US3851092A - Hose retaining device for liquid cooled flexible electrical cable - Google Patents

Hose retaining device for liquid cooled flexible electrical cable Download PDF

Info

Publication number
US3851092A
US3851092A US00455223A US45522374A US3851092A US 3851092 A US3851092 A US 3851092A US 00455223 A US00455223 A US 00455223A US 45522374 A US45522374 A US 45522374A US 3851092 A US3851092 A US 3851092A
Authority
US
United States
Prior art keywords
terminal
cable
hose
set forth
anchor block
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
US00455223A
Other languages
English (en)
Inventor
L Talley
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.)
WATTEREDGE UNIFLEX
WATTEREDGE UNIFLEX INC US
Original Assignee
WATTEREDGE UNIFLEX
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.)
Filing date
Publication date
Application filed by WATTEREDGE UNIFLEX filed Critical WATTEREDGE UNIFLEX
Priority to US00455223A priority Critical patent/US3851092A/en
Priority to CA205,816A priority patent/CA1021414A/en
Priority to DE2438304A priority patent/DE2438304A1/de
Priority to GB3560574A priority patent/GB1453563A/en
Priority to FR7428580A priority patent/FR2266414B3/fr
Priority to IT69845/74A priority patent/IT1020837B/it
Priority to SE7411958A priority patent/SE400676B/xx
Priority to JP11096274A priority patent/JPS50128192A/ja
Application granted granted Critical
Publication of US3851092A publication Critical patent/US3851092A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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

Definitions

  • a liquid cooled flexible electric cable including a terminal having a projecting end which is adapted to be fixed to a conductor.
  • a hose is clamped to the terminal with clamp means encircling the hose and clamping the same to the terminal to form a liquid-tight connection between the hose and terminal.
  • a retainer either rigid or flexible is provided extending between the clamp means and the projecting end to maintain the hose connected to the terminal on continued use and flexing of the cable. Water or other coolant is circulated through the cable.
  • This invention relates generally as indicated to liquid cooled flexible electrical cable and more particularly to certain improvements in the hose-terminal connection which results in longer cable life.
  • Hollow core water-cooled cables are used in many applications transmitting electricity from fixed transformers, for example, to movable applications such as electric furnaces, welders, magnets, and the like.
  • movable applications such as electric furnaces, welders, magnets, and the like.
  • considerable flexibility is required to permit, for example, electrodes to be removed, or the entire furnace to be tilted for pouring or charging.
  • the terminals are connected to the conductor in the cable which surrounds ahollow core and a hose is clamped to each terminal of the cable so that liquid coolant can be circulated therethrough.
  • the hose is generally of rubber or plastic and is attached to the terminal by banding or bolted clamps which in the service of the cable may tend to become loose. It has been found that the flexing of the hose is most severe at the terminal and over a period of time,
  • the rubber or plastic material tends to extrude from under the bands or clamps which encircle the hose ends.
  • the bands and clamps thus tend to become loose.
  • extrusion is normally caused by pressure of the bands or clamps, flexing at the termination, or the hose experiencing tension due to such forces as pulling or stretching.
  • the pressure applied to the inner surface of the terminal in the same manner that force is transmitted to a piston inside a cylinder.
  • the internal pressure can create a substantial force tending to push the terminal out of the hose, particularly with large diameter hose.
  • Another object is the provision of a hose retaining device in liquid cooled flexible electrical cable which will preclude separation of the terminal and hose.
  • Another principal object is the provision of a hose retaining device for electrical cable which can quickly and simply be attached between the terminal and hose to obtain the benefits herein described.
  • Another object is the provision of an inexpensive and simple device which can be employed between the projecting end of a flexible cable terminal and the hose to resist theforces tending to peel the hose off of the terminal.
  • FIG. 1 is a fragmentary side elevation of a cable terminal in accordance with the present invention
  • FIG. 2 is an elevation of the cable terminal seen from the line 2-2 of FIG. 1 with the hose and terminal partly broken away and in section;
  • FIG. 3 is a view similar to FIG. 1 on a slightly reduced scale of another embodiment of the present invention.
  • FIG. 4 is a view similar to FIG. 3 of yet another em- I to the preferred embodiment of FIGS. 1 and 2 it will be seen that the cable terminal 10 comprises an elongated flat extension I 1 and a cup-shape cylindrical portion 12 formed integrally therewith.
  • the cup-shape portion 12 includes an annular skirt 13 having circumferential axially spaced ridges 14 to which the hose 15 is secured by clamp means encircling the hose.
  • Such clamp means is in the form of a plurality of axially spaced clamping bands which encircle the end of the hose 15 compressing the same against the skirt 13 of the terminal. In the illustrated preferred embodiment there are shown four such clamp means, l6, 17, 18 and 19, although it will be appreciated that the number of such clamping bands may vary, as for example from 2 to about 5.
  • buckles 20 may be employed wherein the band passes through a loop and then folds back on itself, being held in place by protrusions on the band.
  • Other types of securing devices may be employed in connection with the band, such as crimped sleeves, or sleeves which are crimped and indented to lock the banding in place.
  • sleeves may be employed which are secured by screws.
  • a preferred type of buckle is that manufactured and sold under the brand name BAND-IT by the Band-It Company of Denver, Colo.
  • the terminal 10 is preferably carefully machined from a copper or aluminum casting and is highly pol ished and silver-plated for improved electrical conductivity.
  • the extension 11 is provided with a plurality of transverse holes seen at 22 so that such extension may be secured firmly to a transformer or furnace conductor as seen at 23 in phantom lines.
  • the flat sides of the extension 11 thus provide flat silver-plated contact surfaces.
  • the end of the extension 11 may be provided with lifting eyes seen at 24 and 25.
  • the extension also has a longitudinally extending central passage 27, the end of which is tapped as indicated at 28. Such passage communicates with the interior of the cup-shape portion 12 so that cooling liquid may be circulated through the cable.
  • the cable conductor 30 may be in the form of copper cables or strands and is secured within the cup-shape portion 12 of the terminal between the skirt l3 and sleeve 31'.
  • the conductor 30 may be secured by soldering or brazing and also preferably by a differential spring as seen for example in applicants US. Pat. No. 3,548,077 entitled Differential Spring Conduit Support.
  • hose retainer Extending between the hose and the terminal extension 11 at each edge of the terminal extension is a hose retainer as seen at 32 and 33. Since such hose retainers are identical in form, only the hose retainer 33 will be described in detail.
  • An anchor block 35 is secured to the edge of the extension 11 by the fasteners indicated at 36 and 37.
  • a D ring 38 extends through a transverse hole 39 in the anchor block and provides a flexible link between the anchor block and banding 40. Such banding extends through the ring 38 and beneath the first band clamp 16 and around the other band clamps 17, 18 and 19 with the ends of such banding being secured together by buckle 41.
  • the retainer includes the anchor, which is physically attached to the terminal extension, the D ring, which has been found to reduce wear, and the banding which is physically attached or interleaved with the banding clamps of the hose thus forming a flexible connection between the terminal and the hose clamping means. Accordingly, if the hose starts to slip down off of the terminal skirt outer surface, the retainers come under tension retaining the hose in its proper position.
  • the materials of the retainer are preferably a nonmagnetic material such as copper, aluminum, bronze or bronze alloys, certain alloys of stainless steel, nylon strap or rod, glass fiber strips or rod, or high pressure phenolic laminates.
  • the terminal 43 has secured to the edges of the extension 44 anchor blocks 45 and 46.
  • anchor blocks may be secured by the fasteners illustrated or other suitable means.
  • the anchor blocks are provided with L-shape passages 47 through which the band 48 bay be threaded.
  • band 48 extends beneath the first hose clamp band 49 and about the other two hose clamp bands 50 and 51.
  • the two ends of the band 48 are then secured together by buckle or crimped sleeve 52.
  • the hose 53 is thus retained against slippage with respect to the terminal 43.
  • extension 44 of the terminal 43 is secured directly to the clamps 56 and 57 for the hose 53 through rigid retainer 58.
  • the hose clamps 56 and 57 may be tightened by bolt-type fasteners 60 which on one side extend through apertures 61 in the offset projecting end 62 of the retainer 58.
  • the other end of the retainer is secured directly to the edge of the extension 44 of the terminal 43 by the fasteners seen at 63.
  • only one retainer is normally sufficient, although a second retainer may be employed.
  • a liquid cooled flexible electrical cable wherein retainers are provided extending between the clamp means for the hose and projecting end of the terminal to maintain the hose properly connected to the terminal on continued use and flexing of the cable.
  • a liquid cooled flexible electrical cable comprising a terminal having a projecting end adapted to be fixed to a conductor, a hose surrounding said terminal, clamp means encircling said hose and clamping the same to said terminal to form a liquid-tight connection between said hose and terminal, and retainer means extending between said clamp means and said projecting end to maintain the hose connected to said terminal on continued use and flexing of said cable.
  • a cable as set forth in claim 7 including two fasteners securing said anchor block to said projecting end of said terminal, and a transverse hole in said anchor block with a ring extending therethrough.
  • a cable as set forth in claim 7 including an L-shape passage in said anchor block, and banding threaded through said passage and secured to said clamp means.
  • said retainer means includes offset ends, one being fastened to said terminal extension and the other to said clamp

Landscapes

  • Insulated Conductors (AREA)
  • Gas Or Oil Filled Cable Accessories (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Supports For Pipes And Cables (AREA)
US00455223A 1974-03-27 1974-03-27 Hose retaining device for liquid cooled flexible electrical cable Expired - Lifetime US3851092A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US00455223A US3851092A (en) 1974-03-27 1974-03-27 Hose retaining device for liquid cooled flexible electrical cable
CA205,816A CA1021414A (en) 1974-03-27 1974-07-29 Hose retaining device for liquid cooled flexible electrical cable
DE2438304A DE2438304A1 (de) 1974-03-27 1974-08-09 Fluessigkeitsgekuehltes, flexibles elektrisches kabel
GB3560574A GB1453563A (en) 1974-03-27 1974-08-13 Terminal for liquid cooled flexible electrical cable
FR7428580A FR2266414B3 (enExample) 1974-03-27 1974-08-20
IT69845/74A IT1020837B (it) 1974-03-27 1974-09-20 Dispositivo di fissaggio per tubi per cavi elettrici flessibili raf freddati a liquido
SE7411958A SE400676B (sv) 1974-03-27 1974-09-24 Vetskekyld, bojlig, elektrisk kabel, forsedd med ett kontaktdon
JP11096274A JPS50128192A (enExample) 1974-03-27 1974-09-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00455223A US3851092A (en) 1974-03-27 1974-03-27 Hose retaining device for liquid cooled flexible electrical cable

Publications (1)

Publication Number Publication Date
US3851092A true US3851092A (en) 1974-11-26

Family

ID=23807920

Family Applications (1)

Application Number Title Priority Date Filing Date
US00455223A Expired - Lifetime US3851092A (en) 1974-03-27 1974-03-27 Hose retaining device for liquid cooled flexible electrical cable

Country Status (8)

Country Link
US (1) US3851092A (enExample)
JP (1) JPS50128192A (enExample)
CA (1) CA1021414A (enExample)
DE (1) DE2438304A1 (enExample)
FR (1) FR2266414B3 (enExample)
GB (1) GB1453563A (enExample)
IT (1) IT1020837B (enExample)
SE (1) SE400676B (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140144665A1 (en) * 2010-09-15 2014-05-29 Hilde Schlögl Line arrangement and method for producing same
US9321362B2 (en) 2014-02-05 2016-04-26 Tesia Motors, Inc. Cooling of charging cable
US9543677B1 (en) 2015-07-29 2017-01-10 Stein Industries Inc. Quick connector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2943133A (en) * 1957-07-05 1960-06-28 Chester F Leathers Welding cable
US3456064A (en) * 1967-08-29 1969-07-15 William A Toto Connectors for flexible welding cable assemblies
US3801724A (en) * 1972-09-15 1974-04-02 D Goodman Safety-anchored multi-conductor water-cooled electric arc furnace cable

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2943133A (en) * 1957-07-05 1960-06-28 Chester F Leathers Welding cable
US3456064A (en) * 1967-08-29 1969-07-15 William A Toto Connectors for flexible welding cable assemblies
US3801724A (en) * 1972-09-15 1974-04-02 D Goodman Safety-anchored multi-conductor water-cooled electric arc furnace cable

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140144665A1 (en) * 2010-09-15 2014-05-29 Hilde Schlögl Line arrangement and method for producing same
US9099217B2 (en) * 2010-09-15 2015-08-04 Hilde Schlägl Line arrangement and method for producing same
US9321362B2 (en) 2014-02-05 2016-04-26 Tesia Motors, Inc. Cooling of charging cable
US20160200206A1 (en) * 2014-02-05 2016-07-14 Tesla Motors, Inc. Cooling of charging cable
US9701210B2 (en) * 2014-02-05 2017-07-11 Tesla, Inc. Cooling of charging cable
US9543677B1 (en) 2015-07-29 2017-01-10 Stein Industries Inc. Quick connector

Also Published As

Publication number Publication date
JPS50128192A (enExample) 1975-10-08
GB1453563A (en) 1976-10-27
FR2266414B3 (enExample) 1976-10-22
DE2438304A1 (de) 1975-10-09
CA1021414A (en) 1977-11-22
FR2266414A1 (enExample) 1975-10-24
SE7411958L (enExample) 1975-09-29
IT1020837B (it) 1977-12-30
SE400676B (sv) 1978-04-03

Similar Documents

Publication Publication Date Title
US3603913A (en) Strain relief clamp for electrical wiring connector
US2466499A (en) Swivel for electric cables
US3851092A (en) Hose retaining device for liquid cooled flexible electrical cable
US2355166A (en) Cable clamping means
US2869091A (en) Jumper for interconnecting power control conductors of railway diesel units and the like
CN111756009A (zh) 一种用于针式绝缘子的紧线器
US3936592A (en) Electrical bushing having a central conductor with large planar terminal portions at each end
US4237335A (en) Multiple joint box utilizing a thermoplastic clamping sleeve principle
US1864688A (en) Ground rod clamp
US3783439A (en) Battery charger adapter
US3973077A (en) Bushing for electrical connection
US2616139A (en) Antenna tension take-up unit
US1891920A (en) Electrical connecting device
FR2309054A1 (fr) Dispositif d'amarrage d'un cable electrique sur une poignee de fiche
US1755971A (en) Insulator
EP0094122B1 (en) Clamp
GB1477904A (en) Liquid-cooled heavy-current connection cables suitable for use with electric arc melting furnaces and the like
US3725976A (en) Detachable adjustable drive belt
US1997430A (en) Solderless connecter
CN211126882U (zh) 一种新型的智能电脑连接线收束装置
US2148960A (en) Solderless connector
GB1477903A (en) Liquid-cooled heavy-current connection cables suitable for use with electric arc melting furnaces and the like
US4070894A (en) Crimping device
CA1079826A (en) Termination for stranded cable of a gas-insulated transmission line
US4409432A (en) Binding retaining an electrical conductor in a circumferential groove around a rigid insulator