US2551005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface finishing thermoplastic materials
Assignee: Goodrich Corp
•
Filing: 1946-12-04
•
Granted: 1951-05-01
•
Expires: 1966-12-04
Abstract
No abstract record available.
Inventors
- 👤 Ray D Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:57
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/02; B29C59/04; B44; B44F; B44F1/00; B44F1/02; Y; Y10; Y10S; Y10S264/00; Y10S264/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE METHOD OF CONTINUOUSLY PROVIDING A SURFACE FINISH FOR A SOLID PLASTICICED POLYVINYL CHLORIDE SHEET WHICH COMPRISES PROGRESSIVELY HEATING ONE ENTIRE SURFACE ONLY OF THE SAID SHEET TO AT LEAST THE SOFTENING POINT BY PASSING THE SAID SHEET IN CONTACT WITH A HEATED MIRROR FINISHED, CONTINUOUS, CORROSION-RESISTANT METAL BELT BETWEEN A PAIR OF SQUEEZE ROLLS; COOLING THE SAID SHEET AND THE BELT WHILE IN CONTACT AND FREE FROM EXTERNAL PRESSURE TO A TEMPERATURE BELOW THE SOFTENING POINT OF THE SAID SHEET; AND PROGRESSIVELY STRIPPING THE SAID SHEET FROM THE SAID BELT.
Claim 2
Independent Claim
91 words
THE METHOD OF CONTINUOUSLY PROVIDING A SURFACE FINISH FOR A SOLID PLASTICICED POLYVINYL CHLORIDE SHEET WHICH COMPRISES PROGRESSIVELY HEATING ONE ENTIRE SURFACE ONLY OF THE SAID SHEET TO AT LEAST THE SOFTENING POINT BY PASSING THE SAID SHEET IN CONTACT WITH A HEATED MIRROR FINISHED, CONTINUOUS, CORROSION-RESISTANT METAL BELT BETWEEN A PAIR OF SQUEEZE ROLLS; COOLING THE SAID SHEET AND THE BELT WHILE IN CONTACT AND FREE FROM EXTERNAL PRESSURE TO A TEMPERATURE BELOW THE SOFTENING POINT OF THE SAID SHEET; AND PROGRESSIVELY STRIPPING THE SAID SHEET FROM THE SAID BELT.
References Cited (Backward Citations)
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Cited
US1962683A
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US2075735A
Cited
US2218227A
Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |