|Publication number||US3093919 A|
|Publication date||Jun 18, 1963|
|Filing date||Nov 6, 1958|
|Priority date||Nov 18, 1957|
|Publication number||US 3093919 A, US 3093919A, US-A-3093919, US3093919 A, US3093919A|
|Inventors||Hermann J Holtz|
|Original Assignee||Hermann J Holtz|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (7), Referenced by (83), Classifications (19)|
|External Links: USPTO, USPTO Assignment, Espacenet|
June 18, 1963 H. J. HOLTZ MAGNETIC DISPLAY ARRANGEMENT Filed Nov. 6, 1958 INVENTOR.
HERMANN J. HOLTZ BY E 2 Z ATTORNEY United States Patent 3,093,919 MAGNETIC DISPLAY ARRANGEMENT Hermann J. Holtz, Holsteinstrasse 54, Weisbaden, Germany Filed Nov. 6, 1958, Ser. No. 772,234 Claims priority, application Germany Nov. 18, 1957 8 Claims. (Cl. 40142) This invention relates to a unitary magnetic arrangement intended for visual use, such as for visual demonstration boards, displays, maps, charts, games and drawmgs.
In the past it has been proposed to provide visual demonstration boards, charts and the like which were of magnetizable material and which were intended to support smaller elements, such as markers. Such removable or changeable smaller elements were provided with magnets, or themselves constituted magnets, so that they were held on the demonstration board, chart or the like by magnetic attraction. Because of the wide variety of uses for such magnetic visual display arrangements, there must be a corresponding variety of different types of such re movable or changeable markers or the like. As a consequence, the cost of many such installations tended to be excessively high. Another disadvantage with the previous arrangements of this general type was the impossibility of using removable or changeable elements, such as markers, which were of very thin material, which is necessary in some instances.
In accordance with the present invention, these difliculties are solved by a novel arrangement in which the supporting member itself is pre-magnetized so as to act as a magnet, while the markers or other removable or changeable objects are simply formed of magnetizable material, such as thin iron foil, for example. With this arrangement, the cost of such installations is materially reduced and the number and types of applications of such installations are broadened to include uses which previously were considered impractical or uneconomical.
It is an object of this invention to provide a novel and improved arrangement in which a support, such as a demonstration board, chart or the like, holds a smaller removable or changeable member, such as a marker, by magnetic attraction.
It is also an object of this invention to provide a novel magnetic support which is flexible and may be rolled up when not in use.
It is a further object of this invention to provide a novel magnetic support which has a removable layer adapted to "having visual markings thereon.
ing to the present invention;
FIG. 2 is a perspective view of a ruler having a magnetizable layer on the bottom for cooperation with a magnetic board in accordance with the present invention;
FIGURE 3 is a perspective view, with parts broken away, of a magnetic base having a game board sheet removably attached thereto by means of a pressure sensitive adhesive in accordance with the present invention; and
FIGURE 4 is an enlarged perspective view of a game piece for use with the game board of FIG. 3.
Referring first to FIG. 1, the magnetic display arrangement according to the present invention includes a backing layer composed in whole or part of pr-e-magnetized iron. This layer is magnetized to have a very powerful 3,093,919 Patented June 18, 1963 and, above all, uniform magnetic power field so that it may hold ferrous foils perfectly and may be a rigid board or it may be made flexible, for example, by embedding permanent magnetic iron powder in a rubber or plastic binder. Where the backing layer 10 is flexible, it may be rolled up when not in use. In either case, the backing layer 10 acts as a permanent magnet for holding magnetizable material by magnetic attraction.
Over one face of this backing layer is positioned a thin integral sheet composed of a magnetizable layer 11 and an overlying visual display layer 12 of non-magnetic material which may be written upon, printed, or colored. As shown in FIG. 1, in the final assembly the magnetizable layer 11 is positioned next to the magnetic backing layer 10 and is held thereon by magnetic attraction, while the overlying layer 12 is exposed to view.
The visible layer '12 may be in the form of varnish sprayed onto a soft iron foil 11, or gummed paper, a gummed or sprayed plastic, or the like.
Alternatively, the thin sheet composed of the layers 11 and 12 may be formed by depositing an iron-containing coating 11 on a non-metallic layer 12. In such event, the coating 11 may be in the form of iron powder stirred into a suitable binding material. The iron powder is homogeneously distributed in the binding material, which may be a suitable varnish or an adhesive, and which is applied to the non-metallic layer 12 by painting, spraying, sprinkling, or by a sieve printing machine. The nonmetallic layer 12 desirably may be of paper or cardboard. A sheet constructed in this manner is less expensive than where the magnetizable layer is of iron foil. In addition, the sheet constructed in this manner is more flexible, is less likely to tear and does not have the sharp edges characteristic of sheets made with a foil layer.
In either case, the integral sheet composed of the contiguous layers 11, 12 is only a few hundredths of a millimeter thick and is flexible. The visible surface 12 of this sheet can be written upon, drawn upon or colored in any desired manner. For example, it can be inserted in a typewriter and the desired indicia typed thereon, or it can be written upon or drawn upon by hand, or it can be printed upon by any of the usual processes.
The visible, non-metallic layer 12 of this sheet may constitute a map, chart, or the like on which there are to be no markings made or on which markings are to be made by the usual techniques of drawing or writing thereon.
Alternatively, the visible layer 12 may serve as a base for receiving thin separate magnetizable markers or symbols, such as the numeral designated in FIG. 1 by the reference character 13. Such markers desirably may be made out of thin iron sheets of any desired thickness which are held on the visible layer 12 by means of the magnetic attraction exerted by the underlying magnetic layer 10 by exerting the uniform magnetic power field of the layer 10 through the magnetic layer 12.
In some instances, such small markers may be positioned directly on the underlying magnetic layer 10 without the necessity of having the overlying sheet 11, 12. In such event, the front face of the magnetic layer 10 may be suitably colored, for example by spraying on clear varnish or aluminum bronze. This expedient may be particularly useful when the magnetic layer 10 is in the form of a flexible sheet which is adapted to be rolled up and to serve as a wall map.
Either the visible layer 12 or the individual markers 13 may have a phosphorescent or luminous surface. It such a board assembly is illuminated with ultra-violet light, it gives a notably distinctive and effective appearance, especially if the board is in a room which lacks bright illumination. Such assemblies are especially well suited for 3 use as information boards in railway stations, bus stations or airports.
Also, in accordance with the present invention the layer 11 of the sheet 11, 12 may be pre-magnetized so as to itself constitute a magnet. In such case the base would be unnecessary and the magnetic sheet 11, 12 would constitute a base for receiving magnetizable articles.
A further possible use for the present invention is as a drawing board. In such case, the drawing instruments, such as the ruler 14 in FIG. 2, are underlaid with a thin soft iron foil layer 15. With such an arrangement, such instruments are held magnetically by the magnetic board 10 so that an accidental displacement while drawing is effectively prevented.
FIG. 3 illustrates another novel aspect of the present inveniton as applied specifically to a game board, although it may be applied to other uses, if desired. Here the board comprises a magnetic base 16, which may be rigid or flexible, as desired. This magnetic base may consist of magnetic iron powder irnbedded in a plastic, or it may be any other suitable magnetic body. This base is provided with a removable cover in the form of a sheet having a non-magnetic layer 17 on which the game markings are imprinted and a permanent adhesive layer 18, which desirably may be of the pressure sensitive type. The layer 17 which has the game markings thereon may be of thin plastic material to which the adhesive 18 adheres permanently, so that this cover may be applied to the magnetic base 16 by pressure and may be peeled off of the base when it is desired to position a different game sheet on the base.
Obviously, two such sheets may be provided, one for each major face of the base 16 so that it will be possible to change from one game to another simply by turning the game board over.
As shown in FIG. 4, each of the game pieces for use with the FIG. 3 game board may be a non-magnetic member 19 provided on the bottom with a thin'magnetizable layer 20. This may be done by painting or spraying onto the bottom of a conventional game piece a varnish containing powdered iron. Because of the strong magnetic field of the base 16 it will attract and hold such pieces, even the larger game pieces, such as chess pieces. Alternatively, the game pieces may be thin sheets of iron foil, or paper or cardboard pieces having a varnish coating containing iron powder.
Obviously, the visible layer 17 of the game board may be provided with the game markings suitable for the game to be played, or it may be perfectly plain or colored in the event that the game consists of putting together game pieces which make up a picture or pattern.
Obviously, the use of such an adhesive-backed visible sheet for a magnetic board may be extended to applications other than game boards. Thus, such a visible sheet may be a map, char-t, graph, or the like which is to be used in conjunction with a visual demonstration or explanation. In all such cases, the cost of such installations is materially reduced by virtue of the fact that the visible sheet is readily removable from the magnetic base, so that only a single magnetic base need be provided for a number of such visible sheets.
While there have been described herein and illustrated in the accompanying drawings practical embodiments of the present invention, it is to be understood that various modifications, omissions and refinements which depart from the disclosed embodiment may be adopted without departing from the spirit and scope of the'present invention.
1. A display device comprising, in combination: a thin permanently magnetic base having a smooth continuous mounting surface and formed from finely divided permanently magnetic particles dispersed throughout and imbedded within a non-magnetic binder, said base being magnetized to have a uniform power .field and adapted to hold thin term-magnetic foil; a flexible display sheet coextensive with said mounting surface and comprised of a non-magnetic visual layer and a thin ferromagnetic layer, said sheet being magnetically attracted to said mounting surface by said power field, and said ferromagnetic layer being sufiioiently thin to allow said uniform power field to exert magnetic attraction through said display sheet, and a thin term-magnetic marker held against said visual layer by said power field.
2. A display device as defined in claim 1 wherein said ferromagnetic layer comprises a thin feIro-magnetic foil adhesively secured to said visual layer and magnetically attracted to said permanently magnetic base.
3. A display device as defined in claim 1 wherein said base is flexible and said non-magnetic binder is comprised of a plastic material.
4. A unitary magnetic display arrangement comprising a permanently magnetic base formed of finely divided permanently magnetic particles imbedded in a binder, said base having a uniform magnetic power field; and a flexible display sheet coextensive with said permanently magnetic base, said display sheet having a smooth continuous upper layer and a lower layer, said lower layer comprising a thin ferro-magnetic foil attracted to said base by the magnetic attraction between said permanently magnetic particles and said ferro-magnetic foil, said foil being sufficiently thin to allow said magnetic field to pass through said display sheet, said upper layer of said display sheet having indicia thereon and a thin ferro-magnetic marker held onto said upper layer by said uniform magnetic field passing through said display sheet.
5. A unitary magnetic display arrangement as defined in claim 4 wherein said binder is composed of a plastic material.
6. A unitary magnetic display arrangement as defined in claim 5 wherein said thin ferro-magnetic foil has a thickness of a few hundredths of a millimeter.
7. A display device comprising, in combination: a thin permanently magnetic base having a smooth, continuous mounting surface and formed from finely divided permanently magnetic particles dispersed throughout and imbedded within a non-magnetic binder, said base being magnetized to have a uniform magnetic power field and adapted to hold thin ferro-magnetic foil; a display layer coextensive with said mounting surface and means for securing said display layer onto said mounting surface; a symbol; and a thin ferro-magnetic layer and means for securing said ferro-magnetic layer onto said symbol whereby said symbol vis magnetically attracted to said display layer by said power field.
8. A display device comprising, in combination, a thin permanently magnetic base having a smooth, continuous mounting surface and formed from finely divided permanently magnetic particles dispersed throughout and imbedded within a non-magnetic binder, said base being magnetized to have a uniform magnetic power field and adapted to hold thin ferro-magnetic foil; a display layer coextensive with said mounting surface and means for securing said layer onto said mounting surface; a symbol; and a thin ferro-magnetic layer having a coating of pressure sensitive adhesive, said adhesive securing said ferromagnetic layer onto said symbol whereby said symbol is magnetically attracted to said display layer by said power field.
References Cited in the file of this patent UNITED STATES PATENTS 2,002,077 Darling et al May 21, 1935 2,500,824 Horvath Mar. 14, 1950 2,600,505 Jones June 17, 1952 2,600,951 Edwards June 17, 1952 2,643,466 Bucher June 30, 1953 2,665,913 Hlavac Jan. 12, 1954 2,816,380 Sindell Dec. 17, 1957
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2002077 *||Mar 24, 1933||May 21, 1935||Thomas H Darling||Magnetic puzzle|
|US2500824 *||Dec 22, 1947||Mar 14, 1950||Daniel J Horvath||Container for a checkerboard and pieces|
|US2600505 *||Aug 19, 1948||Jun 17, 1952||Tribune Company||Layout board for photographic reproduction|
|US2600951 *||Aug 12, 1947||Jun 17, 1952||Benjamin F Edwards||Card game equipment|
|US2643466 *||Apr 19, 1950||Jun 30, 1953||Bucher Rudolph S||Game instruction apparatus|
|US2665913 *||Oct 17, 1951||Jan 12, 1954||Hlavac Ludvik||Magnetic playing pieces|
|US2816380 *||Apr 25, 1955||Dec 17, 1957||David I Sindell||Data chart|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3176989 *||Feb 26, 1962||Apr 6, 1965||H J Chapman & Company Adglow L||Magnetic missile device especially for playing games|
|US3194561 *||Mar 8, 1963||Jul 13, 1965||Norman C Schumann||Magnetic card table top|
|US3226838 *||Oct 18, 1962||Jan 4, 1966||Pasco Inc||Magnetic copy-setting device|
|US3235427 *||Oct 27, 1961||Feb 15, 1966||Harold E Koritz||Process for magnetically attaching wall paper|
|US3279074 *||Nov 29, 1963||Oct 18, 1966||Mcquaid Sr Daniel Joseph||Isometric drafting instruments|
|US3298124 *||Apr 20, 1966||Jan 17, 1967||Eaton Paper Corp||Display devices|
|US3308575 *||Feb 26, 1964||Mar 14, 1967||Lemelson Jerome H||Toy trackway and vehicle therefor|
|US3341946 *||Oct 30, 1964||Sep 19, 1967||Clemens Riefler||Drawing apparatus|
|US3436155 *||Oct 18, 1965||Apr 1, 1969||Perin Oliver W Jr||Drilling and tapping aid in the form of an apertured card having a reflective and magnetic face|
|US3503882 *||Sep 6, 1966||Mar 31, 1970||Turco Paint & Varnish Co||Paint composition|
|US3509644 *||Jun 28, 1968||May 5, 1970||Santell Michael P||Self-cleaning blackboard|
|US3654711 *||Feb 16, 1970||Apr 11, 1972||Lowell M Taylor||Teaching aid|
|US3658336 *||Jun 3, 1970||Apr 25, 1972||Caroline Wilke Knapp||Board game apparatus|
|US3716935 *||Aug 5, 1971||Feb 20, 1973||Holtz H||Magnetic board with chart and markers|
|US3746992 *||Sep 15, 1971||Jul 17, 1973||E Serembe||Magnetic plate for drawing desk lining|
|US3774308 *||Mar 16, 1972||Nov 27, 1973||Jurentkuff J||Protractometer|
|US3809233 *||Jul 14, 1972||May 7, 1974||Western Electric Co||Method of and package for transporting articles|
|US3824927 *||Jan 29, 1971||Jul 23, 1974||Ruralist Press Inc||Laminated magnetic printing roll assembly|
|US3832556 *||Dec 26, 1973||Aug 27, 1974||Schroeder B||Luminescent backing sheet for writing in the dark|
|US3876207 *||Aug 6, 1973||Apr 8, 1975||William Jerry Jones||Board game apparatus|
|US3908065 *||Apr 15, 1974||Sep 23, 1975||Minnesota Mining & Mfg||Magnetic embossable label tape laminate|
|US3988845 *||Aug 7, 1975||Nov 2, 1976||Sedalia Neon Company||Sign device having magnetic display characters|
|US4019747 *||Feb 6, 1975||Apr 26, 1977||Antonio Chuilli||Magnetic bingo markers|
|US4213616 *||Jul 2, 1979||Jul 22, 1980||Dickey Thomas E||Four-in-a-row board game|
|US4295275 *||May 8, 1980||Oct 20, 1981||Cugini Sr Larry||Method and apparatus for making raised and flat letter signs|
|US4305587 *||Aug 30, 1979||Dec 15, 1981||Grady Gerald J O||Magnetic game and method|
|US4366637 *||Nov 19, 1980||Jan 4, 1983||Dechamps Dorian V||Set of advertising components|
|US4584223 *||Jun 20, 1984||Apr 22, 1986||Krapf Wallace A||Magnetic display panels|
|US4745689 *||Jan 12, 1987||May 24, 1988||Hiltz Paul J||Multifunctional measuring and layout tool|
|US4771543 *||Sep 3, 1987||Sep 20, 1988||Konrad Joseph D||Patent-drafting aid|
|US4952153 *||May 1, 1989||Aug 28, 1990||Mcallister Norma J||Surface mounted magnetic toy|
|US4972596 *||Jan 17, 1989||Nov 27, 1990||Brewer Aubrey W||Trailer measuring system|
|US5005306 *||Jun 21, 1989||Apr 9, 1991||Kinstler William G||Illuminated vehicle sign|
|US5005841 *||Sep 8, 1989||Apr 9, 1991||Klick Alan B||Means and method of a game board for receiving magnetic pieces|
|US5011159 *||Jan 16, 1990||Apr 30, 1991||Michael Fortunato||Method of playing a chess game|
|US5016888 *||Aug 29, 1988||May 21, 1991||George Banta Co., Inc.||Magnetic game system|
|US5178573 *||Jun 3, 1991||Jan 12, 1993||Helen Smith||Magnetic doll set|
|US5317813 *||Sep 20, 1993||Jun 7, 1994||Reed Stephen D||Carpentry measuring tool|
|US5342057 *||Feb 1, 1993||Aug 30, 1994||Sorkoram Paul O||Interactive, tabletop signage assembly|
|US5343625 *||Nov 25, 1992||Sep 6, 1994||Chen Chiang M||Portable magnetic drafting board|
|US5356294 *||Jul 30, 1993||Oct 18, 1994||Wataru Odomo||Dental diagnostic and instructional apparatus|
|US5503891 *||Oct 25, 1994||Apr 2, 1996||Marflex International Inc.||Flexible magnet attractant display mat|
|US5799423 *||Jul 2, 1996||Sep 1, 1998||Mary Slicer Malino||Magnetic calendar|
|US5852890 *||Sep 12, 1996||Dec 29, 1998||Storeimage Programs Inc.||Magnetic modifiable sign system|
|US6093079 *||Jul 27, 1999||Jul 25, 2000||House; William P.||Toy vehicle track|
|US6217405||Mar 3, 1999||Apr 17, 2001||Sandvik Publishing Ltd.||Magnetically interactive substrate for a book|
|US6235378 *||Nov 12, 1998||May 22, 2001||James T. Lowder||Composite magnetic sheet|
|US6464507||Oct 30, 1998||Oct 15, 2002||Kevin Bailey||Magnetic coaching board|
|US6472037 *||Jul 8, 1999||Oct 29, 2002||Kane Graphical Corporation||Non-permanent adhesive-backed magnetized securing device|
|US6484428 *||Feb 11, 2000||Nov 26, 2002||A.W. Faber-Castel U.S.A.||Double-sided magnet with graphical image on each side|
|US6508007 *||Jul 9, 2001||Jan 21, 2003||Ed Mitchell||Device for measuring bounce, loft and lie of golf club|
|US6547626||Nov 16, 2000||Apr 15, 2003||Sandvik Innovations Llc||Magnetically interactive substrate for a book|
|US6604976||Dec 14, 2000||Aug 12, 2003||Stry-Lenkoff||Segmental toy game|
|US6836987 *||Feb 20, 2002||Jan 4, 2005||Mcmahan Marcus David||Magnetic list and method for making lists|
|US7192628||May 1, 2003||Mar 20, 2007||Sandvik Innovations Llc||Magnetically interactive substrates|
|US7225568||Nov 17, 2003||Jun 5, 2007||Magna Card, Inc||Magnetic advertisement|
|US7238027 *||Jul 20, 2004||Jul 3, 2007||Cardiac Pacemakers, Inc.||Device functionality representation tool|
|US7246458 *||Apr 30, 2004||Jul 24, 2007||Acco Brands Usa Llc||Message board assembly|
|US7373747||Sep 9, 2004||May 20, 2008||Dci Marketing, Inc.||Display system|
|US7448932||Apr 18, 2005||Nov 11, 2008||Origin Products, Ltd.||Toy|
|US7464480 *||Feb 22, 2006||Dec 16, 2008||Sonsarae Vetromila||Craft board assembly and method of use|
|US7690963||Feb 2, 2006||Apr 6, 2010||Origin Products Ltd.||Play mat|
|US7901213||Apr 26, 2007||Mar 8, 2011||Acco Brands Usa Llc||Erasable marker screen assembly|
|US8185980||Nov 1, 2007||May 29, 2012||Aquatic Co.||Magnetic plastic bathware|
|US8708766 *||Oct 4, 2011||Apr 29, 2014||Tech 4 Kids, Inc.||Child's activity toy|
|US20030056413 *||Aug 23, 2002||Mar 27, 2003||Wiemer James A.||Display system|
|US20040241394 *||May 1, 2003||Dec 2, 2004||Sandvik Innovations Llc||Magnetically interactive substrates|
|US20050009438 *||Jul 7, 2003||Jan 13, 2005||Chojnacki Thomas P.||Magnetic bouncing ball and target game|
|US20050014110 *||Mar 25, 2004||Jan 20, 2005||Smith Carter Lena Faye||Choral keyboarding non-note reading methodology|
|US20050075037 *||Feb 12, 2004||Apr 7, 2005||Whitehead Brian Charles||Play mat|
|US20050241197 *||Apr 30, 2004||Nov 3, 2005||Acco Brands, Inc.||Message board assembly|
|US20060019226 *||Jul 20, 2004||Jan 26, 2006||Kari Kilvington||Device functionality representation tool|
|US20060128259 *||Feb 2, 2006||Jun 15, 2006||Whitehead Brian C||Play mat|
|US20060147892 *||Dec 22, 2004||Jul 6, 2006||Greg Moore||Magnetic sheet display system and method of making the same|
|US20060147893 *||Aug 11, 2005||Jul 6, 2006||Gregory Moore||Magnetic sheet display system and method of making the same|
|US20070093171 *||Oct 26, 2005||Apr 26, 2007||Chan Tak K||Doll dressing apparatus|
|US20070151134 *||Jan 4, 2006||Jul 5, 2007||The Howard Company, Inc.||Menuboard with visually integrated animated and static portions|
|US20070193049 *||Feb 22, 2006||Aug 23, 2007||Sonsarae Vetromila||Craft board assembly and method of use|
|US20090113617 *||Nov 1, 2007||May 7, 2009||Fred Adams||Magnetic Plastic Bathware|
|US20090247042 *||Jun 8, 2009||Oct 1, 2009||Koehler Steven M||Magnetic support surface with magnetic shapes|
|US20120088431 *||Oct 4, 2011||Apr 12, 2012||Pedersen Bradley D||Child's Activity Toy|
|US20120235354 *||Mar 9, 2010||Sep 20, 2012||Itzhak Grinold||Storytelling game|
|WO1985000528A1 *||Jul 18, 1984||Feb 14, 1985||Neil Shields Roberts||Game set and board|
|U.S. Classification||40/621, 273/284, 273/287, 273/239, 33/493, 33/DIG.100, 250/483.1, 428/900, 346/135.1, 346/134, 446/137, 52/DIG.400, 273/286|
|Cooperative Classification||Y10S428/90, Y10S52/04, Y10S33/01, G09F7/04|