US20010040018A1 - Electromagnetic actuator with lamination stack-housing dovetail connection - Google Patents
Electromagnetic actuator with lamination stack-housing dovetail connection Download PDFInfo
- Publication number
- US20010040018A1 US20010040018A1 US09/204,376 US20437698A US2001040018A1 US 20010040018 A1 US20010040018 A1 US 20010040018A1 US 20437698 A US20437698 A US 20437698A US 2001040018 A1 US2001040018 A1 US 2001040018A1
- Authority
- US
- United States
- Prior art keywords
- lamination stack
- housing
- shaped feature
- shaped
- lamination
- 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.)
- Abandoned
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F7/1638—Armatures not entering the winding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/02—Cores, Yokes, or armatures made from sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/081—Magnetic constructions
Definitions
- This invention relates to an electromagnetic actuator for a vehicle engine and, more particularly, to a method of securing a lamination stack of the actuator to a housing of the actuator.
- a conventional electromagnetic actuator for opening and closing a valve of an internal combustion engine generally includes “open” and “close” electromagnets which, when energized, produce an electromagnetic force on an armature.
- the armature is biased by a pair of identical springs arranged in parallel.
- the armature is coupled with a cylinder valve of the engine.
- the armature rests approximately half-way between the open and close electromagnets when the springs are in equilibrium.
- potential energy is stored by the springs.
- the spring's potential energy will be converted to kinetic energy of the moving mass and cause the armature to move towards the close electromagnet. If friction is sufficiently low, the armature can then be caught in the closed position by applying current to the close electromagnet.
- the conventional electromagnetic actuator includes a pair of electromagnets each including a lamination stack coupled to a housing.
- a coil is associated with each lamination stack.
- the lamination stack is secured to the housing by a pin connection which is generally difficult to install due to the forces required to create an interference fit with the housing.
- An object of the present invention is to fulfill the need referred to above.
- this objective is obtained by a method of joining a lamination stack of an electromagnetic actuator to a housing of the actuator which includes providing a lamination stack having at least one shaped feature.
- a mold is provided to define the housing.
- the lamination stack is inserted into the mold such that the shaped feature of the lamination stack will define a mating shaped feature in the housing.
- Material is cast around at least a portion of lamination stack to define the housing such that the shaped feature of the lamination stack is engaged with the shaped feature of the housing, thereby joining the lamination stack to the housing.
- the assembly of the lamination stack and housing is then removed from the mold.
- a lamination stack and housing assembly for an electromagnetic actuator which includes a lamination stack and a housing.
- the lamination stack has a plurality of individual laminations.
- the lamination stack also includes a bottom surface and a shaped feature associated with the bottom surface.
- the housing has an upper surface and a shaped feature associated with the upper surface. The housing receives the lamination stack such that the shaped feature of the lamination stack is engaged with the shaped feature of the housing and the bottom surface of the lamination stack contacts the upper surface of the housing.
- FIG. 1 is a sectional view of an electromagnetic actuator having a housing-lamination stack connection provided in accordance with the principles of the present invention
- FIG. 2 is a perspective view of a lamination stack of the electromagnetic actuator of FIG. 1;
- FIG. 3 is a perspective view of a cast lower housing of the electromagnetic actuator of FIG. 1, shown without the lamination stack coupled thereto;
- FIG. 4 is a cross-sectional view of the lamination stack of the actuator of FIG. 1, shown coupled to the lower housing after a casting operation.
- an electromagnetic actuator is shown, generally indicated 10 , having a lower housing assembly and lamination stack connection provided in accordance with the principles of the present invention.
- the electromagnetic actuator 10 includes an upper housing 13 containing an upper electromagnet 15 and a lower housing 17 containing a lower electromagnet 19 .
- An armature 21 is arranged for movement between the electromagnets 15 and 19 .
- the armature 21 is carried by a shaft 23 .
- the shaft 23 is configured to be coupled to a stem of a cylinder valve (not shown) of an engine of a vehicle in the conventional manner.
- the lower electromagnet 15 includes a lamination stack, generally indicated at 14 , which is contained in the lower housing 17 .
- the lamination stack 14 comprises a plurality of individual stacked laminations 16 preferably composed of a soft magnetic material such as silicon iron.
- Each lamination 16 is generally E-shaped defining channels 18 to receive a coil assembly 24 (FIG. 1) of the electromagnet 19 .
- each lamination 16 is preferably joined by a weld 29 , or other suitable method such as by pins or an interlocking arrangement to define the lamination stack 14 .
- each lamination 16 includes at least one shaped feature associated with a bottom surface 28 thereof which cooperate to define at least one shaped feature 26 of the lamination stack 14 .
- the shaped feature 26 includes two dovetails projecting in spaced relation from the bottom surface 28 , used to secure the lamination stack 14 to the lower housing 17 , as will become apparent below.
- FIG. 3 shows the configuration of a cast lower housing 17 without the lamination stack 14 coupled thereto.
- the lower housing 17 includes at least one shaped feature 30 associated with the upper surface 32 thereof and constructed and arranged to mate with the shaped feature 26 of the lamination stack 14 .
- the shaped feature 30 of the lower housing 17 includes two spaced channels 30 defined in the upper surface 32 thereof to receive the dovetails 26 of the lamination stack 14 .
- the lamination stack 14 should be in intimate contact with the lower housing 17 . This is best achieved by first placing the lamination stack inside a mold 34 .
- the mold is configured to define the lower housing 17 .
- the dovetails 26 of the lamination stack 14 define the shaped features 30 or channels in the lower housing 17 during the casting operation.
- the lower housing 17 is composed of aluminum.
- other castable materials exhibiting good heat transfer properties can be employed as the material for the lower housing 17 .
- aluminum is cast around the lamination stack 14 such that upon hardening of the aluminum, the dovetails 26 of the lamination stack 14 are engaged with the channels 30 of the lower housing 17 thereby joining the lamination stack 14 to the lower housing 17 .
- FIG. 4 shows a cross-section of the lamination stack 14 joined to the lower housing 17 after the casting operation, with the upper surface of the lower housing 17 contacting the bottom surface 28 of the lamination stack 14 . After the aluminum has hardened, the assembly of the lower housing 17 and lamination stack 14 is removed from the mold.
- the lamination stack 14 can include the channel(s) and the lower housing 17 can include the mating dovetail(s).
- the shaped features 26 of the lamination stack 14 were shown to be dovetails and the mating shaped features 30 of the lower housing 17 were shown to be channels, it can be appreciated that the mating shaped features 26 and 30 may be of other configurations to join the lamination stack 14 to the lower housing 17 .
- one of the components can include a groove and the other part can include a protrusion to be received in the groove.
- Casting of the lamination stack 14 inside the housing 17 advantageously reduces machining operations necessary to prepare the housing for the lamination stack if the two components were to be assembled separately. Engagement of the lamination stack among its length by the housing provides added rigidity to the lamination stack, reducing deflection during operation of the actuator.
Abstract
A method of joining a lamination stack of an electromagnetic actuator to a housing of the actuator includes providing a lamination stack having at least one surface feature. A mold is provided to define the housing. The lamination stack is inserted into the mold such that the surface feature of the lamination stack will define a mating surface feature in the housing. Material is cast around at least a portion of lamination stack to define the housing such that the surface feature of the lamination stack is engaged with the surface feature of the housing, thereby joining the lamination stack to the housing. The assembly of the lamination stack and housing is then removed from the mold.
Description
- This application claims the benefit of U.S. Provisional Application No. 60/069,144, filed Dec. 9, 1997, the contents of which is hereby incorporated by reference in its entirety herein.
- This invention relates to an electromagnetic actuator for a vehicle engine and, more particularly, to a method of securing a lamination stack of the actuator to a housing of the actuator.
- A conventional electromagnetic actuator for opening and closing a valve of an internal combustion engine generally includes “open” and “close” electromagnets which, when energized, produce an electromagnetic force on an armature. The armature is biased by a pair of identical springs arranged in parallel. The armature is coupled with a cylinder valve of the engine. The armature rests approximately half-way between the open and close electromagnets when the springs are in equilibrium. When the armature is held by a magnetic force in either the closed or opened position (at rest against the open or close electromagnet), potential energy is stored by the springs. If the magnetic force is shut off with the armature in the opened position, the spring's potential energy will be converted to kinetic energy of the moving mass and cause the armature to move towards the close electromagnet. If friction is sufficiently low, the armature can then be caught in the closed position by applying current to the close electromagnet.
- The conventional electromagnetic actuator includes a pair of electromagnets each including a lamination stack coupled to a housing. A coil is associated with each lamination stack. Typically, the lamination stack is secured to the housing by a pin connection which is generally difficult to install due to the forces required to create an interference fit with the housing.
- There is a need to provide a lamination stack-housing connection which is easy to manufacture, allows a more rigid assembly, and provides intimate contact between the two components to facilitate heat transfer.
- An object of the present invention is to fulfill the need referred to above. In accordance with the principles of the present invention, this objective is obtained by a method of joining a lamination stack of an electromagnetic actuator to a housing of the actuator which includes providing a lamination stack having at least one shaped feature. A mold is provided to define the housing. The lamination stack is inserted into the mold such that the shaped feature of the lamination stack will define a mating shaped feature in the housing. Material is cast around at least a portion of lamination stack to define the housing such that the shaped feature of the lamination stack is engaged with the shaped feature of the housing, thereby joining the lamination stack to the housing. The assembly of the lamination stack and housing is then removed from the mold.
- In accordance with another aspect of the invention, a lamination stack and housing assembly for an electromagnetic actuator is provided which includes a lamination stack and a housing. The lamination stack has a plurality of individual laminations. The lamination stack also includes a bottom surface and a shaped feature associated with the bottom surface. The housing has an upper surface and a shaped feature associated with the upper surface. The housing receives the lamination stack such that the shaped feature of the lamination stack is engaged with the shaped feature of the housing and the bottom surface of the lamination stack contacts the upper surface of the housing.
- Other objects, features and characteristic of the present invention, as well as the methods of operation and the functions of the related elements of the structure, the combination of parts and economics of manufacture will become more apparent upon consideration of the following detailed description and appended claims with reference to the accompanying drawings, all of which form a part of this specification.
- FIG. 1 is a sectional view of an electromagnetic actuator having a housing-lamination stack connection provided in accordance with the principles of the present invention;
- FIG. 2 is a perspective view of a lamination stack of the electromagnetic actuator of FIG. 1;
- FIG. 3 is a perspective view of a cast lower housing of the electromagnetic actuator of FIG. 1, shown without the lamination stack coupled thereto; and
- FIG. 4 is a cross-sectional view of the lamination stack of the actuator of FIG. 1, shown coupled to the lower housing after a casting operation.
- Referring to FIG. 1, an electromagnetic actuator is shown, generally indicated10, having a lower housing assembly and lamination stack connection provided in accordance with the principles of the present invention. The
electromagnetic actuator 10 includes anupper housing 13 containing anupper electromagnet 15 and alower housing 17 containing alower electromagnet 19. An armature 21 is arranged for movement between theelectromagnets shaft 23. Theshaft 23 is configured to be coupled to a stem of a cylinder valve (not shown) of an engine of a vehicle in the conventional manner. - The invention will be described with regard to the
lower electromagnet 19. It will be appreciated, however, that the principles of the invention are applicable to the construction of theupper electromagnet 15 as well. Thus, with reference to FIG. 1, thelower electromagnet 15 includes a lamination stack, generally indicated at 14, which is contained in thelower housing 17. As shown in FIG. 2, thelamination stack 14 comprises a plurality of individual stackedlaminations 16 preferably composed of a soft magnetic material such as silicon iron. Eachlamination 16 is generally E-shaped definingchannels 18 to receive a coil assembly 24 (FIG. 1) of theelectromagnet 19. Theindividual laminations 16 are preferably joined by aweld 29, or other suitable method such as by pins or an interlocking arrangement to define thelamination stack 14. In accordance with the invention, eachlamination 16 includes at least one shaped feature associated with abottom surface 28 thereof which cooperate to define at least oneshaped feature 26 of thelamination stack 14. In the illustrated embodiment, theshaped feature 26 includes two dovetails projecting in spaced relation from thebottom surface 28, used to secure thelamination stack 14 to thelower housing 17, as will become apparent below. - FIG. 3 shows the configuration of a cast
lower housing 17 without thelamination stack 14 coupled thereto. As shown, thelower housing 17 includes at least oneshaped feature 30 associated with theupper surface 32 thereof and constructed and arranged to mate with theshaped feature 26 of thelamination stack 14. In the illustrated embodiment, theshaped feature 30 of thelower housing 17 includes two spacedchannels 30 defined in theupper surface 32 thereof to receive thedovetails 26 of thelamination stack 14. - For best possible heat transfer, the
lamination stack 14 should be in intimate contact with thelower housing 17. This is best achieved by first placing the lamination stack inside amold 34. The mold is configured to define thelower housing 17. Thus, thedovetails 26 of thelamination stack 14 define theshaped features 30 or channels in thelower housing 17 during the casting operation. In the illustrated embodiment, thelower housing 17 is composed of aluminum. However, it can be appreciated that other castable materials exhibiting good heat transfer properties can be employed as the material for thelower housing 17. Thus, aluminum is cast around thelamination stack 14 such that upon hardening of the aluminum, thedovetails 26 of thelamination stack 14 are engaged with thechannels 30 of thelower housing 17 thereby joining thelamination stack 14 to thelower housing 17. FIG. 4 shows a cross-section of thelamination stack 14 joined to thelower housing 17 after the casting operation, with the upper surface of thelower housing 17 contacting thebottom surface 28 of thelamination stack 14. After the aluminum has hardened, the assembly of thelower housing 17 andlamination stack 14 is removed from the mold. - It can be appreciated that instead of the providing the dovetail(s)26 in the
lamination stack 14 and channel(s) 30 in thelower housing 17, thelamination stack 14 can include the channel(s) and thelower housing 17 can include the mating dovetail(s). - Although the
shaped features 26 of thelamination stack 14 were shown to be dovetails and the mating shapedfeatures 30 of thelower housing 17 were shown to be channels, it can be appreciated that the mating shapedfeatures lamination stack 14 to thelower housing 17. For example, one of the components can include a groove and the other part can include a protrusion to be received in the groove. - Casting of the
lamination stack 14 inside thehousing 17 advantageously reduces machining operations necessary to prepare the housing for the lamination stack if the two components were to be assembled separately. Engagement of the lamination stack among its length by the housing provides added rigidity to the lamination stack, reducing deflection during operation of the actuator. - Further, since the
dovetails 26 of thelamination stack 14 engage thechannels 30 in thehousing 17, and the generally planarupper surface 32 of thehousing 17 contacts the generallyplanar bottom surface 28 of thelamination stack 17, good heat transfer between these two components is facilitated. - The foregoing preferred embodiments have been shown and described for the purposes of illustrating the structural and functional principles of the present invention, as well as illustrating the methods of employing the preferred embodiments and are subject to change without departing from such principles. Therefore, this invention includes all modifications encompassed within the spirit of the following claims.
Claims (15)
1. A method of joining a lamination stack of an electromagnetic actuator to a housing of the actuator, the method comprising:
providing a lamination stack having at least one shaped feature,
providing a mold to define the housing,
inserting the lamination stack into the mold such that said shaped feature of said lamination stack will define a mating shaped feature in said housing, and
casting material around at least a portion of said lamination stack to define said housing such that said shaped feature of said lamination stack is engaged with said shaped feature of said housing, thereby joining said lamination stack to said housing.
2. The method according to , further comprising: removing said lamination stack together with the housing from said mold.
claim 1
3. The method according to , wherein said shaped feature of said lamination stack comprises one of a dovetail and a channel, and said shaped feature of said housing includes the other of said dovetail and said channel.
claim 1
4. The method according to , wherein said shaped feature of said lamination stack includes a dovetail and said shaped feature of said housing includes a channel receiving said dovetail.
claim 3
5. The method according to , wherein a pair of dovetails extend in spaced relation from a bottom surface of said lamination stack which mate with a pair of channels in said housing.
claim 4
6. The method according to , wherein aluminum is cast in the mold to define said housing.
claim 1
7. The method according to , wherein said lamination stack is provided by joining a plurality of individual lamination together, each of said individual laminations having a shaped feature which cooperate to define said shaped feature of said lamination stack.
claim 1
8. The method according to , wherein said shaped feature of said lamination stack is associated with a bottom surface of said lamination stack and said shaped feature of said housing is associated with an upper surface of said housing, and said casting is such that said when said shaped features are engaged, said upper surface of said housing contacts said bottom surface of said lamination stack.
claim 1
9. The method according to , wherein a plurality of shaped features are provided on a the lamination stack and a corresponding number of mating shaped features are defined in the housing upon casting said material.
claim 1
10. A lamination and housing assembly for an electromagnetic actuator comprising:
a lamination stack comprising a plurality of individual laminations, said lamination stack including a bottom surface and a shaped feature associated with said bottom surface, and
a housing having an upper surface and a shaped feature associated with said upper surface, said housing receiving said lamination stack such that said shaped feature of said lamination stack is engaged with said shaped feature of said housing, with said bottom surface of said lamination stack contacting said upper surface of said housing.
11. The assembly according to , wherein said shaped feature of said lamination stack includes a dovetail and said shaped feature of said housing includes a channel receiving said dovetail.
claim 10
12. The assembly according to , wherein each of said individual laminations is of generally E-shape.
claim 10
13. The assembly according to , wherein said bottom surface of said lamination stack and said upper surface of said housing are each generally planar.
claim 10
14. The assembly according to , wherein said laminations are made of magnetic material and said housing is composed of aluminum.
claim 10
15. The assembly according to , wherein a plurality of shaped features are provided on said lamination stack and a corresponding number of shaped features are provided on said housing.
claim 10
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/204,376 US20010040018A1 (en) | 1997-12-09 | 1998-12-02 | Electromagnetic actuator with lamination stack-housing dovetail connection |
EP98123223A EP0921536B1 (en) | 1997-12-09 | 1998-12-07 | Electromagnetic actuator with lamination stack-housing dovetail connection |
DE69832458T DE69832458T2 (en) | 1997-12-09 | 1998-12-07 | Electromagnetic actuator with dovetailed laminated core housing connection |
JP10350254A JPH11260639A (en) | 1997-12-09 | 1998-12-09 | Joining method for lamination stack of electromagnetic actuator to housing of the actuator and lamination and housing assembly for the electromagnetic actuator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6914497P | 1997-12-09 | 1997-12-09 | |
US09/204,376 US20010040018A1 (en) | 1997-12-09 | 1998-12-02 | Electromagnetic actuator with lamination stack-housing dovetail connection |
Publications (1)
Publication Number | Publication Date |
---|---|
US20010040018A1 true US20010040018A1 (en) | 2001-11-15 |
Family
ID=26749734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/204,376 Abandoned US20010040018A1 (en) | 1997-12-09 | 1998-12-02 | Electromagnetic actuator with lamination stack-housing dovetail connection |
Country Status (4)
Country | Link |
---|---|
US (1) | US20010040018A1 (en) |
EP (1) | EP0921536B1 (en) |
JP (1) | JPH11260639A (en) |
DE (1) | DE69832458T2 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070261231A1 (en) * | 2006-05-09 | 2007-11-15 | Spang & Company | Methods of manufacturing and assembling electromagnetic assemblies and core segments that form the same |
US20070262839A1 (en) * | 2006-05-09 | 2007-11-15 | Spang & Company | Electromagnetic assemblies, core segments that form the same, and their methods of manufacture |
WO2007133399A2 (en) * | 2006-05-09 | 2007-11-22 | Spang & Company | Electromagnetic assemblies, core segments that form the same, and their methods of manufacture |
EP3246926A1 (en) * | 2016-05-20 | 2017-11-22 | Melexis Technologies SA | Magnetic flux concentrator structure and method for manufacturing the same |
US10714291B2 (en) * | 2015-12-11 | 2020-07-14 | Omron Corporation | Relay |
US10726985B2 (en) * | 2018-03-22 | 2020-07-28 | Schaeffler Technologies AG & Co. KG | Multi-stage actuator assembly |
US10964504B2 (en) | 2015-12-11 | 2021-03-30 | Omron Corporation | Relay |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6067000A (en) * | 1999-01-21 | 2000-05-23 | Siemens Automotive Corporation | Electromagnetic actuator upper spring assembly |
DE19958101A1 (en) * | 1999-12-02 | 2001-06-07 | Fev Motorentech Gmbh | Electromagnetic actuator with split housing |
DE10019412B4 (en) * | 2000-04-19 | 2005-03-10 | Daimler Chrysler Ag | Device with at least one electromagnet |
JP2003077722A (en) * | 2001-08-31 | 2003-03-14 | Mitsubishi Electric Corp | Method for forming laminated core and electromagnetic type valve drive |
JP4110920B2 (en) | 2002-10-25 | 2008-07-02 | トヨタ自動車株式会社 | Electromagnetically driven valve device |
JP5829166B2 (en) * | 2012-03-29 | 2015-12-09 | 住友重機械工業株式会社 | Injection molding machine |
CN102945723A (en) * | 2012-10-19 | 2013-02-27 | 中国煤炭科工集团太原研究院 | Intrinsic safety electromagnet for valve |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3110874A (en) * | 1961-01-24 | 1963-11-12 | Gen Electric | Magnetic core structure |
US4540966A (en) * | 1982-11-24 | 1985-09-10 | Albany-Chicago Corporation | Multiple magnet core unit |
US5153475A (en) * | 1991-01-08 | 1992-10-06 | Contraves Usa, Inc. | Magnetic axial force actuator construction |
US5155461A (en) * | 1991-02-08 | 1992-10-13 | Diesel Technology Corporation | Solenoid stator assembly for electronically actuated fuel injectors and method of manufacturing same |
US5339063A (en) * | 1993-10-12 | 1994-08-16 | Skf U.S.A., Inc. | Solenoid stator assembly for electronically actuated fuel injector |
-
1998
- 1998-12-02 US US09/204,376 patent/US20010040018A1/en not_active Abandoned
- 1998-12-07 DE DE69832458T patent/DE69832458T2/en not_active Expired - Fee Related
- 1998-12-07 EP EP98123223A patent/EP0921536B1/en not_active Expired - Lifetime
- 1998-12-09 JP JP10350254A patent/JPH11260639A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070261231A1 (en) * | 2006-05-09 | 2007-11-15 | Spang & Company | Methods of manufacturing and assembling electromagnetic assemblies and core segments that form the same |
US20070262839A1 (en) * | 2006-05-09 | 2007-11-15 | Spang & Company | Electromagnetic assemblies, core segments that form the same, and their methods of manufacture |
WO2007133399A2 (en) * | 2006-05-09 | 2007-11-22 | Spang & Company | Electromagnetic assemblies, core segments that form the same, and their methods of manufacture |
WO2007133399A3 (en) * | 2006-05-09 | 2008-01-17 | Spang & Company | Electromagnetic assemblies, core segments that form the same, and their methods of manufacture |
US10714291B2 (en) * | 2015-12-11 | 2020-07-14 | Omron Corporation | Relay |
US10964504B2 (en) | 2015-12-11 | 2021-03-30 | Omron Corporation | Relay |
EP3246926A1 (en) * | 2016-05-20 | 2017-11-22 | Melexis Technologies SA | Magnetic flux concentrator structure and method for manufacturing the same |
US10726985B2 (en) * | 2018-03-22 | 2020-07-28 | Schaeffler Technologies AG & Co. KG | Multi-stage actuator assembly |
Also Published As
Publication number | Publication date |
---|---|
JPH11260639A (en) | 1999-09-24 |
EP0921536B1 (en) | 2005-11-23 |
DE69832458D1 (en) | 2005-12-29 |
EP0921536A1 (en) | 1999-06-09 |
DE69832458T2 (en) | 2006-06-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6049264A (en) | Electromagnetic actuator with composite core assembly | |
US20010040018A1 (en) | Electromagnetic actuator with lamination stack-housing dovetail connection | |
US6157277A (en) | Electromagnetic actuator with improved lamination core-housing connection | |
US6078235A (en) | Electromagnetic actuator and housing therefor | |
US7946261B2 (en) | Electromagnetic actuator with two electromagnets comprising magnets having different forces and method of controlling an internal combustion engine valve using same | |
CA1272084A (en) | Electromagnetically-actuated positioning mechanisms | |
US6118366A (en) | Electromagnetic actuator with split housing assembly | |
US5903070A (en) | Electromagnetic actuator having a slender structure | |
US7156057B2 (en) | Electromagnetic actuator for controlling a valve of an internal combustion engine and internal combustion engine equipped with such an actuator | |
EP0921280B1 (en) | Electromagnetic actuator with stamped steel housing | |
JP2001126921A (en) | Core for electromagnetic actuator | |
US20080079521A1 (en) | Electromagnetic Actuator Comprising An Electromagnet With A Coil Secured To A Permanent Magnet, And A Method Of Assembling Such An Actuator | |
US6543477B2 (en) | Electromechanical actuator | |
US20050076866A1 (en) | Electromechanical valve actuator | |
EP0923090B1 (en) | Electromagnetic actuator with detached lower collar to align with cylinder head bore | |
JP2006512039A (en) | Electromagnetic valve actuator with a permanent magnet and a double coil | |
EP0967623B1 (en) | Electromagnetic actuator with molded connector | |
US7305943B2 (en) | Electromagnet assembly for electromechanical valve actuators | |
US7305942B2 (en) | Electromechanical valve actuator | |
US7900885B2 (en) | Electromagnetic actuator with permanent magnets which are disposed in a V-shaped arrangement | |
US8085119B2 (en) | Flexible electromagnetic valve actuator modeling and performance | |
JP3572447B2 (en) | Electromagnetic valve device for internal combustion engine | |
JP5394230B2 (en) | Electromagnetic actuator with electromagnetically optimized V-shaped permanent magnet | |
JP5394230B6 (en) | Electromagnetic actuator with electromagnetically optimized V-shaped permanent magnet |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SIEMENS AUTOMOTIVE CORPORATION, MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BULGATZ, DENNIS;REEL/FRAME:009750/0567 Effective date: 19990127 |
|
AS | Assignment |
Owner name: SIEMENS AUTOMOTIVE CORPORATION, MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BULGATZ, DENNIS;REEL/FRAME:010403/0878 Effective date: 19991013 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |