Patent US2660548A successfully refreshed from Google Patents.
US2660548A
Expired / Lapsed
US
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Method for producing plywood with a paper-faced platen
Assignee: Mengel Co
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Filing: 1950-07-07
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Granted: 1953-11-24
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Expires: 1970-07-07
Abstract
No abstract record available.
Inventors
- 👤 Howard C Soehner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:51
CPC Classifications
B; B27; B27D; B27D1/00; B27D1/04; Y; Y10; Y10S; Y10S425/00; Y10S425/811; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
IN THE MANUFACTURE OF PLYWOOD HAVING AT LEAST ONE FACING SHEET FREE FROM DISCOLORATIONS BY THE WET VENEER METHOD USING A PRESS HAVING HEATED CAUL PLATES PROVIDED WITH SPACED TEETH, THE PROCESS WHICH COMPRISES ASSEMBLING A PLURALITY OF SHEETS OF WOOD INCLUDING AT LEAST ONE FACING SHEET OF WET VENEER WITH LAYERS OF GLUE BETWEEN THE SHEETS, PLACING A LOOSE THIN DISPOSABLE SHEET OF KRAFT PAPER OVER THE SAID FACING SHEET, PRESSING THE RESULTING ASSEMBLY UNDER PRESSURE SUFFICIENT TO PRESS THE CAUL TEETH INTO THE VENEER WHILE HEATING THE PLATES, AND CONTINUING THE APPLICATION OF HEAT AND PRESSURE UNTIL THE PILES ARE UNITED AND THE MOISTURE CONTENT OF THE WET VENEER HAS BEEN REDUCED TO AN AMOUNT NOT SUBSTANTIALLY EXCEEDING 8 PER CENT BY WEIGHT AND THE SECRETIONS DERIVED FROM THE WET VENEER AND PASSED THROUGH THE KRAFT SHEET, THEN STRIPPING OFF THE KRAFT SHEET LEAVING THE FACING SHEET CLEAN AND FREE FROM SECRETIONS.
Claim 2
Dependent Claim
154 words
IN THE MANUFACTURE OF PLYWOOD HAVING AT LEAST ONE FACING SHEET FREE FROM DISCOLORATIONS BY THE WET VENEER METHOD USING A PRESS HAVING HEATED CAUL PLATES PROVIDED WITH SPACED TEETH, THE PROCESS WHICH COMPRISES ASSEMBLING A PLURALITY OF SHEETS OF WOOD INCLUDING AT LEAST ONE FACING SHEET OF WET VENEER WITH LAYERS OF GLUE BETWEEN THE SHEETS, PLACING A LOOSE THIN DISPOSABLE SHEET OF KRAFT PAPER OVER THE SAID FACING SHEET, PRESSING THE RESULTING ASSEMBLY UNDER PRESSURE SUFFICIENT TO PRESS THE CAUL TEETH INTO THE VENEER WHILE HEATING THE PLATES, AND CONTINUING THE APPLICATION OF HEAT AND PRESSURE UNTIL THE PILES ARE UNITED AND THE MOISTURE CONTENT OF THE WET VENEER HAS BEEN REDUCED TO AN AMOUNT NOT SUBSTANTIALLY EXCEEDING 8 PER CENT BY WEIGHT AND THE SECRETIONS DERIVED FROM THE WET VENEER AND PASSED THROUGH THE KRAFT SHEET, THEN STRIPPING OFF THE KRAFT SHEET LEAVING THE FACING SHEET CLEAN AND FREE FROM SECRETIONS.
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) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |