US3133848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making floor or wall covering
Assignee: Johns Manville Corp
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Filing: 1960-09-19
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Granted: 1964-05-19
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Expires: 1980-09-19
Abstract
No abstract record available.
Inventors
- 👤 Fred S Proctor
- 👤 Francis F Smarr
- 👤 Jr Paul W Brakeley
- 👤 George R Mountain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:43
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0005; D06N7/0028; B; B29; B29C; B29C43/00; B29C43/22; B29C43/24; B29C67/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN THE PROCESS OF FORMING A GRAINED DESIGN IN A THERMOPLASTIC SHEET FOR USE TYPICALLY AS A FLOOR TILE, COMPRISING THE STEPS OF: (A) FORMING A HEATED PLASTIC SHEET OF THERMOPLASTIC MATERIAL; (B) THE MATERIAL INCLUDING THEREIN THERMOPLASTIC SPLASH PARTICLES OF A COOLER TEMPERATURE THAN THE THERMOPLASTIC SHEET MATERIAL; AND (C) CALENDERING THE SHEET WITH SPLASH PARTICLES THEREIN BETWEEN OPPOSED ROLLS HAVING DIFFERENT T EMPERATURES; THE IMPROVEMENT COMPRISING THE STEPS OF: (D) APPLYING TO THE SURFACE OF THE SHEET TO BE ENGAGED BY THE HOTTER CALENDER ROLL A NONCONTAMINATING SUBSTANCE WHICH COOLS, AND INCREASES THE VISCOSITY OF, THE HEATED SHEET SURFACE; AND (E) MAINTAINING THE TEMPERATURE DIFFERENTIAL BETWEEN THE CALENDER ROLLS AT ABOUT 80*F. OR GREATER, WHEREBY, THE SPLASH PARTICLES WILL BE STREAKED, AND SWIRL MARKS SIMULATING WOOD-GRAIN KNOTS WILL BE RANDOMLY DISPOSED ON THE SURFACE OF THE SHEET ENGAGED BY THE HOTTER CALENDER ROLL.
Claim 2
Dependent Claim
145 words
IN THE PROCESS OF FORMING A GRAINED DESIGN IN A THERMOPLASTIC SHEET FOR USE TYPICALLY AS A FLOOR TILE, COMPRISING THE STEPS OF: (A) FORMING A HEATED PLASTIC SHEET OF THERMOPLASTIC MATERIAL; (B) THE MATERIAL INCLUDING THEREIN THERMOPLASTIC SPLASH PARTICLES OF A COOLER TEMPERATURE THAN THE THERMOPLASTIC SHEET MATERIAL; AND (C) CALENDERING THE SHEET WITH SPLASH PARTICLES THEREIN BETWEEN OPPOSED ROLLS HAVING DIFFERENT T EMPERATURES; THE IMPROVEMENT COMPRISING THE STEPS OF: (D) APPLYING TO THE SURFACE OF THE SHEET TO BE ENGAGED BY THE HOTTER CALENDER ROLL A NONCONTAMINATING SUBSTANCE WHICH COOLS, AND INCREASES THE VISCOSITY OF, THE HEATED SHEET SURFACE; AND (E) MAINTAINING THE TEMPERATURE DIFFERENTIAL BETWEEN THE CALENDER ROLLS AT ABOUT 80*F. OR GREATER, WHEREBY, THE SPLASH PARTICLES WILL BE STREAKED, AND SWIRL MARKS SIMULATING WOOD-GRAIN KNOTS WILL BE RANDOMLY DISPOSED ON THE SURFACE OF THE SHEET ENGAGED BY THE HOTTER CALENDER ROLL.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |