US2765248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming combined metal and plastic article
Assignee: Individual
•
Filing: 1955-06-13
•
Granted: 1956-10-02
•
Expires: 1975-06-13
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Beech
- 👤 Richard T Beech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:44
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B29; B29C; B29C39/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24521; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31551; Y10T428/31627
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A METHOD OF DIE FORMING, IN AN INEXPENSIVE EASILY WORKED MOLD, ARTICLES HAVING A RELATIVELY THIN METALLIC SHELL WITH A DENSE OUTER SURFACE AND FORMED INTO VARIOUS CURVES AND BACKED BY A THICK LAYER OF PLASTIC BONDED TO THE SHELL TO RIGIDIFY AND STRENGTHEN THE SHELL, COMPRISING THE STEPS OF: FORMING A DIE WITH AN OPEN DIE CAVITY FROM AN EASILY WORKED POROUS MATERIAL; SEALING THE PORES OF THE DIE MATERIAL WITHIN THE CAVITY WITH A SEALING MATERIAL; FORMING A METALLIC OUTER SHELL BY SPRAYING MOLTEN METAL INTO THE DIE CAVITY AGAINST THE CAVITY WALLS UNDER HIGH PRESSURE TO FORM A THIN, HIGH DENSITY SURFACE IN CONTACT WITH THE DIE WALLS, AND CONTINUING THE MOLTEN METAL SPRAY UNDER LOW PRESSURE TO QUICKLY FORM A LESS DENSE AND POROUS METALLIC BACKING FOR THE OUTER METALLIC SURFACE; IMMEDIATELY THEREAFTER, WHILE THE SHELL IS STILL HOT, DEPOSITING UNDER ORDINARY ATMOSPHERIC CONDITIONS OF PRESSURE AND TEMPERATURE A THICK BACKING LAYER OF A NONMETALLIC THERMOPLASTIC MATERIAL WITHIN THE SHELL TO THEREBY BOND THE PLASTIC MATERIAL AND THE SHELL TOGETHER; AND FINALLY, REMOVING THE ARTICLE FROM THE DIE.
Claim 2
Independent Claim
182 words
A METHOD OF DIE FORMING, IN AN INEXPENSIVE EASILY WORKED MOLD, ARTICLES HAVING A RELATIVELY THIN METALLIC SHELL WITH A DENSE OUTER SURFACE AND FORMED INTO VARIOUS CURVES AND BACKED BY A THICK LAYER OF PLASTIC BONDED TO THE SHELL TO RIGIDIFY AND STRENGTHEN THE SHELL, COMPRISING THE STEPS OF: FORMING A DIE WITH AN OPEN DIE CAVITY FROM AN EASILY WORKED POROUS MATERIAL; SEALING THE PORES OF THE DIE MATERIAL WITHIN THE CAVITY WITH A SEALING MATERIAL; FORMING A METALLIC OUTER SHELL BY SPRAYING MOLTEN METAL INTO THE DIE CAVITY AGAINST THE CAVITY WALLS UNDER HIGH PRESSURE TO FORM A THIN, HIGH DENSITY SURFACE IN CONTACT WITH THE DIE WALLS, AND CONTINUING THE MOLTEN METAL SPRAY UNDER LOW PRESSURE TO QUICKLY FORM A LESS DENSE AND POROUS METALLIC BACKING FOR THE OUTER METALLIC SURFACE; IMMEDIATELY THEREAFTER, WHILE THE SHELL IS STILL HOT, DEPOSITING UNDER ORDINARY ATMOSPHERIC CONDITIONS OF PRESSURE AND TEMPERATURE A THICK BACKING LAYER OF A NONMETALLIC THERMOPLASTIC MATERIAL WITHIN THE SHELL TO THEREBY BOND THE PLASTIC MATERIAL AND THE SHELL TOGETHER; AND FINALLY, REMOVING THE ARTICLE FROM THE DIE.
References 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) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |