Patent US4687231A successfully refreshed from Google Patents.
US4687231A
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Identification card readable by a magnetic system
Assignee: GEORGE HARTMANN & Co KG MERCEDESSTRASSE 17 D-7000 STUTTGART 50 WEST GERMANY A CORP OF WEST GERMANY GmbH
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Filing: 1985-12-16
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Granted: 1987-08-18
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Expires: 2005-12-16
Abstract
Abstract In an identification card to be read by a magnetic system, having two protective plates between which a plate-like data carrier is held and protected, this data carrier being made of a material acting upon a magnetic field and having zones providing the data and acting variously upon the magnetic field, it is proposed, in order to lengthen the life of the card as well as to provide greater security against counterfeiting, that the two protective plates be made from non-magnetizable metal, preferably sheet bronze, and that the data carrier be embedded between the two protective plates in a layer of adhesive, plastic or solder, the two protective plates being thereby firmly joined together.
Inventors
- 👤 Hans Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:02
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/06187; G06K19/06196; Y; Y10; Y10S; Y10S283/00; Y10S283/904
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
83 words
An identification card to be read using a magnetic system, comprising: two protective plates of sheet bronze, each protective plate defining an engagement surface; at least one sheet-like data carrier comprising a material acting upon a magnetic field and having at least one data zone; and an elastic layer situated between the protective plates and in engagement with the engagement surfaces to firmly join the protective plates, each data carrier being situated in the elastic layer and held therein in a protected manner.
Claim 2
Dependent Claim
83 words
An identification card to be read using a magnetic system, comprising: two protective plates of sheet bronze, each protective plate defining an engagement surface; at least one sheet-like data carrier comprising a material acting upon a magnetic field and having at least one data zone; and an elastic layer situated between the protective plates and in engagement with the engagement surfaces to firmly join the protective plates, each data carrier being situated in the elastic layer and held therein in a protected manner.
Claim 3
Dependent Claim
22 words
The identification card as defined in claim 1, wherein the elastic layer is selected from the group comprising adhesive, plastic or solder.
Claim 4
Dependent Claim
28 words
The identification card as defined in claim 1, wherein the elastic layer comprises permanently elastic material selected from the group comprising rubber, a rubber-like plastic or acrylate adhesive.
Claim 5
Dependent Claim
57 words
The idenfitication card as defined in claim 1, further comprising: an optically readable data carrier, wherein a recess is provided in one of the protective plates in which the optically readable data carrier is situated to be approximately flush with the protective plate defining the recess, said optically readable data carrier being held by said plastic layer.
Claim 6
Dependent Claim
25 words
The identification card as defined in claim 1, wherein the elastic layer comprises a hardenable material which is free-flowing while the card is being made.
Claim 7
Dependent Claim
19 words
The identification card as defined in claim 1, wherein the sheet bronze protective plates are rolled out until resilient.
Claim 8
Dependent Claim
19 words
The identification card as defined in claim 1, wherein the protective plates have a thickness of approximately 0.2 mm.
Claim 9
Dependent Claim
19 words
The identification card as defined in claim 1, wherein the elastic layer has a thickness of approximately 0.4 mm.
Claim 10
Dependent Claim
26 words
The identification card as defined in claim 1, wherein two sheet-like data carriers are provided, at least one of which includes the capacity for variable data.
Claim 11
Dependent Claim
20 words
The identification card as defined in claim 9, wherein the two sheet-like data carriers are disposed parallel to each other.
Claim 12
Dependent Claim
30 words
The identification card as defined in claim 9, wherein one of the protective plates includes a groove into which the data carrier having the capacity for variable data is disposed.
Claim 13
Dependent Claim
24 words
The identification card as defined in claim 9, wherein the data carrier including the capacity for variable data comprises a piece of magnetic tape.
Claim 14
Dependent Claim
18 words
The identification card as defined in claim 1, wherein said at least one data zone provides variable data.
Claim 15
Dependent Claim
28 words
The identification card as defined in claim 13, wherein the data zone providing non-variable data comprise holes in the data carrier which are filled with the elastic layer.
Claim 16
Dependent Claim
18 words
The identification card as defined in claim 1, wherein said at least one data zone provides non-variable data.
Claim 17
Dependent Claim
20 words
The identification card as defined in claim 1 wherein a variable data zone and a non-variable data zone are provided.
Claim 18
Dependent Claim
96 words
An identification card to be read using a magnetic system, comprising: a protective plate of sheet bronze, said plate including a groove extending into said plate from one surface thereof; an elastic layer; at least one sheet-like data carrier situated within the elastic layer, said data carrier comprising a material acting upon a magnetic field and having zones providing nonvariable data, said elastic layer being situated within the groove; and a further data carrier situated flush within the groove and in engagement with the elastic layer, said further data carrier having the capacity for variable data.
Claim 19
Dependent Claim
96 words
An identification card to be read using a magnetic system, comprising: a protective plate of sheet bronze, said plate including a groove extending into said plate from one surface thereof; an elastic layer; at least one sheet-like data carrier situated within the elastic layer, said data carrier comprising a material acting upon a magnetic field and having zones providing nonvariable data, said elastic layer being situated within the groove; and a further data carrier situated flush within the groove and in engagement with the elastic layer, said further data carrier having the capacity for variable data.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |