• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    LINEAR ELECTROMAGNETIC DEVICE The present invention relates to a linear electromagnetic device (200), such as an inductor (202), a transformer or the like, may include a core, in which a magnetic flux (106) and (108) can be generated. The device may also include an opening (208) through the core (204). The device may additionally include a primary conductor (212), received at the opening (208) and extending through the core (204). The primary conductor (212) can include a substantially square or rectangular cross section (206). An electric current, flowing through the primary conductor (212), generates a magnetic field around the primary conductor (212), in which substantially the entire magnetic field is absorbed by the core (204), to generate the magnetic flux in the core (204) .
    公开号:BR102013018176B1
    申请号:R102013018176-5
    申请日:2013-07-16
    公开日:2020-12-08
    发明作者:James L. Peck
    申请人:The Boeing Company；
    IPC主号:
    专利说明:

    FIELD
    [0001] The present invention relates to electromagnetic devices, such as transformers and electrical inductors, and, more particularly, to a linear electromagnetic device, such as a linear transformer, a linear inductor or a similar linear device. BACKGROUND
    [0002] Figure 1 is an example of an electromagnetic device 100, which can be an inductor or transformer. Electromagnetic device 100 includes several electrical conductors, wires or windings 102 coated or wound around a ferromagnetic core 104. Core 104 is an electromagnetic material and is magnetized in response to an electric current flowing through windings 102. A magnetic flux, illustrated by the dashed lines 106 and 108, it is also generated by the electromagnetic device 100, in response to the electric current flowing through the windings 102. As illustrated in Figure 1, the magnetic flow 106 and 108 will flow in a route through the core 100 and through the free space in around the electromagnetic device 100. Consequently, the magnetic flux 106 and 108, flowing in the free space around the electromagnetic device 100, does not produce any coupling or transfer of useful energy and is inefficient. Because of this inefficiency, these electromagnetic devices, inductors, transformers and the like of the prior art generally require larger and heavier electromagnetic cores and additional windings to provide a desired energy conversion or transfer. SUMMARY
    [0003] According to one embodiment, a linear electromagnetic device, such as a linear transformer, linear inductor or similar linear device, can include a core, in which a magnetic flux can be generated. The device may also include an opening through the core. The device may additionally include a primary conductor, received at the opening and extending through the core. The primary conductor may include a substantially square or rectangular cross section. An electric current, flowing through the primary conductor, generates a magnetic field around the primary conductor, in which substantially the entire magnetic field is absorbed by the nucleus, to generate the magnetic flux in the nucleus.
    [0004] According to another embodiment, a linear electromagnetic device can include a core, in which a magnetic flux can be generated. The electromagnetic device may also include an opening through the core and a primary conductor received at the opening and extending through the core. The primary conductor may include a substantially square or rectangular cross section. An electric current, flowing through the primary conductor, generates a magnetic field around the primary conductor, in which substantially the entire magnetic field is absorbed by the nucleus, to generate the magnetic flux in the nucleus. The electromagnetic device may also include a secondary conductor, received at the opening and extending through the core. The secondary conductor may include a substantially square or rectangular cross section, to receive an electromotive force transmitted by the core.
    [0005] According to another embodiment, a process for increasing a magnetic flux from an electromagnetic device may include providing a core, in which a magnetic flux can be generated. The process may also include extending a primary conductor through an opening in the core. The primary conductor may include a substantially square or rectangular cross section. The process may also include passing an electric current through the primary conductor, to generate a magnetic field around the primary conductor, in which substantially the entire magnetic field is absorbed by the nucleus, to generate a magnetic flux in the nucleus.
    [0006] Other aspects and characteristics of the present invention, defined only by the claims, will become evident to those skilled in the art by reviewing the detailed non-limiting description presented below of the invention, together with the attached figures. BRIEF DESCRIPTION OF THE VARIOUS VIEWS OF THE DRAWINGS
    [0007] The detailed description presented below of the embodiments refers to the attached drawings, which illustrate the specific embodiments of the invention. Other embodiments, having different structures and operations, do not deviate from the scope of the present invention.
    [0008] Figure 1 is an example of a prior art transformer.
    [0009] Figure 2A is a perspective view of an example of an electromagnetic device, according to an embodiment of the present invention.
    [00010] Figure 2B is a top view of the electromagnetic device in Figure 2A.
    [00011] Figure 2C is a block diagram of an example of an electrical circuit including the linear inductor of Figure 1A, according to an embodiment of the present invention.
    [00012] Figure 3A is a perspective view of an example of an electromagnetic device, configured as a linear transformer, according to an embodiment of the present invention.
    [00013] Figure 3B is a block diagram of an example of an electrical circuit including the linear transformer of Figure 3A, according to an embodiment of the present invention.
    [00014] Figure 4 is a perspective view of an example of a linear inductor, according to another embodiment of the present invention.
    [00015] Figure 5 is a perspective view of an example of a linear transformer, according to another embodiment of the present invention.
    [00016] Figure 6 is an illustration of an example of a linear transformer, according to another embodiment of the present invention.
    [00017] Figure 7A is an illustration of an example of a linear transformer, according to yet another embodiment of the present invention.
    [00018] Figure 7B is a block diagram of an electrical circuit including the linear transformer, according to another embodiment of the present invention.
    [00019] Figure 8 is an illustration of an example of another linear transformer, according to an embodiment of the present invention.
    [00020] Figure 9 is a flow chart of an example of a process for increasing a magnetic flux from an electromagnetic device, linear transformer, according to an embodiment of the present invention. DESCRIPTION
    [00021] The detailed description presented below of the embodiments refers to the accompanying drawings, which illustrate the specific embodiments of the invention. Other embodiments, having different structures and operations, do not deviate from the scope of the present invention. Similar reference numbers can refer to the same element or component in the different drawings.
    [00022] According to an embodiment of the present invention, a linear transformer is a magnetic device, in which one or more linear primary electrical conductors and one or more secondary electrical conductors or wires pass through a magnetic core. The core can be one piece and there is no need for turns of the primary and secondary electrical conductors. Although the core may be one-piece, the single-piece core may be formed of several sheets or stacked laminates. An alternating current can be conducted by the primary conductor. A magnetic current flow in the primary conductor is absorbed by the core. When the current in the primary conductor decreases, the core transmits (desorbes) an electromotive force on the secondary wires. A characteristic of the linear transformer is the linear passage of the primary and secondary conductors through the core. One core can be used as a standalone device, or a series of two or more cores can be used when longer linear exposure is required. Another characteristic of this transformer is that the entire magnetic field, or at least a substantial part of the magnetic field, generated by the current in the primary conductor, is absorbed by the core, and desorbed in the secondary conductor. The transformer core can be dimensioned or include dimensions, so that substantially the entire magnetic field generated by the current is absorbed by the core, and so that the magnetic flux is substantially completely contained with the core. This forms a highly efficient transformer with very low copper losses, high energy transfer efficiency, low thermal emission and very low radiation emissions. In addition, the linear transformer has a volume and weight 50% less than in the existing configurations.
    [00023] Figure 2A is a perspective view of an example of an electromagnetic device 200, according to an embodiment of the present invention. The electromagnetic device 200, illustrated in Figure 2A, is configured as a linear inductor 202. The linear inductor 202 may include a core 204. The core 204 may include several plates 206 or laminations stacked together. The 206 plates can also be made of a silicon - steel alloy, a nickel - iron alloy, or other metallic material, capable of generating a magnetic flux similar to that described in this specification. For example, core 204 may be a nickel - iron alloy, including about 20% by weight of iron and about 80% by weight of nickel. Plates 206 may be substantially square or rectangular, or may have some other geometric shape, depending on the application of the electromagnetic device and the physical medium in which the electromagnetic device 200 can be located. For example, the substantially square or rectangular plates 206 can be defined as any type of polygon, to suit a certain application.
    [00024] An opening is formed by each of the plates 206, and the openings are aligned to form an opening 208, or a passage, through the core 204, when the plates 206 are stacked together, with the plate openings in alignment between itself. The opening 208, or passageway, can be formed substantially in the center or in a central part of the core 204 and extend substantially perpendicular to a plane defined by each plate 206 of the stack of plates 206 or laminates. In another embodiment, the aperture 208 can be formed displaced from the center of a central part of the core 204, in the planes defined by each of the plates 206, for the purpose of providing a particular magnetic flux, or to satisfy certain requirements.
    [00025] An electrical conductor 210, or a wire, can be received in aperture 208 and can extend through the core 204, perpendicular to the plane of each of the plates 206. The electrical conductor 210 can be a primary conductor. In the exemplary embodiment, shown in Figure 2A, electrical conductor 210 is a plurality of electrical conductors 212, or wires. In another embodiment, electrical conductor 210 may be a single conductor.
    [00026] Referring also to Figure 2B, Figure 2B is a top view of the linear inductor 202 of Figure 1A. Opening 208 through core 204 can be an elongated groove 214. As discussed above, opening 208, or elongated groove, can be formed by a center or central part of core 204, when looking through the plane of the top plate 206. A aperture 208 or elongated groove 214 can be an equal distance from opposite sides of core 204, or, as shown in Figure 2B, elongated groove 214 can be displaced and can be closer to one side of core 204. For some applications, the aperture 208 can also be formed in a different form of elongated groove 214, depending on the application and the desired route of the magnetic flux generated in the core.
    [00027] As discussed above, electrical conductor 210 may be a plurality of primary conductors 212, which are aligned adjacent to each other, or arranged in a single line 216 within elongated groove 214. Each of conductors 212 may include a cross section substantially square or rectangular, as illustrated in Figure 2B. The substantially square or rectangular cross section can be defined as being exactly square or rectangular, or it may have rounded edges or other characteristics, depending on the application and the desired coupling or transfer of magnetic flux in the core 204, when an electric current flows through the conductors 212 The conduction 210 may also be of a single elongated ribbon conductor, extending within the elongated groove 214 and having a cross section corresponding to the elongated groove or other form of opening.
    [00028] The cross section of each primary conductor 212 can have a predetermined width "W", in a direction corresponding to an elongated dimension or length "L" of the elongated groove 214. A primary end conductor 218, at each end of the line only 216 of the conductors, is less than about half the predetermined width "W" of an end 220 of the elongated groove 214. Each conductor 212 also has a predetermined height "H". Each conductor 212 is less than half the predetermined height "H" of a side wall 222 of the elongated groove 214.
    [00029] Figure 2C is a block diagram of an example of an electrical circuit 224, including a linear inductor 226, according to an embodiment of the present invention. Linear inductor 226 can be the same as linear inductor 202 in Figures 2A and 2B. A generator 208 can be connected to linear inductor 226, to conduct an electric current through linear inductor 226. A magnetic field is generated around electrical conductor 210 (Figures 2A and 2B), or each of the plurality of electrical conductors 212, in response to electrical current flowing into the conductor or conductors. Core 204 can be sized so that substantially the entire magnetic field is absorbed by core 204 to generate a magnetic flux in core 204, as illustrated by the dashed lines 228 and 230 in Figure 2A, and the core can be sized so that the magnetic flux is substantially completely contained within the nucleus. In one embodiment, core 204 can be sized relative to the conductor or conductors and the electrical current flowing into the conductor or conductors, to absorb at least about 96% of the magnetic field, to generate the magnetic flux in the nucleus 204. The magnetic flux can there should also be at least about 96% contained within the nucleus 24. Any magnetic flux generated outside the nucleus 204 can be infinitesimally small, compared to the magnetic flux contained within the nucleus.
    [00030] Figure 3A is a perspective view of an example of an electromagnetic device in the configuration of a linear transformer 300, according to an embodiment of the present invention. Linear transformer 300 is similar to linear inductor 202 of Figure 2A, but includes a secondary conductor 302 or a plurality of secondary conductors. Consequently, the linear transformer 300 includes a core 304, in which a magnetic flux can be generated. Similar to that previously described, core 304 may include several plates or laminations 306, which can be stacked together, as illustrated in Figure 3A. Each of the plates 306 has an opening formed therein, to provide an opening 308, or passage, through the core 304. The opening 308, or passage, through the core 304 can be substantially perpendicular to a plane defined by each of the plates 306. The conductor or the secondary conductors 302 extend into the opening 308 through the core 304. The primary conductor or the various primary conductors 310 may extend adjacent the secondary conductors 302 into the opening 308 through the core 304.
    [00031] Similar to that previously described, each primary conductor 310 can have a substantially square or rectangular cross section. An electric current, flowing through the conductor or the primary conductors, generates a magnetic field around the primary conductor. The core 304 can be sized or include dimensions of width and length of the plates 306, to absorb substantially the entire magnetic field, to generate the magnetic flux, as illustrated by the dashed lines 312 and 314 in Figure 3A. Core 304 may also be dimensioned or include dimensions of width and length, so that the magnetic flux is substantially entirely contained within core 304. In one embodiment, core 304 may be dimensioned or may include dimensions of width and length of plates 306, to absorb at least about 96% of the magnetic field and at least about 96% of the magnetic flux.
    [00032] Each secondary conductor 302, extending through the core 304, may also have a substantially square or rectangular cross section, to receive an electromotive force transmitted by the core 304.
    [00033] Opening 308 through core 304 may be an elongated groove 316, similar to the elongated groove 214 in Figures 2A and 2B. The various primary conductors 310 and the various secondary conductors 302 can all be arranged adjacent to each other, in a single line in the elongated groove 316.
    [00034] A cross section of each primary conductor 310 of the various conductors and each secondary conductor 302 of the various conductors can have a predetermined width "W", in a direction corresponding to an elongated groove length 316, similar to that illustrated in Figure 2B. A primary end conductor, adjacent to one end of the elongated groove 316, is about less than half the predetermined width "W" from one end of the elongated groove 316. A secondary end conductor, adjacent to an opposite end of the groove elongated 316, is about less than half the predetermined width "W" from the opposite end of the elongated groove.
    [00035] The cross section of each primary conductor 310 and each secondary conductor 302 can have a predetermined height "H". Each primary conductor 310 and each secondary conductor 302 are about less than half the predetermined height "H" from an elongated groove side wall 316.
    [00036] Figure 3B is a block diagram of an electrical circuit 318, including a linear transformer 320, according to an embodiment of the present invention. Linear transformer 320 can be the same as linear transformer 300 in Figure 3A. A generator 322 can be connected to primary conductors 310, and a load 324 can be connected to secondary conductors 302. The voltage and current, supplied by generator 322 to linear transformer 320, are converted or transformed based on the number and characteristics of the conductors, or windings, primary and the number and characteristics of the conductors, or windings, secondary, and of the core 304.
    [00037] Figure 4 is a perspective view of an example of a linear inductor 400, according to another embodiment of the present invention. Material information 400 may be similar to linear inductor 202 in Figure 2A, except that linear inductor 400 may include two or more cores 402 and 404. Each of cores 402 and 404 has respective openings 406 and 408 formed by them. An electrical conductor 410 extends through each of openings 406 and 408. Each of openings 406 and 408 can be an elongated groove, similar to the one described above. The electrical conductor 410 can be a plurality of conductors, arranged adjacent to each other in a single line in the elongated groove, which forms each of the openings 406 and 408. Each of the various conductors can have a substantially square or rectangular cross section.
    [00038] The lamination groove or opening, by the laminated core, is typically a groove for a laminating core, to maintain the separation between magnetic flux storage and magnetic flux flows. However, two or more slots or openings can be on the same lamination or core, if the spacing is such that each area or volume of flow storage and flow flow does not interfere with an adjacent slot. The total current in each slot or opening defines the area or volume of the lamination or core for storage. The laminations or separate cores for each groove ensure that there is no interference.
    [00039] A generator 412, or a source of electrical energy, can be connected to linear inductor 400. Generator 412 can supply an electrical current to conductor 410 or conductors, to generate a magnetic field around conductor 410. The field magnetic will be substantially entirely absorbed by cores 402 and 404, to generate a magnetic field in each of cores 402 and 404.
    [00040] Figure 5 is a perspective view of an example of a linear transformer 500, according to another embodiment of the present invention. Linear transformer 500 can be the same as linear transformer 300 in Figure 3A, except that transformer 500 can include two or more cores 502 and 504. Similar to transformer 300, each of cores 502 and 504 can have an opening 506, formed by a center or substantially in a central part of the nucleus. Each opening 506 can be a substantially elongated groove.
    [00041] A primary conductor 508 and a secondary conductor 510 can extend through opening 506 in each of cores 502 and 504. Primary conductor 508 can be a single conductor or several electrical conductors, or wires, as illustrated in Figure 5, and the secondary conductor 510 may be a single conductor may also include several electrical conductors, or wires, as shown in Figure 5. Each primary conductor 508 and each secondary conductor 510 may have a substantially square or rectangular cross section, similar to conductors 212, illustrated in Figure 2B. Primary conductors 508 can be arranged adjacent to each other in a single line within the elongated groove, similar to that illustrated in Figure 2B. Secondary conductors 510 can also be arranged adjacent to each other in a single line within the elongated groove. The various secondary conductors 510 can be arranged adjacent to the primary conductors 508 on the same line, at a predetermined spacing between the various conductors. Primary and secondary conductors 508 and 510 can be arranged in the elongated groove, spaced from the sides of the groove, to provide a substantially complete magnetic coupling between conductors 508 and 510 and cores 502 and 504. Consequently, when an electrical current is passed through the conductor or the primary conductors, substantially the entire magnetic field around the primary conductor, is coupled to cores 502 and 504, to generate the magnetic flux in cores 502 and 504. Cores 502 and 504 can also be sized or include dimensions, so that at least about 96% of the magnetic flux is coupled to, or absorbed by, the cores 502 and 504. Similarly, the magnetic flux will be substantially completely, or at least about 96%, coupled to the conductor or secondary conductors 510, to generate an electric current in the conductor or secondary conductors 510.
    [00042] A generator 512 or an electrical source can be connected to the conductor or to the primary conductors 508, to apply an electric current to the primary conductor. A load 514 can be connected to the conductor or the secondary conductors 510, to receive the transformed electrical energy from the linear transformer 500.
    [00043] Figure 6 is an illustration of an example of a linear transformer 600, according to another embodiment of the present invention. Linear transformer 600 may be similar to linear transformer 300 in Figure 3A, except that transformer 600 includes several cores 602 - 612. Each of cores 602 - 612 may have an opening 614, formed by the core. Opening 614 can substantially through a center or central part of cores 602 - 612. Each opening 614 can be an elongated groove or other configuration. A conductor or primary conductors 616 and a conductor or secondary conductors 618 may pass through opening 614 in each of cores 602 - 612. All primary conductors 616 and secondary conductors 618 may have a substantially square or rectangular cross section and may be arranged in the elongated groove adjacent to each other in a single line. An electrical source 620 can be connected to the conductor or primary conductors 616, and a load 622 can be connected to the conductor or secondary conductors 618.
    [00044] Figure 7A is an illustration of an example of a linear transformer 700, according to another embodiment of the present invention. Linear transformer 700 may be similar to linear transformer 300 in Figure 3A, except that linear transformer 700 includes several cores 702 - 712. All cores 702 - 712 may have an opening 714, formed by the core. Opening 714 can be substantially through a center or central part of cores 702 - 712. Each opening 714 can be an elongated groove or other configuration. A single primary conductor 716 or several primary conductors can pass through opening 714 in each of cores 702 - 712. Primary conductor 716 can be connected to an electrical source 718.
    [00045] The linear transformer 700 can also include several secondary conductors 720, 722 and 724, for coupling a selected number of cores to a respective load 726, 728 and 730, to supply a different quantity of electrical voltage and current output for the respective loads 726, 728 and 730. For example, the secondary conductor 720 can pass through openings 714 in cores 702, 704 and 706 and can connect to load 726. Secondary conductor 722 can pass through opening 714 in cores 708 and 710 and connect to load 728. Secondary conductor 724 can pass through opening 714 in core 712 and connect to load 730.
    [00046] Each of the secondary conductors 720, 722 and 724 can be a single conductor or wire, or several conductors or wires. If secondary conductors 720, 722 and 724 include multiple conductors, the number of conductors or wires in each of the secondary conductors 720, 722 and 724 may be a different number of conductors or wires, depending on the desired voltage and current to be supplied by the secondary driver.
    [00047] Each conductor or primary conductors 716 and the conductor or secondary conductors 720, 722 and 724 may have a substantially square or rectangular cross section and may be arranged in the elongated groove adjacent to each other in a single line, similarly to the conductors 212 shown in Figure 2A.
    [00048] Figure 7B is a block diagram of an electrical circuit 732, including the linear transformer 700 of Figure 7A, according to an embodiment of the present invention.
    [00049] Figure 8 is an illustration of an example of another linear transformer 800, according to an embodiment of the present invention. The transformer 800 can also include several cores 802 - 820. Each of the cores 802 - 820 can have at least one opening 822 formed therein. At least one opening 822 can be formed in a center or central part of each of the cores 802 - 820. Each opening 822 can be a substantially elongated groove.
    [00050] A primary conductor 824 and a secondary conductor 826 can extend through each opening 822 in each of the cores 802 - 820. Primary conductor 824 can be a single conductor or wire or multiple conductors or wires. Secondary conductor 826 can be a single conductor or wire or multiple conductors or wires.
    [00051] The primary conductor 824 or each of the primary conductors and the secondary conductor 826 or each of the secondary conductors may have a substantially square or rectangular cross section and may be arranged in the opening 822 or elongated groove adjacent to each other in a single line . An electrical power source 818 can be connected to primary conductor 824, and a load can be connected to secondary conductor 826.
    [00052] Figure 9 is a flow chart of an example of a 900 process for increasing a magnetic flux from an electromagnetic device, according to an embodiment of the present invention. In block 902, at least one core can be provided, including an opening formed in the core. The opening can be formed substantially in a center or central part of the core. The core may include several laminates or stacked plates, similar to what has been described in this specification. The opening can be an elongated groove or another shape, depending on the application and the desired magnetic coupling between the core and the electrical conductors extending through the opening in the core.
    [00053] In block 904, a single primary conductor or several primary conductors can be extended through the opening. The conductors can have a substantially square or rectangular cross section, as described above. The primary conductors can be arranged adjacent to each other within the elongated groove in a single line.
    [00054] In block 906, if the electromagnetic device is a transformer, a single secondary conductor or several secondary conductors can be extended through the opening. The secondary conductor or secondary conductors can also have a substantially square or rectangular cross section. The secondary conductors can be arranged within the elongated groove in a single line. The group of secondary conductors can be arranged adjacent to the group of primary conductors on the same line, with a predetermined spacing between the groups of conductors.
    [00055] In block 908, the primary conductor or conductors can be connected to an electrical source, and if the electromagnetic device is a transformer, including secondary conductors, the secondary conductors can be connected to a load.
    [00056] In block 910, an electric current can be passed through the conductor or the primary conductors, to generate a magnetic field around the conductor or conductors. The configuration of the conductor or conductors, extending through the opening substantially in the center or in a central part of the nucleus, causes substantially the entire magnetic field, or at least about 96% of it, to be absorbed by the nucleus, to generate a magnetic flux in the nucleus. The core can also be dimensioned, so that the magnetic flux is also substantially contained within the core.
    [00057] The terminology used in this specification is for the purpose of describing particular embodiments only, and is not intended to be limiting of the invention. As used in this specification, the singular forms "one", "one", "o" and "a" are intended to include plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the terms "comprises" and / or "comprising", when used in this specification, specify the presence of characteristics, integers, steps, operations, elements and / or components indicated, but do not exclude the presence or the addition of one or more other characteristics, integers, steps, operations, elements, components, and / or their groups.
    [00058] Although the specific embodiments have been illustrated and described in this specification, those skilled in the art will consider that any provision, which is calculated to achieve the same end, may have other applications in other circumstances. This patent application is intended to cover any adaptations or variations of the present invention. The following claims are not intended to limit the scope of the invention in any way to the embodiments described in this specification.
    权利要求:
    Claims (4)
    [0001]
    1. Linear electromagnetic device comprising: a core (204), in which a magnetic flux can be generated; an opening (208) through the core, wherein the opening (208) through the core comprises an elongated groove (214); and a plurality of primary conductors (210, 212) arranged in a single row in the elongated groove (214) and extending through the core, each of the primary conductors (210, 212) including a substantially square or rectangular cross section, wherein one electric current, flowing through the primary conductor, generates a magnetic field around the primary conductor, at least one other core (404), the at least another core (404) comprising an opening (408), through which the primary conductors extend through at least one other core (404), characterized by the fact that a cross section of each primary conductor (212) of the plurality of primary conductors (212) comprises a predetermined width, in a direction corresponding to an elongated groove length, and a primary end conductor (218) at each end of the single line of primary conductors having less than about half the predetermined width of one end of the elongated groove , and the cross section of each primary conductor of the plurality of conductors comprising a predetermined height, each primary conductor having less than about half the predetermined height of a side wall of the elongated groove.
    [0002]
    2. Linear electromagnetic device according to claim 1, characterized in that the linear electromagnetic device defines a linear inductor (226).
    [0003]
    Linear electromagnetic device according to claim 1 or 2, characterized in that the core (204) comprises a plurality of plates (206) stacked together.
    [0004]
    Linear electromagnetic device according to claim 1, characterized in that the core and at least one other core comprise a plurality of plates (206) stacked together.
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    法律状态:
    2015-06-30| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-12-24| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-05-12| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2020-09-01| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-08| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 16/07/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/553,267|US9159487B2|2012-07-19|2012-07-19|Linear electromagnetic device|
    US13/553,267|2012-07-19|
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