US3258378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming ribbon of partially cured elastic threads
Assignee: United Elastic Corp
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Filing: 1962-02-19
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Granted: 1966-06-28
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Expires: 1982-02-19
Abstract
No abstract record available.
Inventors
- 👤 Winfield F Kelsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:33
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0078; B29C; B29C43/00; B29C43/22; D; D04; D04H; D04H3/00; D04H3/08; D04H3/16; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/731
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
173 words
IN A METHOD OF PRODUCING A RIBBON OF PARTIALLY CURED, ELASTIC THREADS WITHOUT OVERRIDING OF THREADS, BY EXTRUDING THE THREADS, MAINTAINING THEM SEPARATE, PARTIALLY CURING THEM UNTIL THEY ARE STILL SLIGHTLY TACKY, COATING THEM WITH A MINUTELY DISCONTINUOUS NONADHESIVE COATING AND ARRANGING THE THREADS IN THE FORM OF A RIBBON WITH THE THREADS CLOSELY ADJACENT TO EACH OTHER AND PASSING THE RIBBON THROUGH PRESSURE ROLLERS,THE IMPROVEMENT WHICH COMPRISES, (A) SEPARATING THE THREADS, AFTER COATING, ALONG THE HYPOTENUSE OF A RIGHT ANGLED TRIANGLE IN A PLANE PARALLEL TO THE PLANE OF A ROLLER AXIS AND SPACED THEREFROM, ONE SIDE OF THE TRIANGLE BEING A LINE PARALLEL TO A ROLLER AXIS, THE COSINE OF THE ANGLE OF THE HYPOTENUSE WITH SAID SIDE MULTIPLIED BY THREAD SPACINGS IS SUBSTANTIALLY EQUAL TO THREAD WIDTHS WHEREBY THE THREADS ARE FORMED INTO A FLAT RIBBON AND PASS IN SUCH FORM THROUGH THE ROLLERS, (B) APPLYING SUFFICIENT PRESSURE BY MEANS OF THE ROLLERS TO LATERALLY DEFORM THE THREADS OF THE RIBBON TO CAUSE PORTIONS OF THE DEFORMED THREADS TO EXTRUDE
Claim 2
Dependent Claim
173 words
IN A METHOD OF PRODUCING A RIBBON OF PARTIALLY CURED, ELASTIC THREADS WITHOUT OVERRIDING OF THREADS, BY EXTRUDING THE THREADS, MAINTAINING THEM SEPARATE, PARTIALLY CURING THEM UNTIL THEY ARE STILL SLIGHTLY TACKY, COATING THEM WITH A MINUTELY DISCONTINUOUS NONADHESIVE COATING AND ARRANGING THE THREADS IN THE FORM OF A RIBBON WITH THE THREADS CLOSELY ADJACENT TO EACH OTHER AND PASSING THE RIBBON THROUGH PRESSURE ROLLERS,THE IMPROVEMENT WHICH COMPRISES, (A) SEPARATING THE THREADS, AFTER COATING, ALONG THE HYPOTENUSE OF A RIGHT ANGLED TRIANGLE IN A PLANE PARALLEL TO THE PLANE OF A ROLLER AXIS AND SPACED THEREFROM, ONE SIDE OF THE TRIANGLE BEING A LINE PARALLEL TO A ROLLER AXIS, THE COSINE OF THE ANGLE OF THE HYPOTENUSE WITH SAID SIDE MULTIPLIED BY THREAD SPACINGS IS SUBSTANTIALLY EQUAL TO THREAD WIDTHS WHEREBY THE THREADS ARE FORMED INTO A FLAT RIBBON AND PASS IN SUCH FORM THROUGH THE ROLLERS, (B) APPLYING SUFFICIENT PRESSURE BY MEANS OF THE ROLLERS TO LATERALLY DEFORM THE THREADS OF THE RIBBON TO CAUSE PORTIONS OF THE DEFORMED THREADS TO EXTRUDE
Claim 3
Dependent Claim
47 words
A METHOD ACCORDING TO CLAIM 1 IN WHICH (A) THE EXTRUDED THREADS ARE PARTIALLY VULCANIZED EXTRUDED RUBBER THREADS, (B) THE THREADS ARE COATED WITH FINELY DIVIDED SOLIDS, AND (C) THE THREADS ARE STRETCHED BEFORE PRESSURE APPLICATION SUFFICIENTLY TO PRODUCE MINUTE DISCONTINUITIES IN THE COATING OF THE SOLIDS.
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |