US3225159A - Relay with coated plunger - Google Patents

Relay with coated plunger Download PDF

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Publication number
US3225159A
US3225159A US299935A US29993563A US3225159A US 3225159 A US3225159 A US 3225159A US 299935 A US299935 A US 299935A US 29993563 A US29993563 A US 29993563A US 3225159 A US3225159 A US 3225159A
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Prior art keywords
plunger
relay
contact
coil
post
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Expired - Lifetime
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US299935A
Inventor
Chester H Fluder
Harry L Myrent
Matthew R Heeney
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Vapor Corp
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Vapor Corp
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Priority to GB1051895D priority Critical patent/GB1051895A/en
Application filed by Vapor Corp filed Critical Vapor Corp
Priority to US299935A priority patent/US3225159A/en
Priority to FR976905A priority patent/FR1397058A/en
Priority to DEV26373A priority patent/DE1294552B/en
Priority to BE651352A priority patent/BE651352A/fr
Priority to ES0302792A priority patent/ES302792A1/en
Priority to NL6408982A priority patent/NL6408982A/xx
Application granted granted Critical
Publication of US3225159A publication Critical patent/US3225159A/en
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
    • 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
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles

Definitions

  • This invention relates in general to a relay, and more particularly to a relay having a solenoid with a coated plunger, and still more particularly to a relay having a solenoid with a nylon coated plunger.
  • the relay of the present invention is solenoid actuated and includes many features which enhance its life and decrease its maintenance. Particularly, the moving parts are so constructed and arranged as to reduce their wear and the wear of stationary parts in contact therewith.
  • the plunger of the solenoid in the relay of the present invention being a part that is subjected to substantial Wear, is preferably coated with nylon but may be coated with any other suitable substitute for the purpose of enhancing the life of the solenoid and also reducing the cost of construction.
  • a further object of the present invention is to provide a solenoid actuated relay having a plunger coated to enhance the life of the relay and reduce maintenance and construction costs.
  • a still further object of this invention is to provide a solenoid actuated relay having a nylon coated plunger.
  • Another object of this invention is to provide a solenoid actuated relay having a nylon coated plunger which eliminates the necessity of grinding and plating of the plunger in order to reduce wear and provide a better bearing surface.
  • Still another object of this invention is in the provision of a solenoid actuated relay having a nylon coated plunger which eliminates the necessity of providing special bearings and a brass shader on the mating face of the plunger.
  • a further object of the invention is in the provision of a solenoid actuated relay having a nylon coated plunger, wherein frictional wear is reduced.
  • FIG. 1 is an axial sectional view taken through the relay of the present invention, showing some parts in full view for purposes of clarity;
  • FIG. 2 is a perspective view of the solenoid plunger of the present invention.
  • the relay of the present invention includes generally a solenoid for operating an upper contact assembly 11 and a lower contact assembly 12.
  • the solenoid 10 includes a coil 13 having a core or spool 14 of insulating material receiving windings 15.
  • the coil 13 is received between upper and lower bars 16 and 17 of a U-shaped frame 18 that is constructed of magnetic material.
  • a spring washer 19 is inserted between the upper end of the coil and the upper bar 16 in order to hold it against axial movement between the upper and lower bars.
  • a bracket 18a is secured to the frame 18 and serves to mount the relay assembly where desired.
  • the coil 13 is provided with an axial bore 20 that aligns with axial bores 21 and 22 of the upper and lower bars 16 and 17 of the frame 18.
  • An enlarged bore 23 is provided in the upper bar 16 and coacts with the bore 21 to define therebetween a shoulder 24.
  • An elongated taube 25 of nonmagnetic material is received within the bore 20 of the coil 13, and has secured at its upper end a plug or plunger stop 26 of magnetic material.
  • the plunger stop 26 is provided with an annular flange 27 sized to engage the shoulder 24 in the upper bar 16 and thereby prevent downward movement of the stop and tube through the coil 13.
  • the tube 25 is received over the lower end of the plunger stop and along a diametrically reduced portion, and is secured to the stop by an annular indent 28 engaging in an annular groove on the stop.
  • An axial bore extends through the stop 26 and receives a nylon or suitable plastic sleeve 29, and the lower end of the stop is provided with a conical face 30.
  • a generally cylindrical plunger 31 of magnetic material is slidably received in the tube 25 and adapted to abut against the conical face 30 when the solenoid 10 is energized.
  • the upper end of the plunger as designated by the numeral 32 is conical to mate with the conical face 30 of the plunger stop.
  • a suitable plastic material such as nylon as indicated by the numeral 33.
  • the nylon coating 33 engages the tube 25 during operation of the solenoid 10.
  • An axial bore 34 extends through the plunger 31 to a threaded portion 35, the latter of which receives the threaded end 36 of a post 37 of nonmagnetic material.
  • the post 37 includes a slightly larger cylindrical portion 38 that is slidably received and extends through the nylon insert 29 of the plunger stop 26, and terminates at its upper end with a head 39.
  • a lower insulating block 40 is secured by a plurality of screws 41 to the upper bar 16 of the frame 18 and includes a bore 42 through which the upper end of the post 37 extends.
  • An upper insulating block 43 is mounted in spaced relation from the lower insulating block 40 and is provided with a plurality of contacts 44, each of which is electrically connected to terminal lugs 45.
  • the contacts 44 are constructed of electrically conductive nonmagnetic material.
  • Bridge contacts 46 are resiliently mounted on a contact carrier 47 and movable toward and away from the fixed contacts 44.
  • Each bridge contact 46 includes an electrically conductive nonmagnetic bar 48 extending transversely through the upper section 49 of the carrier 47. The opposite ends of the bar 48 are bent downwardly at 50 and contact pads 51 are provided to engage the fixed contacts 44.
  • the carrier 47 also includes a lower section 52 fitting with the upper section 49 and having a recess 53 for receiving a contact support bar 54.
  • a screw 55 extends through the upper and lower sections of the carrier and the support bar and threadedly engages in the head 39 of the post 37 to lock the sections and support bar together and to the post 37 so that the bridge contacts 46 move with the post 37 and the plunger 31 of the solenoid 10.
  • a spring 56 is bottomed at its upper end in a recess 57 of the upper insulating block 43 and at its lower end in a recess formed in the upper face of the upper carrier section 49.
  • the lower contact assembly 12 includes parallel opposed contact supports 58 and 59 of insulating material mounted on the lower bar 17 of the U-shaped frame 18. Each support carries a plurality of double faced fixed contacts 60 of electrically conductive nonmagnetic material. Lugs 61 are provided for connection to electrical conductors. The contacts 60 and lugs 61 are integral and are molded in the contact supports 58 and 59. A movable contact carrier 62 is arranged between the contact supports 58 and 59. This contact carrier is also constructed of insulating material and includes opposed ears 63 for mounting contact carrier pins 64. Each pin is capable of receiving a bridging contact such as indicated by the numeral '65 that is adapted to engage a pair of spaced fixed contacts 60. The bridging contact 65 is movable along the pin 64 but biased toward the ear 63 by means of a spring 66 that is held on the pin by a retaining clip 67.
  • the contact carrier 62 is secured to the lower end of the post 37 by means of a threaded bolt 68 having a hex head 69.
  • a tapped bore is provided in the hex head 69 to receive the threaded end 36 of the post and secure the head against the lower end of the plunger 31.
  • a bore 70 is provided in the contact carrier 62 for receiving the threaded bolt 68.
  • Nuts 71 and 72 are provided at opposite sides of the contact carrier 62 and in engagement It will be understood that modifications and variations may be effected without departing from the scope of the novel concepts of the present invention, but it is underhole and having a plunger stop of magnetically permeable material mounted therein at one end, a plunger of magnetically permeable material slidably received in said tubular member and having a plunger face adapted to abut against said plug when the coil is energized, said plunger having a coating of nylon completely thereover including said plunger face, whereby the coating on said plunger face controls the drop out of the relay and the coating of the plunger otherwise reduces frictional wear, and contact means operated by said plunger.
  • a relay as defined in claim 1 and a post secured to the plunger and extending from opposite ends, one end of said post extending through said plunger stop, a nylon sleeve bearing in said plunger stop through which the post slides, and said contact means being connected to said post.
  • a relay as defined in claim 2, wherein said contact means includes upper and lower contact assemblies, each contact assembly having spaced contacts, a contact carrier having bridge contacts mounted thereon and adapted to engage the fixed contacts, and means connecting each carrier to said post.
  • said contact means includes upper and lower contact assemblies, said upper contact assembly including a group of permanently fixed contacts arranged in pairs on a support of insulating material, said support extending perpendicular to said post, a group of movable contacts adapted to bridge selected pairs of said fixed contacts, a carrier of insulating material for said movable contacts movable toward and away from said support, means connecting said carrier to said plunger post, a spring bottomed on said support at one end and on said carrier at the other end for urging said carrier and plunger post in one direction during deenergization of said coil, said lower contact assembly including a group of permanently fixed contacts arranged in pairs upon a pair of oppositely disposed supports of insulating material and in a plane perpendicular to said post, a group of movable contacts adapted to bridge selected pairs of said fixed contacts, a carrier of insulating material for said movable contacts positioned between said oppositely disposed supports and movable between upper and lower positions, and means connecting said lower carrier

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Braking Arrangements (AREA)
  • Impact Printers (AREA)
  • Particle Accelerators (AREA)
  • Domestic Plumbing Installations (AREA)

Description

Dec. 21, 1965 c. H. FLUDER ETAL 3,225,159
RELAY WITH COATED PLUNGER Filed Aug. 5, 1963 INVENTORS CHESTER l-l. FLUDER HARRY L. MYRENT MATTH W R HE EY BY 1L (Q:
AT TORNEY United States Patent 3,225,159 RELAY WITH COATED PLUNGER Chester H. Fluder, Wheeling, Harry L. Myrent, Wilmette, and Matthew R. Heeney, Niles, Ill., assignors to Vapor Corporation, Chicago, Ill., a corporation of Delaware Filed Aug. 5, 1963, Ser. No. 299,935 4 Claims. (Cl. 200-87) This invention relates in general to a relay, and more particularly to a relay having a solenoid with a coated plunger, and still more particularly to a relay having a solenoid with a nylon coated plunger.
The relay of the present invention is solenoid actuated and includes many features which enhance its life and decrease its maintenance. Particularly, the moving parts are so constructed and arranged as to reduce their wear and the wear of stationary parts in contact therewith. The plunger of the solenoid in the relay of the present invention, being a part that is subjected to substantial Wear, is preferably coated with nylon but may be coated with any other suitable substitute for the purpose of enhancing the life of the solenoid and also reducing the cost of construction.
Heretofore, it was necessary to grind the plunger, specially plate it, and also employ special bearings against which the plunger would engage. Further, a brass shader was necessary on the mating face of the plunger in order to control relay dropout.
It is therefore an object of the present invention to eliminate the above enumerated difficulties and provide a new and improved relay.
A further object of the present invention is to provide a solenoid actuated relay having a plunger coated to enhance the life of the relay and reduce maintenance and construction costs.
A still further object of this invention is to provide a solenoid actuated relay having a nylon coated plunger.
Another object of this invention is to provide a solenoid actuated relay having a nylon coated plunger which eliminates the necessity of grinding and plating of the plunger in order to reduce wear and provide a better bearing surface.
Still another object of this invention is in the provision of a solenoid actuated relay having a nylon coated plunger which eliminates the necessity of providing special bearings and a brass shader on the mating face of the plunger.
A further object of the invention is in the provision of a solenoid actuated relay having a nylon coated plunger, wherein frictional wear is reduced.
Other objects, features and advantages of the invention will be apparent from the following detailed disclosure, taken in conjunction with the accompanying sheet of drawing, wherein like reference numerals refer to like parts, in which:
FIG. 1 is an axial sectional view taken through the relay of the present invention, showing some parts in full view for purposes of clarity; and
FIG. 2 is a perspective view of the solenoid plunger of the present invention.
Referring now to the drawings, the relay of the present invention includes generally a solenoid for operating an upper contact assembly 11 and a lower contact assembly 12.
The solenoid 10 includes a coil 13 having a core or spool 14 of insulating material receiving windings 15. The coil 13 is received between upper and lower bars 16 and 17 of a U-shaped frame 18 that is constructed of magnetic material. A spring washer 19 is inserted between the upper end of the coil and the upper bar 16 in order to hold it against axial movement between the upper and lower bars. A bracket 18a is secured to the frame 18 and serves to mount the relay assembly where desired. The coil 13 is provided with an axial bore 20 that aligns with axial bores 21 and 22 of the upper and lower bars 16 and 17 of the frame 18. An enlarged bore 23 is provided in the upper bar 16 and coacts with the bore 21 to define therebetween a shoulder 24.
An elongated taube 25 of nonmagnetic material is received within the bore 20 of the coil 13, and has secured at its upper end a plug or plunger stop 26 of magnetic material. The plunger stop 26 is provided with an annular flange 27 sized to engage the shoulder 24 in the upper bar 16 and thereby prevent downward movement of the stop and tube through the coil 13. The tube 25 is received over the lower end of the plunger stop and along a diametrically reduced portion, and is secured to the stop by an annular indent 28 engaging in an annular groove on the stop. An axial bore extends through the stop 26 and receives a nylon or suitable plastic sleeve 29, and the lower end of the stop is provided with a conical face 30. V
A generally cylindrical plunger 31 of magnetic material is slidably received in the tube 25 and adapted to abut against the conical face 30 when the solenoid 10 is energized. Thus, the upper end of the plunger as designated by the numeral 32 is conical to mate with the conical face 30 of the plunger stop. In order to reduce Wear on the plunger 31 and to reduce constructional costs, it is coated or clad with a suitable plastic material such as nylon as indicated by the numeral 33. Thus, the nylon coating 33 engages the tube 25 during operation of the solenoid 10.
An axial bore 34 extends through the plunger 31 to a threaded portion 35, the latter of which receives the threaded end 36 of a post 37 of nonmagnetic material. The post 37 includes a slightly larger cylindrical portion 38 that is slidably received and extends through the nylon insert 29 of the plunger stop 26, and terminates at its upper end with a head 39.
A lower insulating block 40 is secured by a plurality of screws 41 to the upper bar 16 of the frame 18 and includes a bore 42 through which the upper end of the post 37 extends. An upper insulating block 43 is mounted in spaced relation from the lower insulating block 40 and is provided with a plurality of contacts 44, each of which is electrically connected to terminal lugs 45. The contacts 44 are constructed of electrically conductive nonmagnetic material.
Bridge contacts 46 are resiliently mounted on a contact carrier 47 and movable toward and away from the fixed contacts 44. Each bridge contact 46 includes an electrically conductive nonmagnetic bar 48 extending transversely through the upper section 49 of the carrier 47. The opposite ends of the bar 48 are bent downwardly at 50 and contact pads 51 are provided to engage the fixed contacts 44. The carrier 47 also includes a lower section 52 fitting with the upper section 49 and having a recess 53 for receiving a contact support bar 54. A screw 55 extends through the upper and lower sections of the carrier and the support bar and threadedly engages in the head 39 of the post 37 to lock the sections and support bar together and to the post 37 so that the bridge contacts 46 move with the post 37 and the plunger 31 of the solenoid 10. A spring 56 is bottomed at its upper end in a recess 57 of the upper insulating block 43 and at its lower end in a recess formed in the upper face of the upper carrier section 49. Thus, a constant force is urged to drive the contact carrier and plunger downwardly and such will do so when the solenoid 10 is not energized. Upon energization of the solenoid 10, the force of the spring 56 is overcome to drive the contact carrier 47 upwardly so that the bridge contacts 46 engage the fixed contacts 44.
The lower contact assembly 12 includes parallel opposed contact supports 58 and 59 of insulating material mounted on the lower bar 17 of the U-shaped frame 18. Each support carries a plurality of double faced fixed contacts 60 of electrically conductive nonmagnetic material. Lugs 61 are provided for connection to electrical conductors. The contacts 60 and lugs 61 are integral and are molded in the contact supports 58 and 59. A movable contact carrier 62 is arranged between the contact supports 58 and 59. This contact carrier is also constructed of insulating material and includes opposed ears 63 for mounting contact carrier pins 64. Each pin is capable of receiving a bridging contact such as indicated by the numeral '65 that is adapted to engage a pair of spaced fixed contacts 60. The bridging contact 65 is movable along the pin 64 but biased toward the ear 63 by means of a spring 66 that is held on the pin by a retaining clip 67.
The contact carrier 62 is secured to the lower end of the post 37 by means of a threaded bolt 68 having a hex head 69. A tapped bore is provided in the hex head 69 to receive the threaded end 36 of the post and secure the head against the lower end of the plunger 31. A bore 70 is provided in the contact carrier 62 for receiving the threaded bolt 68. Nuts 71 and 72 are provided at opposite sides of the contact carrier 62 and in engagement It will be understood that modifications and variations may be effected without departing from the scope of the novel concepts of the present invention, but it is underhole and having a plunger stop of magnetically permeable material mounted therein at one end, a plunger of magnetically permeable material slidably received in said tubular member and having a plunger face adapted to abut against said plug when the coil is energized, said plunger having a coating of nylon completely thereover including said plunger face, whereby the coating on said plunger face controls the drop out of the relay and the coating of the plunger otherwise reduces frictional wear, and contact means operated by said plunger.
2. A relay as defined in claim 1, and a post secured to the plunger and extending from opposite ends, one end of said post extending through said plunger stop, a nylon sleeve bearing in said plunger stop through which the post slides, and said contact means being connected to said post.
3. A relay as defined in claim 2, wherein said contact means includes upper and lower contact assemblies, each contact assembly having spaced contacts, a contact carrier having bridge contacts mounted thereon and adapted to engage the fixed contacts, and means connecting each carrier to said post.
4. A relay as defined in claim 2, wherein said contact means includes upper and lower contact assemblies, said upper contact assembly including a group of permanently fixed contacts arranged in pairs on a support of insulating material, said support extending perpendicular to said post, a group of movable contacts adapted to bridge selected pairs of said fixed contacts, a carrier of insulating material for said movable contacts movable toward and away from said support, means connecting said carrier to said plunger post, a spring bottomed on said support at one end and on said carrier at the other end for urging said carrier and plunger post in one direction during deenergization of said coil, said lower contact assembly including a group of permanently fixed contacts arranged in pairs upon a pair of oppositely disposed supports of insulating material and in a plane perpendicular to said post, a group of movable contacts adapted to bridge selected pairs of said fixed contacts, a carrier of insulating material for said movable contacts positioned between said oppositely disposed supports and movable between upper and lower positions, and means connecting said lower carrier to said plunger post.
References Cited by the Examiner UNITED STATES PATENTS 2,951,133 8/1960 Davies et al. 200-lll X 2,985,802 5/1961 Drenning 317l91 3,166,654 1/1965 Mitchell 200112 FOREIGN PATENTS 925,132 5/1963 Great Britain.
BERNARD A. GILHEANY, Primary Examiner.
J. I. BAKER, Assistant Examiner.

Claims (1)

1. A RELAY COMPRISING, A COIL HAVING A HOLE EXTENDING THERETHROUGH, A FRAME RECEIVING SAID COIL, A TUBULAR MEMBER OF NONMAGNETIC MATERIAL EXTENDING THROUGH SAID COIL HOLE AND HAVING A PLUNGER STOP OF MAGNETICALLY PERMEABLE MATEIAL MOUNTED THEREIN AT ONE END, A PLUNGER OF MAGNETICALLY PERMEABLE MATERIAL SLIDABLY RECEIVED IN SAID TUBULAR MEMBER AND HAVING A PLUNGER FACE ADAPTED TO ABUT AGAINST SAID PLUG WHEN THE COIL IS ENERGIZED, SAID PLUNGER HAVING A COATING OF NYLON COMPLETELY THEREOVER
US299935A 1963-08-05 1963-08-05 Relay with coated plunger Expired - Lifetime US3225159A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB1051895D GB1051895A (en) 1963-08-05
US299935A US3225159A (en) 1963-08-05 1963-08-05 Relay with coated plunger
FR976905A FR1397058A (en) 1963-08-05 1964-06-03 Relay with plastic coated plunger core
DEV26373A DE1294552B (en) 1963-08-05 1964-07-16 Immersion armature relay
BE651352A BE651352A (en) 1963-08-05 1964-08-03
ES0302792A ES302792A1 (en) 1963-08-05 1964-08-04 Relay with coated plunger
NL6408982A NL6408982A (en) 1963-08-05 1964-08-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US299935A US3225159A (en) 1963-08-05 1963-08-05 Relay with coated plunger

Publications (1)

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US3225159A true US3225159A (en) 1965-12-21

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US299935A Expired - Lifetime US3225159A (en) 1963-08-05 1963-08-05 Relay with coated plunger

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US (1) US3225159A (en)
BE (1) BE651352A (en)
DE (1) DE1294552B (en)
ES (1) ES302792A1 (en)
FR (1) FR1397058A (en)
GB (1) GB1051895A (en)
NL (1) NL6408982A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808676A (en) * 1973-02-16 1974-05-07 Black & Decker Mfg Co Process of manufacturing an armature-piston sub-assembly
US4149132A (en) * 1976-11-06 1979-04-10 U.S. Philips Corporation Method of manufacturing an electromagnet
FR2676508A1 (en) * 1991-05-18 1992-11-20 Bosch Gmbh Robert STARTER RELAY FOR THE STARTER OF AN INTERNAL COMBUSTION ENGINE.
US20090322456A1 (en) * 2008-06-30 2009-12-31 Remy International, Inc. Starter Solenoid with Vibration Resistant Features
US20120092095A1 (en) * 2010-10-15 2012-04-19 Lsis Co., Ltd. Electromagnetic switching device
DE102014226624A1 (en) * 2014-12-19 2016-06-23 Siemens Aktiengesellschaft switchgear
US20220262589A1 (en) * 2019-07-16 2022-08-18 Suzhou Littelfuse Ovs Co., Ltd. Two-part solenoid plunger

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2736397B1 (en) * 1995-07-05 1997-08-08 Valeo Equip Electr Moteur MOTOR VEHICLE STARTER COMPRISING A SINGLE-BLOCK CONTACTOR COIL AND CONTACTOR FOR SUCH A STARTER

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951133A (en) * 1954-01-11 1960-08-30 Cutler Hammer Inc Hermetically sealed electromagnetic contactors and the like
US2985802A (en) * 1958-03-28 1961-05-23 Koppers Co Inc Magnetic impulse rapper
GB925132A (en) * 1960-11-05 1963-05-01 Bosch Gmbh Robert Improvements in or relating to electromagnetic switches
US3166654A (en) * 1961-10-31 1965-01-19 Ebert Electronics Corp Mercury relay

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790876A (en) * 1954-03-22 1957-04-30 Elgin Instr Company Relay
DE1855476U (en) * 1962-05-16 1962-07-26 Sachsenwerk Licht & Kraft Ag ELECTROMAGNETIC DEVICE.
DE1801267A1 (en) * 1968-10-04 1970-05-14 Siemens Ag Electrical distribution device, especially for traffic signal systems

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951133A (en) * 1954-01-11 1960-08-30 Cutler Hammer Inc Hermetically sealed electromagnetic contactors and the like
US2985802A (en) * 1958-03-28 1961-05-23 Koppers Co Inc Magnetic impulse rapper
GB925132A (en) * 1960-11-05 1963-05-01 Bosch Gmbh Robert Improvements in or relating to electromagnetic switches
US3166654A (en) * 1961-10-31 1965-01-19 Ebert Electronics Corp Mercury relay

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808676A (en) * 1973-02-16 1974-05-07 Black & Decker Mfg Co Process of manufacturing an armature-piston sub-assembly
US4149132A (en) * 1976-11-06 1979-04-10 U.S. Philips Corporation Method of manufacturing an electromagnet
FR2676508A1 (en) * 1991-05-18 1992-11-20 Bosch Gmbh Robert STARTER RELAY FOR THE STARTER OF AN INTERNAL COMBUSTION ENGINE.
US20090322456A1 (en) * 2008-06-30 2009-12-31 Remy International, Inc. Starter Solenoid with Vibration Resistant Features
US7982564B2 (en) * 2008-06-30 2011-07-19 Remy Technologies, Llc Starter solenoid with vibration resistant features
US20120092095A1 (en) * 2010-10-15 2012-04-19 Lsis Co., Ltd. Electromagnetic switching device
US8461950B2 (en) * 2010-10-15 2013-06-11 Lsis Co., Ltd. Electromagnetic switching device
DE102014226624A1 (en) * 2014-12-19 2016-06-23 Siemens Aktiengesellschaft switchgear
DE102014226624B4 (en) 2014-12-19 2024-03-28 Siemens Aktiengesellschaft Switching device
US20220262589A1 (en) * 2019-07-16 2022-08-18 Suzhou Littelfuse Ovs Co., Ltd. Two-part solenoid plunger
US11854756B2 (en) * 2019-07-16 2023-12-26 Suzhou Littelfuse Ovs Co., Ltd. Two-part solenoid plunger

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Publication number Publication date
NL6408982A (en) 1965-02-08
DE1294552B (en) 1969-05-08
ES302792A1 (en) 1964-11-01
FR1397058A (en) 1965-04-23
BE651352A (en) 1964-12-01
GB1051895A (en)

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