US3900822A - Proportional solenoid - Google Patents

Proportional solenoid Download PDF

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Publication number
US3900822A
US3900822A US450310A US45031074A US3900822A US 3900822 A US3900822 A US 3900822A US 450310 A US450310 A US 450310A US 45031074 A US45031074 A US 45031074A US 3900822 A US3900822 A US 3900822A
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US
United States
Prior art keywords
hub
armature
base
coil
shaft
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
US450310A
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English (en)
Inventor
David R Hardwick
George T Coors
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.)
LUCAS LEDEX Inc
Original Assignee
Ledex Inc
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 Ledex Inc filed Critical Ledex Inc
Priority to US450310A priority Critical patent/US3900822A/en
Priority to CA217,075A priority patent/CA1016585A/en
Priority to DE2502714A priority patent/DE2502714C3/de
Priority to BE153131A priority patent/BE825268A/xx
Priority to GB5180/75A priority patent/GB1498992A/en
Priority to FR7503996A priority patent/FR2264372B1/fr
Priority to JP50019672A priority patent/JPS5842605B2/ja
Priority to CH314675A priority patent/CH594968A5/xx
Application granted granted Critical
Publication of US3900822A publication Critical patent/US3900822A/en
Assigned to LUCAS LEDEX, INC. reassignment LUCAS LEDEX, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE JUNE 1, 1988 Assignors: LEDEX, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01F7/13—Electromagnets; Actuators including electromagnets with armatures characterised by pulling-force characteristics
    • 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
    • H01F7/1607—Armatures entering the winding
    • 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
    • H01F2007/085—Yoke or polar piece between coil bobbin and armature having a gap, e.g. filled with nonmagnetic material

Definitions

  • CL is achieved providing the bearing housings and ad- Int- Cl. jacent bases matching tapers to re ld of Search 335/268, 258, 55, turn or eliminate side loads on the armature shaft by 335/262, 263, 174/15 310/16 assuring concentricity.
  • the solenoids also have improved heat transfer by the use of a coil form in the References Clted shape of a spool or bobbin made of aluminum, in UNITED STATES PATENTS which one of the radial end walls is provided with a 854,741 5/1907 Hewlett 335/256 channel of groove in which the magnet leads and the 33 9 7 Ha
  • An important object of the invention is the provision of double and single-acting proportional solenoids incorporating cone-like pole piece members, having an improved efficiency and a construction for maintenance of concentricity of the parts. Efficiency is enhanced by assuring an optimum rate of heat transfer from the coil forms or bobbins to the adjacent contacting structures.
  • the bobbins are preferably formed of high heat conductivity, non-ferrous material, preferably aluminum, although copper or aluminum filled nylon may be used. Where an aluminum bobbin is employed the surface is preferably hard anodized to provide a dielectric or insulating coating.
  • the bobbin design employed in the present invention is one which provides a direct path for this heat to flow off to the base and to the hub of the solenoid, to minimize temperature rise and to obtain more force.
  • a further feature of the invention resides in an electric coil construction which includes a circumferential channel or groove at the outer surface of one of the bobbin end walls, thus forming a space within which the lead-in wires may be joined to the magnet wire, permitting full and unobstructed surface contact at the end of the bobbin, and thus eliminating the usual air gap,
  • high temperature grease such as silicone grease, is applied to the contacting surfaces of the coil to provide continuity of contact and optimum heat transfer.
  • the heat transfer efficiency is enhanced by the provision of mounting brackets which are arranged to receive the heat from the bases as well as from the hub and transfer it outwardly to a mounting surface, so that the heat is removed in a continuous manner.
  • the mounting brackets are made of aluminum and, in the double acting enbodiment, are in direct heat transfer relation to the opposite bases.
  • one bracket engages a base while the other bracket is in direct engagement with the hub.
  • the heat flows out of the coil through paths which are provided by the hub, the bases, and the cylindrical cases within whichthe coils are received.
  • the bases in the double acting embodiment are provided with internal coning and mating tapers come into full engagement by compressing the gasket material.
  • An important object of the invention is the provision of either double or single acting proportional solenoids which are of novel design and which particularly assure accurate centering of a movable armature and which provide for improved heat dissipation from the coil.
  • a more particular object of the invention is the provision of an improved coil assembly for solenoids in which there is provided a groove or recess at one end wall of the bobbin or coil form within which the electrical connections may-be made, while providing for direct flow of heat from the end walls of the bobbin into a surrounding structure.
  • Another particular object of the invention is the provision of a solenoid base and bearing housing provided with mating cone-shaped tapers to assure concentricity.
  • FIG. 1 is a perspective view of a double acting solenoid according to this invention
  • FIG. 2 is a longitudinal section through the solenoid of FIG. 1;
  • FIG. 3 is an exploded perspective view showing the relation of one of the bases, the mounting brackets and the adjacent end wall;
  • FIG. 4 is an elevation, partially in section, of the bobbin or spool
  • FIG. 5 is an end elevation of the bobbin of FIG. 4, partially in section, with the sectioned portion looking generally along the line 5-5 of FIG. 4;
  • FIG. 5A is an enlarged fragmentary detail of FIG. 5 showing the magnet wires entering the groove
  • FIG. 5B is another enlarged detail of the coil form of the bobbin showing the lead-in wires entering the groove;
  • FIG. 6 is a transverse section through a single-acting solenoid according to this invention.
  • FIG. 7 is a fragmentary detail of a modification of the armature and pole pieces.
  • FIGS. 1-3 An embodiment of the invention as applied to a double-acting proportional solenoid is illustrated generally at 10 in FIGS. 1-3.
  • This embodiment includes a pair of identical sleeve-like cylindrical cases 12 which are formed of ferro-magnetic material.
  • the cases 12 are positioned on axially opposite sides of an annular hub 14.
  • the hub 14 is formed with a central radial body portion 15 and a pair of axially extending sleeve portions 16.
  • the inner ends of the cases are in heat transfer abutment with the adjacent radial faces of the body portion 15, as shown in FIG. 2.
  • the hub 14 is also formed of ferro-magnetic material, and the sleeve portions 16 define an armature-receiving bore or opening therethrough.
  • a pair of identical bases 20 are also formed of ferromagnetic material and are provided with disc'shaped bodies 21.
  • the bodies 21 have radially inwardly-facing surfaces which abut against the outer ends of the cases in heat transfer relation.
  • Each base terminates in an inner radially-tapered cone-shaped pole portion 22.
  • the pole portion 22 is offset from the body 21 inwardly toward the adjacent sleeve portion 16 of the hub.
  • the apex 22' of each of the bases 20 is spaced axially from the adjacent terminal end of a sleeve portion 16 by a substantial gap 23 to reduce leakage.
  • only the outer surface of the pole portion 22 is tapered, while the inside surface thereof defines a cylindrical opening which has substantially the same inside diameter as the opening defined by the sleeve portion 16 of the hub 14, although it is not essential that these inside diameters be precisely the same.
  • a pair of identical electrical coil assemblies are employed which are positioned symmetrically on either side of the radial body portion 15 of the hub 14.
  • the electrical coil assemblies each includes a generally spool-shaped coil form or bobbin 30.
  • the bobbins are formed of non-magnetic material and have an inside diameter proportioned to be received over one of the sleeve portions 16 in the axial space between the radial faces of the base and hub.
  • the construction of the bobbins 30 is described in further detail in connection with FIGS. 4 and 5.
  • An electrical coil 32 is wound on each bobbin 30 and the outside diameter of the coil is a close fit with the inside diameter of the associated case 12.
  • An axially-extended cylindrical armature 35 is received within the armature openings formed by the sleeve portions 16 and the pole portion 22.
  • the armature is also made of a suitable ferro-magnetic material, and has a length which is slightly greater than the spaced-apart distances of the bases as defined by the base portions 22, so that when one end of the armature 35 is fully telescoped Within one of the conical base portions 22, the other end is just entering the opposite base portion at the apex 22 thereof.
  • the sleeve portions 16 of the hub 14 cooperate with the armature 35 to provide a long, non-working air gap.
  • the armature 35 is mounted for axial movement within the solenoid on a central support shaft 40.
  • the shaft is received within low-friction bearings 42 mounted in identical combined solenoid end walls and bearing housings 45.
  • the bearing housings 45 cooperate with the bases 20 in a special way to assure concentricity of the armature with respect to the bases.
  • a radially constant-clearance air gap is maintained about the armature 35 with respect to the bases and the hub, although a different clearance may be provided between the armature and the bases on the one hand and between the armature and the hub on the other hand.
  • the housing 45 is provided with an inwardly extending portion 46, the outer surface 48 being defined by a coneshaped taper which precisely mates with a matching inside cone-shaped tapered surface formed on each base 20.
  • the matching surfaces 48 and 50 (FIG. 3) 3) are interfitted, the shaft 40 is held precisely in concentric relation with respect to the cylindrical opening in the tapered base portion 22.
  • the inter-fitting and matching tapers defined on each of the bearing housings and bases assure an alignment condition which is not subject to being knocked out of alignment by usage or rough handling.
  • Cushion washers 52 may be placed at the inside faces of the bearing housings to absorb any shock of contact by the armature.
  • each bearing housing and its associated base there is an axial clearance space between each bearing housing and its associated base.
  • Aluminum mounting brackets 55 are received in these spaces, and they are provided with a central opening 56 as shown in FIG. 3 through which the conical extended portion of the bearing housings 45 is received.
  • the brackets 55 are terminated in outwardly turned legs 58 forming mounting feet.
  • the bearing housings 45 are assembled to the brackets 55 by threaded screws 60.
  • a gasket 62 is interposed between the radial inside wall of the housing 45 and the adjacent flat surface of the bracket 55.
  • tie bolts 65 extend externally of the cases 12 and hub between the opposite mounting brackets to retain the entire assembly by urging the mounting brackets tightly into abutment with the outside radial surfaces of the adjacent bases.
  • the brackets 55 thus have optimum direct surface contact with the bases to receive heat therefrom and conduct the same away to the mounting structure.
  • the gaskets 62 permit the matching tapers on the base and the bearing housing to fully mate with each other, by compression of the gasket material, when the screws 60 are tightened.
  • the invention provides for improved heat flow characteristics from the coil 32 and the bobbins 30, and to this end, the bobbins 30 are preferably made of high heat conductive non-ferrous metal, such as aluminum.
  • the outside radial surface of one end of each bobbin is in abutment with the adjacent radial surface of the hub 14, and the opposite outside radial surface of the bobbin 30 is in full abutment with the adjacent inside radial surface of the base 20.
  • the inside cylindrical surface of the bobbin is formed as a close fit on the outside of the sleeve portion 16 of the hub 14.
  • a high temperature heat-conductive or heat transfer material 70 such as a silicone compounded grease.
  • a silicone compounded grease is semisolid mixtures of silicone fluids and thickeners or inert fillers which have an ability to maintain their viscosity or consistency over wide temperature ranges without melting and running away, smoking, charring or solidifying.
  • Particularly suitable materials for this purpose consist of silicone compounds G-640 and G-64l of General Electric Company, Silicone Products Department, Waterford, NY.
  • the compound may also be applied at the mutually contacting radial faces of the cases 12 and the hub and bases.
  • the compound 70 thus eliminates any air gaps particularly between the coil as sembly and the adjacent contacting components to provide for continuity and improved heat conductivity.
  • the heat from each of the bobbins may flow directly to the adjacent base 20 through one radial end of the bobbin. Also, additional heat paths are provided. Thus, the heat may flow directly outwardly to the case 12 and then through the base to the mounting brackets 55. The radial flat engagement of the ends of the case with the base and hub provide for optimum heat transfer. Also, since a substantial inner portion of the bobbin is received directly on a sleeve portion 16, a good deal of the heat will be thereby transferred to the hub 14, and the mechanical connection between the hub 14 and the adjacent case 12 permits the heat to be transferred from the hub to the case, and again through the base to the mounting bracket. The heat thus may flow, in the double acting embodiment, in either direction depending upon temperature differential. For example. if one of the two electrical coil assemblies is in use, it is apparent that paths are provided so that the heat may flow therefrom in either direction into the opposite mounting brackets, again depending upon temperature differential.
  • the solenoid construction includes a specially formed bobbin as shown in FIGS. 4 and 5, by means of which electrical connections are made to the coil while maintaining full face contact at both ends thereof.
  • the inside radial wall of the bobbin 30 is provided with a circumferential groove or channel 82 to receive the leads of the winding 32 and to receive the external power leads 85 and to provide a space for the electrical connections. Since the channel 82 is formed in the outer surface of the wall 80 it does not adversely affect the conduction of heat along the bobbin and through the ends thereof, and since the electrical connections are made within the channel, the lead wires are not brought out through the bobbin ends, as in conventional construction, which would result in an air gap. Also, the channel 82 provides mechanical protection for the lead-in wires and for the magnet wires.
  • the inside magnet wire 86 is brought into the channel 82 through an opening 87 extending to the inside surface of the bobbin, and this lead may be dressed along an outwardly tapered wall 88 into the groove 82.
  • the outside magnet wire 89 may be brought into the groove 82 through a shallow cut 90 and turned in the opposite direction.
  • the lead-in wires 85 are shown in FIG. 5B as being brought in at the top of the bobbin adjacent the channel 82, and to turn in opposite directions and to make electrical connections with the magnet wires 86 and 89 entirely within the dimensions of the channel 82.
  • the cases 12 are formed with shallow axial slots (FIG. 2) providing access openings for the wires 85.
  • the bobbin 30 is preferably hard-anodized over its entire surface to form an electrical insulation coating.
  • the invention is applicable to a single-acting solenoid as well as a double-acting solenoid, by utilizing many of the same parts which have been described in connection with FIGS. 2 and 4.
  • a modified hub 14A is employed which may be formed from the same material as the hub 14 except that the sleeve portion 16A extends only in one direction, the remainder of the hub being of constant thickness to provide a low leakage flux path.
  • the inside taper 50A is formed on the inside of the modified hub 14A to receive the corresponding taper 48 of the adjacent bearing housing 45, to assure alignment for the shaft 40A.
  • the modified armature 35A carried on the shaft is, of course. shorter as it cooperates only with one base 20.
  • a return spring may be mounted on the extended end of the shaft 40A against the outside surface of the housing 45A to resist the movement of the armature 35A, in a single-acting unit.
  • FIG. 7 A further modification which may be applied to either a single or double-acting solenoid version is shown in FIG. 7 in which the conically tapered portion of the pole is applied in the armature 135 as shown at 135A, and in which the base 120 is formed with a non-tapered cylindrical pole portion 136. All other parts may remain as described above.
  • the electrical coils may be operated in an open loop condition, or may be operated in a closed loop using the control circuit disclosed and claimed in the copending application of Myers, entitled Solenoid Servomechanism, Ser. No. 439,324, filed Feb. 4, 1974, and assigned to the same assignee as this invention.
  • each section of the cone saturates directly across from the armature.
  • the shape or slope of the force-stroke curve is determined by the angle and slope of the cone, and the amount of energy produced is a function of the rate of change of area in the cone.
  • the ID. of the hub 14 be positioned and maintained in a concentric relation with respect to the armature 35 and the bases, to thus provide a constant air gap around the armature. This may be accomplished by the assembly of the bases and the hub on a precision mandrel. The concentric relation of the hub and bases is then maintained by the tie bolts 65 which apply a compressive force to the bases 20, this compressive force being transmitted through the cases 12 and to the radial portion 15 of the hub 14. The tie bolts 65 firmly clamp the bases and the hub 14 in the predetermined concentric relation.
  • the bearing housings 45 may be attached or removed by the screws 60 without disturbing the assembly of the base, cases and hub.
  • the gaskets 62 assure proper mating of the tapers and absorb the shock of rough handling or the like as may be applied to the mounting brackets 55. If it should be necessary to remove or reassemble the housings 45, they are automatically aligned into proper concentric relation by reason of the mating tapers.
  • An important advantage of the structure described above is that the tolerance and concentricity between the LD and the CD. of the hub, bases and bearing housings can be libera].
  • the heat formed in the electrical coils is generally concentrated about the inside turns of the coil, and the improved bobbin or coil forms of this invention thus provide direct paths for this heat to flow from the bobbin, as described.
  • the channels 82 provide mechanical isolation for the magnet wires and lead-in wires and helps prevent shorting at the connections.
  • the ends of the spool make direct heat transfer contact with the adjacent structure. The contact about the bobbin and the coil with the adjacent structure is enhanced by the use of the high temperature grease at the contacting surfaces.
  • coil forms or bobbins are shown as having a completely circumferential channel or groove 82, it will be appreciated that wire-receiving grooves or channels formed in, or by, one of the end walls need not extend completely around the wall. In some instances, it may be desirable to provide channels of only limited arcuate length, sufficient to provide a mechanical recess for the lead-in wires and for the ends of the magnet wires, and to provide a region within which the electrical connections may be made. Further, it is preferred to position the somewhat wider channel end of the coil form adjacent the hub, which places the thinner opposite end wall of the coil form adjacent the base, thus providing a more direct heat transfer relation between the electrical coil itself and the base.
  • proportional solenoid embodiments of the invention may be useful merely as long-stroke solenoids in conventional applications, where a load is to be moved over a substantial distance and where the usual non-linear force curve of a conventional solenoid is undesirable.
  • the combination comprising an annular hub having an abutment portion defining a radial wall and a cylindrical sleeve portion, a base axially; spaced from said hub, means on said base forming an annular pole portion and having means defining a second radial wall in axially spaced relation to said hub wall, a cylindrical axially extended armature, meansmounting said armature for axial movement within said hub, an electrical coil assembly including a spool-shaped coil form made essentially of high heat conductive material, said coil form having an inside surface received on said hub sleeve portion and having radial end faces in respective heat transferring abutment with said hub and base walls, an electrical coil wound on said form, and one end of said coil form having means defining a radially outwardly opening channel proportioned to receive the magnet wire of said coil and to receive the external power leads therein providing a space for electrical connection with said coil wires.
  • a proportional solenoid comprising an annular hub having an abutment portion defining a radial wall, a base axially spaced from said hub, means on said base forming an annular pole portion extending axially toment with said hub and base walls, an electrical coil' wound on said form, said form having means therein defining a circumferential outwardly-spacing channel formed in one end of said form and proportioned to receive the magnet wire of said coil and to receive the external power leads thereon providing a space for electrical connections with said coil wires, and high temperature grease at the interfaces between said coil form and said hub and base to eliminate air gaps and to improve the heat transfer rate from said coil assembly.
  • a double acting proportional solenoid comprising a hub having a symmetrically annular sleeve portion and a generally centrally positioned radial portion, a pair of electrical coil assemblies mounted on said sleeve portion respectively on opposite axial sides of said radial portion, a pair of axially-spaced bases having radial body portions in abutment with one of said coil assemblies, and each said base having an inwardlyextending annular tapered pole portion terminating in an apex spaced from said hub sleeve portion forming an air gap therebetween, a cylindrical armature mounted within said hub having opposite ends in interfittin g relation to said pole portions so that selective energization of either of said coil assemblies will create a force tending to urge said armature axially in one direction or the other with respect to said bases, means on said armature defining an axially extending shaft, means mounting said armature shaft concentrically on said bases including .a correspondiing pair of bearing housings, means on said housing

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)
  • Magnetically Actuated Valves (AREA)
US450310A 1974-03-12 1974-03-12 Proportional solenoid Expired - Lifetime US3900822A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US450310A US3900822A (en) 1974-03-12 1974-03-12 Proportional solenoid
CA217,075A CA1016585A (en) 1974-03-12 1974-12-30 Proportional solenoid
DE2502714A DE2502714C3 (de) 1974-03-12 1975-01-23 Elektromagnet
GB5180/75A GB1498992A (en) 1974-03-12 1975-02-06 Proportionally actuating solenoid
BE153131A BE825268A (fr) 1974-03-12 1975-02-06 Electro-aimant
FR7503996A FR2264372B1 (is") 1974-03-12 1975-02-07
JP50019672A JPS5842605B2 (ja) 1974-03-12 1975-02-17 デンキテキソレノイド
CH314675A CH594968A5 (is") 1974-03-12 1975-03-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US450310A US3900822A (en) 1974-03-12 1974-03-12 Proportional solenoid

Publications (1)

Publication Number Publication Date
US3900822A true US3900822A (en) 1975-08-19

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US450310A Expired - Lifetime US3900822A (en) 1974-03-12 1974-03-12 Proportional solenoid

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US (1) US3900822A (is")
JP (1) JPS5842605B2 (is")
BE (1) BE825268A (is")
CA (1) CA1016585A (is")
CH (1) CH594968A5 (is")
DE (1) DE2502714C3 (is")
FR (1) FR2264372B1 (is")
GB (1) GB1498992A (is")

Cited By (42)

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US3970981A (en) * 1975-05-08 1976-07-20 Ledex, Inc. Electric solenoid structure
FR2458934A1 (fr) * 1979-06-05 1981-01-02 Polaroid Corp Moteur lineaire
US4253493A (en) * 1977-06-18 1981-03-03 English Francis G S Actuators
US4282501A (en) * 1979-08-23 1981-08-04 Ledex, Inc. Bi-directional linear actuator
US4320371A (en) * 1980-07-14 1982-03-16 Westinghouse Electric Corp. Tractive solenoid device
DE3200014A1 (de) * 1981-01-09 1982-07-29 Shoketsu Kinzoku Kogyo K.K., Tokyo Hubmagnet-betaetigungseinrichtung
US4438418A (en) 1982-07-19 1984-03-20 Mac Valves, Inc. Low-wattage solenoid
US4521757A (en) * 1982-08-09 1985-06-04 Eaton Corporation High speed electromagnetic mechanical switch
US4539542A (en) * 1983-12-23 1985-09-03 G. W. Lisk Company, Inc. Solenoid construction and method for making the same
US4553732A (en) * 1984-02-13 1985-11-19 Brundage Robert W Solenoid controlled flow valve
US4604600A (en) * 1983-12-23 1986-08-05 G. W. Lisk Company, Inc. Solenoid construction and method for making the same
USRE32644E (en) * 1984-02-13 1988-04-12 Robert W. Brundage Solenoid controlled flow valve
USRE32783E (en) * 1983-12-23 1988-11-15 G. W. Lisk Company, Inc. Solenoid construction and method for making the same
US4790353A (en) * 1982-08-09 1988-12-13 Eaton Corporation Electromagnetic hydraulic valve operator
USRE32860E (en) * 1983-12-23 1989-02-07 G. W. Lisk Company, Inc. Solenoid construction and method for making the same
US4944328A (en) * 1983-12-21 1990-07-31 Brundage Robert W Solenoid controlled valve
US4954799A (en) * 1989-06-02 1990-09-04 Puritan-Bennett Corporation Proportional electropneumatic solenoid-controlled valve
EP0433595A1 (de) * 1989-12-22 1991-06-26 Karl Dungs GmbH & Co. Gasarmatur
WO1994010695A1 (fr) * 1992-10-30 1994-05-11 Alliedsignal Europe Services Techniques Dispostif de commande electromagnetique de vanne
US5407174A (en) * 1990-08-31 1995-04-18 Puritan-Bennett Corporation Proportional electropneumatic solenoid-controlled valve
WO1995027134A1 (en) * 1994-03-31 1995-10-12 Siemens Electric Limited Egr system having fast-acting egr valve
WO1996009636A1 (en) * 1994-09-20 1996-03-28 Asea Brown Boveri Ab Operating device for circuit breakers
US5785298A (en) * 1996-04-15 1998-07-28 Teknocraft, Inc. Proportional solenoid-controlled fluid valve assembly
EP0844637A3 (de) * 1996-11-22 2000-11-22 Siemens Aktiengesellschaft Elektrodynamischer Antrieb, insbesondere für Hochspannungsschaltgeräte
US6182942B1 (en) * 1995-12-01 2001-02-06 Microhydraulics, Inc. Actuator
EP1128401A3 (en) * 2000-02-24 2002-05-22 Delphi Technologies, Inc. Magnettically-efficient solenoid for a linear actuator
US20020079472A1 (en) * 1996-04-15 2002-06-27 Kumar Viraraghavan S. Proportional solenoid-controlled fluid valve having compact pressure-balancing armature-poppet assembly
US20020093408A1 (en) * 2001-01-18 2002-07-18 Ayumu Morita Electromagnet and actuating mechanism for switch device, using thereof
US6512436B2 (en) * 1999-12-22 2003-01-28 Honda Giken Kogyo Kabushiki Kaisha Electromagnetic actuator
US6604726B2 (en) 1996-04-15 2003-08-12 Teknocraft, Inc. Proportional solenoid-controlled fluid valve assembly without non-magnetic alignment support element
US20030222534A1 (en) * 2002-05-31 2003-12-04 Xu Yao Hui Force motor with increased proportional stroke
US20040257185A1 (en) * 2003-06-09 2004-12-23 Borgwarner Inc. Variable force solenoid
US20050145812A1 (en) * 2003-12-31 2005-07-07 Kumar Viraraghavan S. Solenoid valve and poppet assembly
US20070210020A1 (en) * 2003-12-13 2007-09-13 Lee-Ho Choi Structure for racking substrates
US20100186719A1 (en) * 2009-01-26 2010-07-29 Caterpillar Inc. Self-guided armature in single pole solenoid actuator assembly and fuel injector using same
CN104584151A (zh) * 2012-08-17 2015-04-29 罗伯特·博世有限公司 用于促动装置的衔铁
EP2854143A4 (en) * 2012-05-21 2016-01-27 Mitsubishi Electric Corp ELECTROMAGNETIC DEVICE AND SWITCHING DEVICE WITH THIS ELECTROMAGNETIC DEVICE
US20160118174A1 (en) * 2013-06-28 2016-04-28 Hydac Electronic Gmbh Electromagnetic actuating apparatus
US20160169403A1 (en) * 2014-12-15 2016-06-16 Continental Automotive Gmbh Coil assembly and fluid injection valve
DE102015102066A1 (de) * 2015-02-13 2016-08-18 Hilite Germany Gmbh Zentralaktuator für einen Schwenkmotorversteller einer Nockenwelle
DE102015003672A1 (de) * 2015-03-20 2016-09-22 Hydac Electronic Gmbh Betätigungsvorrichtung
US10605127B2 (en) 2016-03-14 2020-03-31 ECO Holding 1 GmbH Hydraulic valve for a cam phaser

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DE3200014A1 (de) * 1981-01-09 1982-07-29 Shoketsu Kinzoku Kogyo K.K., Tokyo Hubmagnet-betaetigungseinrichtung
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WO1994010695A1 (fr) * 1992-10-30 1994-05-11 Alliedsignal Europe Services Techniques Dispostif de commande electromagnetique de vanne
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US5785298A (en) * 1996-04-15 1998-07-28 Teknocraft, Inc. Proportional solenoid-controlled fluid valve assembly
US7028978B2 (en) 1996-04-15 2006-04-18 Kumar Viraraghavan S Proportional solenoid-controlled fluid valve having compact pressure-balancing armature-poppet assembly
US20020079472A1 (en) * 1996-04-15 2002-06-27 Kumar Viraraghavan S. Proportional solenoid-controlled fluid valve having compact pressure-balancing armature-poppet assembly
US6715732B2 (en) 1996-04-15 2004-04-06 Teknocraft, Inc. Proportional solenoid-controlled fluid valve assembly
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EP0844637A3 (de) * 1996-11-22 2000-11-22 Siemens Aktiengesellschaft Elektrodynamischer Antrieb, insbesondere für Hochspannungsschaltgeräte
US6512436B2 (en) * 1999-12-22 2003-01-28 Honda Giken Kogyo Kabushiki Kaisha Electromagnetic actuator
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US20020093408A1 (en) * 2001-01-18 2002-07-18 Ayumu Morita Electromagnet and actuating mechanism for switch device, using thereof
US20040217834A1 (en) * 2001-01-18 2004-11-04 Hitachi, Ltd. Electromagnet and actuating mechanism for switch device, using thereof
US6816048B2 (en) * 2001-01-18 2004-11-09 Hitachi, Ltd. Electromagnet and actuating mechanism for switch device, using thereof
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US20030222534A1 (en) * 2002-05-31 2003-12-04 Xu Yao Hui Force motor with increased proportional stroke
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US7564332B2 (en) 2003-06-09 2009-07-21 Borgwarner Inc. Variable force solenoid
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US20100186719A1 (en) * 2009-01-26 2010-07-29 Caterpillar Inc. Self-guided armature in single pole solenoid actuator assembly and fuel injector using same
US7866301B2 (en) 2009-01-26 2011-01-11 Caterpillar Inc. Self-guided armature in single pole solenoid actuator assembly and fuel injector using same
EP2854143A4 (en) * 2012-05-21 2016-01-27 Mitsubishi Electric Corp ELECTROMAGNETIC DEVICE AND SWITCHING DEVICE WITH THIS ELECTROMAGNETIC DEVICE
CN104584151A (zh) * 2012-08-17 2015-04-29 罗伯特·博世有限公司 用于促动装置的衔铁
CN104584151B (zh) * 2012-08-17 2017-10-31 罗伯特·博世有限公司 用于促动装置的衔铁
US20160118174A1 (en) * 2013-06-28 2016-04-28 Hydac Electronic Gmbh Electromagnetic actuating apparatus
US9941042B2 (en) * 2013-06-28 2018-04-10 Hydac Electronic Gmbh Electromagnetic actuating apparatus
US20160169403A1 (en) * 2014-12-15 2016-06-16 Continental Automotive Gmbh Coil assembly and fluid injection valve
DE102015102066A1 (de) * 2015-02-13 2016-08-18 Hilite Germany Gmbh Zentralaktuator für einen Schwenkmotorversteller einer Nockenwelle
US10340069B2 (en) 2015-02-13 2019-07-02 ECO Holding 1 GmbH Central actuator for cam phaser
DE102015003672A1 (de) * 2015-03-20 2016-09-22 Hydac Electronic Gmbh Betätigungsvorrichtung
EP3070721A3 (de) * 2015-03-20 2016-12-28 HYDAC Electronic GmbH Betätigungsvorrichtung
US10605127B2 (en) 2016-03-14 2020-03-31 ECO Holding 1 GmbH Hydraulic valve for a cam phaser

Also Published As

Publication number Publication date
DE2502714A1 (de) 1975-09-25
DE2502714B2 (de) 1979-05-17
JPS50122665A (is") 1975-09-26
BE825268A (fr) 1975-05-29
GB1498992A (en) 1978-01-25
FR2264372B1 (is") 1981-09-25
DE2502714C3 (de) 1980-01-24
CA1016585A (en) 1977-08-30
JPS5842605B2 (ja) 1983-09-21
CH594968A5 (is") 1978-01-31
FR2264372A1 (is") 1975-10-10

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