US2514841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for treating rubber
Assignee: Farrel Birmingham Co Inc
•
Filing: 1947-01-17
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Granted: 1950-07-11
•
Expires: 1967-01-17
Abstract
No abstract record available.
Inventors
- 👤 Donald C Chase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:29
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/42; B29B7/421; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/395; B29C48/50; B29C48/505; B29C48/51; B29C48/515; B29C48/56; B29C48/68; B29C48/685; B29C48/686; B29C48/78; B29C48/80; B29C48/84; B29C48/85; B29C48/86; B29C48/87; B29C48/03; B29C48/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
THE METHOD OF PLASTICIZING COMPOUNDED UNCURED RUBBER CONTAINING VULCANIZING INGREDIENTS, WHICH COMPRISES FORCING THE MATERIAL IN A THIN MASS FROM A HOPPER THROUGH A WORKING CHAMBER IN WORKING CONTACT PRIMARILY WITH THE CHAMBER WALL AND WITH LIMITED WORKING OF THE PARTICLES ON EACH OTHER AND IN A THIN MASS BETWEEN KNEADING SURFACES ONE OF WHICH MOVES RELATIVELY TO THE OTHER SO AS TO MAINTAIN THE RUBBER AT THE REQUIRED LOW TEMPERASTURE TO INHIBIT A VULCANIZING ACTION, THEN AS THE MATERIAL LEAVES THE KNEADING SURFACES PERMITTING LATERAL MOVEMENT OF THE PARTICLES AND SOAKING IN A SUITABLE USPACE FOR UNIFORM HEAT ABSORPTION AS THE RUBBER MOVES ALONG IN A GENERALLY TUBULAR MASSW WHICH INCREASES IN DIAMETER, THEN FORCING THE MATERIAL THROIUGH A GRADUALLY NARROWING SPACE TO FORM AND DISCHARGE A CONSIDERABLY THINNER TUBE, AND SUBJECTING THE RUBBER AS IT MOVES FROM SAID SOAKING SPACE TO THE DISCHARGE TO THE ACTION OF A TEMPERATURE-CONTROLLING FLUID TO KEEP THE TEMPERATURE BELOW THE VULCANIZING POINT.
Claim 2
Independent Claim
160 words
THE METHOD OF PLASTICIZING COMPOUNDED UNCURED RUBBER CONTAINING VULCANIZING INGREDIENTS, WHICH COMPRISES FORCING THE MATERIAL IN A THIN MASS FROM A HOPPER THROUGH A WORKING CHAMBER IN WORKING CONTACT PRIMARILY WITH THE CHAMBER WALL AND WITH LIMITED WORKING OF THE PARTICLES ON EACH OTHER AND IN A THIN MASS BETWEEN KNEADING SURFACES ONE OF WHICH MOVES RELATIVELY TO THE OTHER SO AS TO MAINTAIN THE RUBBER AT THE REQUIRED LOW TEMPERASTURE TO INHIBIT A VULCANIZING ACTION, THEN AS THE MATERIAL LEAVES THE KNEADING SURFACES PERMITTING LATERAL MOVEMENT OF THE PARTICLES AND SOAKING IN A SUITABLE USPACE FOR UNIFORM HEAT ABSORPTION AS THE RUBBER MOVES ALONG IN A GENERALLY TUBULAR MASSW WHICH INCREASES IN DIAMETER, THEN FORCING THE MATERIAL THROIUGH A GRADUALLY NARROWING SPACE TO FORM AND DISCHARGE A CONSIDERABLY THINNER TUBE, AND SUBJECTING THE RUBBER AS IT MOVES FROM SAID SOAKING SPACE TO THE DISCHARGE TO THE ACTION OF A TEMPERATURE-CONTROLLING FLUID TO KEEP THE TEMPERATURE BELOW THE VULCANIZING POINT.
References Cited (Backward Citations)
US1435659A
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US1876064A
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US1935050A
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US1947202A
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US2382504A
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US2411971A
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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) | 1953-07-10 | 1954-01-09 | 1954-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-10 | 1958-01-09 | 1958-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-10 | 1962-01-09 | 1962-07-11 | $7700.00 | Window Closed / Lapsed |