US4246307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper-proof laminated sticker or card
Assignee: Individual
•
Filing: 1978-12-20
•
Granted: 1981-01-20
•
Expires: 1998-12-20
Abstract
Abstract A laminate for use as a sticker, identity card, or the like has a back sheet having a front face bearing indicia and a back face that is provided with adhesive to adhere it to a substrate. The front face is adhered to a transparent cover sheet by means of a plurality of spaced-apart adhesive zones, so that any attempt to peel apart the laminate will result in tearing of the back sheet at these zones. In addition the adhesive on the back sheet may be provided in zones alternating with the zones on the front of the back sheet, so that irreversible destruction of this back sheet is ensured in the event of tampering.
Inventors
- 👤 Hansjorg Trautwein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:28
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; B32B7/14; B42; B42D; B42D25/00; B42D25/20; B42D25/23; B42D25/40; B42D25/45; B42D25/465; B42D25/47; B60; B60R; B60R13/00; B60R13/10; G; G09; G09F; G09F3/00; G09F3/02; G09F3/0291; G09F3/0292; G09F3/03; G09F3/0305; G09F3/0341; G09F7/00; B32B2307/00; B32B2307/40; B32B2307/416; B32B2405/00; B32B2425/00; B42D2033/00; B42D2033/04; B42D2033/10; B42D2033/16; B42D2033/18; B42D2033/22; B42D2033/32; B42D2035/02; B42D2035/08; B42D2035/16; B42D2035/34; B42D25/30; B42D25/324; B42D25/455; B42D25/475; Y; Y10; Y10S; Y10S428/00; Y10S428/916; Y10T; Y10T428/00; Y10T428/15; Y10T428/24; Y10T428/24802; Y10T428/24826
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
147 words
A laminate comprising: a relatively fragile back sheet having a back face and a front face; means on said back face of said fragile back sheet for securing same flatly on a substrate; indicia on said front face of said fragile back sheet; an at least partially transparent and relatively strong front sheet having a back face overlying said front face of said fragile back sheet; and means forming a plurality of relatively strong bonds between said back face of said strong front sheet and said front face of said fragile back sheet at spaced-apart bonded zones separated by and defining bond-free zones where said strong and fragile sheets are not bonded together, said indicia partially overlapping said bonded zones and partially overlapping said bond-free zones, whereby an attempt to separate said strong and fragile sheets will tear said relatively fragile back sheet and destroy said indicia.
Claim 2
Dependent Claim
147 words
A laminate comprising: a relatively fragile back sheet having a back face and a front face; means on said back face of said fragile back sheet for securing same flatly on a substrate; indicia on said front face of said fragile back sheet; an at least partially transparent and relatively strong front sheet having a back face overlying said front face of said fragile back sheet; and means forming a plurality of relatively strong bonds between said back face of said strong front sheet and said front face of said fragile back sheet at spaced-apart bonded zones separated by and defining bond-free zones where said strong and fragile sheets are not bonded together, said indicia partially overlapping said bonded zones and partially overlapping said bond-free zones, whereby an attempt to separate said strong and fragile sheets will tear said relatively fragile back sheet and destroy said indicia.
Claim 3
Dependent Claim
30 words
The laminate defined in claim 1 wherein said means on said back face of said back sheet includes a plurality of adhesive zones spaced apart by and defining adhesive-free zones.
Claim 4
Dependent Claim
57 words
The laminate defined in claim 2 wherein said adhesive zones on said back face of said back sheet are offset from said bonded zones between said sheets, whereby when said laminate is installed some parts of said back sheet will be bonded only to said substrate and other parts will be bonded only to said front sheet.
Claim 5
Dependent Claim
34 words
The laminate defined in claim 2 wherein said adhesive zones on said back face of said back sheet and said bonded zones between said sheets are in respective regular arrays offset from each other.
Claim 6
Dependent Claim
36 words
The laminate defined in claim 1, further comprising means forming an annular and continuous bond between said back sheet and said front sheet at the outer peripheries thereof, said sheets being geometrically similar and in registration.
Claim 7
Dependent Claim
18 words
The laminate defined in claim 1, wherein said back sheet is formed with a plurality of throughgoing cuts.
Claim 8
Dependent Claim
33 words
The laminate defined in claim 6 wherein each of said cuts is generally annular and defines a respective cutout region at least partially in registration with a respective one of said bond-free zones.
Claim 9
Dependent Claim
46 words
The laminate defined in claim 7 wherein said means on said back face includes an adhesive generally covering all of said back face of said back sheet, whereby said cutout regions will remain adhered to said substrate if said laminate is pulled off same after installation.
Claim 10
Dependent Claim
21 words
The laminate defined in claim 7 wherein each of said cuts is continuous and extends completely around the respective cutout region.
Claim 11
Dependent Claim
28 words
The laminate defined in claim 7 wherein each of said cuts is discontinuous and only generally separates the respective cutout region from the rest of said back sheet.
Claim 12
Dependent Claim
55 words
The laminate defined in claim 7 wherein each of said cutout regions is generally star-shaped having a plurality of points and is aligned with a respective bond-free zone with said points extending outwardly beyond the respective bond-free zone, said bond free zones therefore being spots each covering the center of a respective star-shaped cutout region.
Claim 13
Dependent Claim
71 words
The laminate defined in claim 11, further comprising an uncut masking sheet covering said back face of said back sheet prior to installation thereof, said means on said back face being adhesive releasably securing said masking sheet to said back sheet, said adhesive on said back face of said back sheet being pressure sensitive and more strongly adhered to said back face of saic back sheet than to said masking sheet.
Claim 14
Dependent Claim
48 words
The laminate defined in claim 7 wherein said cuts are arranged in a first set of parallel lines and a second set of parallel lines transverse to said first set and defining therewith a plurality of rectangles having corners, said bond-free zones corresponding to some of said rectangles.
Claim 15
Dependent Claim
17 words
The laminate defined in claim 13 wherein said lines of said cuts are discontinuous at said corners.
Claim 16
Dependent Claim
13 words
The laminate defined in claim 13 wherein alternate rectangles are in bond-free zones.
Claim 17
Dependent Claim
15 words
The laminate defined in claim 1 wherein said front sheet has an ink-repelling front face.
Claim 18
Dependent Claim
14 words
The laminate defined in claim 1 wherein said front sheet is of nonuniform thickness.
Claim 19
Dependent Claim
15 words
The laminate defined in claim 1 wherein said front sheet has a tapered outer edge.
Claim 20
Dependent Claim
47 words
The laminate defined in claim 1 wherein said front sheet is larger than said back sheet and has an outer periphery extending outwardly beyond the periphery of said back sheet, said outer periphery of said front sheet being provided with means for securing itself to said substrate.
Claim 21
Dependent Claim
19 words
The laminate defined in claim 1 wherein said front sheet is substantially more tear resistant than said back sheet.
Claim 22
Dependent Claim
22 words
The laminate defined in claim 1, further comprising a filament attached to said back sheet and extending out from between said sheets.
Claim 23
Dependent Claim
45 words
The laminate defined in claim 1, wherein said back sheet has an upper transparent layer overlying said indicia and secured at said bonds to said front sheet, said laminate further comprising a transparent rear cover sheet adhered to said back face of said back sheet.
Claim 24
Dependent Claim
58 words
The laminate defined in claim 22 wherein said transparent layer of said back sheet is larger than said back sheet and of substantially the same size and shape as said front sheet and said rear cover sheet, said laminate further comprising an annular bond between said transparent layer and said rear cover sheet and surrounding said back sheet.
Claim 25
Dependent Claim
16 words
The laminate defined in claim 1 wherein said front face of said back sheet is reflective.
References Cited (Backward Citations)
US1445070A
Cited
US1882593A
Cited
US2188310A
Cited
US2684316A
Cited
US2738916A
Cited
US2889233A
Cited
US3297508A
Cited
US3432376A
Cited
US3309257A
Cited
US3315386A
Cited
US3508754A
Cited
US4032679A
Cited
US4070774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |