Compression molding of wooden articles
Abstract
Abstract A WOODEN ARTICLE HAVING A CURVED AND VARYING CROSSSECTON AND A PROCESS OF COMPRESSION MOLDING THE ARTICLE TO SUBSTANTIALLY FINAL DIMENSIONS AND SURFACE SMOOTHNESS. THE WOODEN ARTICLE, E.G., A GUN STOCK, IS SHAPED OR FORMED TO WITHIN ABOUT 10% OF ITS FINAL DIMENSIONS AND THEN IS TREATED WITH A PLASTIC PRIMER MEANS SO AS TO FILL UP THE SURFACE PORES AND CRACKS. THE PRIMED GUN STOCK IS THEN COMPRESSED BY HEATED DIES UNDER PRESSURE TO MOLD PORTIONS, E.G., THE TWO SIDE FACES, TO FINAL DIMENSIONS. THE DIES ARE THEN COOLED WHILE THE STOCK IS STILL HELD UNDER COMPRESSION AND THEN THE DIES ARE RELEASED AND THE STOCK REMOVED. THE SEQUENCE IS REPEATED WITH A SECOND SET OF DIES WHICH ARE ADAPTED TO COMPRESSION MOLD THE NON-MOLDED PORTIONS AND TO OVERLAP THE ORIGINAL MOLDED SURFACE SO AS TO BLEND IN THE FINAL SURFACE AND THUS AVOID ANY FLASHING. THE STOCK CAN ALSO BE CHECKERED DURING ONE OF THE COMPRESSION MOLDING OPERATIONS.
Inventors
- 👤 Harold L Hameister
- 👤 Erwin Reitter Jr
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |