parallel orientation.
  • the tubular sections are joined by twisting the coupling sleeve, and it is expected that the cable connection, which lies con- Centrically within the tubing, will, as a matter of course, be properly made. It is therefore particularly important that ,the wear between the parts which are so mounted as to be rotatable about the axis of the tubing be asis'mall as possible.
  • a connector arrangement as described above allows all of the necessary assembling to be done at the drill site.
  • the introduction of the sealing material does not require any heat treatment orv other Work f Q b@ done at the time of assembly, furthermore,
  • the connector arrangement according to the present invention is reliable, is self-cleaning, results in little wear, produces good surface-contact, and oifers a robust mounting in the tubing, all of which is particularly desirable where rough handling is encountered, and where water and dirt must be kept out lof the cable connection, as is the Case in a drilling operation.
  • the sealing material consists preferably of a bisphenol epoxy resin with an epoxy equivalent of from 200 to 250, thiokol polymer, and aliphatic amine hardener.
  • a bisphenol epoxy resin with an epoxy equivalent of from 200 to 250 thiokol polymer, and aliphatic amine hardener.
  • silica-powder 80 to 100 parts silica-powder may be added to all the compositions for the region of the lead-in means.
  • a connector arrangement adapted for attachment within drill tubing and comprising a plug component and a socket component each having a casing, lead-in means for a cable at one end of the casing, contact means spaced from said one end of the casing for establishing electrical contact with the contact means of the other component, and a first sealing mass between said casing and said contact means and a second sealing mass between said casing and said cable lead-in means; each sealing mass comprising at least one epoxy resin constituent and at least one polymer constituent and being a mass which can be worked cold at normal pressure, the ratio of the constitu- I ents of said second mass in the region of said lead-in means being such that its Shore hardness is approximately while the ratio of the constituents of said rst mass in the region of said contact means is such that its Shore hardness is in the range of approximately 35 to 65.
  • a connector arrangement as delta between said flanges of said contact means of said plug component are constituted by laminated raised strips which lie at an angle to the axis of the connector arrangement.

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  • Connector Housings Or Holding Contact Members (AREA)
US306486A 1962-09-04 1963-09-04 Water-tight electrical connector Expired - Lifetime US3278885A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL0045661 1962-09-04

Publications (1)

Publication Number Publication Date
US3278885A true US3278885A (en) 1966-10-11

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US306486A Expired - Lifetime US3278885A (en) 1962-09-04 1963-09-04 Water-tight electrical connector

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Country Link
US (1) US3278885A (it)
AT (1) AT239352B (it)
DE (1) DE1465860A1 (it)
NL (1) NL297484A (it)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037916A (en) * 1976-04-12 1977-07-26 Thompson Jr Lloyd E High current density electrical contact
US4470657A (en) * 1982-04-08 1984-09-11 International Telephone & Telegraph Corporation Circumferential grounding and shielding spring for an electrical connector
US4500151A (en) * 1982-11-19 1985-02-19 Shell Oil Company Marine electrical plug
US4797117A (en) * 1982-12-23 1989-01-10 Shell Oil Company Marine electrical plug
US4829235A (en) * 1987-04-01 1989-05-09 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Four-terminal connector for measuring resistance of a pyrotechnic initiator
US5409403A (en) * 1993-10-25 1995-04-25 Falossi; Aldo 360 degree connector system
US5989053A (en) * 1994-01-12 1999-11-23 Berg Technology, Inc. Contact element for an electrical connector
WO2011060075A2 (en) 2009-11-11 2011-05-19 Teledyne Odi, Inc. Keyless harsh environment connector
US20110142697A1 (en) * 2009-12-14 2011-06-16 Pm S.R.L. Containment structure for an actuation unit for immersion pumps, particularly for compact immersion pumps to be immersed in wells
US20110207340A1 (en) * 2010-02-19 2011-08-25 Teledyne Odi, Inc. Robotically Mateable Rotary Joint Electrical Connector
US20130000946A1 (en) * 2011-06-29 2013-01-03 Otto Nachbauer Cable with injection molded coupling part
CN103697179A (zh) * 2012-09-27 2014-04-02 艾默生过程管理调节技术公司 具有多种硬度的密封阀盘
US9203184B1 (en) * 2013-04-11 2015-12-01 Amazon Technologies, Inc. Self-aligning connector

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5378161A (en) * 1993-08-04 1995-01-03 Minnesota Mining And Manufacturing Company Tapered electrical connector
US5595497A (en) * 1995-03-01 1997-01-21 Tescorp Seismic Products, Inc. Underwater electrical connector

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1123060A (en) * 1911-07-25 1914-12-29 Linn B Abbott Ground-clamp.
US1901894A (en) * 1930-09-25 1933-03-21 Brown Co Fuse cut-out
US2225728A (en) * 1939-01-03 1940-12-24 Telephonics Corp Separable electrical connector
US2409004A (en) * 1942-11-19 1946-10-08 Gen Electric Multicircuit connector
DE1017241B (de) * 1955-04-29 1957-10-10 Standard Elektrik Ag Aufsteckbares Kupplungsteil
US2881406A (en) * 1955-06-20 1959-04-07 Cannon Electric Co Moisture seal for connectors
US2930773A (en) * 1956-01-30 1960-03-29 Gen Mills Inc Novel composition and method of curing epoxy resins
US2970971A (en) * 1956-10-31 1961-02-07 North American Aviation Inc Composition of a monoepoxide modified polyamide and an epoxy resin
GB892801A (en) * 1959-05-05 1962-03-28 Licentia Gmbh An electric plug-and-socket connection
US3060417A (en) * 1959-01-20 1962-10-23 Specialties Dev Corp Condition responsive network insensitive to electrical leakage
US3193636A (en) * 1962-11-07 1965-07-06 Avco Corp Rotatable multiple-lead electrical connector

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1123060A (en) * 1911-07-25 1914-12-29 Linn B Abbott Ground-clamp.
US1901894A (en) * 1930-09-25 1933-03-21 Brown Co Fuse cut-out
US2225728A (en) * 1939-01-03 1940-12-24 Telephonics Corp Separable electrical connector
US2409004A (en) * 1942-11-19 1946-10-08 Gen Electric Multicircuit connector
DE1017241B (de) * 1955-04-29 1957-10-10 Standard Elektrik Ag Aufsteckbares Kupplungsteil
US2881406A (en) * 1955-06-20 1959-04-07 Cannon Electric Co Moisture seal for connectors
US2930773A (en) * 1956-01-30 1960-03-29 Gen Mills Inc Novel composition and method of curing epoxy resins
US2970971A (en) * 1956-10-31 1961-02-07 North American Aviation Inc Composition of a monoepoxide modified polyamide and an epoxy resin
US3060417A (en) * 1959-01-20 1962-10-23 Specialties Dev Corp Condition responsive network insensitive to electrical leakage
GB892801A (en) * 1959-05-05 1962-03-28 Licentia Gmbh An electric plug-and-socket connection
US3193636A (en) * 1962-11-07 1965-07-06 Avco Corp Rotatable multiple-lead electrical connector

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037916A (en) * 1976-04-12 1977-07-26 Thompson Jr Lloyd E High current density electrical contact
US4470657A (en) * 1982-04-08 1984-09-11 International Telephone & Telegraph Corporation Circumferential grounding and shielding spring for an electrical connector
US4500151A (en) * 1982-11-19 1985-02-19 Shell Oil Company Marine electrical plug
US4797117A (en) * 1982-12-23 1989-01-10 Shell Oil Company Marine electrical plug
US4829235A (en) * 1987-04-01 1989-05-09 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Four-terminal connector for measuring resistance of a pyrotechnic initiator
US5409403A (en) * 1993-10-25 1995-04-25 Falossi; Aldo 360 degree connector system
US5989053A (en) * 1994-01-12 1999-11-23 Berg Technology, Inc. Contact element for an electrical connector
EP2499706A4 (en) * 2009-11-11 2014-01-15 Teledyne Instruments Inc KEYLESS CONNECTOR FOR INEFFECTIVE ENVIRONMENTS
EP2499706A2 (en) * 2009-11-11 2012-09-19 Teledyne Instruments, Inc. Keyless harsh environment connector
WO2011060075A2 (en) 2009-11-11 2011-05-19 Teledyne Odi, Inc. Keyless harsh environment connector
US20110142697A1 (en) * 2009-12-14 2011-06-16 Pm S.R.L. Containment structure for an actuation unit for immersion pumps, particularly for compact immersion pumps to be immersed in wells
US9353766B2 (en) * 2009-12-14 2016-05-31 Pm S.R.L. Containment structure for an actuation unit for immersion pumps, particularly for compact immersion pumps to be immersed in wells
US20110207340A1 (en) * 2010-02-19 2011-08-25 Teledyne Odi, Inc. Robotically Mateable Rotary Joint Electrical Connector
US8900000B2 (en) 2010-02-19 2014-12-02 Teledyne Odi, Inc. Robotically mateable rotary joint electrical connector
US20130000946A1 (en) * 2011-06-29 2013-01-03 Otto Nachbauer Cable with injection molded coupling part
CN103697179A (zh) * 2012-09-27 2014-04-02 艾默生过程管理调节技术公司 具有多种硬度的密封阀盘
US9203184B1 (en) * 2013-04-11 2015-12-01 Amazon Technologies, Inc. Self-aligning connector

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AT239352B (de) 1965-04-12
DE1465860A1 (de) 1969-05-08
NL297484A (it)

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