US3651312A - Magnetically coded card structure - Google Patents

Magnetically coded card structure Download PDF

Info

Publication number
US3651312A
US3651312A US3651312DA US3651312A US 3651312 A US3651312 A US 3651312A US 3651312D A US3651312D A US 3651312DA US 3651312 A US3651312 A US 3651312A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
card
magnets
center
sheet
openings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Walter W Barney
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WALTER W BARNEY
Original Assignee
WALTER W BARNEY
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/36Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/369Magnetised or magnetisable materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/45Associating two or more layers
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/12Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being sensed by magnetic means
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/087Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors flux-sensitive, e.g. magnetic, detectors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D2033/00Structure or construction of identity, credit, cheque or like information-bearing cards
    • B42D2033/08Opaque material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D2033/00Structure or construction of identity, credit, cheque or like information-bearing cards
    • B42D2033/16Magnetic or magnetisable material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D2033/00Structure or construction of identity, credit, cheque or like information-bearing cards
    • B42D2033/22Perforated or incised material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D2035/00Nature or shape of the markings provided on identity, credit, cheque or like information-bearing cards
    • B42D2035/02Nature of the markings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D2035/00Nature or shape of the markings provided on identity, credit, cheque or like information-bearing cards
    • B42D2035/34Markings visible under particular conditions or containing coded information
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/346Perforations
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/45Associating two or more layers
    • B42D25/455Associating two or more layers using heat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/45Associating two or more layers
    • B42D25/46Associating two or more layers using pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/475Cutting cards

Abstract

A monolithic card is formed of three plastic sheets bonded together, wherein the center sheet has a plurality of holes, each filled with a magnetic disc adapted to be axially poled. The center sheet is punched at one station, then located at a second station beneath a flexible card of magnetic material, and with its holes aligned with respective punches which simultaneously punch discs from the card and force them into holes. The center and outer sheets are stacked, and bonded under heat and pressure. The discs are magnetized with polarities at one card face distributed in a desired pattern.

Description

United States Patent Barney Mar. 21, 1972 MAGNETICALLY CODED CARD STRUCTURE [58] Field of Search... ....235/6l.12; 340/149; 346/74 M [56] References Cited UNITED STATES PATENTS 3,015,087 12/1961 O'Gorman ..340/149 3,465,131 9/1969 Ten Eyck ..235/61.l2 3,465,307 9/1969 Schmidt ..235/61.12

3,117,065 l/l964 Wootten ..235/61.l2 X

3,452,358 6/1969 Zehner 3,154,761 10/1964 OGorman ..340/149 FOREIGN PATENTS OR APPLICATlONS 1,124,205 6/1956 France ..235/61.l2

Primary Examiner-Thomas A. Robinson Attorney-Perry E. Turner [5 7] ABSTRACT A monolithic card is formed of three plastic sheets bonded together, wherein the center sheet has a plurality of holes, each filled with a magnetic disc adapted to be axially poled The center sheet is punched at one station, then located at a second station beneath a flexible card of magnetic material, and with its holes aligned with respective punches which simultaneously punch discs from the card and force them into holes. The center and outer sheets are stacked, and bonded under heat and pressure. The discs are magnetized with polarities at one card face distributed in a desired pattern.

2 Claims, 4 Drawing Figures MAGNETICALLY CODED CARD STRUCTURE CROSS-REFERENCE TO RELATED APPLICATION This application is a division of my application, Validator Apparatus for Magnetic Credit Cards and the Like," Ser. No. 650,483, filed June 30, 1967, now U.S. Pat. No. 3,430,200, issued Feb. 25, 1969.

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to magnetic cards for use as credit cards and the like.

2. Description of the Prior Art Magnetic cards as heretofore known have been made of laminations having a center sheet with holes in which very thin metal magnets are located. Such permanent magnets must be individually formed to insure they will be flat when placed in their holes. After these magnet shims are placed in their holes, a stack is made with such center sheet between two outer sheets, and the sheets are bonded together.

Such techniques are unduly time consuming and expensive, and militate against high volume production of credit cards having embedded magnets.

SUMMARY OF THE INVENTION My invention embraces the means and steps for simultaneously forming discs of magnetic material and inserting them in respective holes in a plastic sheet, and for bonding opaque face sheets to said plastic sheet to form a monolithic card with the magnet discs embedded therein.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a flow diagram illustrating the steps of my process for forming a card of my invention;

FIG. 2 is a fragmentary sectional view taken along the lines 22 of the first punch station shown in FIG. 1;

FIG. 3 is a fragmentary sectional view taken along the lines 33 at the second punch station shown in FIG. 1; and

FIG. 4 is an enlarged, fragmentary sectional view of my card as formed by the process illustrated in FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENT My invention embraces an opaque laminated card of three layers of flexible, nonmagnetic e.g., plastic) material, wherein the center ply is formed with a plurality of rows of closely spaced holes, and wherein respective permanent magnets are located in the holes. Referring to FIG. 1, the plastic sheet 40 that forms the center ply of the card is inserted in a punch, as between a base plate 42 and a plate 44 which supports the plurality of rows of punches 46 each. A movable press plate 48 is operated to actuate the punches 46 and thereby punch corresponding rows of openings through the sheet 40. The punches are of small diameter and close spaced to effect correspondingly small, closely spaced openings, e.g., openings of 0.125 inch diameter, with their centers 0.25 inches apart, and with 0.25 inch spacing between the center of adjacent rows.

As shown in FIG. 2, the base plate 42 has openings 50 disposed below plungers 52 which are supported in housings 54 supported in the upper plate 44, and which are biased upwardly, as by spring biasing indicated at 56.

After the plungers 52 are actuated to punch out the circular openings in the sheet 40, the sheet 40 is moved to a second punch station in which magnetic elements are formed and inserted in such openings. To this end, the second punch station is shown to include a plate 62 that supports a plurality of rows of punches 64, in the manner of the plate 44 and punches 46 previously described. This punch station also includes a base plate 66, but the base plate in this instance is a solid plate. In addition, the second punch station includes a center plate 68 that has a plurality of circular openings 70 (see FIG. 3) aligned with the plungers 72 of the punches 64.

The punched sheet 40 is sandwiched between the base plate 66 and the center plate 68, with the prc-punched openings in the sheet 40 aligned with the openings 70 of the center plate. Also a sheet 74 from which the magnets are to be formed is sandwiched between the upper plate 62 and the middle plate 68. Then the ram is actuated, causing the plate 76 to actuate the plungers 72 of the punches simultaneously, whereupon (see FIG. 3) such plungers in a single movement punch discs 80 from the sheet 74 and carry them through the plate 68 and into the openings in the sheet 40.

I have found that an ideal material for the magnetic sheet 74 is one of magnetic material, such as barium ferrite, in a rubber or plastic base. In cards of my invention, I am able to form magnets of such magnetic rubber of only 0.015 inch thickness and 0.125 inch diameter. Further in this connection, the sheets 40, 74 are of the same thickness, so that the surfaces of the discs 80 are flush with those of the sheet 40.

. The elements 80 are magnetized coaxially, i.e., so the opposite faces of each are of opposite polarities. Further, the elements 80 are initially magnetized in a predetermined master pattern, and coding is thereafter effected by reversing the polarities of selected ones of the elements. The master pattern preferably is one in which certain magnets are poled in one direction and the rest are poled in the opposite direction. As will be seen, the pattern may be symmetrical or random.

The type of material above described for the elements 80 has the characteristic that, once magnetized, the elements are permanent magnets which can be demagnetized, if at all, only with extreme difficulty. However, the polarities of such permanent magnets can readily be reversed. In this connection, each element may be initially magnetized by an electromagnet formed of a C-shaped core that is encircled by a coil (not shown). A strong pulse of current passed through the coil will magnetize the element. After all the elements 80 are thus magnetized, coding is similarly effected, e.g., by placing selected magnets between the ends of the core and passing current in the opposite direction through the coil.

The elements 80 can be magnetized immediately after they are inserted in the sheet 40 as above described. In such case, the surfaces of the sheet 40 and elements 80 are cleaned to remove any dust or other foreign matter. Then a sandwich is formed of the sheet 40 and a pair of outer layers of thin, opaque plastic sheets 82, 84 (see FIG. 1). This sandwich is placed in a press 86 and subjected to a suitable combination of heat and pressure to fuse the sheets and form a monolithic card blank 88 in which the elements 80 are embedded (see FIGS. 1 and 4). The outer sheets 82, 84 (FIG. 1) may be thinner than the sheet 40, e.g., 0.010 inches thick.

The card blank 88 may then be processed to add visible information, e.g., by embossing it with a customers name and account number. In this latter connection, it is preferred to emboss the card 88 on a portion thereof that does not overlie the magnetic inserts 80. Thus, as illustrated in FIG. 1, the card is provided with a sufficient surface portion, adjacent the rows of elements 80, on which the desired information can be embossed.

While I have described the magnetizing of the discs 80 before the sheet 40 is sandwiched between the sheets 82, 84, the magnetizing of the discs may be done after the card blank 88 is completed. As will be appreciated, since the card blank is opaque, the discs 80 are not visible. However, initial magnetization and coding may be carried out with the indexing and coding apparatus and techniques of my copending application entitled Encoder Apparatus for Magnetic Credit Cards and the Like, Ser. No. 676,138, filed Oct. 18, I967, now U.S. Pat. No. 3,471,862, issued Oct. 7, 1969.

By forming a card with such closely spaced magnets, I provide a substantially tamper-proof device. In this connection, assume that such a card is lost, and the finder attempts to change the code, i.e., so that the code conforms to that of his own or anothers card. To carry out such a scheme, it is of course necessary to reverse polarities of a number of the magnets. But to do this requires that the exact center of each magnet be located, and that the requisite field be concentrated only through the individual magnet. Slight misalignment in this operation results in polarity reversals of one of more magnets in addition to that intended. Since the magnets are so small and closely spaced, and cannot be seen, there is little likelihood that one can accurately locate the centers and reverse the polarities of only those magnets that must be changed.

Iclaim: 1. In combination: an opaque card formed of a center layer of nonmagnetic material between two layers of opaque, non-magnetic material, said center layer having a plurality of spaced openings therethrough; respective permanent magnets in said openings, said magnets being of the same thickness as said center layer, said magnets being resilient elements frictionally and resiliently engaging the walls of the openings in which they are located,

each magnet being so poled that its opposite surfaces are of opposite polarities, whereby said magnets are poled along lines perpendicular to the opposite surfaces of said center layer,

the polarities of some of the magnets at each surface of said center layer being north poles and the remainder being south poles, said north and south poles at each surface of said center layer being in a predetermined pattern,

the field of each magnet outside the card surfaces being sufficiently strong to operate a respective magnet responsive device when the card is placed in a stationary position adjacent the device,

and said magnets being characterized in that the polarities thereof at the card faces are not alterable or erasable by an opposite magnet pole brought or moved adjacent thereto.

2. The combination of claim ll, wherein said openings are circular and said magnets are disc magnets.

Claims (2)

1. In combination: an opaque card formed of a center layer of nonmagnetic material between two layers of opaque, non-magnetic material, said center layer having a plurality of spaced openings therethrough; respective permanent magnets in said openings, said magnets being of the same thickness as said center layer, said magnets being resilient elements frictionally and resiliently engaging the walls of the openings in which they are located, each magnet being so poled that its opposite surfaces are of opposite polarities, whereby said magnets are poled along lines perpendicular to the opposite surfaces of said center layer, the polarities of some of the magnets at each surface of said center layer being north poles and the remainder being south poles, said north and south poles at each surface of said center layer being in a predetermined pattern, the field of each magnet outside the card surfaces being sufficiently strong to operate a respective magnet responsive device when the card is placed in a stationary position adjacent the device, and said magnets being characterized in that the polarities thereof at the card faces are not alterable or erasable by an opposite magnet pole brought or moved adjacent thereto.
2. The combination of claim 1, wherein said openings are circular and said magnets are disc magnets.
US3651312A 1967-06-30 1969-02-10 Magnetically coded card structure Expired - Lifetime US3651312A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US65048367 true 1967-06-30 1967-06-30
US79786869 true 1969-02-10 1969-02-10

Publications (1)

Publication Number Publication Date
US3651312A true US3651312A (en) 1972-03-21

Family

ID=27095876

Family Applications (1)

Application Number Title Priority Date Filing Date
US3651312A Expired - Lifetime US3651312A (en) 1967-06-30 1969-02-10 Magnetically coded card structure

Country Status (1)

Country Link
US (1) US3651312A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808404A (en) * 1971-12-29 1974-04-30 Magneguide Corp Magnetic identification card
US3953712A (en) * 1973-11-09 1976-04-27 Engineering Design & Development Pty. Ltd. Magnetic identification apparatus
US3995145A (en) * 1975-03-07 1976-11-30 Greer Hydraulics, Inc. Magnetic data reader employing magnetically operated solid state switches, and reader-lock combination
US4151405A (en) * 1976-06-24 1979-04-24 Glen Peterson Ferromagnetic marker pairs for detecting objects having marker secured thereto, and method and system for activating, deactivating and using same
FR2532966A1 (en) * 1982-09-15 1984-03-16 Rca Corp Device authentication perfected by diffraction and reflection
US4754418A (en) * 1984-03-27 1988-06-28 Casio Computer Co., Ltd. Combined electronic calculator and credit card
US4876441A (en) * 1984-03-27 1989-10-24 Casio Computer Co., Ltd. Card-like electronic apparatus
EP0394926A2 (en) * 1989-04-25 1990-10-31 GAO Gesellschaft für Automation und Organisation mbH Method of and device for applying signature strips to identity cards
US20050017082A1 (en) * 2003-07-22 2005-01-27 Agency For Science, Technology And Research Method of identifying an object and a tag carrying identification information
US20050199312A1 (en) * 2001-06-01 2005-09-15 Scientronix, Inc. Method, system and apparatus for passively monitoring the maintenance and distribution of fluid products to heavy work vehicles
US20060255161A1 (en) * 2005-05-12 2006-11-16 Cubic Corporation Variable thickness data card body

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1124205A (en) * 1955-03-30 1956-10-08 Pigral A method of magnetic recording and reproducing applicable to machines such as machine statistics and tapes or cards for carrying out the method
US3015087A (en) * 1955-07-26 1961-12-26 Security Systems Inc Security system
US3117065A (en) * 1959-09-02 1964-01-07 Magnetic Film And Tape Company Method and apparatus for making magnetic recording tape
US3154761A (en) * 1961-03-20 1964-10-27 Daniel N Garrett Security system
US3452358A (en) * 1963-05-03 1969-06-24 Westinghouse Electric Corp Magnetically encoded device
US3465131A (en) * 1966-05-27 1969-09-02 Robert S Ten Eyck Metallic coded card with magnetic reed switch reader
US3465307A (en) * 1964-10-08 1969-09-02 Honeywell Inc Anisotropic magnetic thin film memory apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1124205A (en) * 1955-03-30 1956-10-08 Pigral A method of magnetic recording and reproducing applicable to machines such as machine statistics and tapes or cards for carrying out the method
US3015087A (en) * 1955-07-26 1961-12-26 Security Systems Inc Security system
US3117065A (en) * 1959-09-02 1964-01-07 Magnetic Film And Tape Company Method and apparatus for making magnetic recording tape
US3154761A (en) * 1961-03-20 1964-10-27 Daniel N Garrett Security system
US3452358A (en) * 1963-05-03 1969-06-24 Westinghouse Electric Corp Magnetically encoded device
US3465307A (en) * 1964-10-08 1969-09-02 Honeywell Inc Anisotropic magnetic thin film memory apparatus
US3465131A (en) * 1966-05-27 1969-09-02 Robert S Ten Eyck Metallic coded card with magnetic reed switch reader

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808404A (en) * 1971-12-29 1974-04-30 Magneguide Corp Magnetic identification card
US3953712A (en) * 1973-11-09 1976-04-27 Engineering Design & Development Pty. Ltd. Magnetic identification apparatus
US3995145A (en) * 1975-03-07 1976-11-30 Greer Hydraulics, Inc. Magnetic data reader employing magnetically operated solid state switches, and reader-lock combination
US4151405A (en) * 1976-06-24 1979-04-24 Glen Peterson Ferromagnetic marker pairs for detecting objects having marker secured thereto, and method and system for activating, deactivating and using same
FR2532966A1 (en) * 1982-09-15 1984-03-16 Rca Corp Device authentication perfected by diffraction and reflection
US4876441A (en) * 1984-03-27 1989-10-24 Casio Computer Co., Ltd. Card-like electronic apparatus
US4754418A (en) * 1984-03-27 1988-06-28 Casio Computer Co., Ltd. Combined electronic calculator and credit card
US5421949A (en) * 1989-04-25 1995-06-06 Gao Gesellschaft Fur Automation Und Organisation Gmbh Apparatus for applying signature stripes to identity cards
EP0394926A2 (en) * 1989-04-25 1990-10-31 GAO Gesellschaft für Automation und Organisation mbH Method of and device for applying signature strips to identity cards
EP0394926A3 (en) * 1989-04-25 1992-01-08 GAO Gesellschaft für Automation und Organisation mbH Method of and device for applying signature strips to identity cards
US5252167A (en) * 1989-04-25 1993-10-12 Gao Gesellschaft Fur Automation Und Organisation Mbh Method for applying signature to identify cards
US20050199312A1 (en) * 2001-06-01 2005-09-15 Scientronix, Inc. Method, system and apparatus for passively monitoring the maintenance and distribution of fluid products to heavy work vehicles
US7343252B2 (en) 2001-06-01 2008-03-11 Scientronix Inc. Method, system and apparatus for passively monitoring the maintenance and distribution of fluid products to heavy work vehicles
US20050017082A1 (en) * 2003-07-22 2005-01-27 Agency For Science, Technology And Research Method of identifying an object and a tag carrying identification information
EP1646891A1 (en) * 2003-07-22 2006-04-19 Agency for Science, Technology and Research A method of identifying an object and a tag carrying identification information
EP1646891A4 (en) * 2003-07-22 2009-01-28 Agency Science Tech & Res A method of identifying an object and a tag carrying identification information
US7865722B2 (en) 2003-07-22 2011-01-04 Agency For Science, Technology And Research Method of identifying an object and a tag carrying identification information
US20060255161A1 (en) * 2005-05-12 2006-11-16 Cubic Corporation Variable thickness data card body
US7810718B2 (en) 2005-05-12 2010-10-12 Cubic Corporation Variable thickness data card body

Similar Documents

Publication Publication Date Title
US5834747A (en) Universal credit card apparatus and method
US6095416A (en) Method and device for preventing unauthorized use of credit cards
US7641124B2 (en) Magnetic data recording device
US3968465A (en) Inductor and method for producing same
US3634657A (en) Electronic reader means for magnetic credit cards and the like
US3228133A (en) Permanent magnet display board
US3465131A (en) Metallic coded card with magnetic reed switch reader
US4206374A (en) Synchronous motor
US3585547A (en) Electromagnetic force motors having extended linearity
US2793135A (en) Method and apparatus for preparing a latent magnetic image
US2269149A (en) Permanent magnet
US3683371A (en) Magnetic keyboard terminal
US2784392A (en) Data recording system
US2080100A (en) Method and means for storing and selecting records
US5266914A (en) Magnetic chuck assembly
US3097598A (en) Printing cylinder
US5942961A (en) Magnetized material having enhanced magnetic pull strength and a process and apparatus for the multipolar magnetization of the material
US2666151A (en) Magnetic switching device
US2614167A (en) Static electromagnetic memory device
US3127544A (en) Apparatus for magnetizing permanent magnet materials to form band-like poles thereon
US3606595A (en) Electromagnetic pump utilizing a permanent magnet
US3743898A (en) Latching actuators
US2769873A (en) Key operated multiple electric circuit switch
US2812203A (en) Permanent magnet holding arrangement
US3659354A (en) Braille display device