US2977438A - Relay-contactor - Google Patents

Relay-contactor Download PDF

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Publication number
US2977438A
US2977438A US823653A US82365359A US2977438A US 2977438 A US2977438 A US 2977438A US 823653 A US823653 A US 823653A US 82365359 A US82365359 A US 82365359A US 2977438 A US2977438 A US 2977438A
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US
United States
Prior art keywords
coil
contacts
relay
contactor
case
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
US823653A
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English (en)
Inventor
Morschel Franz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US823653A priority Critical patent/US2977438A/en
Priority to DEM33649U priority patent/DE1825204U/de
Priority to DEM43661A priority patent/DE1133791B/de
Priority to DEM51450A priority patent/DE1237204B/de
Priority to GB10337/60A priority patent/GB900812A/en
Priority to FR823378A priority patent/FR1279242A/fr
Priority to BE589741A priority patent/BE589741A/fr
Application granted granted Critical
Publication of US2977438A publication Critical patent/US2977438A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
    • H01H50/305—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature damping vibration due to functional movement of armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
    • H01H50/22—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil wherein the magnetic circuit is substantially closed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices
    • H01H50/545—Self-contained, easily replaceable microswitches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/20—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil
    • H01H50/22—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil wherein the magnetic circuit is substantially closed
    • H01H2050/225—Movable parts of magnetic circuits, e.g. armature movable inside coil and substantially lengthwise with respect to axis thereof; movable coaxially with respect to coil wherein the magnetic circuit is substantially closed with yoke and armature formed by identical stacked laminates, e.g. punched in one and the same tool

Definitions

  • the present invention relates to relay-contactors, the term being herein used in a generic sense to include circuit breakers, switches and other instrumentalities for opening and closing electrical circuits.
  • Another object of the invention is to provide a relaycontactor which is assembled without screws, rivets or similar fastening means except for means securing the cover on a case which houses operating mechanism of the relay-contactor.
  • the virtual elimination of fastening means such as screws and rivets not only facilitates manufacture and assembly of the device but also contributes to providing years of trouble-free service by avoiding failures'attributable to the failure or loosening of such fastening means.
  • a further object of the invention is to avoid such deleterious effects and thereby greatly increase the useful life of the relay-contactor.
  • a relaycontactor in accordance with the invention will operate satisfactorily as many as 50 million times.
  • Fig. 1 is a front view of a relay-contactor in accordance with the invention.
  • Fig. 2 is an enlarged vertical section taken approximately on the line 2-2 in Fig. 1.
  • Fig. 3 is a horizontal section taken approximately on the line 3-3 in Fig. 1.
  • Fig. 4 is a perspective viewof an auxiliary contact unit.
  • Fig. 5 is a vertical section corresponding approximately to Fig. 2 but showing modifications.
  • Fig. 6 is a view taken approximately on the line 66 in Fig. 5 with the cover removed from the case of the device.
  • the relay-contactor shown by way of example in Figs. 1 to 4 of the drawings has a.case 1 which is conveniently molded of plastic material which is strong, durable and dimensionally stable.
  • the case may be molded of a phenolic resin material.
  • the case 1 is 2,977,438 Patented Mar. 28, 1961 ice shown .as comprising a base portion 2 and four sides,
  • the case is provided with apertured lugs 7 to receive bolts, screws or other suitable fastening means for securing the relay-contactor on a vertical panel or other support with the base 2 disposed substantially in a vertical plane.
  • the case 1 is provided with a cover 10 which fits onto the case and is suitably secured in place.
  • the cover is held by diagonally opposite screws 11 extending through holes on the cover and screwed into lugs 12 provided on opposite sides 3 and 5 of the case.
  • the lugs 12 have threaded holes to receive the screws 11.
  • the cover is likewise preferably molded of plastic material and panel portion 13 and a plurality of partitions that project outwardly from the panel to form a plurality of separate cells.
  • the partitions comprise spaced parallel partitions 14 which are disposed equidistantly from a plane bisecting the cover and five vertical partitions 15 which intersect the horizontal partitions 14 to form separate cells 16. While the cover is shown in the drawing as having four such cells, it will be understood that more of fewer may be provided according to the number of contacts the relaycontactor is desired to have.
  • a plurality of stationary contacts are mounted on the panel portion 13 inside the cells 16 defined by the partitions 14 and 15.
  • a pair of spaced stationary contacts 17 is provided in each cell.
  • Each of the contacts comprises a strip or bar which is slipped through a slit at the base of the partition 14 and rests on the panel portion 13.
  • a small projection or flange 18 on the panel 13 limits the distance the contact strip 17 can he slipped in.
  • the dimensions of the parts are such that the contact strip 17 slips into place with a tight frictional fit so that it is held securely in place by friction.
  • the strip 17 is provided with a threaded hole to receive a screw 19 for securing a lead wire or other conductor to the contact strip.
  • the cover is provided with holes 20 to receive the inner end portions of the screws 19.
  • the holes 20 are not threaded as the screws 19 are for attaching conductors to the contact strips and not for mounting the contact strips on the cover.
  • the contact strips are held in place by a tight frictional fit in the slots provided for them. How ever, when the screws '19 are in place, they hold the contact strips 17 from being pulled out of their respective slots, for example by a pull on the conductor, and hence provide double security.
  • the vertical partitions 15 are preferably extended as indicated at 21 to provide separators isolating the outer ends of the contact bar 17 from one another and thereby avoiding any accidental short circuit between wires connected to the respective stationary contacts.
  • each of the movable contact members 22 comprises a bar having contact areas provided at its opposite ends and adapted to move between a closed position in which opposite end portions of the movable contact bar engage the two stationary contacts of a pair disposed in a cell 16 and an open position in which the stationary and movable contacts are disengaged from one another.
  • actuating member 23 which is conveniently molded of plastic material for example a phenolic resin.
  • the actuating member is shown as comprising a base portion 24 disposed inside the case 1 and a plurality of posts 25 extending out through openings in the cover into the cells 16, there being a post for each cell.
  • each of the posts 25 is provided with diametrically opposite projecting portions which fit into an elongated opening in the central portion of the respective contact bar 22.
  • the contact bar is resiliently held in place by a key 26 which locks into the post 25 by being inserted through a slot and given a 90 turn and a compression spring 27 which acts between the key 26 and the bar 22.
  • the actuating member 23 is movable in a direction perpendicular to the cover by an electromagnet 30 housed in the case 1,
  • the electromagnet comprises a coil or winding 31 and two core sections 32 and 33.
  • the coil 31 is wound on a coil form 34 which is conveniently molded of plastic material.
  • the coil form 34 is shown provided with an integral terminal board portion 35 carrying two terminals 36 for connecting the coil 31 to an energizing circuit.
  • the assembly comprising the coil form 34 and coil 31 slips freely but snugly into the case 1, with the terminal board portion 35 fitting into a recess provided at the forward portion of the bottom of the case.
  • the terminals 36 thus project downwardly from the case.
  • the two core sections 32 and 33 are alike, each consisting of a plurality of laminae of magnetically permeable material.
  • each of the core sections is E-shaped with a central portion 37 received inside the coil 31 and opposite side portions 38 which together provide a magnetic circuit surrounding the coil.
  • the core sections are movable from a position in which they are separated from one another as shown in Figs. 2 and 3 to a position in which they are in engagement with one another.
  • the front core section 3-3 is interlocked with the actuating member 23- by means of undercut portions 39 engaging complemental portions of the actuating member.
  • the front core section and actuating member are thus dovetailed into one another and held without screws, rivets or similar fastening means.
  • Resilient means shown as oppositely disposed compression springs 49 act between the coil form 34 and the actuating member 33 to move the actuating member forwardly and thus separate the magnet core sections as shown in the drawings.
  • the coil 31 When the coil 31 is energized by current supplied through the terminals 36, the coil sections 32 and 33 are attracted toward one another and the front coil section 33 and actuating member 23 are thereby drawn inwardly to bring the movable contacts 22 into engagement with the stationary contacts 17.
  • the rear core section 32 rests against a block of foam or sponge material 41 positioned between internal flanges 42 on the base of the casing and held in position by adhesive or otherwise.
  • the material 41 is foam rubber or other elastomer material having the properties of being relatively soft and compressible with sufficient elasticity to return to its original form when pressure is released.
  • the block 4-1 is of sufficient thickness to be compressed a substantial amount between the rear core section 32 and the base of the case when the magnet is in position in the case and retained by the cover 10.
  • the parts of the relay-contactor in accordance with the invention are readily assembled without the use of any screws, bolts or other connecting means except for the screws 11 which secure the cover to the case 1.
  • the stationary contacts 17 are assembled on the cover 10 merely by pushing them lengthwise into position.
  • the front core section 33 and the actuating member 23 are assembled by slipping the actuating member in between the undercut dovetail portions 39 of the core section.
  • the posts of the actuating member are slipped up through the corresponding holes in the cover and the movable contacts with their associated springs 27 are secured in place by the keys 26 which are inserted through slots provided in the ends of the posts 25 and then turned to lock them in place by a bayonet-type joint.
  • the rear core section 32 is slipped onto the coil assembly and the coil is slipped into the case 1.
  • the cover 10 is then put on carrying with it the front core section which fits down over and into the coil.
  • the cover is secured in place by the two screws if to complete the assembly operation.
  • the springs 40 hold the actuating member 23- in a forward position in which the movable and stationary contacts are separated as illustrated in Fig. 2.
  • the two core sections are attracted toward one another.
  • the rear core section 32 is restrained from forward movement by the coil form 34 which in turn is held by the cover 10
  • the front core section 33 is drawn rearwardly, thereby bringing the movable contacts into engagement with the stationary contacts 22.
  • the foam block 41 cushions any impact resulting from engagement of the forward core section 33 with the rear section 32.
  • the entire coil assembly comprising the coil form 43 and coil 31 can move a limited distance rearwardly, such movement being likewise cushioned bythe foam block 41.
  • each auxiliary contact unit 50 comprises a body portion 51 which is conveniently molded of plastic insulating material.
  • the body portion 51 is provided with four resilient finger portions 52 which fit snugly into the four corners respectively of one of the cells 16.
  • a fifth finger 53 is provided at its end with a detent portion 54 adapted to engage a recess or other cooperating shoulder 55 to retain the auxiliary contact unit in the position shown in Figs. 2 and 3 by a releasable spring-catch action.
  • the auxiliary contact unit 50 is shown provided with a stationary contact 56 carried by a U-shaped metal clip 57 provided at its outer end with a terminal screw 62.
  • the spring arm 60 is in position to be engaged by a key 26 of the actuating member 23 so that when the actuating member is in its forward position the movable contact 59 is held in engagement with the stationary contact 56.
  • the key portion 26 is made of fiber or other insulating material or is provided with an insulating cap on its upper end.
  • a slidable plunger 63 extending out through a bore in the body portion 51 is operablemanual-ly to actuate the movable contact.
  • the contacts are normally closed and are opened by the plunger 63. It will thus be understood that the contacts may be normally open or normally closed as desired. It will further be understood that an auxiliary contact unit such as unit 50 may be inserted in any one or more of the cells 16 onthe cover 10 to increase the number of available contacts of the relay as desired. 7
  • Figs. 5 and 6 where corresponding parts are designated by the same reference numerals as in Figs. 1 to 4.
  • the relay-contactor is shown in mounted position on a vertical panel or other support 65 where it is held by screws 66.
  • the resilient means for separating the core sections of the magnet comprise blocks 40a of resilient foam material which seat in sockets 67 on the coil form 34 and bear against an inner face of the actuating member 23.
  • the foam material comprising the blocks 40a may be identical with or similar to the foam material of the block 41 disposed between the rear magnet core section and the base of the case.
  • the foam material has a long life and is not subject to crystallization or fatigue failure as is a metal spring.
  • Fig. 5 the cover is shown held inplace on the case by spring clips 11a which fit over complemental lug portions of the cover and case.
  • the clips are held securely in place by small detents 68 which snap into corresponding holes or recesses provided in the complemental lug portions of the case and cover.
  • the spring clips 11a permit more rapid and economical assembly and are also preferable to screws or bolts in that they cannot work loose.
  • auxiliary contact unit 50a which is similar to the unit 50 shown in Figs. 1 to 4 except that the stationary contact 56a carried by the clip 57a and the movable contact 59a carried by the spring 60a are normally closed and are separated from one another as shown in Fig. 5 by the key 26 of the actuating member 23 when the latter is in its outer position.
  • a relay-contactor comprising a case, an electromagnet in said case and comprising a winding coil and a core of magnetically permeable material, said core being divided into two complemental sections, namely a front section and a rear section, means positioning said coil in said casing, said core sections being movable relative to said coil, means limiting forward movement of said rear core section, cushioning means yieldably holding said lower core section in engagement with said limiting means, said cushioning means comprising a block of foam material under compression, at least one pair of cooperating electrical contacts comprising a movable contact and a stationary contact, means coupling said movable contact with said upper core section for movement thereby between one operative position in which said contacts are closed and another operative position in which said contacts are open, means biasing said front core section to a forward position in which said core sections are separated from one another and said movable contact is in one of said operative positions, and means for energizing said winding to draw said core sections together and thereby move said movable contact to the other
  • a relay contactor as described in claim 1 characterized in that said means coupling said movable contact with said upper core section comprises an actuating member having means for mounting said movable contact, said actuating member having a lower portion defining an inner part of a dovetail joint, said upper core section having its top surface undercut to define a complementary outer part of said dovetail joint, and engaging said inner part of said dovetail joint to couple said movable contact mounted in said actuating member to said upper core section.
  • a relay contactor as described in claim 2 characterized in that said means for mounting said movable contact on said actuating member comprises on said actuating member a hollow post having a slotted top for supporting said movable contact, said movable contact having a hole coincident with said slotted top, a coiled spring for engaging said movable contact, a key having a spring retaining top, a spring engaging shank and oppositely disposed bottom projections, said bottom projections adapted to fit through said slotted top of said hollow post and rotate to lock in a bayonet type joint for securing said movable contact to said post of said actuating member.
  • a relay-contactor comprising a case having side walls, a base and a removable cover, an electromagnet in said case and comprising a coil and a core of magnetically permeable material, said core being divided into two complementary sections, namely a front section and a rear section, means positioning said coil in said case with its axis extending fore and aft, said core sections being movable relative to said coil, means limiting forward movement of said rear core section, cushioning means for said rear core section, said cushioning means comprising a block of foam material under compression resting on the base of said case, a plurality of cooperating electrical contacts including stationary contacts carried by said cover and movable contacts, means coupling said movable contacts to said front core section for movement thereby between one operative position in which said contacts are closed and another operative position in which said contacts are open, means biasing said front core section to a forward position in which said core sections are separated from one another and said movable contact is in one of said operative positions, and means for energizing said
  • a relay-contactor in which said coupling means comprises a switch actuating member extending through an opening in said cover and in which an auxiliary contactor unit is removably mounted on said cover and comprises a stationary contact and a movable contact in position to be engaged and actuated by said actuating member.
  • a relay-contactor comprising a case, a plurality of stationary contacts mounted on said case, means defining cells encompassing said stationary contacts, said cells being open at their outer ends, movable contacts cooperating with said stationary contacts, electromagnetic actuating means in said case, a switch actuating member extending through said case into said cells to connect said actuating means to said movable contacts, an auxiliary contactor unit removably mounted on said case with a portion fitting into at least one of said cells, said unit comprising a stationary contact and a movable contact in position to be engaged and actuated by said actuating member.
  • each of said cells has a base portion and a side wall portion with a slot through said side wall adjacent said base and in which a contact strip forming one of said stationary contacts is inserted through said slit and rests on said base, said strip fitting tightly in said slit and being thereby frictionally held in position.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Electromagnets (AREA)
  • Contacts (AREA)
  • Breakers (AREA)
US823653A 1959-06-29 1959-06-29 Relay-contactor Expired - Lifetime US2977438A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US823653A US2977438A (en) 1959-06-29 1959-06-29 Relay-contactor
DEM33649U DE1825204U (de) 1959-06-29 1959-12-11 Schaltschuetz.
DEM43661A DE1133791B (de) 1959-06-29 1959-12-11 Elektromagnetisches Schuetz
DEM51450A DE1237204B (de) 1959-06-29 1959-12-11 Befestigung einer Kontaktbruecke am Anker eines elektromagnetischen Schuetzes
GB10337/60A GB900812A (en) 1959-06-29 1960-03-23 Improvements in or relating to electromagnetic contactors
FR823378A FR1279242A (fr) 1959-06-29 1960-04-04 Relais de commutation
BE589741A BE589741A (fr) 1959-06-29 1960-04-14 Contacteur.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US823653A US2977438A (en) 1959-06-29 1959-06-29 Relay-contactor

Publications (1)

Publication Number Publication Date
US2977438A true US2977438A (en) 1961-03-28

Family

ID=25239334

Family Applications (1)

Application Number Title Priority Date Filing Date
US823653A Expired - Lifetime US2977438A (en) 1959-06-29 1959-06-29 Relay-contactor

Country Status (5)

Country Link
US (1) US2977438A (de)
BE (1) BE589741A (de)
DE (3) DE1237204B (de)
FR (1) FR1279242A (de)
GB (1) GB900812A (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109905A (en) * 1960-09-08 1963-11-05 Furaas Electric Company Magnetic contactor
US3129304A (en) * 1960-09-23 1964-04-14 Cutler Hammer Inc Reversible contact molded frame relay
US3196231A (en) * 1960-02-12 1965-07-20 Licentia Gmbh Switch which reduces rebounding of its contacts
US3215800A (en) * 1962-07-02 1965-11-02 Square D Co Electromagnetic relay and contact carrier assembly therefor
US3263135A (en) * 1963-10-14 1966-07-26 Nat Acme Co Shock absorber solenoid
US3265940A (en) * 1964-04-10 1966-08-09 John R Brandell Solenoid kicker
US3503019A (en) * 1967-10-26 1970-03-24 Ite Imperial Corp Noise damping means for electromagnet
FR2538037A1 (fr) * 1982-12-21 1984-06-22 Paris & Du Rhone Axe composite de contacteur electromagnetique de demarreur electrique
EP0189924A1 (de) * 1985-01-31 1986-08-06 Siemens Aktiengesellschaft Anordnung zum Ankoppeln einer Hilfsschalteranordnung
DE3503292A1 (de) * 1985-01-31 1986-08-07 Siemens AG, 1000 Berlin und 8000 München Anordnung zum ankoppeln einer hilfsschalteranordnung
US5197594A (en) * 1985-01-31 1993-03-30 Siemens Aktiengesellschaft Arrangement for coupling an auxiliary switch mechanism
EP1235015A3 (de) * 2001-02-26 2004-03-17 Woodward Governor Company Elektromagnet mit Haltevorrichtung aus Kunststoff
CN113611577A (zh) * 2021-10-09 2021-11-05 深圳市鑫道为科技有限公司 基于插接方式实现可更换式线圈结构的电磁继电器

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1244919B (de) * 1963-04-11 1967-07-20 Licentia Gmbh Anordnung zur Halterung des Kernes eines Schaltmagneten
DE1293890B (de) * 1963-06-05 1969-04-30 Ghisalba Spa Elektromagnetischer Schalter mit zwei entgegengesetzt beweglichen Hubankern
AT257731B (de) * 1964-06-03 1967-10-25 Naimer H L Magneteinrichtung für fernsteuerbare Schaltgeräte
SE411272B (sv) * 1978-05-02 1979-12-10 Asea Ab Elektromagnetiskt manovrerad elkopplare
DE3069816D1 (en) * 1980-03-13 1985-01-31 Square D Starkstrom Gmbh Contactor, particularly a power or control or starter contactor

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US2399575A (en) * 1943-05-06 1946-04-30 Arrow Hart & Hegeman Electric Electromagnetic switch
US2616998A (en) * 1948-05-31 1952-11-04 Sala Paolo Remote operated multiple element double break switch
US2884499A (en) * 1958-01-07 1959-04-28 Saia Ag Contactor
US2889426A (en) * 1956-12-24 1959-06-02 Cutler Hammer Inc Electric control device
US2908784A (en) * 1956-12-24 1959-10-13 Cutler Hammer Inc Electric control device
US2929899A (en) * 1957-07-03 1960-03-22 Telemecanique Electrique Contactor switch device
US2951922A (en) * 1958-11-07 1960-09-06 Vapor Heating Corp Electrical contactor assembly

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BE526848A (de) *
BE484372A (de) * 1947-08-14
DE949181C (de) * 1951-09-05 1956-09-13 Licentia Gmbh Drehstrom- oder Wechselstrommagnetsystem, bei dem ein Magnetkern an drei Punkten federnd am Gestell befestigt ist, insbesondere fuer Schuetze
US2782282A (en) * 1952-06-26 1957-02-19 Schrack Eduard Magnetically operable switch
BE528059A (de) * 1953-04-29
US2812403A (en) * 1954-01-19 1957-11-05 Gen Motors Corp Circuit breaker
US2874245A (en) * 1954-01-19 1959-02-17 Gen Motors Corp Circuit breaker
US2817729A (en) * 1954-09-13 1957-12-24 Allen Bradley Co Short stroke electro-magnetic actuator
DE1061412B (de) * 1955-06-18 1959-07-16 Licentia Gmbh Elastische Lagerung des Magnetkernes eines elektrischen Schuetzes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2399575A (en) * 1943-05-06 1946-04-30 Arrow Hart & Hegeman Electric Electromagnetic switch
US2616998A (en) * 1948-05-31 1952-11-04 Sala Paolo Remote operated multiple element double break switch
US2889426A (en) * 1956-12-24 1959-06-02 Cutler Hammer Inc Electric control device
US2908784A (en) * 1956-12-24 1959-10-13 Cutler Hammer Inc Electric control device
US2929899A (en) * 1957-07-03 1960-03-22 Telemecanique Electrique Contactor switch device
US2884499A (en) * 1958-01-07 1959-04-28 Saia Ag Contactor
US2951922A (en) * 1958-11-07 1960-09-06 Vapor Heating Corp Electrical contactor assembly

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3196231A (en) * 1960-02-12 1965-07-20 Licentia Gmbh Switch which reduces rebounding of its contacts
US3109905A (en) * 1960-09-08 1963-11-05 Furaas Electric Company Magnetic contactor
US3129304A (en) * 1960-09-23 1964-04-14 Cutler Hammer Inc Reversible contact molded frame relay
US3215800A (en) * 1962-07-02 1965-11-02 Square D Co Electromagnetic relay and contact carrier assembly therefor
US3263135A (en) * 1963-10-14 1966-07-26 Nat Acme Co Shock absorber solenoid
US3265940A (en) * 1964-04-10 1966-08-09 John R Brandell Solenoid kicker
US3503019A (en) * 1967-10-26 1970-03-24 Ite Imperial Corp Noise damping means for electromagnet
FR2538037A1 (fr) * 1982-12-21 1984-06-22 Paris & Du Rhone Axe composite de contacteur electromagnetique de demarreur electrique
EP0189924A1 (de) * 1985-01-31 1986-08-06 Siemens Aktiengesellschaft Anordnung zum Ankoppeln einer Hilfsschalteranordnung
DE3503292A1 (de) * 1985-01-31 1986-08-07 Siemens AG, 1000 Berlin und 8000 München Anordnung zum ankoppeln einer hilfsschalteranordnung
US5197594A (en) * 1985-01-31 1993-03-30 Siemens Aktiengesellschaft Arrangement for coupling an auxiliary switch mechanism
EP1235015A3 (de) * 2001-02-26 2004-03-17 Woodward Governor Company Elektromagnet mit Haltevorrichtung aus Kunststoff
CN113611577A (zh) * 2021-10-09 2021-11-05 深圳市鑫道为科技有限公司 基于插接方式实现可更换式线圈结构的电磁继电器

Also Published As

Publication number Publication date
DE1825204U (de) 1961-01-19
GB900812A (en) 1962-07-11
FR1279242A (fr) 1961-12-22
DE1133791B (de) 1962-07-26
DE1237204B (de) 1967-03-23
BE589741A (fr) 1960-08-01

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