Patent US4827993A successfully refreshed from Google Patents.
Patent US3148431A successfully refreshed from Google Patents.
US3148431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making structural units and the like
Assignee: Individual
•
Filing: 1959-09-03
•
Granted: 1964-09-15
•
Expires: 1979-09-03
Abstract
No abstract record available.
Inventors
- 👤 Henry A Berliner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:04
CPC Classifications
B; B28; B28B; B28B3/00; B28B3/20; B28B3/26; B28B3/2645; Y; Y10; Y10S; Y10S425/00; Y10S425/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
EXTRUDER APPARATUS, COMPRISING: MEANS DEFINING AN EXTRUSION CHAMBER HAVING AN INLET AND AN OUTLET FOR THE PASSAGE OF MATERIAL TO BE EXTRUDED, SAID MEANS INCLUDING A REAR WALL HAVING AN OPENING THEREIN AND A FRONT WALL, SAID OUTLET BEING POSITIONED IN SAID FRONT WALL IN ALIGNMENT WITH SAID OPENING AND BEING SHAPED TO DEFINE A DIE ORIFICE; SUPERIMPOSED ROLLERS POSITIONED WITHIN AND FILLING SAID OPENING TO PREVENT LEAKAGE THERETHROUGH, SAID ROLLERS BEING MOUNTED FOR ROTATION ABOUT HORIZONTAL AXES AND HAVING NORMALLY CONTACTING OPPOSED PERIPHERAL PORTIONS,
Claim 2
Dependent Claim
85 words
EXTRUDER APPARATUS, COMPRISING: MEANS DEFINING AN EXTRUSION CHAMBER HAVING AN INLET AND AN OUTLET FOR THE PASSAGE OF MATERIAL TO BE EXTRUDED, SAID MEANS INCLUDING A REAR WALL HAVING AN OPENING THEREIN AND A FRONT WALL, SAID OUTLET BEING POSITIONED IN SAID FRONT WALL IN ALIGNMENT WITH SAID OPENING AND BEING SHAPED TO DEFINE A DIE ORIFICE; SUPERIMPOSED ROLLERS POSITIONED WITHIN AND FILLING SAID OPENING TO PREVENT LEAKAGE THERETHROUGH, SAID ROLLERS BEING MOUNTED FOR ROTATION ABOUT HORIZONTAL AXES AND HAVING NORMALLY CONTACTING OPPOSED PERIPHERAL PORTIONS,
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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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |