US4255837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic clip device
Assignee: Magnetoplan H Jo Holtz OHG
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Filing: 1979-06-11
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Granted: 1981-03-17
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Expires: 1999-06-11
Abstract
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.
Inventors
- 👤 Herman Holtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:36
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02; H01F7/0205; H01F7/021; H01F7/0215; B; B42; B42F; B42F11/00; B42F11/04; Y; Y10; Y10S; Y10S281/00; Y10S281/01; Y10S402/00; Y10S402/503; Y10T; Y10T24/00; Y10T24/20; Y10T24/32; Y10T24/44; Y10T24/44291
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
222 words
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.
Claim 2
Dependent Claim
222 words
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.
Claim 3
Dependent Claim
27 words
The device according to claim 1, wherein said permanent magnet foils are made from a base material selected from the group consisting of rubber and plastic resin.
Claim 4
Dependent Claim
31 words
The device in accordance with claim 1, wherein a ferromagnetic foil which serves as a magnetic ground terminal is mounted on the outer surface of one of said permanent magnet foils.
Claim 5
Dependent Claim
61 words
The device in accordance with claim 1, wherein said permanent magnet foils are shaped as elongated rectangular plates, and wherein said foils comprise a wider rear foil for adhering to a ferromagnetic face, and a front foil to which is secured a ferromagnetic foil which serves as a ground terminal and which overhangs a lower free edge of said front foil.
Claim 6
Dependent Claim
21 words
The device in accordance with claim 1, wherein said foils are shaped as card-index cards for clipping therebetween an index card.
Claim 7
Dependent Claim
35 words
The device in accordance with claim 5, wherein a small window is disposed on the outer side of both of said permanent magnetic foils into which information corresponding to the card-index card may be inserted.
Claim 8
Dependent Claim
35 words
The device in accordance with claim 5, wherein a small frame is disposed on the outer side of both of said permanent magnetic foils upon which information corresponding to the card-index card may be written.
Claim 9
Dependent Claim
30 words
The device in accordance with claim 1, wherein said permanent magnet foils are shaped as electronic data processing card retainers for clamping the cards and are adherable to ferromagnetic faces.
Claim 10
Dependent Claim
22 words
The device in accordance with claim 1, wherein at least one of said foils is provided with a zone for print advertisements.
Claim 11
Dependent Claim
17 words
The device in accordance with claim 1, wherein said permanent magnet foils are shaped as file markers.
Claim 12
Dependent Claim
61 words
The device in accordance with claim 1, wherein said permanent magnetic foils are shaped as retaining means for clear plastic pouches or bags, and said foils include a rear foil which is coupled with an edge of the clear plastic pouch, and a front foil which presses a second edge of the pouch against the first one, thereby closing the pouch.
Claim 13
Dependent Claim
36 words
The device in accordance with claim 1, wherein said hinge for coupling two permanent magnetic foils is made of a flexible material selected from the group consisting of a plastic resin, silicon rubber and adhesive means.
Claim 14
Dependent Claim
19 words
The device according to claim 12, wherein said hinge is provided with a material reduction in the center thereof.
Claim 15
Dependent Claim
36 words
The device in accordance with claim 1, wherein said permanent magnetic foils include a front foil having an outer surface which is provided with a writable and erasable surface for entering and removing indicia and markings.
Claim 16
Dependent Claim
227 words
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.
Claim 17
Dependent Claim
227 words
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.
Claim 18
Dependent Claim
223 words
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.
Claim 19
Dependent Claim
223 words
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.
Claim 20
Dependent Claim
69 words
The device in accordance with claim 15 or 16, wherein said solid plates comprise a first plate and a second plate and said first plate is about 2 mm wider than said second plate, and said second plate is about b 2 mm longer than said first plate, and that both of said plates have a circumferential edge which corresponds to about the thickness of said permanent magnetic foils.
Claim 21
Dependent Claim
28 words
The device in accordance with claim 15 or 16, wherein an embossed like imitation of a bank note is provided on a surface of one of said plates.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-16 | 1984-09-15 | 1985-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-16 | 1988-09-15 | 1989-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-16 | 1992-09-15 | 1993-03-17 | $7700.00 | Window Closed / Lapsed |