EP0110970A1 - Electro-aimant d'attraction a courant alternatif - Google Patents

Electro-aimant d'attraction a courant alternatif

Info

Publication number
EP0110970A1
EP0110970A1 EP19830902173 EP83902173A EP0110970A1 EP 0110970 A1 EP0110970 A1 EP 0110970A1 EP 19830902173 EP19830902173 EP 19830902173 EP 83902173 A EP83902173 A EP 83902173A EP 0110970 A1 EP0110970 A1 EP 0110970A1
Authority
EP
European Patent Office
Prior art keywords
magnetic
operably
electromagnet
disk
attracting
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.)
Withdrawn
Application number
EP19830902173
Other languages
German (de)
English (en)
Inventor
Richard Mcclees
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.)
McCLEES INDUSTRIES Inc
Original Assignee
McCLEES INDUSTRIES 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 McCLEES INDUSTRIES Inc filed Critical McCLEES INDUSTRIES Inc
Publication of EP0110970A1 publication Critical patent/EP0110970A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H01F7/20—Electromagnets; Actuators including electromagnets without armatures

Definitions

  • the present invention relates to new and useful improvements in electromagnets and more particularly pertains to a new and improved electromagnet construction which is operable to attract non-magnetic conducting materials as well as magnetic materials .
  • the present invention is to provide a new and improved electromagnet for attracting both ferrous and non-ferrous materials which has all the advantages of the prior art electromagnets and none of the disadvantages.
  • the present invention is particularly designed to facilitate a s imple and economical assembly. More specif ically , the present invention includes the use of an elongated soft iron rod having an annularly-shaped copper or silver disk attached to one end thereof and a second annularly-shaped plastic, wood or fiber disk attached to the other end thereof.
  • the two disks are provided with centrally-positioned apertures into which the ends of the soft iron rod may be frictionally inserted, and a sheet of flexible tin may then be wrapped about the peripheries of the disks along the axial length of the soft iron rod.
  • the tin is of a continuous construction so as to extend between the disks and thus create the appearance of a cylinder wherein the soft iron rod is substantially concealed.
  • the tin may be held in position through the use of electrical tape or some other well known binding means, and alternating layers of conductive wire and tape may then be wrapped about the outer surface of the encircling tin. A source of alternating current applied to the wrapped wire completes the construction of the invention.
  • magnetic materials have groups of atoms whose magnetic fields are more or less permanently lined up. These groups of atoms are commonly referred to as magnetic domains. Each domain is made up of thousands of atoms clustered together with these atoms being arranged in such a manner that the domain acts as a small magnet with north and south seeking poles. In this respect, in an unmagnetized piece of magnetic material, the magnetic domains are arranged in a haphazard manner and as the magnetic material becomes more and more magnetized, more and more of the magnetic domains are aligned. Such alignment results in the north seeking poles all being directed in one direction, with the south seeking poles being similarly aligned in the opposite direction.
  • a strong varying magnetic field is set up in the washers as a result of the induced current, and the direction of the field is such that the washers and core repel each other. If the washers were not securely anchored to the core or some other retaining structure, they would spring out of their mounting as soon as the current was turned on.
  • the varying field in the washers will induce, in turn, a large current in any metal object (ferrous or not) brought near them, with the current then of course acting to set up a magnetic field in the approaching object.
  • the direction of the field will always be such that a part of the object in contact with the outside face of the set of washers will have the opposite magnetic polarity from that face and thus, the object will be attracted thereto.
  • Figure 1 is a perspective view of the electromagnet forming the present invention.
  • Figure 2 is a transverse cross-sectional view of the present invention taken along the line 2-2 in Figure 1.
  • Figure 3 is a longitudinal cross-sectional view taken along the line 3-3 in Figure 2.
  • the elec romagn t 10 may normally be of a cylindrical construction to include an outer shell portion 12 circumf erentially positioned about a soft iron rod core 14, while being attached thereto and spaced therefrom by a pair of annular disks 16, 18, onl -one of which is illustrated in Figure 1.
  • the annularly-shaped disk 16 is formed of either copper or silver.
  • disk 18 should be formed from either plastic, wood or fiber materials, with the respective disks 16, 18 being then securely attached to opposed ends of the aforementioned soft iron rod core 14. This securement of the disks 16, 18 can be accomplished by drilling respective centrally-posi ioned apertures 20, 22 in the disks, such apertures being constructed approximately one-thousandth of an inch smaller than the outside diameter of the soft iron rod 14 to thereby accomplish a desired frictional fit.
  • a sheet of tin 24 may be wrapped about the outer peripheries of the disks 16, 18, with such tin being of a continuous construction whereby the same extends between the disks along the longitudinal length of the soft iron rod core 14.
  • a layer of electrical tape 26, such as Scotch brand may be used to securely hold the tin 24 in position about the disks.
  • the tape can be utilized to completely cover the tin 24, thereby to insure a tight and secure connection between the tin and the circumferential portions of the disks 16, 18.
  • a first layer 28 thereof may be wound about the tin shell 24 along the complete axial length thereof as measured from the plastic, wood or fiber disk 18 to the copper or silver disk 16.
  • An extending lead 30 of this initial layer of wire 28 should be left projecting outwardly from the tin shell 24 so as to form the first half of an eventual electrical connection to a source of alternating current.
  • a second layer of electrical insulating tape 32 may be utilized to retain the wire in its tightly wrapped position, and then a second layer 34 of the wire may be wound in the opposite direction over the tin shell 24.
  • This second layer 34 of wire will also be symmetrically and tightly wrapped along the axial length of the tin shell 24, as measured from the disk 16 to the disk 18, with this second layer then being tightly and securely retained in position by a third layer of insulating tape 36.
  • the electromagnet 10 may be connected to a source of alternating current, as af orediscussed, through the use of the electrical connection leads 30, 38, and with such driving electrical power being supplied thereto, the electromagnet 10 assumes its operable capacity.
  • the end of the electromagnet 10 formed by the copper or silver disk 16 can then be utilized to attract various ferrous and non-ferrous materials.
  • the capacity of the electromagnet 10 to attract various non-ferrous materials can be substantially varied by controlling the magnitude of the voltage supplied thereto.
  • the supplying of a first voltage to the electromagnet 10 may facilitate its attraction to some specific element such as gold, while causing the same to substantially ignore other metallic substances, while a slightly varied voltage may result in the electromagnet attracting aluminum, as opposed to gold and other metals.
  • the present invention can be operated at a certain voltage to effectively attract one specific non-magnetic material that might be mixed among many different non-magnetic materials, and then by changing the voltage to a differnt setting, a different non-magnetic material may be withdrawn from such a mixture.
  • the domains of the electromagnet 10 can be appropriately aligned to give either an attraction or pulling force or alternatively a repulsion or pushing force.
  • the magnetic field strength of the magnet can be controlled by utilizing a higher frequency alternating current than the normal 110 volt, 60 -15- cycle commercially available supply.
  • the present invention offers unlimited opportunities for scientific exploration and possesses an enormous number of potential uses which could be beneficial to centuries.
  • the oceans of the world are essentially enormous ore deposits, with it being predicted that there is a million dollars' worth of gold alone dissolved in every cubic mile of sea water.
  • this gold could be recovered inexpensi ely by simply moving the sea water past a bank of the electromagnets 10.
  • various other minerals could be removed from sea water by choosing the appropriate voltage frequency settings.
  • Another potential use of the present invention would be in the metal sorting industry where it is desired to remove certain metals intermixed with other metals.
  • the present invention might be utilized as a cleaner in the food industry, i. e. , to remove certain metallic materials from food, while there is also potential in non-moving part propulsion systems for vehicles of the future.
  • the present invention could be utilized in the capacity of particular material detection and/or holding, or as a magnetic broom, as an electromagnetic brake whereby certain non-ferrous metals could be employed to facilitate better heat dissipation, as magnetic couplings or switches, as magnetic shock absorbers, and for physiotherapy applications in the medical field.
  • the present invention could also be utilized for metal identification, anti-friction bearings, magnetic suspension in vehicles, toys and games, magnetic locks, magnetic alignment or centering or for magnetic closures.
  • the applications of the invention are essentially endless and it is expected that all such applications fall within the scope and intent of the present invention.
  • the optimum dimensional relationships for the parts of the invention to include variations in size, shape, form, function and manner of operation, are deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed by the present invention. Therefore, the foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

L'invention concerne un électro-aimant d'attraction. Les électro-aimants connus de l'art antérieur sont complexes et difficile à fabriquer. La présente invention s'emploie en particulier à faciliter un assemblage simple et économique de l'électro-aimant. L'éléctro-aimant comprend une tige allongée en fer doux (14) ayant un disque annulaire en cuivre ou argent (16) fixé à une extrémité de la tige (14), et un disque en bois ou fibre (18) fixé à l'autre extrémité de la tige (14). Une feuille d'étain flexible (24) forme une coquille extérieure (12) autour des périphéries des disques (16 et 18) pour créer un corps ayant l'aspect d'un cylindre. Un fil conducteur formant des couches (28, 34) est enroulé autour de la surface extérieure de la coquille (12) et une source de courant alternatif est appliquée aux couches de fils. L'électro-aimant peut fonctionner pour attirer tant des matériaux magnétiques que des matériaux non-magnétiques.
EP19830902173 1982-05-26 1983-05-26 Electro-aimant d'attraction a courant alternatif Withdrawn EP0110970A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38221982A 1982-05-26 1982-05-26
US382219 1982-05-26

Publications (1)

Publication Number Publication Date
EP0110970A1 true EP0110970A1 (fr) 1984-06-20

Family

ID=23508002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830902173 Withdrawn EP0110970A1 (fr) 1982-05-26 1983-05-26 Electro-aimant d'attraction a courant alternatif

Country Status (2)

Country Link
EP (1) EP0110970A1 (fr)
WO (1) WO1983004340A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110711792A (zh) * 2019-09-24 2020-01-21 国网江西省电力有限公司电力科学研究院 一种银铜铁复合导电线材及其制备方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3486203A1 (fr) * 2011-05-18 2019-05-22 Hydro-Quebec Appareil et procédé de transfert de ruban de métal ferromagnétique

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2400869A (en) * 1942-03-14 1946-05-28 Lovell William Vail Electromagnet
US3054026A (en) * 1956-08-21 1962-09-11 William V Lovell Surgical electromagnet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8304340A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110711792A (zh) * 2019-09-24 2020-01-21 国网江西省电力有限公司电力科学研究院 一种银铜铁复合导电线材及其制备方法
CN110711792B (zh) * 2019-09-24 2021-03-02 国网江西省电力有限公司电力科学研究院 一种银铜铁复合导电线材及其制备方法

Also Published As

Publication number Publication date
WO1983004340A1 (fr) 1983-12-08

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840726

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MCCLEES, RICHARD