US3299473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable screw melter heater
Assignee: EIDP Inc
•
Filing: 1964-08-14
•
Granted: 1967-01-24
•
Expires: 1984-08-14
Abstract
No abstract record available.
Inventors
- 👤 Ellis W Rorer
- 👤 Scheinfeld Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:20
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/78; B29C48/80; B29C48/84; B29C48/845; B29C48/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
IN COMBINATION: A SCREW MELTER HAVING A ROTATABLE EXTRUSION SCREW, SAID SCREW HAVING AN INTERNAL AXIAL BORE, AN ELECTRICAL HEATER ASSEMBLY MOUNTED WITHIN SAID BORE, AND ADJUSTING MEANS FOR ADJUSTING THE AXIAL POSITION OF SAID HEATER ASSEMBLY WITHOUT MODIFYING THE ROTATIONAL MOTION OF SAID SCREW.
Claim 2
Dependent Claim
45 words
IN COMBINATION: A SCREW MELTER HAVING A ROTATABLE EXTRUSION SCREW, SAID SCREW HAVING AN INTERNAL AXIAL BORE, AN ELECTRICAL HEATER ASSEMBLY MOUNTED WITHIN SAID BORE, AND ADJUSTING MEANS FOR ADJUSTING THE AXIAL POSITION OF SAID HEATER ASSEMBLY WITHOUT MODIFYING THE ROTATIONAL MOTION OF SAID SCREW.
References Cited (Backward Citations)
CA657362A
Cited
US2641800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |