US3178925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion die
Assignee: EIDP Inc
•
Filing: 1960-12-23
•
Granted: 1965-04-20
•
Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Robert W Nolan
- 👤 Harold R Osmick
- 👤 Frank J Penoza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:50
CPC Classifications
B; B21; B21C; B21C25/00; B21C25/02; B21C25/025; Y; Y10; Y10S; Y10S72/00; Y10S72/70; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49945
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A HOT METAL EXTRUSION DIE COMPRISING, IN COMBINATION, A GENERALLY CYLINDRICAL NIB FABRICATED FROM A REFRACTORY COMPOSITION HAVING A RELATIVELY LOW DUCTILITY PROVIDED WITH A STOCK-RECEIVING INLET SUBSTANTIALLY CENTRALLY LOCATED WITH RESPECT TO SAID NIB NARROWING PROGRESSIVELY TO THE EXTRUDATE DELIVERY OPENING IN SAID NIB, SAID NIB BEING MOUNTED WITH A PRESS FIT WITHIN A STAINLESS STEEL RING HAVING THE APPROXIMATE ANALYSIS 0.08% C (MAX.), 18-20% CR. 8-11% NI, 2% MN (MAX.), BALANCE FE, AND THE SUB-ASSEMBLY CONSISTING OF SAID NIB AND SAID STAINLESS STEEL RING BEING MOUNTED IN TURN WITHIN AN ELASTIC METAL HOUSING TIGHTLY ENCASING SAID SUB-ASSEMBLY CIRCUMFERENTIALLY AND PROVIDED AT THE OUTLET END ADJACENT SAID EX-
Claim 2
Dependent Claim
109 words
A HOT METAL EXTRUSION DIE COMPRISING, IN COMBINATION, A GENERALLY CYLINDRICAL NIB FABRICATED FROM A REFRACTORY COMPOSITION HAVING A RELATIVELY LOW DUCTILITY PROVIDED WITH A STOCK-RECEIVING INLET SUBSTANTIALLY CENTRALLY LOCATED WITH RESPECT TO SAID NIB NARROWING PROGRESSIVELY TO THE EXTRUDATE DELIVERY OPENING IN SAID NIB, SAID NIB BEING MOUNTED WITH A PRESS FIT WITHIN A STAINLESS STEEL RING HAVING THE APPROXIMATE ANALYSIS 0.08% C (MAX.), 18-20% CR. 8-11% NI, 2% MN (MAX.), BALANCE FE, AND THE SUB-ASSEMBLY CONSISTING OF SAID NIB AND SAID STAINLESS STEEL RING BEING MOUNTED IN TURN WITHIN AN ELASTIC METAL HOUSING TIGHTLY ENCASING SAID SUB-ASSEMBLY CIRCUMFERENTIALLY AND PROVIDED AT THE OUTLET END ADJACENT SAID EX-
References Cited (Backward Citations)
US935463A
Cited
US1817680A
Cited
US1840472A
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US2027787A
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US2111046A
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US2219442A
Cited
US2194283A
Cited
US2350465A
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US2708512A
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US2975893A
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US2979973A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |