Patent US2563396A successfully refreshed from Google Patents.
US2563396A
Expired / Lapsed
US
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Method and apparatus fob manufac
Assignee: —
•
Filing: —
•
Granted: 1951-08-07
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Expires: 1968-08-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:37
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/24; B30B11/243; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/25; B29C48/36; B29C48/395; B29C48/40; B29C48/425; B29C48/43; B29C48/435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
AN APPARATUS FOR MANUFATURING BY EXTRUSION STRUCTURAL MEMBERS FROM THERMOPLASTIC SYNTHETIC RESINS COMPRISING INTERMESHING SCREWS HAVING PARALLEL AXES ALL ARRANGED TO ROTATE IN THE SAME DIRECTION IN WHICH THE THREAD OF EACH SCREW COMPLETELY FILLS THE SPACES BETWEEN THE THREADS OF THE SCREW OR SCREWS INTERMESHING WITH THE SAME, A CONTAINER CONFINING SAID SCREWS AND FITTING THE OUTER PERIMETERS THEREOF, MEANS FOR DRIVING SAID SCREWS, THE THREADS OF SAID SCREWS HAVING A DECREASING PITCH AND DIAMETER FROM SAID INLET TO SAID OUTLET OPENING, INLET OPENINGS TO SAID SCREWS IN SAID CONTAINER, AND OUTLET OPENING FROM SAID SCREWS IN SAID CONTAINER, AND A FORMING DIE IN SAID OUTLET OPENING.
Claim 2
Independent Claim
108 words
AN APPARATUS FOR MANUFATURING BY EXTRUSION STRUCTURAL MEMBERS FROM THERMOPLASTIC SYNTHETIC RESINS COMPRISING INTERMESHING SCREWS HAVING PARALLEL AXES ALL ARRANGED TO ROTATE IN THE SAME DIRECTION IN WHICH THE THREAD OF EACH SCREW COMPLETELY FILLS THE SPACES BETWEEN THE THREADS OF THE SCREW OR SCREWS INTERMESHING WITH THE SAME, A CONTAINER CONFINING SAID SCREWS AND FITTING THE OUTER PERIMETERS THEREOF, MEANS FOR DRIVING SAID SCREWS, THE THREADS OF SAID SCREWS HAVING A DECREASING PITCH AND DIAMETER FROM SAID INLET TO SAID OUTLET OPENING, INLET OPENINGS TO SAID SCREWS IN SAID CONTAINER, AND OUTLET OPENING FROM SAID SCREWS IN SAID CONTAINER, AND A FORMING DIE IN SAID OUTLET OPENING.
References Cited (Backward Citations)
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Cited
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GB180638A
Cited
DE397961C
Cited
US1831779A
Cited
US2048286A
Cited
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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) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |