US3767841A - Conductor in-slot electrical connectors - Google Patents

Conductor in-slot electrical connectors Download PDF

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Publication number
US3767841A
US3767841A US00274931A US3767841DA US3767841A US 3767841 A US3767841 A US 3767841A US 00274931 A US00274931 A US 00274931A US 3767841D A US3767841D A US 3767841DA US 3767841 A US3767841 A US 3767841A
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United States
Prior art keywords
fingers
web
tongue
connecting means
extending
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Expired - Lifetime
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US00274931A
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English (en)
Inventor
L Anderson
F Deak
G Foster
J Gentry
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TE Connectivity Corp
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AMP Inc
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    • 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
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2495—Insulation penetration combined with permanent deformation of the contact member, e.g. crimping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/57—Distinct end coupler
    • Y10T403/5761—Interrupted periphery, e.g., split or segmental, etc.

Definitions

  • ABSTRACT Electrical connecting device has a channel-shaped cross-section and tongues struck up from the web of the channeL Wire receiving slots extend downwardly from the free ends of the tongues.
  • a plurality of fingers extend from the sidewalls and are adapted to be curled inwardly and downwardly to stuff a wire positioned between the sidewalls into the slots in the tongues.
  • the U.S. Patent to Marley et a1 U.S. Pat. No. 3,320,354 discloses a crimpable channel-shaped connecting device having tongues between its sidewalls which are adapted, upon crimping, to receive the end portions of wires extending axially towards each other.
  • the Marley et al connecting device is capable of forming a common connection among as many as four wires and is widely used in the telephone industry for forming butt splices (a connecting between two wires extending axially towards each other) and for making tap connections (a connection of a branch wire to a through wire).
  • 3,320,354 are adapted to be crimped by crimping tools of the types shown in U.S. Pat. Nos. 3,328,871 and 3,431,621 which perform a wire trimming operation at the time of crimping.
  • the principle embodiment of the present invention disclosed below is alsoadapted to be crimped by tools in accordance with U.S. Pat. Nos. 3,431,621 and 3,328,871.
  • Connecting devices of the type shown in U.S. Pat. No. 3,320,354 have received an enthusiastic acceptance in the telephone industry and are in widespread use. However, most electrical connections involving telephone cables are made when the ends of two multiconductor cables are spliced to each other, a procedure which requires only a butt splice for two wires which extend axially towards each other.
  • the high degree of versatility of the connector shown in U.S. Pat. No. 3,320,354 is therefore, not required for these cable splicing operations and there exists a need for a connecting device which is particularly intended for such operations.
  • the instant invention is then specifically directed to the achievement of a connecting device which can be produced in a relatively small size, which can be crimped with relatively low crimping forces, and which will have a high degree of reliability as regards both application to the wires and performance of the finished electrical connection.
  • a further object is to provide a connecting device for forming a butt splice between two wires.
  • a further object is to provide a connecting device which can be produced in relatively small sizes with a minimum of material.
  • a further object is to provide a preinsulated crimpable connecting device which will have good dielectric properties after crimping.
  • a still further object is to provide a low resistance and highly reliable crimped electrical connection to a conductor.
  • FIG. 1 is a perspective view of a section of a strip of preinsulated connecting devices in accordance with the invention.
  • FIG. 2 is a perspective view of an individual connecting device in accordance with the invention.
  • FIG. 3 is a perspective view of the connecting device of FIG. crimped onto two wires extending towards each other.
  • FIG. 4 is a end view of a connecting device in accordance with the invention positioned on an anvil of a crimping tool and showing the position of the crimping die and a wire at an early stage of the crimping operation.
  • FIGS. 5-8 are views similar to FIG. 4 but showing the positions of the parts at successive stages of the crimping operation, FIG. 8 showing the positions of the parts at the completion of the crimping operation.
  • FIGS. 9 and 10 are views taken along the lines 9-9 and 10-l0 of FIGS. 3 and l 1 (the connector being uncrimped in FIG. 11).
  • FIG. 11 is a top plan view of an uncrimped connect ing device in accordance with the invention.
  • FIGS. 12-15 are perspective views of alternative embodiments of the invention.
  • a butt splice connecting device 2 in accordance with the invention comprises a generally channel-shaped stamped and formed metallic member 4 having a web 12 and sidewalls 14, 1411.
  • a film of6 insulating material preferably Mylar (polyethyleneterephthalate)
  • Mylar polyethyleneterephthalate
  • the connecting device 2 is intended for forming a butt connection between two wires 8, 10 which extend axially toward each other.
  • the righthand end of the connecting device 2 is a mirror image of the lefthand end and the device is symmetrical about its vertical center line.
  • Each end of the connecting device 2 can, therefore, be regarded as a single connecting means and only one of these connecting means is described in detail below.
  • a pair of tongues l6, 18 are struck up from the web 4, the inner tongue 18 has a slot 20 that extends downwardly from the upper free end 22 of the tongue and the outer tongue 16 has a similar slot 23.
  • the inner ends of these slots are above the surface of the web 12 but are below the upper edges of the sidewalls 14, 14a.
  • the edges of the slots flare outwardly at the upper ends of the tongues as shown at 24 to provide guidance for the wire at the time of crimping.
  • the slot 23 in the tongue 16 which is adjacent to one end of the connector is relatively wider than the slot 20 in the inner tongue 18.
  • the width of the slot 20 in the tongue 18 is less than the diameter of the conducting core of the wire so that when the wire is forced into this slot, the edges of the slot will penetrate the wire insulation and substantially deform the conducting core and good electrical contact will be established.
  • the edges of this slot penetrate the insulation 68 and may engage the conducting core but they do not penetrate the core is integral with, and extends in-the same general direction as, its respective sidewall 14 or 14a.
  • Each finger further has an end section 36 which is joined to the proximate section by a reverse bend 38. These end sections of the fingers are directed generally inwardly and downwardly with reference to longitudinal axis of the connecting device.
  • the fingers 28, 28a are located between the planes defined by the tongues l6, l8 and have a width which is less than the spacing between these tongues so that they can be curled downwardly until they lie between the tongues.
  • the fingers 26, 26a, and 30, 30a are located on each side of the fingers 28, 28a and are spaced from the surfaces of the tongues so that they can be curled downwardly during crimping and will be beside the tongues after crimping.
  • FIGS. l-3 has additional fingers 32, 32a which are integral with the sidewalls adjacent to the ends of the connecting device. These fingers also,
  • a connecting device 2 is adapted to be crimped by a suitable crimping tool as generally disclosed in either one of US. Pat. Nos. 3,431,621 or 3,328,871.
  • the connecting device is supported on the surface 58 of an anvil 56 and is crimped by a crimping die 54 having forming surfaces 60, 62, 64.
  • the die is symmetrical about the vertical center line of FIG. 4 and has steeply convergent surfaces 60 which function to center the connector before curling thereof commences.
  • the forming surfaces 60 merge with convergent surfaces 62 which slope gently towards each other and these surfaces in turn follow reverse curves 64 which merge at a cusp 66.
  • the wire 8 will be located as generally shown in FIG. 4 above a connector supported on the surface 58 of the anvil.
  • the wire is centrally located in FIG. 4 although as a practical matter, the wire may be located anywhere in the spaceabove the connector when the die and anvil are positioned relative to each other as shown in FIG. 4. I As the die and anvil move towards each other to the position of FIG. 5, the wire is relocated, regardless of its initial position, until it is between the ends of the fingers 26, 28, 30, 26a, 28a, 30a and above the ends 42, 42a of the guide fingers 32. It will be noted in FIG. that at this stage of the crimping operation, the edge portions 7 of the insulating film 6 have been curled by the die surfaces 64 and the fingers have been bent slightly inwardly from their original divergent orientations.
  • proximate sections 34 of the fingers 26, 28, 30, 26a 28a, 30a are curled so that the end portions 36 in FIG. 3.
  • the marginal edge portions 7 of the insulation are similarly curled until they are against each other and the insulating film moves with the fingers so that in the finished connection, the opposed surfaces of this film are against each other and locked between the opposed surfaces of the deformed fingers.
  • the tongues may be substantially deformed by outward flexure of each side of each tongue with respect to' the inner ends of the slots 20.
  • the tongues are shown as being substantially deformed in FIGS. 7 and 8, a condition which will result where a relatively large wire is inserted into the slots.
  • Connectors in accordance with the invention are designed to accept a range of wire sizes and the largestwire of the range may cause noticeable deformation of the tongues while the smallest wire may not.
  • the fingers 28, 28a will be between the tongues and will have curled surfaces disposed against the insulation of the wire as shown in FIG. 9.
  • the fingers 26, 26a and 30, 30a will be similarly disposed with respect to the wire but outwardly of the tongues.
  • the guide fingers 32, 320 have curved surface portions against the upper side of the wire and function as a strain relief.
  • these guide fingers maintain the wire centered with reference to the connector so that the emergent wires extend centrally and axially-from the connection device as shown
  • Connecting devices in accordance with the invention are advantageously manufactured by stamping and forming continuous sheet metal strip. It is desirable to produce these connecting devices in the form ofa continuous ladder strip, FIG.
  • the connector in accordance with the embodiment of FIGS. 1-3 is relatively compact having an overall length of about 0.96 inch, a width of about 0.18 inch, and a height of about 0.13 inch.
  • connecting devices are produced from brass, metal stock having a thickness of 0.016 inch can be used and the connecting devices will be suitable for wires in the size range of AWG 26 to 17.
  • a salient advantage of connectors in accordance with the invention is that during crimping, the wire is accurately guided into the slots of the tongues l6, l8 and the manner in which the fingers are curled ensures stuffing of the wires to the inner ends of the slots so that electrical contact with the conducting core of the wires is assured.
  • the manner of centering the wires is shown in FIG. 47; as the die 54 moves relatively towards the anvil 56, the wire must move to the position shown in FIG. 5 and further movement of the die has the effect of curling the fingers and guiding the wire in a manner such that it moves precisely and accurately laterally of its axis until it reaches the inner ends of the slots.
  • the internal surface of insulating film 6 is engaged only by flat surfaces or smooth rounded surfaces as at the lower corners of the connecting device and curved surfaces of the formed fingers as shown in FIG. 10.
  • the fact that the insulating film is supported by smooth curved surfaces results in the achievement of a crimped connection having relatively high dielectric strength since the metallic connecting device does not have sharp edges disposed against the inner surface of the film at any location.
  • the finished crimped connection between the wire and the connecting means is rugged and durable and is not easily damaged for several reasons.
  • the tongues which are the site of the connection, are protected on each of their sides by curled fingers and these curled fingers are strong by virtue of their cylindrical shapes.
  • the tongues are thus protected against their being bent downwardly towards the web of the connecting device by an external force.
  • the fingers are partially curled and are located on each side of the tongues while the wire is being forced into the slots in the tongues, see FIGS. 7 and 8.
  • the partially curled fingers function to prevent such bending of the tongues by virtue of their locations adjacent to the tongues.
  • the web and sidewalls form a channel member which is an extremely strong and rigid structural shape.
  • Connecting devices in accordance with the invention require only a relatively low crimping force because of the fact that the crimping operation requires only that the fingers be curled downwardly as illustrated in FIGS. 5-8. It will be appreciated that the force required to carry out the curling operation on these fingers will be less, other things being equal, than the force required for bending a flat section of sheet metal. The fact that the wire is symmetrically loaded during the crimping operation also probably contributes to the low crimping forces realized.
  • the disclosed embodiment of the invention has flat insulating film on its external surface.
  • a corrugated film having corrugations running axially along the length of the connecting device, may be used as shown in U.S. Pat. No. 3,621,117.
  • the use of a corrugated insulated film may be preferred for the reason that the corrugations will interlock with each other between the opposed surfaces of the fingers so that the film will be more securely held on the crimped connecting device.
  • a corrugated insulated film has a tendency to accomodate itself to the curling operation since it can be elongated in the direction of the circumference of the connecting device.
  • FIG. 12 shows a conventional ringtongue terminal having a contact ring-tongue 76 which is integral with a web of a connection means 74.
  • This connecting means is adapted to form an electrical connection with a single wire and has the same structural features as each of the two connecting means of the embodiments of FIGS. l-3.
  • FIG. 13 shows a butt splice connector 78 which differs from the previous embodiment in that it does not have auxillary strain relief and guide fingers corresponding to the fingers 32, 32a.
  • the end pairs of fingers in this embodiment 82 are relatively smaller than the fingers 84, 86 so that the wires will be guided at the ends of the connectors as briefly explained.
  • FIG. 14 shows an embodiment of a butt splice connector having a single tongue 88 at each end and having two fingers on each sidewall associated with each tongue. Connecting devices of this type will be relatively shorter than the previously described embodiments and can be used under circumstances where two tongues and slots for each wire are not deemed to be essential.
  • FIG. 15 A connecting device as shown in FIG. 15 can be crimped unto a wire as previously described and can be provided with an insulating film.
  • a stamped and formed metallic connecting means for forming an electrical connection with a wire comprising:
  • said tongue having a free upper end, a wire-receiving slot extending partially downwardly into said tongue from said free end, and
  • each of said fingers having a proximate section with respect to said web and having an end section which is remote from said web, said proximate section of each finger extending divergently with respect to its respective side and said end section of each finger being joined to said proximate section by a reverse bend, each of said end sections extending generally downwardly towards said web, whereby,
  • Connecting means for forming an electrical and mechanical connection with an elongated conductor comprising:
  • a tongue struck from said web said tongue extending from said web in the same direction as said sidewalls and defining a plane which extends transversely of said web and transversely of said sidewalls, said tongue having afree end, a wire receiving slot extending centrally into said tongue from said free end towards said web,
  • each of said sidewalls having first and second integral fingers extending therefrom, corresponding fingers on said sidewalls being aligned with each other, said plane defined by said tongue being between said first and second fingers,
  • each of said fingers having a first section which is integral with, and extendsin the same general direction as, its respective sidewall, and each finger having a second section which is connected to said first section by a reverse bend and which extends inwardly and generally downwardly whereby,
  • Connecting means as set forth in claim 3 including a film of insulating material bonded to the external surface of said connecting means.
  • Connecting means as set forth in claim 4 including a second tongue struck from said web, said second tongue being spaced from said first tongue and extending generally parallel to said first tongue, and each of said sidewalls having a third finger extending therefrom, said first fingers being between said tongue and said second tongue, and said third fingers being on the opposite side of said second tongue from said first fingers.
  • said additional tongue having a slot therein which is relatively more narrow than the said slot in said tongue, said slot in said additional tongue having a width which is significantly less than the diameter of the conducting core of said wire.
  • Connecting means for forming an electrical connection with a wire comprising a stamped and formed member having:
  • each of said tongues having a wire-receiving slot extending inwardly from its free end
  • first, second, and third fingers extending from each of said sidewalls, said first fingers being between said tongues, said second and third extensions being on the opposite sides of said first fingers,
  • said fingers each comprising a proximate section which is integral with, and which extends in the same general direction'as, its respective sidewall and each finger further comprising an end section extending obliquely towards the opposite one of siad sidewalls, said end section being connected to said proximate section by a reverse bend,
  • said tongues having a height, relative to said web which is greater than the height of said sidewallsand the upper edges of said sidewalls being above the inner ends of said notches whereby,
  • each connecting means comprising a pair of tongues struck up from said web, said tongues being spaced apart along the length of said connecting device and defining planes which extend transversely of said web and transversely of said sidewalls, each of said tongues having a free end and having a wire-receiving slot extending inwardly from said free end, said slots being centrally located in said tongues and lying on the longitudinal axis of said connecting device, said tongues having a height relative to said web which is greater than the height of said sidwallls and the upper edges of said sidewalls being above the inner ends of said notches,
  • each connecting means further comprising first, second, and third finger-like extensions on each of said sidewalls, the first finger-like extension of each sidewall being between said tongues and having a width which is less than the spacing between said tongues, each said first finger-like extensions comprising a proximate section which is integral with, and extends in the same direction as, its respective sidewall, and an end section having a reverse bend and extending generally obliquely towards said web,
  • said second finger-like extension of each sidewall being on one side of said first extension and being proximate to the one of said tongues which is adjacent to an end of said connecting device, said third finger-like extension being on the other side of said first extension and being proximate to the one of said tongues which is remote from said one end of said connecting device,
  • said second and third finger on each sidewall having proximate and end sections which are at least similar to said proximate and end sections of said first extension whereby,
  • each of said wires can be connected to said connecting device by means of one of said connecting means by 10- cating said wire with its axis extending between said fingers and curling said fingers inwardly towards each other and towards said web, whereby said fingers will engage said wires and push said wires into said slots.
  • each of said connecting means having fourth finger-like extensions which are spaced from said second finger-like extensions and adjacent to an end of said connecting device, said fourth finger-like extensions serving to center said wires at the ends of said connecting device.
  • each of said connecting means having fourth finger-like extensions which are spaced from said third finger-like extensions and adjacent to an end of said connecting device, said fourth finger-like extensions having proximate and end sections, said proximate sections of said fourth finger-like extensions being relatively shorter than said proximate sections of said first,

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  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US00274931A 1972-07-25 1972-07-25 Conductor in-slot electrical connectors Expired - Lifetime US3767841A (en)

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US27493172A 1972-07-25 1972-07-25

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USB368387I5 (US06262066-20010717-C00315.png) * 1973-06-08 1975-01-28
US3924923A (en) * 1973-06-08 1975-12-09 Amp Inc Flat cable electrical connections and methods of making same
US3962901A (en) * 1973-09-20 1976-06-15 Amp Incorporated Electrical connector tap assembly apparatus
US3874764A (en) * 1973-10-31 1975-04-01 Amp Inc Lead assembly
JPS5155983A (US06262066-20010717-C00315.png) * 1974-09-13 1976-05-17 Itt
US3993391A (en) * 1975-09-19 1976-11-23 Itt Industries, Inc. Electrical contact for stripless cable connections
US4080157A (en) * 1976-06-14 1978-03-21 Albertson Quinton B Welding torch lighter
US4270828A (en) * 1979-10-22 1981-06-02 General Electric Company Improved capacitor lead clips
US4442316A (en) * 1980-11-15 1984-04-10 Minnesota Mining And Manufacturing Company Crimp connector for electrical wires
US4472596A (en) * 1982-07-30 1984-09-18 At&T Technologies, Inc. Electrical connector
FR2565421A1 (fr) * 1984-05-30 1985-12-06 Proner Sa Ets Perfectionnements aux futs a sertir pour contacts electriques
EP0165162A1 (fr) * 1984-05-30 1985-12-18 Etablissements PRONER Perfectionnements au fûts à sertir par contacts électriques
US4643507A (en) * 1985-04-25 1987-02-17 Amp Incorporated Electrical terminal with wire receiving slot
US5073126A (en) * 1986-11-07 1991-12-17 Amp Incorporated Electrical connector housing having conductor-retention means
US4948382A (en) * 1988-12-06 1990-08-14 Amp Incorporated Miniature insulation displacement electrical contact
US6402418B1 (en) 1996-07-26 2002-06-11 Metal Deploye S.A. Coupling for assembling cable tray unit sections and cable tray unit sections obtained
US6193434B1 (en) * 1996-07-26 2001-02-27 Metal Deploye S.A. Connecting splice for cable trough sections, and resulting cable trough sections
US5833488A (en) * 1996-12-19 1998-11-10 Ut Automotive Dearborn, Inc. Bladed wire connector and method for forming same
US6232555B1 (en) * 1998-03-19 2001-05-15 Framatome Connectors International Crimp connection
US20060166565A1 (en) * 2004-06-07 2006-07-27 Simpler Networks Inc. Collapsing bridge crimp
US7179116B2 (en) * 2004-06-07 2007-02-20 Simpler Networks Inc. Collapsing bridge crimp
US7377801B2 (en) * 2006-02-01 2008-05-27 Yazaki Corporation Shielded cable connecting structure
US20070178743A1 (en) * 2006-02-01 2007-08-02 Yazaki Corporation Shielded cable connecting structure
US7806583B2 (en) * 2006-02-17 2010-10-05 Fred Oswald Clamping mechanism
US20070195639A1 (en) * 2006-02-17 2007-08-23 Fred Oswald Clamping mechanism
US7775842B2 (en) * 2007-12-21 2010-08-17 Tyco Electronics Japan G. K. Crimping structure and crimping method
US20090163088A1 (en) * 2007-12-21 2009-06-25 Hidehisa Yamagami Crimping Structure and Crimping Method
US9004937B2 (en) * 2012-08-30 2015-04-14 Zierick Manufacturing Corporation Surface mount/through-hole crimp piercing zipcord connector
US20140073171A1 (en) * 2012-08-30 2014-03-13 Zierick Manufacturing Corporation Surface mount/through-hole crimp piercing zipcord connector
US10003136B2 (en) * 2013-03-19 2018-06-19 Yazaki Corporation Crimp terminal and crimping structure with respect to electrical wire thereof
US20170018858A1 (en) * 2013-03-19 2017-01-19 Yazaki Corporation Crimp terminal and crimping structure with respect to electrical wire thereof
US9318814B2 (en) * 2013-07-09 2016-04-19 Hitachi Metals, Ltd. Wire connection member, wire connection structure and annular power distribution member
US20150017845A1 (en) * 2013-07-09 2015-01-15 Hitachi Metals, Ltd. Wire connection member, wire connection structure and annular power distribution member
CN106921055A (zh) * 2015-11-30 2017-07-04 矢崎总业株式会社 端子金属配件的连接方法
US10096912B2 (en) * 2015-11-30 2018-10-09 Yazaki Corporation Connection method for terminal fitting and connection structure of terminal fitting
CN106921055B (zh) * 2015-11-30 2019-05-31 矢崎总业株式会社 端子金属配件的连接方法
US20180375225A1 (en) * 2017-06-26 2018-12-27 Yazaki Corporation Connection structure between electric wire and terminal, connection method between electric wire and terminal, and terminal
US10854998B2 (en) * 2017-06-26 2020-12-01 Yazaki Corporation Connection structure between electric wire and terminal, connection method between electric wire and terminal, and terminal

Also Published As

Publication number Publication date
YU36422B (en) 1983-06-30
BG28859A3 (en) 1980-07-15
FI58413B (fi) 1980-09-30
ES204180Y (es) 1976-05-01
RO72372A (ro) 1983-02-01
HK21579A (en) 1979-04-06
NO132011C (US06262066-20010717-C00315.png) 1975-09-03
DE2336413A1 (de) 1974-04-11
AU5750573A (en) 1975-01-09
CH584463A5 (US06262066-20010717-C00315.png) 1977-01-31
NL151222B (nl) 1976-10-15
SE379609B (US06262066-20010717-C00315.png) 1975-10-13
FI58413C (fi) 1981-01-12
DE2336413B2 (de) 1975-10-02
LU68030A1 (US06262066-20010717-C00315.png) 1973-09-17
PH10715A (en) 1977-08-25
ES417235A1 (es) 1976-02-16
ES204180U (es) 1976-01-16
JPS4945386A (US06262066-20010717-C00315.png) 1974-04-30
ZA734554B (en) 1974-06-26
IT1003099B (it) 1976-06-10
YU198073A (en) 1981-11-13
NL7310121A (US06262066-20010717-C00315.png) 1974-01-29
DK149291C (da) 1986-11-03
GB1391158A (en) 1975-04-16
IL42630A (en) 1975-07-28
FR2197254A1 (US06262066-20010717-C00315.png) 1974-03-22
DD108413A5 (US06262066-20010717-C00315.png) 1974-09-12
CS167394B2 (US06262066-20010717-C00315.png) 1976-04-29
NO132011B (US06262066-20010717-C00315.png) 1975-05-26
FR2197254B1 (US06262066-20010717-C00315.png) 1979-03-16
BE802415A (fr) 1974-01-16
HU169016B (US06262066-20010717-C00315.png) 1976-09-28
RO72372B (ro) 1983-01-30
ATA632273A (de) 1977-03-15
CA990377A (en) 1976-06-01
IE39062B1 (en) 1978-08-02
JPS5632751B2 (US06262066-20010717-C00315.png) 1981-07-29
TR17969A (tr) 1976-08-10
DK149291B (da) 1986-04-21
IE39062L (en) 1974-01-25
SU542486A3 (ru) 1977-01-05
AU473937B2 (en) 1976-07-08
AR196021A1 (es) 1973-11-23
IL42630A0 (en) 1973-08-29
BR7305577D0 (pt) 1974-08-22
PL97787B1 (pl) 1978-03-30
AT339981B (de) 1977-11-25

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