Magnetic clip device
AssigneeMagnetoplan H. Jo. Holtz
InventorHerman Holtz
Life of this patent
Estimating the term…
Abstract
A magnetic clipping device especially suitable for magnetically retaining on ferromagnetic walls sheet-like articles which may also be stitched or bound together, consists of two permanent magnet face-like elements between which the article is retained which are coupled with each other by a joint or hinge. The permanent magnet elements each consist of a relatively thin permanent magnet foil having a thickness up to 1mm which consists of a rubber- or plastic resin-based anisotropic powder like permanent magnet material. The foils are thoroughly magnetized to define relatively wide stripe-like magnet poles for generating magnetic adhering faces, and the permanent magnet foils are so disposed that opposite stripe-like pole faces face opposite one another.
Claims18
In a magnetic clipping device for magnetically retaining sheet-like articles of the type including two permanent magnet face-like elements which are coupled directly together by a hinge and between which a sheet-like article is retained, the improvement comprising:
- said permanent magnet elements each comprising a relatively thin permanent magnetic foil having a thickness up to about 1 mm in which is embedded an anisotropic powder-like magnet material, each of said foils being magnetized in a direction perpendicular to the faces thereof and in a manner so as to define relatively wide, stripe-like magnetic pole zones for generating magnetic adhering faces, said permanent magnet foils and said zones thereof being so dimensioned and disposed that zones of opposite polarity are disposed opposite one another, and wherein said permanent magnetic foils comprise a front foil constructed in a sandwich style layer consisting of a permanent magnetic foil, a further magnetic foil, and a ferromagnetic ground terminal foil mounted therebetween, and a rear permanent magnetic foil constructed in a sandwich style layer consisting of a permanent magnet foil, and a further magnet foil, and a ferromagnetic ground terminal foil mounted therebetween;
- and
- said hinge being expansible to permit said foils to be maintained in a spaced parallel relationship to one another at a distance corresponding to the thickness of the article to be retained thereby.
In a magnetic clipping device for magnetically retaining sheet-like articles of the type including two permanent magnet face-like elements which are coupled directly together by a hinge and between which a sheet-like article is retained, the improvement comprising:
- said permanent magnet elements each being shaped as bank note clips for retaining bank notes therebetween and each comprising a relatively thin permanent magnetic foil having a thickness up to about 1 mm in which is embedded an anisotropic powder-like magnet material, each of said foils being magnetized in a direction perpendicular to the faces thereof and in a manner so as to define relatively wide, stripe-like magnetic pole zones for generating magnetic adhering faces, said permanent magnet foils and said zones thereof being so dimensioned and disposed that zones of opposite polarity are disposed opposite one another, said permanent magnetic foils being each mounted onto a solid plate and wherein said solid plates are coupled with each other along one edge by an expansible plate hinge comprising a longitudinally-extending eyelet mounted on one of said plates through which a pin extends, which pin is rigidly coupled with the other of said plates, said hinge being expansible in such a manner that said plates are spaced in a parallel relationship with respect to each other at a distance corresponding to the thickness of the article to be retained therein.
In a magnetic clipping device for magnetically retaining sheet-like articles of the type including two permanent magnet face-like elements which are coupled directly together by a hinge and between which a sheet-like article is retained, the improvement comprising:
- said permanent magnet elements each being shaped as bank note clips for retaining bank notes therebetween and each comprising a relatively thin permanent magnetic foil having a thickness up to about 1 mm in which is embedded an anisotropic powder-like magnet material, each of said foils being magnetized in a direction perpendicular to the faces thereof in a manner so as to define relatively wide, stripe-like magnetic pole zones for generating magnetic adhering faces, said permanent magnet foils and said zones thereof being so dimensioned and disposed that zones of opposite polarity are disposed opposite one another, said permanent magnetic foils being each mounted onto a precious-metal plated solid plate and wherein said plates are coupled with each other along one edge by a plate hinge, said hinge comprising a longitudinally-extending eyelet mounted on one of said plates through which a pin extends which is rigidly coupled with the other of said plates in such a manner that said plates are spaced in a parallel relationship with respect to each other at a distance corresponding to the thickness of the article to be retained therebetween.
Dependencies are inferred from the claim text.