Patent US4418109A successfully refreshed from Google Patents.
US4418109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Durable, low-maintenance flooring tile
Assignee: Armstrong World Industries Inc
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Filing: 1982-03-29
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Granted: 1983-11-29
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Expires: 2002-03-29
Abstract
Abstract A decorative plastic floor tile composed of a decorative plastic base having a plurality of elements positioned on the base with a clear or translucent wear layer overlying the elements and the base. The base has raised and depressed areas. The elements comprise particles, preferably inorganic and rounded, and these are embedded in a plastic matrix which is placed only on the raised areas of the base. The particles are distributed throughout the matrix in a single layer of particles with the particles protruding from the matrix but being below the upper most level of the wear layer.
Inventors
- 👤 Jesse D. Miller, Jr.
- 👤 James A. Tshudy
- 👤 Ralph E. Unruh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:32
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/02; B; B29; B29D; B29D99/00; B29D99/0057; D; D06; D06N; D06N7/00; D06N7/0005; D06N7/0039; D06N7/0052; E04F15/10; B29L; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/3017; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/24; Y10T428/24355; Y10T428/24364; Y10T428/24372; Y10T428/24479; Y10T428/24521; Y10T428/24612; Y10T428/25; Y10T428/252; Y10T428/259
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
A decorative plastic floor covering in tile form comprising a decorative plastic base having raised and depressed areas, and a plurality of elements positioned on the raised areas only, a cured clear or translucent wear layer overlying both the elements and the plastic base, said elements comprising particles embedded in a cured plastic matrix positioned only on the surface of the raised areas of the base, said particles being distributed on the plastic matrix in a substantially abutting relationship with a single layer structure of particles, those particles protruding above the matrix, but being below the uppermost level of the wear layer, the particles are rounded inorganic particles and have a Moh hardness greater than 4, and a particle size distribution such that none of the particles are greater than about 595 microns, and about 55% of the particles are between about 149 and 296 microns.
Claim 2
Dependent Claim
146 words
A decorative plastic floor covering in tile form comprising a decorative plastic base having raised and depressed areas, and a plurality of elements positioned on the raised areas only, a cured clear or translucent wear layer overlying both the elements and the plastic base, said elements comprising particles embedded in a cured plastic matrix positioned only on the surface of the raised areas of the base, said particles being distributed on the plastic matrix in a substantially abutting relationship with a single layer structure of particles, those particles protruding above the matrix, but being below the uppermost level of the wear layer, the particles are rounded inorganic particles and have a Moh hardness greater than 4, and a particle size distribution such that none of the particles are greater than about 595 microns, and about 55% of the particles are between about 149 and 296 microns.
Claim 3
Dependent Claim
15 words
The floor product of claim 1 wherein the wear layer comprises a cured urethane composition.
Claim 4
Dependent Claim
57 words
The floor product of claim 2 wherein the wear layer comprises a urethane compound photopolymerized by exposure to ultraviolet light from a fluid coating composition comprising urethane having at least two photopolymerizable ethylenically unsaturated groups of the formula: ##STR1## wherein R is either H or CH 3 and wherein the matrix comprises a heat curable acrylated polyester.
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) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |