US4163818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-slip serving tray and the method of manufacturing thereof
Assignee: Individual
•
Filing: 1978-02-15
•
Granted: 1979-08-07
•
Expires: 1998-02-15
Abstract
Abstract An anti-slip tray and the method of manufacturing it. Sheets of paper impregnated with melamine resin and paper sheets impregnated with phenolic resin are stacked in a pile. A loosely woven cloth covers the pile. Its upper face or major surface is covered with a layer of porous PVC which can be decorative. The cloth has a plurality of perforations. The cloth and pile are molded under heat and pressure.
Inventors
- 👤 Pierre Wernli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:02
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/26; B32B3/266; B29; B29C; B29C43/00; B32B27/00; B32B27/12; B32B27/30; B32B27/304; B32B29/00; B32B29/002; B32B29/005; B32B2307/00; B32B2307/70; B32B2307/744; B32B2317/00; B32B2317/12; B32B2317/125; B32B2439/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964; Y10T428/31967; Y10T442/00; Y10T442/30; Y10T442/3927; Y10T442/3943
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
124 words
A method of manufacturing an anti-slip laminate suitable for making a tray, comprising: stacking sheets of paper impregnated with melamine sheets alternately with sheets of paper impregnated with phenolic resins, the last mentioned sheets having a greater density of impregnated resins than the first-mentioned sheets, placing on the stack a loosely woven cloth covered on its upper face with a layer of porous PVC, said cloth having from eight to ten perforations per square centimeter, the perforations having a diameter of 0.1 to 0.2 mm. pressing the stack in a tray mold with said cloth thereon under a temperature of about 140° C. and at a pressure of about 60 kg./cm. 2 for about ten minutes, and removing a molded laminate from said mold.
Claim 2
Independent Claim
124 words
A method of manufacturing an anti-slip laminate suitable for making a tray, comprising: stacking sheets of paper impregnated with melamine sheets alternately with sheets of paper impregnated with phenolic resins, the last mentioned sheets having a greater density of impregnated resins than the first-mentioned sheets, placing on the stack a loosely woven cloth covered on its upper face with a layer of porous PVC, said cloth having from eight to ten perforations per square centimeter, the perforations having a diameter of 0.1 to 0.2 mm. pressing the stack in a tray mold with said cloth thereon under a temperature of about 140° C. and at a pressure of about 60 kg./cm. 2 for about ten minutes, and removing a molded laminate from said mold.
Claim 3
Dependent Claim
16 words
A method according to claim 1, in which said upper face of said cloth is decorative.
Claim 4
Dependent Claim
19 words
An antislip laminate suitable for making a tray, said laminate being made according to the method of claim 1.
References Cited (Backward Citations)
US1912931A
Cited
US1957732A
Cited
US2042210A
Cited
US2300760A
Cited
US2379248A
Cited
US2463856A
Cited
US2534923A
Cited
US2739081A
Cited
US2694028A
Cited
US3067077A
Cited
US3185371A
Cited
US3464884A
Cited
US3551270A
Cited
US3949133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-06 | 1983-02-05 | 1983-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-06 | 1987-02-05 | 1987-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-06 | 1991-02-05 | 1991-08-07 | $7700.00 | Window Closed / Lapsed |