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Publication numberUS3086188 A
Publication typeGrant
Publication dateApr 16, 1963
Filing dateJan 18, 1962
Priority dateJan 18, 1962
Publication numberUS 3086188 A, US 3086188A, US-A-3086188, US3086188 A, US3086188A
InventorsRoss Joseph I
Original AssigneeRoss Joseph I
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Non-reversing hermaphroditic cable connectors
US 3086188 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

J. l. ROSS April 16, 1963 NON-REVERSING HERMAPHRODITIC CABLE CONNECTORS 2 Sheets-Sheet 1 Original Filed March 20, 1958 JOSEPH R05; I BY INVENTOR 0/ H H MMWJ MH. mmmlllmlf (.3. l .01.. ll m HUM United States Patent ()fiice 3,086,188 Patented Apr. 16, 1963 3,086,183 NON-REVERSING HERMAPHRODITIC (IAISLE CONNECTORS Joseph I. Ross, 4 Ridge Rock Lane, East Norwich, N.Y. Continuation of application Ser. No. 722,706, Mar. 20, 1958. This application Jan. 18, 1962, Ser. No. 168,020

4 Claims. (Cl. 539-4?) The present invention relates generally to electrical terminal connectors for multiple-conductor cables, and more particularly to connectors of the hermaphroditic type which are adapted to mate without reversal of polarization. This application is a continuation of my application Serial No. 722,706, filed March 20, 1958, now abandoned.

To effect connections between electrical units or components of a system which are separated from each other, it is known to make use of multi-wire cables linked together by means of terminal connectors. conventionally such connectors are .of the male and female type, the cable interconnections being made by mating a male connector with a female connector. Similarly, in connecting one end of a cable to chassis terminals, male and female elements are employed.

In mobile installations, such as field radio transmitters or portable radar systems, it is important that connections between various elements of the system to be made quickly and without stress, this being particularly the case in military applications. The use of standard male and female connectors in conjunction with cables is a decided drawback, for valuable time is consumed in matching male connectors to appropriate female connectors.

It has been recently proposed to replace the standard male and female connectors with socalled hermaphroditic connectors whereby the connectors ateither end of a multiple conductor cable are identical to each other. Such connectors are intended to obviate the matching of male and female elements and thereby simplifythe hookup of complex field equipment. Existing hermaphroditic connectors however have a serious disadvantage, for in joining them a reversal of polarization may be brought about in the lines connected thereto.

In view of the foregoing, it is the primary object of the present invention to provide a connector of the hermaphroditic type in which reversal of polarization of the connecting lines is prevented in the mating of one connector to another.

More particularly, it is an object of the present invention to provide a hermaphroditic connector constituted by a pair of hemicyclic terminal pin areas, the corresponding pins in each area being interconnected whereby the desired polarization is maintained when two connectors are joined together. 7

Also an object of. the invention is to provide a hermaphroditic connector of the above-described type wherein the arrangement of pins is such as to occupy a minimum area and to afford an extremely long resistance path between pin to pin to ground.

A further object of the invention is to provide a hermaphroditic connector constituted by a pair of hemicyclic terminal pin areas, each of which is divided into insulation sectors, the sectors forming the connector being alternately raised and depressed such that when engaged with a mating connector, each raised sector of one connector nests within a depressed sector of the other to form an intermeshed and insulated mating assembly in which 2 eachlcontact pin is completely enveloped by dielectric materia Still another object of the invention is to provide a mu-lti-deck connector incorporating an intermediate waterproofing gasket which is adapted to seal all the pins against the penetration of moisture from the outside to the point at which the cables are attached to the pins.

For a better understanding of the invention as well as other objects and further features thereof, reference is bad to the following detailed description to be read in con unction with the accompanying drawings, wherein like components in the various views are identified by like reference numerals.

In the drawings:

FIG. 1 is a perspective view of a non reversing hermaphroditic cable connector assembly in accordance with the invention.

FIG. 2 is a vertical section taken through the connector block forming a part of the assembly shown in FIG. 1.

FIG. 3 isa horizontal section taken through the connector block in the plane indicated by lines 3-3 in FIG. 2.

FIG. 4 is a horizontal section taken through the connector block in the plane indicated by lines 44 in FIG. 2.

FIG. 5 is a horizontal section taken through the con nector block in the plane indicated by lines 5-5 in FIG. 2.

FIG. 6 is a bottom plan view of the connector block as seen in the plane represented by lines 6-6 in FIG. 2.

FIG. 7 is a top plan view of the connector block as seen in the plane represented by lines 77 in FIG. 2.

FIG. 8 is a schematic diagram illustrative of the operation of the connector.

FIG. 9 is a perspective view of the contact pins incorporated in the connector.

Referring now to FIG. 1, a connector assembly according to the invention is comprised of a connector block, generally designated by numeral 10, which is supported within and projects from the front end of a tapered sleeve 11 having a coupling ring 12 adapted to interlock the assembly to an identical device. A multiple conductor cable 13 enters the rear end of sleeve 11 for connection to the terminal pins supported in the connector block. On the cable entry point a tapered rubber compression gland (not shown) may be provided to seal the connector from this end against moisture and provide a strain relief for the cable. The sleeve 11 and other casing elements of the connector assembly form no part of the present invention and are merely disclosed to show one manner of housing the connector block.

The connector block 10 is formed of a molded insulating material, such as a high impact plastic of good dielectric properties, the block being constituted by stacked discs each forming a deck. The top deck 14 is constituted by six sector regions S to S which are alternately raised and depressed, a bank of connector pins 15- being supported within each sector.

For purposes of explanation, it will be assumed that the multi-conductor cable 13- has fifty-two conductors 211-,

though it is to be understood that the invention is ap plicable to cables having any plurality of wires. Conventionally, a connector for a fifty-two conductor cable would present a like number of terminal pins. In the present connector, however, ninety-seven pins are used of which forty-five are blind pins and fifty-two are active pins.

I It is important to understand the nature of the hermaphroditic pin as well as the distinction between an active and a blind pin and to this end reference is made to FIG. 9 wherein 15' is an example of an active pin and 15 an example of a blind pin.

In both cases, one end of the pin has a longitudinal slot cut therein to define a pair of resilient fingers. To join two pins they are brought together in axial alignment with their fingers at mutually perpendicular positions whereby each pair of fingers slides along the edges of the other and encloses the slot therebetween.

The other end of blind pin 15 terminates in an enlarged cylindrical head 15"a, whereas in the active pin which also includes an enlarged head 15'a, the pin is provided with a tubular soldering extension 15']; for connection to one wire of the cable (note wire 16 in FIG. 2). The active pin 15' is used therefore for making contact with the cable, whereas the blind pin 15" is for the purpose of providing its related counterpart so as to prevent reversal of polarity in field use. Each pin is preferably fabricated of spring temper phosphor bronze and may, if desired, be silver or gold-plated to enhance conductivity.

As shown in FIG. 2, the bottom deck 17 of the connector block is provided with recesses to receive the heads 15a and 15"a of the various pins, the soldering extensions 15b projecting without the bottom deck for connection to the cable conductors.

A rubber gasket is interposed between the top deck 14 and the intermediate deck 13 to prevent seepage of moisture from the exterior to the interior of the connector. In mating two connectors, the raised sectors of one intermesh with the depressed sectors of the other so that each pin is fully surrounded by dielectric material.

Viewing the connector block at the top end, as it appears in FIG. 7, it will be seen that there are ninetyseven pins, seven of which lie along the equatorial line EL which divides the top deck into two hemicycles R at the right side and L on the left side. The pins in the right hernicycle R are designated by the letters A to Z and AA to ZZ, the distribution of pins being such that pins A, E, N, X, H, SS and ZZ lie on the equatorial line EL, the remaining forty-five pins being divided equally among the three sectors S S and S in the right hernicycle. The slots of the pins are all at a 45 angle relative to line EL to effect mating of the pin when two connectors are brought together.

The pins in the left hernicycle L are in correspondence with the pins in the right hernicycle and therefore bear corresponding letters prefixed with a minus mark, the negatively prefixed pins in the left hernicycle being divided equally among the sectors S S and S Since the pins on line EL are common to both hemicycles, no corresponding pins are provided therefor.

Thus pin B in sector S finds its complement in pin -B in sector S pin R in sector S finds its complement in pin -13 in sector S and so on. In short, there are forty-five pins in the right hernicycle, forty-five complementary pins in the left hernicycle and seven pins along the equatorial line. As will be seen later in greater detail, each pin in the right hernicycle is connected to its complementary pin in the left, one of which pair is an active pin and the other a blind pin. All of the equatorial pins are active.

Referring now to FIG. 6, which shows the connector block at the bottom end, the extensions of the fifty-two active pins are visible and from the letters in this figure one can determine which of the ninety-seven pins 1n FIG. 7 are the active pins. It will be seen that the spacing between the pins in FIG. 6 is twice that of the pins in FIG. 7, thereby providing the maximum resistance between terminals.

This result is brought about by alternating the positions of the blind and active pins, as shown in FIG. 2, and by connecting each blind pin in one hemicycle to its corresponding active pin in the other hernicycle. The manner in which the connections are made is illustrated in FIGS. 3, 4 and 5. Referring first to FIG. 3, it will be seen that pin B in the right hernicycle is connected by a lead to pin 'B in the left hernicycle and, as is evident from FIG. 6, pin B is the active pin. Pin C at the right is connected to pin C at the left, pin C in this instance being the active pin. The connection between pin D and pin D is effected at another deck level in the connector block, as shown in FIG. 4, pin D in this instance being the active pin. Still another deck level is shown in FIG. 5 where, for example, pin M at the right side is connected to pin -'M at the left side, pin M being the active pin.

The connections shown in FIGS. 3, 4 and 5 may be made by printed circuit techniques on the surfaces of the insulating discs which form part of the connector block or any other known means may be provided to effect the desired connections.

The arrangement is such that polarization will be maintained. In FIG. 8, this is demonstrated in simplified form in connection with a cable having three lines 1, 2 and 3. Line 3 is connected to a common contact 3 in a connector 0, which is equivalent to one of the pins on the equatorial line. Lines 1 and 2 are connected to contacts 1 and 2, respectively, which are equivalent to pins located in the right hernicycle, these contacts being jumped to contacts 1 and 2' which are equivalent to pins in the left hernicycle and represent the desired mirror image.

When connector C in FIG. 8 is connected to a connector C it will be seen that line 1 on the input side will lead to line 1 on the output side and the same will apply also to line 2 and line 3.

While there has been shown what is considered to be a preferred embodiment of the invention, it will be manifest that many changes and modifications may be made therein without departing from the essential spirit of the invention. Thus it is not necessary that all sectors in each half of the connector be of the same size, nor must the pins be distributed equally therebetween. All that is required is that for each sector in each half there be a like or complementary sector in the other half with a like number of pins. In fact in some cases it may be desirable to have sectors of different size so as to facilitate "keying in of the sectors. It is intended, therefore, in the annexed claims to cover all such changes and modifications as fall within the true scope of the invention.

In lieu of the stacked deck arrangement shown in the drawings, the various decks may be formed by a molding operation in a unitary device wherein the individual jumpers for the pins still occupy the same relative orientation in the separate planes as illustrated in FIG. 2. However, the decks will not be separable but will be molded into an integral number.

What is claimed is:

l. A hermaphroditic connector for a multiconductor cable comprising an insulating block constituted by a stack of superposed decks, constituted by a top deck, at least one intermediate deck and a bottom deck, the top deck being divisible into two hemicycles, each of which is divided into sectors of like size, the several sectors being alternately raised and depressed whereby the connector is adapted to intermesh with another connector, a plurality of hermaphrodite pins extending through said block and engageable at said top deck with like pins in said another connector, said pins being distributed symmetrically between said hemicycles and being divided equally among the sectors whereby for each pin in any sector of one hernicycle there is a corresponding pin in the complementary sector in the opposing hemicycle to form a pair, conductive means in said intermediate decks of said block to interconnect the pins in said pair, one of said pins in the pair being an active pin of extended length to project from the bottom deck of said block for connection to one conductor of said cables, the other pins in the pair being a blind pin terminating in said bottom deck, said active pins being spaced apart a distance substantially twice that between adjacent pins in said block.

2. A connector, as set forth in claim 1, further including a plurality of pins of extended length supported along the equatorial line in said block between said hemicycles.

3. A connector, as set forth in claim 1, further including a rubber grommet interposed between said top deck and said intermediate decks to seal off the interior of said block against moisture.

4. A connector, as set 'forth-in claim 1, wherein each blind pin is constituted by a rod of circular cross-section, one end of which has a longitudinal slot therein to form a pair of spring fingers, the other end terminating in an enlarged head, the active pin further including a tubular extension projecting from said head.

References Cited in the file of this patent UNITED STATES PATENTS

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US551930 *Sep 3, 1895Dec 24, 1895 Electric railway-train signaling
US1422241 *Apr 17, 1912Jul 11, 1922 Electric multiple-connection plug
US2124207 *Sep 9, 1936Jul 19, 1938Allegemeine Elek Citatz GesMultiple circuit connecter device
US2383926 *Nov 14, 1942Aug 28, 1945Aircraft Marine Prod IncElectrical connector
US2386177 *Apr 25, 1942Oct 9, 1945Johan M AndersenElectrical connector
US2492236 *Jul 22, 1946Dec 27, 1949Motorola IncWiring arrangement
USRE23547 *May 15, 1946Sep 9, 1952 Quick detachable connector
FR586049A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3252124 *Jun 18, 1963May 17, 1966Wago Klemmenwerk G M B HPush-in connector
US3271726 *Nov 2, 1961Sep 6, 1966Bendix CorpElectrical connector
US3281753 *Oct 31, 1963Oct 25, 1966D J Campbell Co IncElectrical connector
US3299394 *Jun 23, 1964Jan 17, 1967Prescott Wilmar LEasy break-away electrical step connector
US3414865 *Sep 20, 1963Dec 3, 1968Wauconda Tool And EngineeringElectrical connectors
US3421134 *Jun 2, 1965Jan 7, 1969NasaElectrical connector
US3467942 *Mar 10, 1965Sep 16, 1969Amp IncHousing member
US3518615 *Apr 17, 1967Jun 30, 1970Lockheed Aircraft CorpElectrical connector assembly
US3671918 *Apr 28, 1969Jun 20, 1972Hughes Aircraft CoIntraconnector wiring change module
US3954319 *May 20, 1974May 4, 1976Hughes Aircraft CompanyEnvironment proof electrical connector assembly
US4682831 *Mar 12, 1982Jul 28, 1987Litton Resources Systems, Inc.Multiple-contact connector assembly
US4708660 *Jun 23, 1986Nov 24, 1987Control Data CorporationConnector for orthogonally mounting circuit boards
US5125848 *Feb 28, 1991Jun 30, 1992Tri-Clover, Inc.Environmentally sealed hermaphroditic electric connector
US5306171 *Aug 7, 1992Apr 26, 1994Elco CorporationBowtie connector with additional leaf contacts
US5455734 *Jul 1, 1993Oct 3, 1995Trw Inc.Insert device for electrical relays, solenoids, motors, controllers, and the like
US5568348 *Aug 29, 1995Oct 22, 1996Trw Inc.Insert device for electrical relays, solenoids, motors, controllers, and the like
US5590058 *Feb 24, 1995Dec 31, 1996Trw Inc.Battery monitor for unobstrusive installation with a battery connector
US5686697 *Jan 6, 1995Nov 11, 1997Metatech CorporationElectrical circuit suspension system
US5692917 *Apr 18, 1996Dec 2, 1997Trw Inc.Computer hardware insert device for software authorization
US6520810 *Oct 24, 2001Feb 18, 2003Molex IncorporatedConnector system for interconnection with flat flexible circuitry
US6613979Aug 27, 1997Sep 2, 2003Quell CorporationElectrical circuit suspension system
US7931504 *May 5, 2009Apr 26, 2011Krones AgElectrical connector
US8297997Nov 9, 2009Oct 30, 2012Koninklijke Philips Electronics N.V.Connector with a surface with primary and reduntant connection points
US8845368 *Aug 31, 2012Sep 30, 2014Amazon Technologies, Inc.Electrical connectors
US20080020649 *Jul 10, 2007Jan 24, 20083M Innovative Properties CompanyElectrical connector and assembly
US20080050969 *Aug 25, 2006Feb 28, 2008General Dynamics Advanced Information Systems, Inc.Reduced crosstalk differential bowtie connector
US20090280692 *May 5, 2009Nov 12, 2009Krones AgElectrical connector
US20110212651 *Nov 9, 2009Sep 1, 2011Koninklijke Philips Electronics N.V.Connector for electronic device
US20160294092 *Mar 28, 2016Oct 6, 2016Nitta CorporationConnector apparatus
CN102983446A *Dec 25, 2012Mar 20, 2013天津华宁电子有限公司Insulation connector and buckled and pressed type cable joint using same
DE3940652A1 *Dec 8, 1989Jun 13, 1991Georg FroehlichElectrical plug contact - comprises two interlocking plugs each having contact pin and isolation coated socket
DE3940652C2 *Dec 8, 1989Aug 10, 2000Georg FroehlichElektrische Steckverbindung
EP0573714A3 *Sep 22, 1992Apr 26, 1995Trw IncElectrical connector circuit wafer.
WO2010055452A1 *Nov 9, 2009May 20, 2010Koninklijke Philips Electronics N.V.Connector for electronic device
U.S. Classification439/291, 439/587, 439/515
International ClassificationH01R13/28, H01R13/02, H01R13/64
Cooperative ClassificationH01R13/28, H01R13/64
European ClassificationH01R13/28