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Topic: Permanent magnet

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In the News (Wed 20 Mar 19)

  Permanent magnet - Patent 5200001
The permanent magnet according to claim 2, wherein the R is 0 to 3 atomic percent of Dy and/or Tb and the balance being Nd and/or Pr.
The permanent magnet according to claim 6, wherein R is 15 to 17 atomic percent, B is 7 to 8 atomic percent and Cu is 0.02 to 0.09 atomic percent.
The permanent magnet according to claim 5, wherein B is 6 to 8 atomic percent, and Fe is partially replaced by Co in an amount of 4 to 6 atomic percent in the entire magnet.
www.freepatentsonline.com /5200001.html   (6353 words)

 Release-type permanent magnet motor - Patent 5428282
Permanent magnet motors where permanent magnets are spaced about the rotor and interact with electromagnets spaced about the stator, provide efficient motors for energization from direct current sources such as batteries.
The low north pole magnetic flux density produced at the face 70 of electromagnet 46A, by current flow, is sufficient to substantially cancel the attraction between the north pole face at 72 of the first PM at 44A', and the core 50 of the first electromagnet.
Although the permanent magnets may be located on the rotor member and the electromagnets on the stator member, it is possible to instead mount the permanent magnets on the stator member and the electromagnets on the rotor member, which is the equivalent.
www.freepatentsonline.com /5428282.html   (4020 words)

 Magnet - Wikipedia, the free encyclopedia
The SI unit of magnetic field strength is the tesla, and the SI unit of total magnetic flux is the weber.
The end of a magnet that points toward the Earth's geographic North Pole is labeled as the north pole of the magnet; correspondingly, the end that points south is the south pole of the magnet.
Magnets are also used in other types of fastening devices, such as the magnetic base, the magnetic clamp and the refrigerator magnet.
en.wikipedia.org /wiki/Permanent_magnet   (2754 words)

 Howard Johnson: Permanent Magnet Motor
The length of the armature magnet is defined by poles of opposite polarity, and the length of the armature magnet is disposed relative to the track defined by the stator magnets in the direction of the path of movement of the armature magnet as displaced by the magnetic forces.
The magnetic field of the armature magnet may be concentrated and directionally oriented by bowing the armature magnet, and the magnetic field may further be concentrated by shaping the pole ends of the armature magnet to concentrate the magnet field at a relatively limited surface at the armature magnet pole ends.
For further magnetic field concentrating purposes the ends of the armature magnet are shaped by beveled surfaces 30 to minimize the cross-sectional area at the magnet ends at 32, and the magnetic flux existing between the poles of the armature magnet are as indicated by the light dotted lines.
www.rexresearch.com /johnson/1johnson.htm   (16767 words)

 Magnet - Background, History, Raw Materials, Permanent Magnet Materials, Electromagnet Materials
The materials used in permanent magnets (sometimes known as hard materials, reflecting the early use of alloy steels for these magnets) are different than the materials used in electromagnets (some-times known as soft materials, reflecting the use of soft, malleable iron in this application).
Permanent magnet lodestones contain magnetite, a hard, crystalline iron ferrite mineral that derives its magnetism from the effect the earth's magnetic field has on it.
Flexible permanent magnets are formed in a plastic extrusion process in which the materials are mixed, heated, and forced through a shaped opening under pressure.
www.madehow.com /Volume-2/Magnet.html   (2053 words)

 A supplier of permanent magnets: Rare Earth magnets, NdFeB magnets, SmCo magnets
The permanent magnet family consists, in general terms, of non-rare earth permanent magnets and rare earth magnets.
Although non-rare earth magnets are used in the majority of these applications due to their economic cost, rare earth permanent magnets have many distinguishing characteristics, such as a large Maximum Energy Product, (one performance index for permanent magnets).
Permanent magnets with high intrinsic coercive force are referred as "Hard" permanent magnets, which usually associated with high temperature stability.
www.stanfordmagnets.com /magnet.html   (2520 words)

 Permanent Magnetic motor
As the permanent magnet rotor rotates, the permanent magnets are
permanent magnets induce a voltage and current in the copper coils.
magnet cause the permanent magnet to be repelled.
www.angelfire.com /ak5/energy21/erpem3.htm   (698 words)

 WONDERMAGNET.COM - NdFeB Magnets, Magnet Wire, Books, Weird Science, Needful Things
This is because the size and shape of a magnet and the material behind it (such as iron) have a large effect on the measured field strength at the surface, as does the exact location at which it measured.
The north pole of a magnet is the pole that aligns itself with geographic north.
Elementary physics states that the magnetic field of a magnetic dipole is approximately proportional to the inverse cube of the distance from the dipole.
www.wondermagnet.com /magfaq.html   (4043 words)

 Permanent Magnets - Applications
Applications that make use of the tractive and/or repelling force of the magnet, i.e., the attraction between a magnet and a soft magnetic material, such as a piece of iron or steel, or the attraction or repulsion between two magnets, is used to do mechanical work.
The purpose of a permanent magnet is to produce flux in the working gap of a device.
DC permanent magnet motors used in the automobile industry for blowers, window lifts, windshield wipers, etc. (NOTE: Many of the motors come from outside sources not tied directly to the auto company itself).
www.arnoldmagnetics.com /mtc/magnets_permanent_apps.htm   (558 words)

 permanent magnet,permanent magnetic manufacturer and permanent magnet,permanent magnetic supplier--China San Huan ...
San Huan (Ningbo) Nd-Fe-B Magnetics Co., Ltd founded in 1984, is a high-tech enterprise, We specialized in producing neodymium iron boron rare-earth permanent magnets, permanent magnet, permanent magnetic such as: N30-N48, N30M-N45M, N27H-N42H,N27SH-N40SH, N25UH-N33UH, N25EH-N33EH.
With most advanced manufacturing equipment and facilities, tremendous strength and sophisticated testing equipment, We can manufacture magnet, permanent magnet, permanent magnetic with a variety of shapes, sizes and dimensions at the requests of customers, have nickel, zinc, tin, epoxy and aurum coatings applied to magnet.
With its excellent magnetic property, abundant raw material and reasonable prices, rare-earth permanent magnet can be used as an ideal magnet in mini-motor, permanent-magnet instrument,electronic industry, auto industry, petro-chemical industry,nuclear magnetic resonance,sound device, magnetic suspension system, magnetic transmission machine and magnetotherapy apparatus etc.
www.ndfeb-magnetic.com /permanent_magnet.htm   (224 words)

 Permanent Magnet Vs. Induction Motors   (Site not responding. Last check: 2007-10-13)
The permanent magnet motor used in the WasteMaid disposer reaches full torque on the initial revolution, therefore avoiding the jamming situations as mentioned above.
Permanent magnet motors are more compact and lighter (even though more powerful) than the induction motors.
We are proud to say that WasteMaid disposers use only the advanced permanent magnet motors, which (a) tend to avoid jams in the first place, and (b) if the rare jam does occur, the disposer can be easily dejammed by a simple twist of a broomstick or long screwdriver.
www.joneca.com /permanent_magnet_vs__induction.html   (1272 words)

 permanent magnet,electro magnet,advertising magnet manufacturer and permanent magnets,electro magnets, advertising ...
As a professional permanent magnets, electro magnets, advertising magnets manufacturer, exporter, supplier and factory in China.--Ningbo Centre Magnetic and Electronic Co.,Ltd. We specially do all kinds of magnetic filters and also support lifting magnets and permanent magnet, electro magnet, advertising magnet, NdFeB, Ferrite, AlNiCo, FeCrCo and SmCo magnets, and all kinds of chucks.
Magnetic filter is used in magnetizing water, air and fuel.
Magnet has many kind of applications, such as magnetic nip of calling card, magnetic button and so on.
cm.chinese-suppliers.com /n_permanent_magnet.htm   (136 words)

 Permanent magnet DC motors - Hansen
Permanent Magnet DC motors produce high torque as compared to wound field motors.
Permanent Magnet DC motors are ideal for Servo motor applications due to their linear speed/torque curves.
Permanent Magnet motors can be used effectively in applications requiring high start torque, but low inertia loads.
www.hansen-motor.com /dcindex.html   (181 words)

 Permanent Magnet Suspended Separators
The magnetic field configuration of suspended magnets, regardless of make, is deeper at the center than at the sides.
Thus, a magnet narrower than the width of the belt can pull some tramp iron from the belt center but leaves little or no protection at the sides.
hese factors include magnet mounting position, burden depth, bulk density of material being conveyed, belt speed, belt width, and the shape and size of tramp iron to be removed.
www.ohiomagnetics.com /pm_susp_magnet.htm   (418 words)

 Permanent Magnet Company, Inc.
Permanent Magnet has the capability of manufacturing magnets in a wide variety of sizes and shapes.
The look of the magnet can be extremely important in some applications.
It is important for any specification request to include full detail of the magnet's use, placement in the final assembly and strength requirement.
www.permanentmagnetco.com /products.asp   (77 words)

 Permanent Magnet Pulleys
Stearns permanent magnet pulleys are on guard in every conceivable application where uninterrupted, dependable tramp iron protection and purification is required, month after month, year after year.
The exclusive, Stearns Permanent Magnet Pulleys feature a patented continuous radial pole design that combines highly effective separation with cost-saving operation.
Unique wedge-shaped magnets allow more magnetic material to be packed into the pulley, resulting in more magnet power.
www.ohiomagnetics.com /pm_pulleys.htm   (344 words)

 Permanent Magnet Company, Inc.
The only successful permanent magnets are those which hold their magnetic strength to the specified limits.
We know that the strength of the magnetic field and the resistance to demagnetization are measurable qualities in every product we produce.
He graduated from high school at the age of 14 and went on to graduate (with honors) from the engineering school of Purdue University.
www.permanentmagnetco.com   (175 words)

 permanent magnet materials   (Site not responding. Last check: 2007-10-13)
Three principal generic groups of permanent magnet material are of consideration:
Requirement 3 ensures that Hc can be high and also allows predictability of the magnetisation, whatever the geometric arrangement of the magnet system.
If the magnet blocks' material for trimming the field uniformity has a temperature coefficient different from that of the main magnet material, the uniformity might deteriorate.
www.comag.net /ics/materials1.htm   (179 words)

 magnet,magnetic,permanent magnet manufacturer and magnets,magnetics,permanent magnets supplier--China San Huan (Ningbo) ...   (Site not responding. Last check: 2007-10-13)
As a professional magnets, magnetics, permanent magnets manufacturer, exporter, supplier and factory in China.--San Huan (Ningbo) Nd-Fe-B Magnetics Co., Ltd founded in 1984, is a high-tech enterprise, We specialized in producing neodymium iron boron rare-earth permanent magnets, magnet, magnetic, permanent magnet such as: N30-N48, N30M-N45M, N27H-N42H, N27SH-N40SH, N25UH-N33UH, N25EH-N33EH.
With most advanced manufacturing equipment and facilities, tremendous strength and sophisticated testing equipment, We can manufacture magnet with a variety of shapes, sizes and dimensions at the requests of customers, have nickel, zinc, tin, epoxy and aurum coatings applied to magnet.
Now we awarded with the ISO9002 certificate of SGS United Kingdom ltd. Take the advantage of our competitive price as well as supreme quality, reliable services and prompt delivery, Our products, magnets, magnetics, permanent magnets have entered into the international market and meet the ovation of customers, Our annual output is more than 450 tons.
ndfeb.chinese-suppliers.com /n_magnet.htm   (232 words)

 Permanent Magnet - Products for Permanent Magnet - Manufacturers,Exporters,Suppliers,Traders,Companies,Factories   (Site not responding. Last check: 2007-10-13)
Rubber ferrite magnets, bonded rare earth permanent magnets, sint
Permanent Ferrite Magnet Product Name: Cylinder Ferrite Rotor Ma 4 Matching Results from Jining Jinyuan Import & Export Co., Ltd.
NdFeB, the third generation of rare-earth permanent magnet, is th
www.alibaba.com /productsearch/Permanent_Magnet.html   (775 words)

 Permanent Magnet Motors
It moved all the way down the row of magnets all by itself until it reached the last magnet and then stopped.
He then used 2 magnets placed on the outside as the stationary magnets.
So I thought it would be a good idea to at least offer David's notes in a brief plan form to those interested in researching and building there own free energy permanent magnet motor.
www.fuellesspower.com /17_Perm_Magnet_mtrs.htm   (476 words)

 Permanent magnet, magnet materials manufacturer and permanent magnets supplier--China San Huan (Ningbo) Nd-Fe-B ...
Permanent magnet, magnet materials manufacturer and permanent magnets supplier--China San Huan (Ningbo) Nd-Fe-B Magnetics Co., Ltd
With most advanced manufacturing equipment and facilities,tremendous strength and sophisticated testing equipment,We can manufacture magnet with a variety of shapes, sizes and dimensions at the requests of customers, have nickel, zinc, tin, epoxy and aurum coatings applied to magnet.Some......
Our Products: alnico magnet, alnico bar magnets, ferrite magnet, magnet, alnico cast magnet, sintered alnico magnet, magnet application, magnet toy, magnet tool, magnetic stationery, bonded ferrite magnet, sintered ferrite magnet, bonded magnet, sintered ndfeb, magnet smart learning toy, sm2co17 magnet, smco5 magnet, magnetic tools, magnetic toys, alnico magnets, magnetics, ndfeb magnet, magnetic
www.ndfeb-magnetic.com   (126 words)

 Permanent Magnet, Flexible Magnet, Neodymium Magnet, Ferrite Magnet, Bonded Magnet Manufacturer
Permanent Magnet, Flexible Magnet, Neodymium Magnet, Ferrite Magnet, Bonded Magnet Manufacturer
Permanent Magnet - Flexible Magnet - Neodymium Magnet
We combine our quality Plastalloy™ (Flexible Ferrite Magnet) and Reance™ (Flexible and Rigid Neodymium Iron Boron Magnet), products with our award-winning service to provide solutions to your permanent magnet needs.
www.edyne.com   (98 words)

 Permanent Magnet - Hegao Magnetic Technology Co., Ltd
A magnet that retains its magnetism after being removed from a magnetic field.
Magnet - (physics) a device that attracts iron and produces a magnetic field
Permanent magnet - Neodymium iron Boron - Samarium Cobalt - Permanentmagnet - Neodymium Eisen Bor
www.hegaomagtech.com /permanent-magnet.htm   (83 words)

 Permanent magnet motor (US4151431)
The invention is directed to the method of utilizing the unpaired electron spins in ferro magnetic and other materials as a source of magnetic fields for producing power without any electron flow as occurs in normal conductors, and to permanent magnet motors for utilizing this method to produce a power source.
The timing and orientation of magnetic forces at the rotor and stator components produced by permanent magnets to produce a motor is accomplished with the proper geometrical relationship of these components.
Show 21 U.S. patent(s) that reference this one
www.delphion.com /details?patent_number=4151431   (134 words)

 The MAGNETweb   (Site not responding. Last check: 2007-10-13)
with a new magnet design tip each month!
NOTE: If you have reached this page, it means you have an old version of browser which cannot display FRAMES.
Directory of magnetic equipmentCalendar of meetings and courses
www.magnetweb.com   (63 words)

 Permanent Magnet
Super Electronics Co., Ltd. Home : Products Product Description: Permanent Magnet Manufacturer - Superrite Main Products: Permanent Magnet - Type C Magnets(05), Ferrite, Magnet, Ferrite Magnet, Hard Ferrite, Isotropic Magnet, Anisotropic Magnet, Permanent Magnets, raw material for permanent rubber magnets, rubber magnet, magnetic applications
Home > Products > Electrical and Electronics > Passive Devices & MEMS > Inductors & Magnetic Devices > Raw Material For Permanent Rubber Magnets
Any forms of using or quotation, part or all should be authorized by copyright holder All Products Online Corporation.
www.allproducts.com /ee/superrite/permanent_magnet.html   (116 words)

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