US2754544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film extrusion die
Assignee: EIDP Inc
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Filing: 1954-02-02
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Granted: 1956-07-17
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Expires: 1974-02-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Leo B Bicher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:31
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/35; B29C48/03; B29C48/07; B29C48/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
AN EXTRUSION DIE COMPRISING A FRONT BLOCK TWO SPACER PLATES AND A REAR BLOCK IN JUXTAPOSITION, SAID BLOCKS HAVING THEIR INNER SURFACES HOLLOWED OUT TO DEFINE WITH SAID SPACER PLATES AN UPPER RESERVIOR, AN ENTRANCE PASSAGE AND A NARROW RESTRICTED EXIT PASSAGE TERMINATING IN AN ELONGATED NARROW RECTANGULAR ORIFICE LIP THE ENDS OF WHICH HAVE LATERAL BEAD-FORMING VERTICAL GROOVES OF SMALL CROSS-SECTION, TWO OF SAID GROOVES BEING SITUATED IN THE SAME INNER SURFACE OF AT LEAST ONE BLOCK AND EXTENDING INTO AND COMMUNICATING WITH SAID UPPER RESERVIOR; SAID FRONT BLOCK CARRYING TWO SPACED VERTICALLY-ADJUSTABLE, BEAD-CONTROLLING MEMBERS EACH EXTENDING INTO THE LOWER END OF ITS RESPECTIVE GROOVE TO VARY ITS DEPTH, AND AT LEAST ONE OF SAID BLOCKS CARRYING TWO VERTICALLY-ADJUSTABLE DAM MEMBERS HAVING CURVED-BOTTOM DOCTORING-SURFACES TO CONTROL THE FLASHING BEYOND SAID GROOVES OF AN EXTRUDED FILM.
Claim 2
Dependent Claim
136 words
AN EXTRUSION DIE COMPRISING A FRONT BLOCK TWO SPACER PLATES AND A REAR BLOCK IN JUXTAPOSITION, SAID BLOCKS HAVING THEIR INNER SURFACES HOLLOWED OUT TO DEFINE WITH SAID SPACER PLATES AN UPPER RESERVIOR, AN ENTRANCE PASSAGE AND A NARROW RESTRICTED EXIT PASSAGE TERMINATING IN AN ELONGATED NARROW RECTANGULAR ORIFICE LIP THE ENDS OF WHICH HAVE LATERAL BEAD-FORMING VERTICAL GROOVES OF SMALL CROSS-SECTION, TWO OF SAID GROOVES BEING SITUATED IN THE SAME INNER SURFACE OF AT LEAST ONE BLOCK AND EXTENDING INTO AND COMMUNICATING WITH SAID UPPER RESERVIOR; SAID FRONT BLOCK CARRYING TWO SPACED VERTICALLY-ADJUSTABLE, BEAD-CONTROLLING MEMBERS EACH EXTENDING INTO THE LOWER END OF ITS RESPECTIVE GROOVE TO VARY ITS DEPTH, AND AT LEAST ONE OF SAID BLOCKS CARRYING TWO VERTICALLY-ADJUSTABLE DAM MEMBERS HAVING CURVED-BOTTOM DOCTORING-SURFACES TO CONTROL THE FLASHING BEYOND SAID GROOVES OF AN EXTRUDED FILM.
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) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |