Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1994-05-26
1995-06-27
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
335284, 264DIG58, 264108, 361143, 361147, H01F 702, H01F 720, H01H 4700
Patent
active
054283329
ABSTRACT:
A process and apparatus for permitting the magnetization of flexible hard magnetic materials in the form of sheets or strips, such as magnetic rubber, wherein opposing arrays formed from alternating magnetic disks and flux conducting elements are use in sets of two with opposing polar moments such as to induce a magnetic flux in the gap between the discs. The width of the magnetic disk and flux conducting elements, respectively, are selected to optimize the magnetic pull strength of the material. At the array ends are flux conducting elements that are about 1/2 (i.e., from about 0.25 to about 0.75, and preferably from about 0.4 to 0.6) of the width of the internal flux conducting elements. A material to be magnetized is passed between the array sets in contrast with both disks and consequently imprinted with magnetic poles. The magnetized properties of the material is enhanced by passing the material through a second set of arrays which are axially offset with respect to the first set of arrays. This enhances the residual induction of the sample, the shape of the Br.sup.2 versus distance curve, and significantly improves the pull strength of the material. A device is provided for the production of the material, and further can be used without modification to imprint nontraversing magnetization by biasing the material to one of the arrays of the second, i.e. exiting, set of arrays.
REFERENCES:
patent: Re34229 (1993-04-01), Shimizu
patent: 3117065 (1964-01-01), Wootten
patent: 3127544 (1964-03-01), Blume, Jr.
patent: 3317872 (1964-09-01), Wullkopf
patent: 3409853 (1968-11-01), Guerth
patent: 3624572 (1971-11-01), Mallinson
patent: 3629756 (1971-12-01), Holtz
patent: 4126567 (1978-11-01), Otera
patent: 4379276 (1983-08-01), Bouchara et al.
patent: 4399422 (1983-08-01), Nelson et al.
patent: 4682137 (1987-07-01), Kasza et al.
patent: 5002677 (1991-03-01), Srail
patent: 5171652 (1992-12-01), Umetani
patent: 5200729 (1993-04-01), Soeda
Glover Richard A.
Kunig Frederic W.
Srail Raymond C.
Szczepanski Thomas R.
Weissman Eric M.
Picard Leo P.
RJF International Corporation
Ryan Stephen T.
LandOfFree
Magnetized material having enhanced magnetic pull strength and p does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetized material having enhanced magnetic pull strength and p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetized material having enhanced magnetic pull strength and p will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-289973