US3404369A - Welding cable and terminal assembly - Google Patents
Welding cable and terminal assembly Download PDFInfo
- Publication number
- US3404369A US3404369A US576666A US57666666A US3404369A US 3404369 A US3404369 A US 3404369A US 576666 A US576666 A US 576666A US 57666666 A US57666666 A US 57666666A US 3404369 A US3404369 A US 3404369A
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- US
- United States
- Prior art keywords
- terminal
- sleeves
- ropes
- cable
- skirt
- 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
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/001—Power supply cables for the electrodes of electric-welding apparatus or electric-arc furnaces
-
- 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
Definitions
- Each rope is encased in a rubber sleeve throughout most of its length, but the bare ends of the strands project beyond the rubber sleeves and all the strands of all ropes are compressed in and electrically connected to a tubular sheet metal terminal.
- the terminal has an integral flared skirt diverging from the portion which is compressed onto the strands and overlapping and compressed against all of the outer rubber sleeves in an area spaced from its free edge. Beyond such area and to its free edge the skirt is flared outwardly at a steeper angle.
- the present invention relates to electrical conductors, and particularly to flexible conductor and terminal assemblies adapted to carry high amperage electric currents.
- the overall object of the invention is to provide an improved flexible conductor able to withstand repeated flexing about relatively short radii and suitable for the severe service conditions encountered by cables employed to conduct welding current to the electrodes of resistance welding machines.
- a more specific object is to provide an improved cable and terminal assembly of the indicated character which attains an increased effective service life.
- FIGURE 1 is a perspective view of an electrical conductor constructed in accordance with the present invention.
- FIGURES 2, 3 and 4 are sectional views on a larger scale taken substantially as indicated by the lines and arrows II-II, IIIIII and IVIV respectively of FIG- URE 1. 7
- my improved cable is designed to be employed without water cooling, and preferably is constructed of a plurality of separate ropes 10-16 inclusive, rather than being formed as a single large cable, even though all parts are of like polarity.
- Such subdivided construction is-employed in order to reduce the frictional wear between the strands.
- Each rope is comprised of a large number of fine strands of loosely twisted soft copper wire, for maximum flexibility, and each rope is preferably constructed in accordance with my United States Patent No. 3,079,460.
- Each rope is enclosed in a plastic sleeve 18 of a suitable elastomer such as soft synthetic rubber, the six ropes 10-15 being symmetrically grouped about a central core rope 16, and ropes 10-15 having an overall helical twist.
- a terminal or lug portion which may be formed of an initially cylindrical silver plated copper tube.
- a portion 22 of the terminal tube 20 is tightly compressed upon the bare extremities of the ropes to form anelectrical connection therewith.
- Such electrical connection portion 22 is pressed to rectangular form, as indicated in FIGURES 1 and 4, and may be drilled as indicated at 23 for attachment to a suitable terminal connector (unshown).
- This general method of forming a terminal lug portion is now known in the art, and as will be appreciated, the portions 22 are compressed under very high pressure to substantially eliminate spacing between the strands and form an efficient connection.
- the terminal structure is provided with an integral flared skirt formed as a continuous rearward extension of the connecting portion 22 and generally designated 25.
- the skirt portion 25 substantially overlaps the rubber sleeves 18, which extend to a position relatively close to but spaced from the fully compressed connecting portion 22, as best illustrated in FIGURE 4.
- the rubber sleeves are secured with respect to the skirt. While such securance could be effected by means such as an adhesive, I have found it effective simply to compress the skirt portion sufficiently to grip the sleeves, as indicated in FIGURE 4.
- the rubber sleeves 18 not only reduce friction between the individual ropes when the cable is flexed or distorted by electrical reactance, and function to reduce wear by preventing direct engagement between the skirt 25 and the ropes, but perform an additional mechanical function when the cable is bent in the area adjacent the terminal. At such times the forces transmitted through the sleeves 18, because of the fact that they are tightly held against longitudinal movement with relation to one another, force a larger proportion of the bending to occur farther away from the terminal, reducing localized bending and increasing the radius of bend. Highly localized forces tending to break the individual strands, and localized shortradius bending, are thus materially reduced.
- the terminal is preferably formed in suitable compression dies, and the excess metal resulting from the reduction of overall cross sectional area of the terminal tube is displaced inwardly in longitudinal lines along the side edges of the terminal, as indicated at 28.
- a flexible isopolarity electrical cable assembly including a plurality of multi-strand conductor ropes, a'plurality of flexible sleeves, one on each rope, the sleeves being shorter than the ropes and a common end of all ropes projecting beyond their sleeves, and a connecting terminal comprising a metallic portion electrically connected to said projecting ends, the novelty which comprises a skirt portion rigid with said terminal and overlapping and secured with respect to all of said flexible sleeves.
Description
Oct. 1, 1968 E, GROW; 3,404,369
WELDING CABLE AND TERMINAL ASSEMBLY Filed Sept. 1, 1966 i: kill.
INVENTOR. Zdr/Iral c BY /%M 52 United States Patehtofl 3,404,369 Patented Oct. 1, 1968 3,404,369 WELDING CABLE AND TERMINAL ASSEMBLY Earl I. Grove, Walled Lake, Mich., assignor to Gar Wood Industries, Inc., Wayne, Mich., a corporation of Michigan Filed Sept. 1, 1966, Ser. No. 576,666 2 Claims. (Cl. 339-223) ABSTRACT OF THE DISCLOSURE A flexible isopolarity cable is formed of metallic strands which are grouped into a plurality of rope sections. Each rope is encased in a rubber sleeve throughout most of its length, but the bare ends of the strands project beyond the rubber sleeves and all the strands of all ropes are compressed in and electrically connected to a tubular sheet metal terminal. The terminal has an integral flared skirt diverging from the portion which is compressed onto the strands and overlapping and compressed against all of the outer rubber sleeves in an area spaced from its free edge. Beyond such area and to its free edge the skirt is flared outwardly at a steeper angle.
The present invention relates to electrical conductors, and particularly to flexible conductor and terminal assemblies adapted to carry high amperage electric currents. The overall object of the invention is to provide an improved flexible conductor able to withstand repeated flexing about relatively short radii and suitable for the severe service conditions encountered by cables employed to conduct welding current to the electrodes of resistance welding machines.
A more specific object is to provide an improved cable and terminal assembly of the indicated character which attains an increased effective service life.
Other objects and advantages will become apparent upon consideration of the present disclosure in its entirety.
In the drawing:
FIGURE 1 is a perspective view of an electrical conductor constructed in accordance with the present invention; and
FIGURES 2, 3 and 4 are sectional views on a larger scale taken substantially as indicated by the lines and arrows II-II, IIIIII and IVIV respectively of FIG- URE 1. 7
Referring now to the drawing, my improved cable is designed to be employed without water cooling, and preferably is constructed of a plurality of separate ropes 10-16 inclusive, rather than being formed as a single large cable, even though all parts are of like polarity. Such subdivided construction is-employed in order to reduce the frictional wear between the strands. Each rope is comprised of a large number of fine strands of loosely twisted soft copper wire, for maximum flexibility, and each rope is preferably constructed in accordance with my United States Patent No. 3,079,460. Each rope is enclosed in a plastic sleeve 18 of a suitable elastomer such as soft synthetic rubber, the six ropes 10-15 being symmetrically grouped about a central core rope 16, and ropes 10-15 having an overall helical twist.
At each end the ropes extend beyond the sleeves and the cable is provided with a terminal or lug portion which may be formed of an initially cylindrical silver plated copper tube. A portion 22 of the terminal tube 20 is tightly compressed upon the bare extremities of the ropes to form anelectrical connection therewith. Such electrical connection portion 22 is pressed to rectangular form, as indicated in FIGURES 1 and 4, and may be drilled as indicated at 23 for attachment to a suitable terminal connector (unshown). This general method of forming a terminal lug portion is now known in the art, and as will be appreciated, the portions 22 are compressed under very high pressure to substantially eliminate spacing between the strands and form an efficient connection.
The terminal structure is provided with an integral flared skirt formed as a continuous rearward extension of the connecting portion 22 and generally designated 25. The skirt portion 25 substantially overlaps the rubber sleeves 18, which extend to a position relatively close to but spaced from the fully compressed connecting portion 22, as best illustrated in FIGURE 4. The rubber sleeves are secured with respect to the skirt. While such securance could be effected by means such as an adhesive, I have found it effective simply to compress the skirt portion sufficiently to grip the sleeves, as indicated in FIGURE 4. This is effected by extending the sleeves to a position relatively close to the fully compressed connecting section 22, and in an area 26 near its free edge the skirt is given a final flaring bend which also has the effect of forming a relatively pressed-in section near the free edge which constricts and grips the encircled portions of the rubber sleeves. The frictional engagement between the skirt portion 25 and the sleeves 18 is tight enough so that the sleeves cannot be pulled from the skirt or shift longitudinally with relation to the terminal or to each other under the forces resulting from flexing the cable.
The rubber sleeves 18 not only reduce friction between the individual ropes when the cable is flexed or distorted by electrical reactance, and function to reduce wear by preventing direct engagement between the skirt 25 and the ropes, but perform an additional mechanical function when the cable is bent in the area adjacent the terminal. At such times the forces transmitted through the sleeves 18, because of the fact that they are tightly held against longitudinal movement with relation to one another, force a larger proportion of the bending to occur farther away from the terminal, reducing localized bending and increasing the radius of bend. Highly localized forces tending to break the individual strands, and localized shortradius bending, are thus materially reduced.
In a conductor of this class wherein the ropes are individually sleeved despite being of the same polarity, the resultant spacing of the ropes also achieves an electrical benefit by reason of the reduction of impedance.
The terminal is preferably formed in suitable compression dies, and the excess metal resulting from the reduction of overall cross sectional area of the terminal tube is displaced inwardly in longitudinal lines along the side edges of the terminal, as indicated at 28.
While it will be apparent that the preferred embodiment of the invention disclosed is well calculated to fulfill the objects stated above, it will be appreciated that the invention is susceptible to modification, variation and change without departing from the proper scope or .fair meaning of the subjoined claims.
What is claimed is:
1. In a flexible isopolarity electrical cable assembly including a plurality of multi-strand conductor ropes, a'plurality of flexible sleeves, one on each rope, the sleeves being shorter than the ropes and a common end of all ropes projecting beyond their sleeves, and a connecting terminal comprising a metallic portion electrically connected to said projecting ends, the novelty which comprises a skirt portion rigid with said terminal and overlapping and secured with respect to all of said flexible sleeves.
2. An assembly as defined in claim 1 wherein the sleeves are formed of an elastomer and the terminal comprises a metal tube having at one end a connecting portion surrounding and compressed upon said projecting ends of the ropes, an integral intermediate skirt portion of greater perimeter compressed against the sleeves, and
3 4 an integral outwardly flared portion at its other end over- 2,480,280 8/1949 Bergan. lying and projecting away from the sleeves. 3,156,760 11/1964 Grove.
References Cited FOREIGN PATENTS UNITED STATES PATENTS 5 511,473 10/1930 Germany.
1,650,295 11/ 1927 Patten 339-223 LARAMIE E. ASKIN, Primary Examiner.
" 1,904,162 14/1933 Milliken.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US576666A US3404369A (en) | 1966-09-01 | 1966-09-01 | Welding cable and terminal assembly |
GB37087/67A GB1144267A (en) | 1966-09-01 | 1967-08-11 | Improved electrical cable assembly |
JP5293667A JPS468546B1 (en) | 1966-09-01 | 1967-08-18 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US576666A US3404369A (en) | 1966-09-01 | 1966-09-01 | Welding cable and terminal assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
US3404369A true US3404369A (en) | 1968-10-01 |
Family
ID=24305435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US576666A Expired - Lifetime US3404369A (en) | 1966-09-01 | 1966-09-01 | Welding cable and terminal assembly |
Country Status (3)
Country | Link |
---|---|
US (1) | US3404369A (en) |
JP (1) | JPS468546B1 (en) |
GB (1) | GB1144267A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3660592A (en) * | 1970-02-27 | 1972-05-02 | Haveg Industries Inc | Anti-corona electrical conductor |
FR2176101A1 (en) * | 1972-03-16 | 1973-10-26 | Delta Metal Electronics | |
US4002820A (en) * | 1974-05-03 | 1977-01-11 | Canada Wire And Cable Limited | Power cable having an extensible ground check conductor |
FR2489608A1 (en) * | 1980-06-25 | 1982-03-05 | Naito Mitsuo | TIP FOR AIR-COOLED CABLE AND METHOD FOR MANUFACTURING THE SAME |
US4392703A (en) * | 1978-03-27 | 1983-07-12 | The Bendix Corporation | Electrical conductor having an integral electrical contact |
DE3826421A1 (en) * | 1988-08-03 | 1990-02-08 | Helu Technik Heinrich Luft Gmb | Single-conductor connecting cable for electrical welding tongs |
DE4003251A1 (en) * | 1990-02-03 | 1991-08-22 | Franz Pitsch | Secondary cable connection for e.g. welding electrodes - comprises copper strands encircled by compressed copper sheet with interlocking longitudinal edges |
EP1450440A1 (en) * | 2003-02-21 | 2004-08-25 | Hager Electro S.A.S. | Electrical connection device more particularly between a breaker and a differential unit |
US20060148276A1 (en) * | 2003-01-29 | 2006-07-06 | Jean-Pierre Renaudin | Electrical connection device for bushing which supplies filaments, such as glass filaments |
US20110186352A1 (en) * | 2005-12-22 | 2011-08-04 | David Charles Cecil | Integral bonding attachment |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4467161A (en) * | 1982-11-10 | 1984-08-21 | G & W Electric Company | Switch apparatus |
JP3211935B2 (en) * | 1995-07-19 | 2001-09-25 | 矢崎総業株式会社 | Electrode post connection terminal of battery and method of manufacturing electrode post connection terminal |
CN106952620B (en) | 2017-03-09 | 2018-09-25 | 深圳市国华光电研究院 | The bistable state driving method and relevant electric moistening display of electric moistening display |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1650295A (en) * | 1922-10-26 | 1927-11-22 | Joseph E Patten | Electrical conductor terminal |
DE511473C (en) * | 1930-10-30 | Siemens Schuckertwerke Akt Ges | Curved conductor composed of several layers of wire strands for power supply for moving parts of switching devices | |
US1904162A (en) * | 1930-08-13 | 1933-04-18 | Milliken Humphreys | Electrical cable |
US2480280A (en) * | 1945-09-24 | 1949-08-30 | Thomas & Betts Corp | Electric connector |
US3156760A (en) * | 1963-06-11 | 1964-11-10 | Gar Wood Ind Inc | Welding cable with improved conductor orientation adjacent the terminals |
-
1966
- 1966-09-01 US US576666A patent/US3404369A/en not_active Expired - Lifetime
-
1967
- 1967-08-11 GB GB37087/67A patent/GB1144267A/en not_active Expired
- 1967-08-18 JP JP5293667A patent/JPS468546B1/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE511473C (en) * | 1930-10-30 | Siemens Schuckertwerke Akt Ges | Curved conductor composed of several layers of wire strands for power supply for moving parts of switching devices | |
US1650295A (en) * | 1922-10-26 | 1927-11-22 | Joseph E Patten | Electrical conductor terminal |
US1904162A (en) * | 1930-08-13 | 1933-04-18 | Milliken Humphreys | Electrical cable |
US2480280A (en) * | 1945-09-24 | 1949-08-30 | Thomas & Betts Corp | Electric connector |
US3156760A (en) * | 1963-06-11 | 1964-11-10 | Gar Wood Ind Inc | Welding cable with improved conductor orientation adjacent the terminals |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3660592A (en) * | 1970-02-27 | 1972-05-02 | Haveg Industries Inc | Anti-corona electrical conductor |
FR2176101A1 (en) * | 1972-03-16 | 1973-10-26 | Delta Metal Electronics | |
US4002820A (en) * | 1974-05-03 | 1977-01-11 | Canada Wire And Cable Limited | Power cable having an extensible ground check conductor |
US4392703A (en) * | 1978-03-27 | 1983-07-12 | The Bendix Corporation | Electrical conductor having an integral electrical contact |
US4394533A (en) * | 1980-06-25 | 1983-07-19 | Mitsuo Naito | Air-cooled cables with terminals and method of producing same |
DE3124863A1 (en) * | 1980-06-25 | 1982-03-25 | Mitsuo Kofu Yamanashi Naito | END PIECE FOR AIR-COOLED CABLES AND METHOD FOR PRODUCING THE END PIECE |
FR2489608A1 (en) * | 1980-06-25 | 1982-03-05 | Naito Mitsuo | TIP FOR AIR-COOLED CABLE AND METHOD FOR MANUFACTURING THE SAME |
DE3826421A1 (en) * | 1988-08-03 | 1990-02-08 | Helu Technik Heinrich Luft Gmb | Single-conductor connecting cable for electrical welding tongs |
DE4003251A1 (en) * | 1990-02-03 | 1991-08-22 | Franz Pitsch | Secondary cable connection for e.g. welding electrodes - comprises copper strands encircled by compressed copper sheet with interlocking longitudinal edges |
US20060148276A1 (en) * | 2003-01-29 | 2006-07-06 | Jean-Pierre Renaudin | Electrical connection device for bushing which supplies filaments, such as glass filaments |
US7232348B2 (en) * | 2003-01-29 | 2007-06-19 | Saint-Gobain Vetrotex France S.A. | Electrical connection device for bushing which supplies filaments, such as glass filaments |
EP1450440A1 (en) * | 2003-02-21 | 2004-08-25 | Hager Electro S.A.S. | Electrical connection device more particularly between a breaker and a differential unit |
US20110186352A1 (en) * | 2005-12-22 | 2011-08-04 | David Charles Cecil | Integral bonding attachment |
US8246390B2 (en) | 2005-12-22 | 2012-08-21 | Tensolite, Llc | Integral bonding attachment |
Also Published As
Publication number | Publication date |
---|---|
JPS468546B1 (en) | 1971-03-04 |
GB1144267A (en) | 1969-03-05 |
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