US3170735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated die set
Assignee: Producto Machine Co
•
Filing: 1960-11-17
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Granted: 1965-02-23
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Expires: 1980-11-17
Abstract
No abstract record available.
Inventors
- 👤 Harland H Coffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:08
CPC Classifications
B; B23; B23H; B23H11/00; B23H11/006; Y; Y10; Y10T; Y10T403/00; Y10T403/46; Y10T403/70; Y10T403/7047
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
117 words
IN A DIE SET, A BOTOM PLATE HAVING A WALL SURFACE FORMING AN OPENING THEREIN; A TOP PLATE HAVING A WALL SURFACE FORMING AN OPENING THEREIN; GUIDE POST MEANS HAVING A SURFACE MOUNTED IN THE OPENING IN ONE OF SAID PLATES; BUSHING MEANS MOUNTED IN THE OPENING OF THE OTHER OF SAID PLATES SLIDINGLY RECEIVING SAID GUIDE POST MEANS; A LAYER OF BONDING MATERIAL ON ONE OF SAID SURFACES; A CERAMIC OXIDE LAYER INTEGRALLY UNITED TO SAID ONE OF SAID SURFACES BY SAID BONDING MATERIAL; AND A LAYER OF METAL INTEGRALLY ATTACHED TO SAID CERAMIC OXIDE, THE DIMENSION OF SAID LAYER OF METAL BEING SUCH AS TO FORM A METAL-TO-METAL PRESS FIT WITHIN ONE OF SAID OPENINGS,
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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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |