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Publication numberUS3129996 A
Publication typeGrant
Publication dateApr 21, 1964
Filing dateApr 6, 1962
Priority dateApr 6, 1962
Publication numberUS 3129996 A, US 3129996A, US-A-3129996, US3129996 A, US3129996A
InventorsLocher Ross E
Original AssigneeZinsco Electrical Products
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cable connector
US 3129996 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

April 21, 1964 R. E. LOCHER 3,129,996

CABLE CONNECTOR Filed April 6, 1962 INVENTOR P055 E. LOCHER BY HIS ATTORNEYS HARRIS, K/ECH, Russzu. 8: /(ER- United States Patent 3,129,995 CABLE CfiNNECTGR Ross E. Locher, South Pasadena, (Iahi, assignor to Zinsco Electrical Products, Los Angeles, Calif., a corporation of California Filed Apr. 6, 1962, Ser. No. 1ss,72s 2 Claims. (Ql. 339-249) This invention relates to electrical cable connectors whicare used principally for connections with high current capacity to terminal boards, switch boxes and the like, although the connectors are suitable for any electrical cable connection. Circuits with a plurality of cables in parallel are being used extensively for high current applications in place of a single very large cable. It is desirable in multiple cable circuitry to be able to connect al of the cables at one terminal and in one operation. Normally a multiple cable circuit will use two or three cables but the practice is not limited to any specific number of cables.

It is an object of the present invention to provide a cable connector which may be used to connect a plurality of cables to a bus bar or other terminal device. A further object is to provide such a connector which is particularly suitable for use with large diameter cables, in the range of one-half inch diameter and up, and one which will provide desirable large mechanical clamping forces on the cables. Another object is to provide such a connector in which the clamping force is obtained by actuating a single device Which provides equal clamping forces on each of the cables coupled thereto.

It is an object of the present invention to provide a connector for electrical cables including a terminal member having a plurality of cable-receiving openings therethrough adjacent an end thereof, a bifurcated or U-shaped sliding member positioned over said terminal member with the arms of said sliding member having aligned cablereceiving openings therethrough and alignable with cablereceiving openings of the terminal member to provide a plurality of sets of ali ned openings, and screw means carried in a threaded opening in one of the members for applying a force to the other of the members for moving the sliding member relative to the terminal member and clamping a cable in each of the sets of aligned openings. A further object is to provide such a connector including a retainer coupled to the terminal member and to the sliding member for retaining the members together when a cable is not being clamped therein.

it is a particular object to provide such a connector in which the sliding member comprises first and second arm units and a nut unit positioned between the arm units and having end portions engaging mating openings in the arm units, with the arm units carrying the cable-receiving openings and with the nut unit carrying the screw positioned at the end of the terminal member.

It is an object of the invention to provide a connector for a plurality of electrical cables which connector is rugged, durable, simple in design and operation, and adapted for repeated use while providing large and equalized mechanical loads on each of the cables connected thereto.

The invention also comprises novel details of construction and novel combinations and arrangements of parts, which will more fully appear in the course of the following description. The drawing merely shows and the description rnerely describes a preferred embodiment of the present invention which is given by way of illustration or example.

In the drawing:

FIG. 1 is a perspective view of a preferred embodiment of the cable connector;

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FIG. 2 is a side view of the connector of FIG. 1 showing two cables clamped therein;

FIG. 3 is an end View of the connector of FIG. 1;

FIG. 4 is a sectional view taken along the line 44 of FIG. 3;

FIG. 5 is a partial sectional View taken along the line 55 of FIG. 3; and

FIG. 6 is a sectional view taken along the line 6-6 of FIG. 2.

The connector illustrated in the drawings includes a terminal member lil shown here as an L-shaped piece or" electrical bus bar ailixed to another conductor bar 11 by screws 12. Of course, the terminal member 10 could be merely formed at the end of the bar ll or could take other convenient shapes. A plurality of openings 13 is provided in the terminal member 1'8 for receiving the electrical cables which are to be connected to the terminal member. Any number of openings may be utilized.

A sliding member 16 is positioned over the terminal member and 1.1C1Ud35 arms 17, 13 on either side of the terminal member with openings l9, 29 therein, respectively, corresponding to the openings 13 in the terminal member. The sliding member 16 may be made in one piece, normally U-shaped, but preferably is made of two arm units corresponding to the arms 17 l8, and a nut 21 which is joined to the arm units. The nut may be a cruciform shape as seen in FIG. 5, with bosses 22, 23 project ing through corresponding openings 24, 25 m the arms 17, 1 .8. The nut 21 and arms 17, Iii-3 may be joined by various conventional means, as by peening over the ends of the bosses as seen in FIG. 2.

A screw 28 is positioned in a threaded opening in the nut 21 and preferably has a rounded end for engaging an end of the terminal member. A retainer 29 may be provided in the connector for retaining the terminal member and sliding member together prior to the clamping of a cable therein. A pr ierred form of the retainer is best seen in FIG. 6 and includes a first yoke 30 enclosing the nut 21 and a second yoke 31 engaging a wedge-shaped end 32 of the terminal member ll), the yoltes 3t), 31 being joined together as by spot welding. A clearance opening 33 is provided in the upper end of the retainer for the screw 23. When a retainer of the form shown herein is utilized, the screw 23 actually engages the retainer but the force is transmitted directly to the end of the terminal member.

In use, the cable connector of the invention may be fixed to a bus bar in a terminal box or the like as shown in FIG. 1. The screw 28 is adjusted to bring the cablereceiving openings of the arms of the sliding member into alignment with the cable-receiving openings of the terminal member, as best seen in FIG. 4. Cables 49, 41 are inserted into the sets of aligned openings as seen in FIG. 2. In the particular example illustrated herein, two cables having over-all conductor diameters in the order of threequarters of an inch are being used. Normally cables of this size will comprise a plurality of strands of smaller conductors, but of course the connector could be used with solid cables. After the cables are positioned in the connector, the screw 28 is rotated to move the sliding member upward with respect to Le terminal member for clamping the cables in the aligned openings, as seen in FIG. 6. While described herein as a device for connecting cables to a bus bar or the like, the connector is equally applicable for interconnecting two or more cables.

The cable connector operat s to provide a very strong mechanical clamping force on each of the plurality of cables clamped therein. The connector also provides equalization of clamping forces on each of the cables while requiring operation of only a single screw. The highly desirable objectives of the invention are thus accomplished.

Although an exemplary embodiment of the invention I claim as my invention: 1. In a connector for electrical cables, the combination a bar-shaped terminal member having a plurality of cable-receiving openings therethrough adjacent a Wedge-shaped end thereof with the axes of said openings parallel;

a U-shaped sliding member positioned over said terminal member with the bight of said U at said end of said terminal member, with the arms of said sliding member having aligned cable-receiving openings therethrough and alignable with cable-receiving openings of said terminal member to provide a plurality of sets of aligned openings, said sliding member comprising first and second arm units and a nut unit positioned between said arm units and having end portions engaging mating openings in said arm units; a retainer having a first yoke enclosing a portion of said nut and a second yoke enclosing said Wedge-shaped end for retaining said members together; and a screw carried in a threaded opening in said nut unit for applying a force on said end of said terminal member for moving said sliding member relative to said terminal member and clamping a cable in each of the sets of aligned openings.

2. In a connector for electrical cables, the combination a terminal member having a plurality of cable-receiving openings therethrough adjacent an end thereof with the axes of said openings parallel;

a U-shaped sliding member positioned over said terminal member with the bight of said U at said end of said terminal member, With the arms of said sliding member having aligned cable-receiving openings therethrough and alignable with cable-receiving openings of said terminal member to provide a plurality of sets of aligned openings, said sliding member comprising first and second arm units and a nut unit positioned between said arm units and having end portions engaging mating openings in said arm units;

a retainer coupled to said nut and to said terminal member for retaining said members together; and

a screw carried in a threaded opening in said nut unit for applying a force on said end of said terminal member for moving said sliding member relative to said terminal member and clamping a cable in each of the sets of aligned openings.

References Cited in the file of this patent UNITED STATES PATENTS 2,154,689 Matthews et al Apr. 18, 1939 2,329,998 Meyer Sept. 21, 1943 2,654,815 Laverty Oct. 6, 1953 2,738,479 Gibson Mar. 13, 1956 2,877,443 Bonnett et a1 Mar. 10, 1959 2,949,597 Nerlich Aug. 16, 1960 2,967,290 Zeller Jan. 3, 1961 3,020,514 Butler Feb. 6, 1962 FOREIGN PATENTS 888,909 France Sept. 20, 1943

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2154689 *Dec 11, 1937Apr 18, 1939Matthews W N CorpWire terminal
US2329998 *Oct 6, 1942Sep 21, 1943Wheaton Brass WorksCable connector
US2654815 *Dec 27, 1948Oct 6, 1953Murray Mfg CorpElectric circuit interrupter
US2738479 *Oct 4, 1951Mar 13, 1956Warren H KintzingerPlural wire stripper and electrical connector
US2877443 *Jan 18, 1954Mar 10, 1959Duncan Electric Co IncSeparable connector clamp
US2949597 *May 18, 1956Aug 16, 1960Siemens AgElectric terminal connector
US2967290 *Jan 27, 1958Jan 3, 1961Square D CoTerminal connector
US3020514 *Dec 16, 1960Feb 6, 1962Gen ElectricWire connector clamp
FR888909A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3829825 *Feb 8, 1971Aug 13, 1974Aluminum Co Of AmericaTension connector assembly for cable and the like
US6221447 *Aug 6, 1997Apr 24, 2001Charles S. MunnRubber products that shrink due to the application of energy and hypo-allergenic rubbery products
US6946172Jan 16, 2001Sep 20, 2005Charles S. MunnRubbery products that shrink due to the application of energy and hypo-allergic rubbery products
Classifications
U.S. Classification439/794, 403/188, 403/391
International ClassificationH01R4/36, H01R4/28
Cooperative ClassificationH01R4/363
European ClassificationH01R4/36B