Patent CA1158104A successfully refreshed from Google Patents.
CA1158104A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Tamper-indicating sheet
Assignee: Ludlow Corp
•
Filing: 1980-01-28
•
Granted: 1983-12-06
•
Expires: 2000-01-28
Abstract
Abstract ABSTRACT A normally opaque blush coating comprised of a mass of dispersed light-scattering polymeric particles in intimate con-tact with a minor amount of a binder composition, wherein the binder composition is adapted to collapse the coating and coalesce the polymeric particles into a normally translucent coating upon the application of either heat, or solvents selected from a wide spectrum of aromatic and aliphatic solvents. This form of blush coating susceptible to heat or to a wide spectrum of organic solvents finds use in the manufacture of lottery tickets. Such susceptibility reveals that solvent or thermal techniques have been used in tampering with the ticket or a pouch package in which the ticket is held. Such tampering is often the result of an illicit attempt to obtain information about the indicia printed on the ticket.
Inventors
- 👤 James L. Mccorkle
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-03 12:04
CPC Classifications
A; A63; A63F; A63F3/00; A63F3/06; A63F3/065; A63F3/0685; Y; Y10; Y10S; Y10S428/00; Y10S428/916; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/1307
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
69 words
A normally opaque blush coating comprised of a mass of dispersed light-scattering polymeric particles in intimate contact with a minor amount of a binder composition, wherein the binder composition is adapted both to be water resistant, and to collapse the coating and coalesce the polymeric particles into a normally translucent coating upon the application of either heat, or solvents selected from a wide spectrum of aromatic and aliphatic solvents.
Claim 2
Dependent Claim
69 words
A normally opaque blush coating comprised of a mass of dispersed light-scattering polymeric particles in intimate contact with a minor amount of a binder composition, wherein the binder composition is adapted both to be water resistant, and to collapse the coating and coalesce the polymeric particles into a normally translucent coating upon the application of either heat, or solvents selected from a wide spectrum of aromatic and aliphatic solvents.
Claim 3
Dependent Claim
27 words
A blush coating as defined in claim 1, wherein the binder includes solvent leachable plasticizer components which form means to accelerate coalescence of the light-scattering polymeric particles.
Claim 4
Dependent Claim
53 words
A blush coating as defined in claim 1, wherein the binder is thermally activatable to allow coalescence of the light-scattering polymeric particles at a temperature which is in the range of from about 140°F to 220°F, and which is below the coales-cence temperature of the light-scattering polymeric particles when heated without the binder.
Claim 5
Dependent Claim
32 words
A blush coating as defined in claim 1, wherein the coat-ing contains from 10% to 25% of binder by volume, based on the total volume of light-scattering polymeric particles in the coating.
Claim 6
Dependent Claim
88 words
A lottery ticket including, as an integral portion thereof, as a means for detecting thermal and solvent tampering with said ticket, a blush coating comprised of a mass of dispersed light-scattering polymeric particles in intimate contact with a minor amount of a binder composition, wherein the binder composit-ion is adapted both to be water resistant and to collapse the coating and coalesce the polymeric particles into a normally translucent coating upon the application of either heat, or solvent selected from a wide spectrum of aromatic and aliphatic solvents.
Claim 7
Dependent Claim
88 words
A lottery ticket including, as an integral portion thereof, as a means for detecting thermal and solvent tampering with said ticket, a blush coating comprised of a mass of dispersed light-scattering polymeric particles in intimate contact with a minor amount of a binder composition, wherein the binder composit-ion is adapted both to be water resistant and to collapse the coating and coalesce the polymeric particles into a normally translucent coating upon the application of either heat, or solvent selected from a wide spectrum of aromatic and aliphatic solvents.
Claim 8
Dependent Claim
26 words
A lottery ticket as defined in claim 5, wherein said binder includes solvent-leachable plasticizer components which form means to accelerate coalescence of said light-scattering polymeric particles.
Claim 9
Dependent Claim
53 words
A lottery ticket as defined in claim 5, wherein the binder is thermally-activatable to allow coalescence of said light-scattering polymeric particles at a temperature which is in the range of from about 140°F to 220°F, and which is below the coalescence temperature of the light-scattering polymeric particles when heated without the binder system.
Claim 10
Dependent Claim
35 words
A lottery ticket as defined in claim 5, 6 or 7 wherein the coating contains from 10% to 25% of binder by volume, based on the total volume of light-scattering polymeric particles in the coating.
Claim 11
Dependent Claim
43 words
A lottery ticket as defined in claim 5, 6 or 7 wherein the blush coating is adjacent a colored substrate and wherein, on being coalescence of the light-scattering polymeric particles blush coating forms a translucent means to permit viewing of the colored substrate.
Claim 12
Dependent Claim
133 words
A pouch formed of a sheet material comprising (a) a polymer-based cohesive seal and (b) a polymer-based coating formed of small light-scattering polymeric particles deposited in intimate contact with one another within said pouch-forming sheet material, and wherein the light transmitting properties of the based coating is irreversibly and substantially changed by sub-jecting said polymeric particles to temperature of at least 140°F wherein said polymer-based coating includes a binder composition having a mass of dispersed light-scattering polymeric particles in intimate contact with a minor amount of a binder composition, wherein the binder composition is adapted both to be water resistant and to collapse the coating and coalesce the polymeric particles into a normally translucent coating upon the application of either heat, or solvents selected from a wide spectrum of aromatic and aliphatic solvents.
Claim 13
Dependent Claim
133 words
A pouch formed of a sheet material comprising (a) a polymer-based cohesive seal and (b) a polymer-based coating formed of small light-scattering polymeric particles deposited in intimate contact with one another within said pouch-forming sheet material, and wherein the light transmitting properties of the based coating is irreversibly and substantially changed by sub-jecting said polymeric particles to temperature of at least 140°F wherein said polymer-based coating includes a binder composition having a mass of dispersed light-scattering polymeric particles in intimate contact with a minor amount of a binder composition, wherein the binder composition is adapted both to be water resistant and to collapse the coating and coalesce the polymeric particles into a normally translucent coating upon the application of either heat, or solvents selected from a wide spectrum of aromatic and aliphatic solvents.
Claim 14
Dependent Claim
33 words
A secure package resistant to undetectable inspection and formed of a pouch as defined in claim 10 and comprising there-within articles marked for indicating a winning or losing status in a lottery system.
Claim 15
Dependent Claim
52 words
A pouch as defined in claim 10, wherein said binder is thermally-activatable to allow coalescence of said light-scattering polymeric particles at a temperature which is in the range of about 140°F to 220°F and is below the coalescence temperature of the light-scattering polymeric particles when they are thermally activated without the binder.
Claim 16
Dependent Claim
34 words
A pouch as defined in claim 10, 11 or 12, wherein the coating contains from 10% to 25% of binder by volume, based on the total volume of light-scattering polymeric particles in the coating.
Claim 17
Dependent Claim
37 words
A pouch as defined in claim 10, 11 or 12, wherein the polymer-based coating is adjacent a colored substrate and wherein, on being coalesced, the polymer-based coating forms translucent means to permit viewing of the colored substrate.
Claim 18
Dependent Claim
35 words
A blush coating as defined in claim 1, wherein the polymer-based coating is adjacent a colored substrate and wherein, on being coalesced, the polymer-based coating forms translucent means to permit viewing of the colored substrate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.