US3868611A - Magnetically actuated sealed contact - Google Patents

Magnetically actuated sealed contact Download PDF

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Publication number
US3868611A
US3868611A US417984A US41798473A US3868611A US 3868611 A US3868611 A US 3868611A US 417984 A US417984 A US 417984A US 41798473 A US41798473 A US 41798473A US 3868611 A US3868611 A US 3868611A
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US
United States
Prior art keywords
contact
cover
contacts
armature
stack
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
US417984A
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English (en)
Inventor
Wolfgang Mecklenburg
Alfred Leicht
Walter Hoffmann
Hans Dieter Pfeil
Ingo Rudiger Isert
Helmut Buttel
Richard Braunschweig
Philip John Smith
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.)
Alcatel Lucent NV
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International Standard Electric Corp
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.)
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Publication date
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
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Publication of US3868611A publication Critical patent/US3868611A/en
Assigned to ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS reassignment ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H01H51/281—Mounting of the relay; Encapsulating; Details of connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H01H51/284—Polarised relays

Definitions

  • ABSTRACT A sealed contact for use in electromechanical relays has a fiat base plate consisting of an annular outer member and a disc-shaped inner member joined together by means of a glass seal. A hood-shaped cover containing an armature, holdingspring and attached armature is sealed to the outer member of the base. The uniformly flat base and cover allow the contact to be used in a wide variety of electromechanical relays.
  • the present invention relates generally to sealed contacts capable of being magnetically actuated.
  • One such contact currently in use has a cover which includes an armature and an armature holding spring.
  • the cover is sealed to a base plate having a pin connected thereto usually by means of a glass ring type seal.
  • a pair of electrical contacts is provided, one on the armature, and one at the end of the pin internal to the contact.
  • the pin mainly extends perpendicular from the base plate and serves as the magnetizing core for an electromagnet.
  • a magnetizing coil wound around the pin exterior to the contact serves to provide energizing current to the electromagnet assembly.
  • An object of the invention is to provide an improved sealed contact capable of magnetic actuation.
  • a base plate consisting of a ringshaped outer part and a disc-shaped inner part which are joined together by means of a glass ring, and an armature arranged opposite a section of the inner part as well as opposite a section of the outer part.
  • the glass-to-metal seal can be established in a very inexpensive way, for example by simply placing the outer part, the glass ring and the inner part on aplane plate of graphite. In so doing there is not required any additional positioning with the aid of holding parts. Subsequently to the sealing process, both the inner part and the outer part are in one plane at least on one side of the base plate.
  • the inner part is made from a magnetically conductive material.
  • both the outer part and the cover are made from a nonmagnetic material.
  • the outer part may be made from a non-magnetic material while the cover is made from a magnetically conductive material.
  • both the outer part and the cover are made from a magnetically conductive material.
  • the outer part is made from a magnetically conductive material while the cover is made from a non-magnetic material.
  • FIG. 1 shows a top view of a sealed contact with a flat housing
  • FIG. 2 shows a side cross sectional view of the contact shown in FIG. 1;
  • FIG. 3 shows a bottom view of the contact shown in FIG. 1;
  • FIG. 4 shows a cross sectional side view of one embodiment of a spring armature arrangement when the contact is actuated
  • FIG. 5 shows a cross sectional side view of another spring armature arrangement when the contact is actuated
  • FIG. 6 shows a cross sectional side view of a further embodiment of an armature spring arrangement when the contact is actuated
  • FIG. 7 shows a cross sectional view of another embodiment of a spring contact arrangement when the contact is actuated
  • FIG. 8 shows a cross sectional side view of an electromagnetic relay with several sealed contacts in a stacked arrangement
  • FIG. 9 shows a cross sectional side view of an electromagnetic relay with two sealed contacts arranged next to each other;
  • FIG. 10 shows a cross sectional side view of an electromagnetic relay with two contacts facing one another
  • FIG. 11 shows a top cross sectional view of the relay of FIG. 10
  • FIG. 12 shows a side view of the relay shown in FIGS. 10 and II;
  • FIG. 13 shows a side view of the relay shown in FIG. 12 partially in cross section
  • FIGS. l4, l5 and 16 show different magnetically conducting stamped sheet-metal parts for use in the relays according to FIGS. 12 and 13, in a three-dimensional representation;
  • FIG. 17 shows a cross sectional side view of an electromagnetic locking relay with two contacts facing one another.
  • FIG. 18 shows a cross sectional side view of the locking relay shown in FIG. 17.
  • FIGS. 1-3 there is illustrated a sealed contact, the housing of which consists of a plane base plate and a hood-shaped cover 1.
  • the rim portion of the cover 1 is firmly joined to the base plate either in a dust-proof manner or hermetically sealed. Sealing can be established, for example, by means of an annular sealing weld (welded joint).
  • the base plate of the contact consists of a ring-shaped outer part 2 and a disc-shaped inner part 3 which, with the aid of a glass ring 4. and by employing the known glass-to-metal sealing method, are in such a way joined together as to be lying in one plane at least on the inside of the base plate.
  • the inner part 3 is arranged eccentrically within the outer part 2.
  • An armature designed as a flat component is fastened to the inside of the cover 1 by means of an armature holding spring 6, and is thus arranged opposite a section of the inner part 3 as well as opposite a section of the outer part 2.
  • the surface of the armature S cooperating with the inner part 3 may have a bulged or spherical design.
  • the flat, disc-shaped contact described with reference to FIGS. l-3 can be used in a diversified manner in neutral, various bistable, or rest contact relays. These relays all require a different mode of operation of the armature 5 which, depending on the design of the magnetic circuit of the relay, must be arranged either slopingly or parallel in relation to the base plate when in the actuated state.
  • the different mode'of operation of the contact can also be achieved by suitably se-' lecting the'material for the outer part 2 and the cover 1.
  • a sloping armature position will be achieved, for example, in cases where the outer part 2 is made from a non-magnetic material; in this case the cover 1 may be either magnetic or non-magnetic (FIGS. 4 and 5).
  • a parallel armature position will result whenever the outer part2 is made from amagnetic material; in this case the cover 1 may either be magnetic or nonmagnetic (FIGS. 6 and7). In all of these cases, however, the inner part3 is made from a magnetically conductive material.
  • FIGS. 4-7 Four corresponding examples of embodiment are shown in FIGS. 4-7.
  • FIGS. 4 and 5 each show a contact employing a non-magnetic outer part 2, with the armature 5, in its actuated condition, being in a sloping position in relation to the base plate.
  • the fastening point 7 for the armature holding spring 6 at the cover 1 is positioned over the outer part 2.
  • the cover 1 is shown to be turned by 180, so that the fastening point 7 of the armature holding spring 6 at the cover 1 is positioned over the inner part 3.
  • FIGS. 6 and 7 each show a contact with a magnetic outer part 2, so that the armature 5., in' its actuated state, is positioned in parallel with the base plate.
  • FIGS. 6 and 7 there are shown various arrangements of the fastening points 7 of the armatureholding spring 6 at the cover 1, above the outer part 2 (FIG. 6),.and above the inner part3 (FIG. 7);
  • FIG. 8 shows a neutral electromagnetic relay with three stacked sealedcontacts 8, 9 and 10, which are all capable of being actuated by means of an electromagone pole of the electromagnet 11 is coupled to th inner part 3 of the lowest'contact 8 in the stack via a flux guide member 12 while the other pole thereof, via a flux guide member 13, is magnetically connected to the cover 1 of the top contact 10 in the stack.
  • the outer parts 2 of the contacts 8, 9, 10 are made from a nonmagnetic material while the covers 1 are preferably made from a magnetically conductive material.
  • the inner parts 3 are each provided with a soldering terminal 15, with the aid of which there are established the electrical connections to the individual contacts 8, 9, l0.
  • FIG. 9 shows a further neutral electromagnetic relay with two juxtaposed contacts l6, l7 capable of being actuated by an electromagnet l8 lying therebetween.
  • the one pole of the electromagnet 18 is coupled via flux guide members 19 to the inner parts 3 of the contacts 16 and 17 whereas the other pole thereof, via flux guide members 20, is magnetically connected to the covers 1 ,of the contacts 16 and 17.
  • the outer parts 2 of the contacts 16, 17 are made from a non-magnetic material.
  • the covers 1 may be either of a magnetically conductive or non-magnetic material.
  • the inner parts 3 are each provided with soldering terminals 14, and the covers 1 are each provided with soldering terminals 15 for leading out the electrical connections radially in relation to the contacts 16 and 17.
  • neutral electromagnetic relays will be obtained when combining stacked and juxtaposed contacts with one another for being actuated by one common electromagnet.
  • FIGS. 10 and 11 show an electromagnetic relay comprising two sealed contacts 21, 22 with the base plates thereof facing one another. Between the two base plates of the contacts 21, 22 there is arranged one permanent magnet 23 and one electromagnet24 which are magnetically in series via the contacts 21, 22.
  • the electromagnet consists of a magnetically conductive pin 24 and of a magnetizing winding 25 and is'applied to the oppositely arranged inner parts 3 of the contacts 21, 22.
  • the permanent magnet 23 is respectively coupled with one of its poles, next to the electromagnet, to the oppositely arranged surfaces of the outer parts 2 The distance between the oppositely arrangedbase.
  • the shunt area is indicated by the reference numeral 27.
  • the same relay construction as shown in FIG. 10 can be used to obtain various types of relays.
  • the permanent magnet 23 produces in the magnet circuit of the relay a pre-excitation, the amount of which being dependent upon the dimensions of the magnet and the magnetizing force, as well as uponthe magnetic circuit of the relay. In cases where the pre-excitation is smaller than the drop-out or release excitation, there will be obtained a neutral relay with reduced pick-up and drop-out values. In cases where the pre-excitation is greater thanthe hold value, the relay is of the bistable type. If finally the pre-excitation by the permanent magnet 23 exceeds the pick-up excitation of the neutral relay, there will be obtained a relay with rest contacts.
  • These three types of relays can be realized by correspondingly decreasing the magnetism of a sufficiently tion to the plane of thebase plates closely next to each other and aresurrounded by a common magnetizing coil or winding 32.
  • the stampedmetal parts 30, 31 are each provided with an extension serving as a soldering lug 33 or 34, for leading out one of the electrical terminals radially in relation to the contacts 28 or 29 respectively.
  • the other electrical connection of the contacts 28, 29, as described hereinbefore, is established by means of a soldering terminal as attached to the cover 1.
  • FIGS. 14, 15 and 16 show different types of magnetically conductive stamped metal parts 35, 36 and 37 with soldering lugs or terminals 38,39 and 40, suitable for being used in the relays shown in FIGS. 12 and 13.
  • the angled-off ends at which the stamped metal-parts 35, 36, 37 are welded to the inner parts 3, are indicated by the reference numerals 41, 42 and 43 respectively.
  • the outer parts 2 are made from a magnetically conductive material
  • the covers 1 are madeifrom a non-magnetic material.
  • the covers 1, however, can be made equally well from a magnetic material.
  • FIG. 17 shows an electromagnetic locking relay with two sealed contacts 44 and 45 of which the covers 1 are arranged to face one another. Between the two covers 1 of the contacts 44 and 45 there is arranged a permanent magnet23 and an electromagnet.
  • the electromagnet consists of a magnetically conductive pin 24 and of a magnetizing coil (winding) 25. The pin 24 is applied almost coaxially with the inner parts 3 to the oppositely arranged covers 1. Located next to the electromagnet,
  • the permanent magnet 23 is magnetically coupled by means of its poles to the covers 1.
  • the inner parts 3 of the two contacts 44 and 45 are magnetically connected to one another by means of a flux guide member 46 surrounding the two contacts 44, 45 in a U-shaped manner.
  • the outer parts 2 as well as the covers 1 are made from a non-magnetic material.
  • the magnetic flux of the closed contacts 44, 45 extends from the inner part 3 to the armature 5 and leaves the contact 44 or 45 at the end of the armature holding spring 6 through the non-magnetic cover 1.
  • the percussive strength is achieved in this case not by the initial tension but by the magnetic bias, this will become clearly evident from the following explanation of the magnetic flux path in the open contact.
  • the majority of the flux of the permanent magnet 23 extends via the shunt, i.e., via the armature 5 and the magnetically conductive pin 24.
  • FIG. 18 shows a further type of magnetic locking relay comprising two sealed contacts 47 and 48 with the covers 1 thereof facing one another. Between the two covers 1 there is arranged a permanent magnet 23 as well as a magnetically conductive pin 24. This pin 24 is applied almost coaxially with the innerparts 3.to the covers 1 facing one another. Next to thepin 24, the permanent magnet 23 is magnetically coupled by means of its poles to the cover 1.
  • the inner parts 3 are magnetically connected to one another by means of a flux guide member 49 consists of two parallel extending legs 50, 51 on which there is each time arranged one coil 52 or 53 for being controlled by various coordinates X or Y of a cross point matrix respectively.
  • the outer parts 2 and the covers 1 of the two contacts 47 and 48 are made from a non-magnetic material. 7
  • the magnetic locking relay according to FIG. 18 is actuated as follows: In the open state of the contacts 47, 48 the majority of the flux of the permanent magnet 23 extends via the armatures 5 and the magnetically conductive pin 24 between the two covers 1. If both of the coils 52 and 53 are subjected to a short-duration excitation in the same sense and produce a magnetic flux in series with the permanent magnet 23, then the flux via the armatures 5 towards the inner parts 3 is intensifiedthus causing the contacts 47 and 48 to close. If only one of the coils e.g., 52 is excited then the magnetic flux as produced thereby is shorted via the other leg 51. The contacts 47 and 48 are only actuated upon simultaneous excitation of both the coils 52 and 53. Accordingly, the relay will only operate when being controlled simultaneously via the two coordinates X and Y-of eg, a cross point matrix. The flux of the permanent magnet 23 causes the armatures 5 to be retained in both positions.
  • the two oppositely arranged contacts are insulated from one another by means of a foil or a suitable plastic coating.
  • An electromagnetic relay including contacts of the type with a base plate having outer and inner parts joined together by means of a glass ring, a hood-shaped cover sealedto the outer part of the base plate, an armature holding spring mounted to the inner surface of the cover, and an armature attached to the spring in a position opposite the inner member for making contact therewith, comprising:
  • An electromagnetic relay including contacts of the type including a base plate having outer and inner parts joined together by means of a glass ring, a hood-shaped cover sealed to the outer part of the base plate, an armature holding spring mounted to the inner surface of the cover, and an armature attached to the spring in a position opposite the inner member for making contact therewith, comprising:
  • a sealed contact capable of magnetic actuation comprising:
  • a base plate having a flat disc-shaped nonmagnetically conductive outer part and a flat discshaped magnetically conductive inner part, said inner and outer parts being arranged eccentrically within the same geometric plane and sealed to each other by means of a glass ring;
  • conductive cover having a flange-like projection for scaling to said outer part by means of an annular weld
  • an armature attached to said spring opposite said inner part, said armature having a spherical configuration on one surface thereof for providing electrical contact with said inner part, whereby a plurality of said contacts are capable of being ar ranged in a stack such that the base plate of each contact in the stack is opposite the cover of the next lowest contact therewithin said stack.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Contacts (AREA)
  • Dc Machiner (AREA)
  • Motor Or Generator Frames (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Magnetic Treatment Devices (AREA)
US417984A 1972-12-01 1973-11-21 Magnetically actuated sealed contact Expired - Lifetime US3868611A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2258922A DE2258922C3 (de) 1972-12-01 1972-12-01 Magnetisch betätigbarer, abgeschlossener Kontakt mit einem flachen Gehäuse

Publications (1)

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US3868611A true US3868611A (en) 1975-02-25

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US417984A Expired - Lifetime US3868611A (en) 1972-12-01 1973-11-21 Magnetically actuated sealed contact

Country Status (23)

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US (1) US3868611A (de)
JP (1) JPS4986847A (de)
AR (1) AR200292A1 (de)
AT (1) AT339421B (de)
BE (1) BE808020A (de)
BR (1) BR7309398D0 (de)
CA (1) CA993931A (de)
CH (1) CH582948A5 (de)
CS (1) CS177155B2 (de)
DD (1) DD109285A5 (de)
DE (1) DE2258922C3 (de)
EG (1) EG11096A (de)
ES (1) ES421056A1 (de)
FR (1) FR2209192B1 (de)
GB (1) GB1439788A (de)
IL (1) IL43697A (de)
IN (1) IN138674B (de)
IT (1) IT1002045B (de)
NL (1) NL7316332A (de)
NO (2) NO138971C (de)
SE (1) SE397430B (de)
SU (2) SU567420A3 (de)
TR (1) TR18081A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097123A2 (de) * 1982-06-10 1983-12-28 Standard Telephon Und Radio Ag Elektromagnetisches Miniaturrelais

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
JPS5147309A (ja) * 1974-10-21 1976-04-22 Nippon Telegraph & Telephone Denjizahyosentakusochi
JPS5169158A (ja) * 1974-12-11 1976-06-15 Nippon Telegraph & Telephone Keidenkigumi
JPS5235856A (en) * 1975-09-16 1977-03-18 Nippon Telegraph & Telephone Sealed relay box
SE9202320L (sv) * 1992-08-10 1994-02-11 Sivers Ima Ab Omkopplingsanordning
DE102010017872B4 (de) * 2010-04-21 2012-06-06 Saia-Burgess Dresden Gmbh Bistabiles Kleinrelais großer Leistung
CN117747359B (zh) * 2024-02-21 2024-04-16 新乡市裕诚电气有限公司 一种永磁开关的手动合闸机构及其操作方法

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US3020369A (en) * 1959-04-27 1962-02-06 Bell Telephone Labor Inc Circuit controller
US3061696A (en) * 1958-10-29 1962-10-30 Bell Telephone Labor Inc Switching device
US3150244A (en) * 1961-03-29 1964-09-22 Siemens Ag Electromagnetic relay
US3458839A (en) * 1966-03-26 1969-07-29 Philips Corp Locking reed and ball switches and matrices
US3711798A (en) * 1969-02-26 1973-01-16 Amf Inc Flat pack reed relays

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FR1318377A (fr) * 1961-03-29 1963-02-15 Siemens Ag Relais électromagnétique
DE1191042B (de) 1961-03-29 1965-04-15 Siemens Ag Elektromagnetisches Relais
NL276520A (de) 1961-03-29
DE1279840B (de) 1961-03-29 1968-10-10 Siemens Ag Elektromagnetisches Relais
DE1194980B (de) 1963-04-22 1965-06-16 Siemens Ag Elektromagnetisches Relais fuer polarisierten Betrieb
GB1119126A (en) * 1963-05-13 1968-07-10 Standard Telephones Cables Ltd Improvements in or relating to sealed contact devices
JPS3930951Y1 (de) * 1964-01-20 1964-10-20
DE1249998C2 (de) 1964-09-09 1975-01-09 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches relais
DE1918791U (de) 1964-09-28 1965-07-01 Siemens Ag Elektromagnetisches relais.
DE1918790U (de) 1964-09-28 1965-07-01 Siemens Ag Elektromagnetisches relais.
DE1927297U (de) 1965-03-30 1965-11-18 Siemens Ag Elektromagnetisches relais.
DE1921087U (de) 1965-04-02 1965-08-12 Bbc Brown Boveri & Cie Verklinkungsvorrichtung fuer ausloeseorgane in selbstschaltern.
DE1954951U (de) 1966-09-14 1967-02-09 Otto Hofmann Kreuzverbundstein.
DE1986609U (de) 1967-09-29 1968-06-06 Siemens Ag Haftrelais.
DE6928980U (de) 1969-07-22 1969-12-04 Siemens Ag Schalteinrichtung.
DE6929174U (de) 1969-07-23 1969-12-04 Siemens Ag Schalteinrichtung.
BE756309R (fr) * 1969-09-18 1971-03-18 Int Standard Electric Corp Elektromagnetisch bediend relais
CH519239A (de) * 1970-01-29 1972-02-15 Siemens Ag Bistabiles elektromagnetisches Relais
DE2025768C3 (de) 1970-05-26 1976-01-08 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren zur Kontrolle des Kontaktabstandes eines zumindest teilweise lichtdurchlässig gekapselten Schutzgaskontaktes
DE2036850C3 (de) 1970-07-24 1981-11-12 Siemens AG, 1000 Berlin und 8000 München Magnetisch betätigbarer Schaltkontakt
BE778650A (fr) * 1971-01-29 1972-07-28 Siemens Ag Commutateur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3061696A (en) * 1958-10-29 1962-10-30 Bell Telephone Labor Inc Switching device
US3020369A (en) * 1959-04-27 1962-02-06 Bell Telephone Labor Inc Circuit controller
US3150244A (en) * 1961-03-29 1964-09-22 Siemens Ag Electromagnetic relay
US3458839A (en) * 1966-03-26 1969-07-29 Philips Corp Locking reed and ball switches and matrices
US3711798A (en) * 1969-02-26 1973-01-16 Amf Inc Flat pack reed relays

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097123A2 (de) * 1982-06-10 1983-12-28 Standard Telephon Und Radio Ag Elektromagnetisches Miniaturrelais
EP0097123A3 (de) * 1982-06-10 1986-10-01 Standard Telephon Und Radio Ag Elektromagnetisches Miniaturrelais

Also Published As

Publication number Publication date
FR2209192A1 (de) 1974-06-28
DE2258922A1 (de) 1974-06-20
IT1002045B (it) 1976-05-20
DD109285A5 (de) 1974-10-20
IN138674B (de) 1976-03-13
FR2209192B1 (de) 1977-06-17
NO138971B (no) 1978-09-04
DE2258922B2 (de) 1974-09-12
SU597353A3 (ru) 1978-03-05
BE808020A (nl) 1974-05-30
EG11096A (en) 1977-03-31
SU567420A3 (ru) 1977-07-30
IL43697A (en) 1976-05-31
DE2258922C3 (de) 1980-03-06
ATA938273A (de) 1977-02-15
NO138971C (no) 1978-12-13
BR7309398D0 (pt) 1974-08-29
AU6292773A (en) 1975-05-29
CA993931A (en) 1976-07-27
NL7316332A (de) 1974-06-05
JPS4986847A (de) 1974-08-20
GB1439788A (en) 1976-06-16
CS177155B2 (de) 1977-07-29
CH582948A5 (de) 1976-12-15
AT339421B (de) 1977-10-25
NO781244L (no) 1974-06-05
AR200292A1 (es) 1974-10-31
IL43697A0 (en) 1974-03-14
SE397430B (sv) 1977-10-31
ES421056A1 (es) 1976-04-16
TR18081A (tr) 1976-09-30

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AS Assignment

Owner name: ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE;REEL/FRAME:004718/0023

Effective date: 19870311