Patent US3189506A successfully refreshed from Google Patents.
US3189506A
Expired / Lapsed
US
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Method and apparatus for forming continuous filament filter rods
Assignee: Eastman Kodak Co
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Filing: 1962-04-12
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Granted: 1965-06-15
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Expires: 1982-04-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Phara L Cobb
- 👤 Melvin R Hargrave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:49
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/02; A24D3/0204; A24D3/0212; A24D3/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A METHOD FOR THE MANUFACTURE OF ROD-LIKE ELEMENTS COMPRISED OF A CORE OF ALIGNED, CRIMPED, CONTINUOUS FILAMENTS ARRANGED IN SUBSTANITALLY PARALLEL RELATIONSHIP AND GENERALLY PARALLEL TO THE AXIS OF THE ROD COMPRISING HEATING THE ROD TO COALESCE THE FILAMENTS AND SUBSEQUENTLY AFTER SHAPING INTO ROD-LIKE FORM FORMING A FUSED SHEATH FROM THE EXTERNAL FILAMENTS BY HEATING, THE STEP WHICH COMPRISES HEATING THE FILAMENTS TO COALESCE THEM DURING THE INTRODUCING OF HOT GASES TO AN ANNULUS SURROUNDING THE FILAMENTS SHAPED IN ROD-LIKE FORM AND PROJECTING HOT GASES THROUGH A PLURALITY OF HOLES IN SAID ANNULUS POSITIONED SOMEWHAT OFF-CENTER AND ON A TANGENT ANGULARLY AGAINST AND INTO THE BUNDLE OF FILAMENTS IN ROD-LIKE FORM PASSING THROUGH AND SURROUNDED BY THE ANNULUS.
Claim 2
Dependent Claim
120 words
IN A METHOD FOR THE MANUFACTURE OF ROD-LIKE ELEMENTS COMPRISED OF A CORE OF ALIGNED, CRIMPED, CONTINUOUS FILAMENTS ARRANGED IN SUBSTANITALLY PARALLEL RELATIONSHIP AND GENERALLY PARALLEL TO THE AXIS OF THE ROD COMPRISING HEATING THE ROD TO COALESCE THE FILAMENTS AND SUBSEQUENTLY AFTER SHAPING INTO ROD-LIKE FORM FORMING A FUSED SHEATH FROM THE EXTERNAL FILAMENTS BY HEATING, THE STEP WHICH COMPRISES HEATING THE FILAMENTS TO COALESCE THEM DURING THE INTRODUCING OF HOT GASES TO AN ANNULUS SURROUNDING THE FILAMENTS SHAPED IN ROD-LIKE FORM AND PROJECTING HOT GASES THROUGH A PLURALITY OF HOLES IN SAID ANNULUS POSITIONED SOMEWHAT OFF-CENTER AND ON A TANGENT ANGULARLY AGAINST AND INTO THE BUNDLE OF FILAMENTS IN ROD-LIKE FORM PASSING THROUGH AND SURROUNDED BY THE ANNULUS.
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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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |