US3243490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for molding in one-piece a spool, winding core, or the like
Assignee: Eastman Kodak Co
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Filing: 1962-09-17
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Granted: 1966-03-29
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Expires: 1982-09-17
Abstract
No abstract record available.
Inventors
- 👤 Lawrence A Ulmschneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:57
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/33; G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/321
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
213 words
A METHOD OF MOLDING A ONE-PIECE HOLLOW WINDING CORE HAVING APERTURED ENDS AND EXTERNAL SURFACES APPROXIMATELY DEFINING A RIGHT CYLINDER COMPRISING: FORMING A CLOSED CAVITY HAVING AN APPROXIMATELY CYLINDRICAL INTERNAL SURFACE WITH A FIRST AXIAL INWARD PROJECTION AT ONE END THEREOF AND A SECOND AXIAL INWARD PROJECTION AT THE OTHER END THEREOF AND A PLURALITY OF CORING PROJECTIONS CIRCUMFERENTIALLY AND AXIALLY OFFSET FROM ADJACENT CORING PROJECTIONS AND AXIALLY OFFSET FROM BOTH OF SAID ENDS, SAID CORING PROJECTIONS EXTENDING RADIALLY INTO SAID CAVITY; BRINGING A FIRST ONE OF SAID CORING PROJECTIONS INTO A POSITION WHEREIN A PORTION THEREOF LIES BETWEEN SAID AXIAL PROJECTIONS AND IS IN OVERLAPPING ENGAGEMENT WITH THE INNER END OF SAID FIRST AXIAL PROJECTION; BRINGING A SECOND ONE OF SAID CORING PROJECTIONS INTO A POSITION WHEREIN A PORTION THEREOF LIES BETWEEN SAID AXIAL PROJECTIONS AND IS IN OVERLAPPING ENGAGEMENT WITH THE INNER END OF SAID SECOND AXIAL PROJECTION; BRINGING SAID CORING PROJECTIONS INTO MUTUALLY OVERLAPPING ENGAGEMENT SO AS TO FORM A CONTINUOUS, FLUID-EXCLUDING CONFIGURATION EXTENDING AXIALLY OF SAID CAVITY AND CONTERMINOUS WITH AND OF GREATER DIAMETER THAN SAID AXIAL PROJECTIONS; FILLING SAID CAVITY WITH FLUID MOLDING MATERIAL; ALLOWING SAID MATERIAL TO SET; RADIALLY WITHDRAWING SAID CORING PROJECTIONS FROM SAID MOLDED MATERIAL; AND AXIALLY WITHDRAWING SAID AXIAL PROJECTIONS FROM SAID MOLDED MATERIAL.
Claim 2
Independent Claim
213 words
A METHOD OF MOLDING A ONE-PIECE HOLLOW WINDING CORE HAVING APERTURED ENDS AND EXTERNAL SURFACES APPROXIMATELY DEFINING A RIGHT CYLINDER COMPRISING: FORMING A CLOSED CAVITY HAVING AN APPROXIMATELY CYLINDRICAL INTERNAL SURFACE WITH A FIRST AXIAL INWARD PROJECTION AT ONE END THEREOF AND A SECOND AXIAL INWARD PROJECTION AT THE OTHER END THEREOF AND A PLURALITY OF CORING PROJECTIONS CIRCUMFERENTIALLY AND AXIALLY OFFSET FROM ADJACENT CORING PROJECTIONS AND AXIALLY OFFSET FROM BOTH OF SAID ENDS, SAID CORING PROJECTIONS EXTENDING RADIALLY INTO SAID CAVITY; BRINGING A FIRST ONE OF SAID CORING PROJECTIONS INTO A POSITION WHEREIN A PORTION THEREOF LIES BETWEEN SAID AXIAL PROJECTIONS AND IS IN OVERLAPPING ENGAGEMENT WITH THE INNER END OF SAID FIRST AXIAL PROJECTION; BRINGING A SECOND ONE OF SAID CORING PROJECTIONS INTO A POSITION WHEREIN A PORTION THEREOF LIES BETWEEN SAID AXIAL PROJECTIONS AND IS IN OVERLAPPING ENGAGEMENT WITH THE INNER END OF SAID SECOND AXIAL PROJECTION; BRINGING SAID CORING PROJECTIONS INTO MUTUALLY OVERLAPPING ENGAGEMENT SO AS TO FORM A CONTINUOUS, FLUID-EXCLUDING CONFIGURATION EXTENDING AXIALLY OF SAID CAVITY AND CONTERMINOUS WITH AND OF GREATER DIAMETER THAN SAID AXIAL PROJECTIONS; FILLING SAID CAVITY WITH FLUID MOLDING MATERIAL; ALLOWING SAID MATERIAL TO SET; RADIALLY WITHDRAWING SAID CORING PROJECTIONS FROM SAID MOLDED MATERIAL; AND AXIALLY WITHDRAWING SAID AXIAL PROJECTIONS FROM SAID MOLDED MATERIAL.
Claim 3
Dependent Claim
292 words
A MOLD FOR PRODUCING ONE-PIECE MOLDED CORE MEMBERS, SAID MOLD COMPRISING: A FIRST DIE PLATE; FIRST AND SECOND AND SECOND CHEEKER PLATES ADJACENT SAID FIRST DIE PLATE, EACH OF SAID CHEEKER PLATES BEING PROVIDED WITH AN ARCUATE RECESS; A SECOND DIE PLATE; SAID CHEEKER PLATES AND ONE OF SAID DIE PLATES BEING MOVABLE BETWEEN A CLOSED POSITION IN WHICH SAID CHEEKER PLATES ARE IN MUTUAL CONTACT AND IN CONTACT WITH BOTH OF SAID DIE PLATES, IN WHICH POSITION THE SURFACES DEFINING SAID RECESSES COOPERATE WITH SAID DIE PLATES TO DEFINE A CAVITY SUBSTANTIALLY CYLINDRICAL, AND AN OPEN POSITION IN WHICH SAID CHEEKER PLATES ARE SPACED FROM EACH OTHER AND FROM SAID SECOND DIE PLATE; A FIRST ARBOR ON SAID FIRST DIE PLATE; A SECOND ARBOR ON SAID SECOND DIE PLATE, SAID ARBORS BEING SO DISPOSED AS TO EXTEND INTO SAID CAVITY IN COAXIAL RELATION THERETO WHEN SAID MOLD IS IN SAID CLOSED POSITION; A FIRST TONGUE-LIKE MEMBER INTEGRAL WITH SAID FIRST CHEEKER PLATE AND PROJECTING FROM SAID FIRST CHEEKER PLATE IN THE RECESSED PORTION THEREOF; A SECOND TONGUE-LIKE MEMBER INTEGRAL WITH SAID SECOND CHEEKER PLATE AND PROJECTING FROM SAID SECOND CHEEKER PLATE IN THE RECESSED PORTION THEREOF; SAID TONGUELIKE MEMBERS EXTENDING RADIALLY INTO SAID CAVITY FROM OPPOSED DIRECTIONS IN OVERLAPPING CONTACTING RELATION WITH ONE ANOTHER BETWEEN SAID ARBORS WITH SAID FIRST TONGUE-LIKE MEMBER IN OVERLAPPING CONTACT WITH THE INNER END OF SAID FIRST ARBOR AND WITH SAID SECOND TONGUE-LIKE MEMBER IN OVERLAPPING CONTACT WITH THE INNER END OF SAID SECOND ARBOR WHEN SAID MOLD IS IN SAID CLOSED POSITION; WHEN SAID MOLD IS IN SAID CLOSED POSITION, SAID TONGUE-LIKE MEMBERS BEING OF SUCH CONFIGURATION AS TO OCCUPY A SPACE EXTENDING AXIALLY OF SAID CAVITY AND HAVING A DIAMETER LARGER THAN SAID ARBORS.
Claim 4
Dependent Claim
292 words
A MOLD FOR PRODUCING ONE-PIECE MOLDED CORE MEMBERS, SAID MOLD COMPRISING: A FIRST DIE PLATE; FIRST AND SECOND AND SECOND CHEEKER PLATES ADJACENT SAID FIRST DIE PLATE, EACH OF SAID CHEEKER PLATES BEING PROVIDED WITH AN ARCUATE RECESS; A SECOND DIE PLATE; SAID CHEEKER PLATES AND ONE OF SAID DIE PLATES BEING MOVABLE BETWEEN A CLOSED POSITION IN WHICH SAID CHEEKER PLATES ARE IN MUTUAL CONTACT AND IN CONTACT WITH BOTH OF SAID DIE PLATES, IN WHICH POSITION THE SURFACES DEFINING SAID RECESSES COOPERATE WITH SAID DIE PLATES TO DEFINE A CAVITY SUBSTANTIALLY CYLINDRICAL, AND AN OPEN POSITION IN WHICH SAID CHEEKER PLATES ARE SPACED FROM EACH OTHER AND FROM SAID SECOND DIE PLATE; A FIRST ARBOR ON SAID FIRST DIE PLATE; A SECOND ARBOR ON SAID SECOND DIE PLATE, SAID ARBORS BEING SO DISPOSED AS TO EXTEND INTO SAID CAVITY IN COAXIAL RELATION THERETO WHEN SAID MOLD IS IN SAID CLOSED POSITION; A FIRST TONGUE-LIKE MEMBER INTEGRAL WITH SAID FIRST CHEEKER PLATE AND PROJECTING FROM SAID FIRST CHEEKER PLATE IN THE RECESSED PORTION THEREOF; A SECOND TONGUE-LIKE MEMBER INTEGRAL WITH SAID SECOND CHEEKER PLATE AND PROJECTING FROM SAID SECOND CHEEKER PLATE IN THE RECESSED PORTION THEREOF; SAID TONGUELIKE MEMBERS EXTENDING RADIALLY INTO SAID CAVITY FROM OPPOSED DIRECTIONS IN OVERLAPPING CONTACTING RELATION WITH ONE ANOTHER BETWEEN SAID ARBORS WITH SAID FIRST TONGUE-LIKE MEMBER IN OVERLAPPING CONTACT WITH THE INNER END OF SAID FIRST ARBOR AND WITH SAID SECOND TONGUE-LIKE MEMBER IN OVERLAPPING CONTACT WITH THE INNER END OF SAID SECOND ARBOR WHEN SAID MOLD IS IN SAID CLOSED POSITION; WHEN SAID MOLD IS IN SAID CLOSED POSITION, SAID TONGUE-LIKE MEMBERS BEING OF SUCH CONFIGURATION AS TO OCCUPY A SPACE EXTENDING AXIALLY OF SAID CAVITY AND HAVING A DIAMETER LARGER THAN SAID ARBORS.
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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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |