US3190945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for molding contoured articles from sheet material
Assignee: Plasti Vac Inc
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Filing: 1962-12-31
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Granted: 1965-06-22
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Harvey J Diamond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:03
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A METHOD OF VACUUM MOLDING A CONTOURED ARTICLE FROM A SHEET OF MATERIAL THAT BECOMES PLASTIC WHEN HEATED, SAID METHOD COMPRISING SUSPENDING SAID SHEET VERTICALLY, HEATING SAID SUSPENDED SHEET TO RENDER IT PLASTIC, PLACING SAID PLASTIC SHEET WHILE STILL VERTICALLY SUSPENDED OVER A SUBSTANTIALLY VERTICAL PERFORATED MOLD FACE, DISPLACING SAID MOLD FACE TO A GENERALLY HORIZONTAL POSITION, WHILE MAINTAINING SAID PLASTIC SHEET THEREON, DRAWING A VACUUM BELOW SAID PERFORATED MOLD FACE TO DRAW SAID PLASTIC SHEET TO THE CONTOUR OF THE MOLD FACE WHILE ALLOWING SAID SHEET TO COOL TO A RIGID STATE, AND REMOVING THE RIGID SHEET FROM THE MOLD FACE AS A CONTOURED ARTICLE.
Claim 2
Independent Claim
106 words
A METHOD OF VACUUM MOLDING A CONTOURED ARTICLE FROM A SHEET OF MATERIAL THAT BECOMES PLASTIC WHEN HEATED, SAID METHOD COMPRISING SUSPENDING SAID SHEET VERTICALLY, HEATING SAID SUSPENDED SHEET TO RENDER IT PLASTIC, PLACING SAID PLASTIC SHEET WHILE STILL VERTICALLY SUSPENDED OVER A SUBSTANTIALLY VERTICAL PERFORATED MOLD FACE, DISPLACING SAID MOLD FACE TO A GENERALLY HORIZONTAL POSITION, WHILE MAINTAINING SAID PLASTIC SHEET THEREON, DRAWING A VACUUM BELOW SAID PERFORATED MOLD FACE TO DRAW SAID PLASTIC SHEET TO THE CONTOUR OF THE MOLD FACE WHILE ALLOWING SAID SHEET TO COOL TO A RIGID STATE, AND REMOVING THE RIGID SHEET FROM THE MOLD FACE AS A CONTOURED ARTICLE.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |