|Publication number||US2536003 A|
|Publication date||Dec 26, 1950|
|Filing date||Jul 8, 1946|
|Priority date||Jul 8, 1946|
|Publication number||US 2536003 A, US 2536003A, US-A-2536003, US2536003 A, US2536003A|
|Inventors||Dupre Henry Peter|
|Original Assignee||Burndy Engineering Co Inc|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (9), Referenced by (39), Classifications (7)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Dec. 26, 1950 H, P, DUPRE 2,536,003
COAXIAL CABLE CONNECTION Filed July 8, 1946 11.011111111111111 .wwnv v 1w C f 111.4- 2O 4 A Q8 30 3 A 25 35 37 23 3i 27 29 2i INVENTOR Patented Dec. 26, 1950 UNITED STATES PATENT OFFICE COAXIAL CABLE CONNECTION tion of New York Application July 8, 1946, Serial No. 681,864
3 Claims. l
My invention relates to coaxial cable connections and more particularly to means for establishing permanent connections for coaxial cables.
Hitherto such cable connections have been the separable type involving threaded parts, many of which required soldering to the conductors of the cables. Such connections are bulky, expensive and difficult to install. The use of solder may cause injury to the inner insulation and may necessitate the deposition of large amounts of metal on the outer conductor, thereby changing the electrical characteristics of the cable.
The principal object of my invention is to provide an indentable type of connection for coaxial cables which will not appreciably change the electrical characteristics of the cable.
Other objects are to provide a connection which will not require heat; which will not add appreciably to the diameter of the cable; which is inexpensive to install; requires little bulk or weight; and which can be manufactured at low cost.
I accomplish these and other objects and obtain my new results as will be apparent from the device described in the following specifica- 25 tion, particularly pointed out in the claims, and illustrated in the accompanying drawing in which:
Fig. 1 is an exploded perspective view of my device for terminal connections;
Fig. 2 is a longitudinally sectioned assembly view for coaxial cables showing the nal connection;
Fig. 3 is an exploded perspective View of the elements of my device for making a splicing connection for coaxial cables;
Fig. 4 is a longitudinal sectioned assembly view showing the iinal splice connection.
In the drawing, reference numeral I designates a portion of coaxial cable having a central conductor II, an intermediate insulator I2, the tubular conductor I3, and the outer insulation Il.
In order to provide my novel terminal connection, I provide an inner ferrule I5, and outer ferrule I6, a central conductor terminal I1 and an outer conductor connection I8.
The central conductor terminal I1 comprises a tubular body section Ila, an insulation shroud I'Ib and a terminal lug IIc, all of which may be made from a single piece of metal tubing formed into the desired shape.
The outer connection I8 comprises a piece of ilexible conductor I8a which has been inserted into a tubular connector I8b having a conductor carrying body portion I8c for inserting the con- Ioi. 174-88) ductor I 8a therein, which connector I8b terminates in a terminal lug I8d. The connector I8b may also be made of a single piece of metal tubing formed into the desired shape, with the 5 body portion I8c indented as at I8e to secure the conductor I8a thereto.
The various elements are assembled in the following manner: The cable is stripped to expose a suiilcient length of the central conductor suit- 10 able for insertion into the tubular body of the terminal I'I. The tubular conductor I3 is then bared and cut back for a short distance as shown in Fig. 1.
The outer ferrule I6 is then inserted over the tubular conductor I 3 until it is adjacent the outer insulation and over the ends of conductor I8a which is compressed thereunder. The inner ferrule I5 is then inserted under the marginal edge of the tubular conductor until hidden from View.
Thereafter the outer ferrule I6 with the end of conductor I8a thereunder is slid until directly over the inner ferrule I5. A circumferential crimp IEa locks the conductors I3 and I8a to the ferrules I5 and I6.
The terminal connector I1 is then inserted over uthe end of the central conductor Il, with the shroud IIb covering a portion of the insulation I2. The tubular body section I'Ia and the shroud I'Ib are suitably indented as at I'Idand crimped as at IIe, respectively, to secure the terminal thereto.
The completed assembly of the connection is shown in section in Fig. 2.
In providing a splice connection, I employ the construction shown in Figs. 3 and 4. The elements include the coaxial cables 20 and 2|, the
vpair of inner ferrules 22 and 23, an outer connection ferrule 24 and an inner connecting ferrule 25.
Cables 20 and 2l each contain central conductors 26 and 21, tubular conductors 28 and 29, intermediate insulation 30 and 3|, and outer insulation 32 and 33, respectively.
The cable ends 20 and 2l are prepared similarly as indicated for terminal connections.
The inner ferrules 22 and 23 are slipped under the tubular conductors 28 and 29, as previously described. Thereafter the outer ferrule 24 is 5o placed over one cable end and pushed to one side to expose the inner conductor. The inner ferrule 25 is then connected to the inner cable ends 25 and 21 and indented thereto as at 34 and 35. The outer ferrule'is pulled back into position so that the two ends thereof are positioned over the inner ferrules with the tubular conductors inbetween.
circumferential crimps 38 and 31 are applied to the ends thereof to secure the outer ferrule 24 into electrical and mechanical engagement with the tubular cable conductors. The assembled view is shown in Fig. 4. The outer conductors I3 and 28 are preferably of the braided type which may be stripped from the insulation without damage to either, in order that the inner ferrules may be inserted thereunder. The inner ferrules support the crimping pressures and prevent .the insulation from being crushed and insure a good electrical contact with the braided conductor and the outer ferrule.
Tools for performing the indenting and crimping operation are illustrated in pending applications Serial No. 510,426, now abandoned,A and Serial No. 563,029, now Patent No. 2,457,538, issued December 28, 1948, respectively.
I have thus described my invention, but I desire it understood that it is not confined to -the particular forms or uses shown and described, the same being merely illustrative. and that the invention may be carried out in other ways without departing from the spirit of my invention, and, therefore, I claim broadly the right to employ all equivalent instrumentalities coming within the scope of the appended claims, and by means of which, objects of my invention are attained and new results accomplished, as it is obvious that the particular embodiments hereinV separated at one end thereof from the layer of insulating material, an inner conductor sleeve having a tubular end made of metal attached to the end of the inner conductor, to permit transmitting current therefrom, said inner conductor sleeve having means at the remaining end for electrical attachment to another conductor, a rigid inner tubular ferrule made of non-collapsible metal positioned within the separated portion of the outer conductor and encircling the inner conductor, an outer ferrule made of crimp.A
able metal encircling the outer conductor and positioned directly above the inner tubular ferrule, said outer ferrule being crimped to the inner tubular ferrule with the outer conductor being positioned therebetween, and extending means for electrically connecting the outer ferrule to another conductor.
2. A connection for transmitting current, comprising a coaxial cable having inner and outer conductors spaced apart by a layer of insulating material, the outer conductor made of hollow readily expansible stranded and braided metal separated at one end thereof from the layer of insulating material, an inner conductor sleeve having a tubular'end made oi metal attached to the end of the inner conductor, to permit transmitting current therefrom, said inner 'conductor sleeve terminating in a connecting lug section. a rigid inner tubular ferrule made of non-collapsible metal positioned within the separated portion of the outer conductor and encircling the inner conductor, an outer ferrule made of crimlpable metal encircling the outer conductor and positioned directly above the inner tubular ferrule, said outer ferrule being crimpedI to the inner tubular ferrule with the outer conductor positioned therebetween, and a terminal conductor positioned between the outer conductor and the outer ferrule.
3. A connection for splicing electrical coaxialI cables, said coaxial cables having inner and outer conductors spaced apart by a layer of insulating material, the outer conductors made of hollow readily expansible stranded and braided metal separated at oneend thereof from the layer of insulating material, an inner hollow metal conductor sleeve receiving the adjacent ends of the inner conductor and indented thereto, a rigid inner tubular ferrule made of non-collapsible metal 'positioned Within the separated portion of each of the outer conductors and encircling the inner conductors, an outer ferrule made of crimpable metal extending between and encircling the outer conductors and .positioned directly above the inner tubular'ferrules, said outer ferrule being crimped to the inner tubular ferrules with the outer conductors being positioned therebetween.
HENRY PETER DUPRE.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTs
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US470514 *||Mar 8, 1892||Lightning-conductor|
|US1718817 *||Apr 1, 1925||Jun 25, 1929||Condit Electrical Mfg Corp||Cable connecter|
|US1886086 *||Sep 8, 1928||Nov 1, 1932||American Brass Co||Connecter for cables|
|US1927382 *||Sep 10, 1930||Sep 19, 1933||Gen Cable Corp||Electric connecter|
|US1981753 *||Jul 21, 1932||Nov 20, 1934||Pearson Harold J C||Electric connecter|
|US1989893 *||Apr 25, 1932||Feb 5, 1935||Mayme C Taylor||Ignition cable|
|US2064129 *||Dec 8, 1934||Dec 15, 1936||Temple Jr Robert||Method and apparatus for forming joints|
|US2305473 *||Dec 17, 1940||Dec 15, 1942||Bell Telephone Labor Inc||Method and means for joining hollow bodies|
|US2385792 *||Aug 17, 1942||Oct 2, 1945||Aircraft Marine Prod Inc||Electrical connector|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2696518 *||Oct 6, 1950||Dec 7, 1954||Anaconda Wire & Cable Co||Shielded cable terminal|
|US2786095 *||Sep 12, 1952||Mar 19, 1957||Jerrold Electronics Corp||Coaxial cable connector|
|US2798113 *||Mar 29, 1954||Jul 2, 1957||Bell Telephone Labor Inc||Shield connectors|
|US2807696 *||Jan 7, 1953||Sep 24, 1957||Wiegand Co Edwin L||Electric heating devices|
|US2827508 *||Feb 24, 1953||Mar 18, 1958||Anaconda Wire & Cable Co||Terminal assembly for shielded cables|
|US2862994 *||Dec 14, 1955||Dec 2, 1958||Aircraft Marine Prod Inc||Electrical connector|
|US2889394 *||Oct 6, 1954||Jun 2, 1959||Burndy Corp||Shielded and coaxial cable connection|
|US2890267 *||Apr 29, 1957||Jun 9, 1959||Amp Inc||Shielded braid terminator|
|US2901528 *||Dec 24, 1957||Aug 25, 1959||Burndy Corp||Wire connector|
|US2904619 *||Jul 23, 1954||Sep 15, 1959||Amp Inc||Shielded wire connectors|
|US2929862 *||Oct 17, 1956||Mar 22, 1960||Burndy Corp||Compressible insulated connector for a shielded cable|
|US2937228 *||Dec 29, 1958||May 17, 1960||Robinson Machine Works Inc||Coaxial cable splice|
|US2941028 *||Aug 10, 1956||Jun 14, 1960||Phelps Dodge Copper Prod||Solderless coaxial cable fitting|
|US2954420 *||Dec 3, 1957||Sep 27, 1960||Thomas & Betts Corp||Insulated grounding sheath connectors|
|US3001003 *||Jan 14, 1960||Sep 19, 1961||Robinson Machine Works Inc||Coaxial cable splice|
|US3002046 *||Apr 20, 1959||Sep 26, 1961||Homer W Clapper||Swaged end for stranded metal mechanical cable|
|US3010183 *||Nov 23, 1956||Nov 28, 1961||Amp Inc||Method and apparatus for forming a crimped connection|
|US3089115 *||Oct 20, 1960||May 7, 1963||Burndy Corp||Tapered pin coaxial connection|
|US3089915 *||Jun 27, 1960||May 14, 1963||Walter A Plummer||Electrically shielded tubular jacket|
|US3112977 *||Jan 11, 1962||Dec 3, 1963||Burndy Corp||Coaxial cable connector|
|US3151211 *||Aug 4, 1961||Sep 29, 1964||Sperry Rand Corp||Means for connecting coaxial cables|
|US3179914 *||Nov 6, 1962||Apr 20, 1965||Ibm||Coaxial line connector|
|US3195098 *||Aug 5, 1963||Jul 13, 1965||Douglas Aircraft Co Inc||Coaxial cable connector|
|US3217519 *||Nov 21, 1963||Nov 16, 1965||Amp Inc||Coaxial crimping tool|
|US3329764 *||May 17, 1965||Jul 4, 1967||Jr John H Tanges||Conductive plastic cable shield|
|US3349166 *||Aug 6, 1965||Oct 24, 1967||Amp Inc||Connector fitting|
|US3350500 *||Dec 29, 1964||Oct 31, 1967||Amp Inc||Connections for coaxial cable means|
|US3353129 *||Oct 24, 1965||Nov 14, 1967||Gen Electric||High voltage electric induction apparatus|
|US3441659 *||Feb 13, 1967||Apr 29, 1969||Amp Inc||Shielded heater cable connection|
|US3594691 *||Aug 11, 1969||Jul 20, 1971||Anaconda Wire & Cable Co||Method and means for connecting cable shielding|
|US3872237 *||Apr 3, 1974||Mar 18, 1975||Int Standard Electric Corp||Joint for coaxial cable end|
|US4269469 *||Apr 13, 1979||May 26, 1981||Souriau & Cie||Contact terminal connector|
|US5468911 *||Aug 16, 1993||Nov 21, 1995||Framatome Connectors International||Screening hull for electrical cable|
|US5722841 *||Oct 16, 1996||Mar 3, 1998||Osram Sylvania Inc.||Ground member and conductor module containing same|
|US5817978 *||Aug 22, 1996||Oct 6, 1998||Axon 'cable S.A.||Device and method for producing a splice for cladded cables|
|DE1081534B *||May 6, 1957||May 12, 1960||Amp Inc||Elektrischer Presshuelsenverbinder|
|DE1515419B *||Apr 24, 1963||Nov 6, 1969||Amp Inc||Andrueckbare Klemme zum Anschluss an den geflochtenen Abschirmmantel eines elektrischen Kabels|
|DE19634065B4 *||Aug 23, 1996||Jul 3, 2008||Axon'cable S.A.||Spleißvorrichtung und Verfahren zur Herstellung einer Spleißstelle für abgeschirmte Kabel|
|EP0384053A1 *||Feb 23, 1989||Aug 29, 1990||Raychem Limited||Device for axial strain relief|
|U.S. Classification||174/88.00C, 439/879, 174/75.00C, 439/877|