Patent US3449440A successfully refreshed from Google Patents.
Patent US3273202A successfully refreshed from Google Patents.
US3273202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for manufacturing thermoplastic foils with beaded edges
Assignee: Bayer AG
•
Filing: 1963-07-02
•
Granted: 1966-09-20
•
Expires: 1983-07-02
Abstract
No abstract record available.
Inventors
- 👤 Zygan Hieronymus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:10
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/305; B29C48/31; B29C48/03; B29C48/07; B29C48/08; B29C48/12; B29C48/255; B29C48/2556; B29C48/001; B29C48/0018; B29L; B29L2007/00; B29L2007/001; B29L2007/008; B29L2031/00; B29L2031/001; B29L2031/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
AN APPARATUS FOR THE MANUFACTURE OF FOILS OF THERMOPLASTIC MATERIAL WITH BEADED EDGES, WHICH COMPRISES A DIE FOR EXTRUDING A FOIL HAVING A CENTRAL WEB PORTION AND A PAIR OF OPPOSITELY DISPOSED BEADED EDGE PORTIONS, SAID DIE HAVING A SLOT PASSAGE FOR EXTRUDING SAID WEB PORTION AND A PAIR OF MARGINAL GROOVE PASSAGES ADJOINING SAID SLOT PASSAGE AND DISPOSED IN COMMUNICATION THEREWITH FOR EXTRUDING SAID BEADED EDGE PORTIONS, AND A PAIR OF OPPOSITELY DISPOSED FLOW RESTRICTING MEMBERS FOR REGULATING THE OUTFLOW VELOCITY OF THERMOPLASTIC MATERIAL EXTRUDED THROUGH EACH GROOVE PASSAGE, EACH FLOW RESTRICTING MEMBER IN EACH PAIR THEREOF HAVING A SMOOTH CONTOURED BULBOUS PORTION DISPOSED FOR EXTENSION INTO ITS ASSOCIATED GROOVE PASSAGE TO MAINTAIN THE OUTFLOW VELOCITIES OF THEMOPLASTIC MATERIAL EXTRUDED THROUGH THE OUTLETS OF EACH OF SAID GROOVE PASSAGES EQUAL TO EACH OTHER AND TO THE OUTFLOW VELOCITY OF THERMOPLASTIC MATERIAL EXTRUDED THROUGH THE OUTLET OF SAID SLOT PASSAGE WHEREBY THE BEADED EDGE PORTIONS AND THE WEB PORTION OF SAID FOIL ARE EXTRUDED AT A UNIFORM RATE, AND THE DIMENSIONS OF SAID EXTRUDED WEB AND BEADED EDGE FOIL PORTIONS ARE ESTABLISHED INDEPENDENTLY OF EXTRUSION OUTFLOW VELOCITY BY THE OUTLET DIMENSIONS OF SAID SLOT AND GROOVE PASSAGES.
Claim 2
Independent Claim
197 words
AN APPARATUS FOR THE MANUFACTURE OF FOILS OF THERMOPLASTIC MATERIAL WITH BEADED EDGES, WHICH COMPRISES A DIE FOR EXTRUDING A FOIL HAVING A CENTRAL WEB PORTION AND A PAIR OF OPPOSITELY DISPOSED BEADED EDGE PORTIONS, SAID DIE HAVING A SLOT PASSAGE FOR EXTRUDING SAID WEB PORTION AND A PAIR OF MARGINAL GROOVE PASSAGES ADJOINING SAID SLOT PASSAGE AND DISPOSED IN COMMUNICATION THEREWITH FOR EXTRUDING SAID BEADED EDGE PORTIONS, AND A PAIR OF OPPOSITELY DISPOSED FLOW RESTRICTING MEMBERS FOR REGULATING THE OUTFLOW VELOCITY OF THERMOPLASTIC MATERIAL EXTRUDED THROUGH EACH GROOVE PASSAGE, EACH FLOW RESTRICTING MEMBER IN EACH PAIR THEREOF HAVING A SMOOTH CONTOURED BULBOUS PORTION DISPOSED FOR EXTENSION INTO ITS ASSOCIATED GROOVE PASSAGE TO MAINTAIN THE OUTFLOW VELOCITIES OF THEMOPLASTIC MATERIAL EXTRUDED THROUGH THE OUTLETS OF EACH OF SAID GROOVE PASSAGES EQUAL TO EACH OTHER AND TO THE OUTFLOW VELOCITY OF THERMOPLASTIC MATERIAL EXTRUDED THROUGH THE OUTLET OF SAID SLOT PASSAGE WHEREBY THE BEADED EDGE PORTIONS AND THE WEB PORTION OF SAID FOIL ARE EXTRUDED AT A UNIFORM RATE, AND THE DIMENSIONS OF SAID EXTRUDED WEB AND BEADED EDGE FOIL PORTIONS ARE ESTABLISHED INDEPENDENTLY OF EXTRUSION OUTFLOW VELOCITY BY THE OUTLET DIMENSIONS OF SAID SLOT AND GROOVE PASSAGES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |