US2658092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber processing
Assignee: Uniroyal Inc
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Filing: 1951-03-30
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Granted: 1953-11-03
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Expires: 1971-03-30
Abstract
No abstract record available.
Inventors
- 👤 Bernard C Barton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:56
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/07; C08K5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A METHOD OF MANUFACTURING RUBBER PRODUCTS HAVING LOW TORISONAL HYSTERESIS AND HIGH ELECTRICAL RESISTIVITY WHICH COMPRISES INCORPORATING A SMALL AMOUNT OF CHLORANIL IN A WELL-BLENDED MIXTURE OF RUBBER AND A RUBBER-REINFORCING CARBON BLACK AT A TEMPERATURE SUBSTANTIALLY BELOW 250* F., SAID TEMPERATURE BEING SO LOW AS TO PREVENT THERMAL DECOMPOSITION OF SAID CHLORANIL AND TO PREVENT REACTION OF SAID CHLORANIL WITH THE RUBBER, SUBSEQUENTLY HEAT-TREATING THE MIXTURE CONTAINING SAID CHLORANIL AT A TEMPERATURE SUBSTANTIALLY ABOVE 250* F. BUT INSUFFICIENTLY ELEVATED TO SUBSTANTIALLY INJURE THE PROPERTIES OF THE RUBBER, CONTINUING SAID HEAT-TREATING FOR A TIME SUFFICIENT TO SUBSTANTIALLY LOWER THE TORSIONAL HYSTERESIS AND SUBSTANTIALLY INCREASE THE ELECTRICAL RESISTIVITY OF A VULCANIZATE OF THE RESULTING MIXTURE, SAID HEATTREATING STEP BEING CONDUCTED IN THE ABSENCE OF INGREDIENTS CAPABLE OF VULCANIZING RUBBER OTHER THAN SAID CHLORANIL, MASTICATING THE MIXTURE AND INCORPORATING VULCANIZING AND OTHER DESIRED INGREDIENTS, SHAPING THE MIXTURE AND VULCANIZING THE SHAPED MIXTURE.
Claim 2
Independent Claim
150 words
A METHOD OF MANUFACTURING RUBBER PRODUCTS HAVING LOW TORISONAL HYSTERESIS AND HIGH ELECTRICAL RESISTIVITY WHICH COMPRISES INCORPORATING A SMALL AMOUNT OF CHLORANIL IN A WELL-BLENDED MIXTURE OF RUBBER AND A RUBBER-REINFORCING CARBON BLACK AT A TEMPERATURE SUBSTANTIALLY BELOW 250* F., SAID TEMPERATURE BEING SO LOW AS TO PREVENT THERMAL DECOMPOSITION OF SAID CHLORANIL AND TO PREVENT REACTION OF SAID CHLORANIL WITH THE RUBBER, SUBSEQUENTLY HEAT-TREATING THE MIXTURE CONTAINING SAID CHLORANIL AT A TEMPERATURE SUBSTANTIALLY ABOVE 250* F. BUT INSUFFICIENTLY ELEVATED TO SUBSTANTIALLY INJURE THE PROPERTIES OF THE RUBBER, CONTINUING SAID HEAT-TREATING FOR A TIME SUFFICIENT TO SUBSTANTIALLY LOWER THE TORSIONAL HYSTERESIS AND SUBSTANTIALLY INCREASE THE ELECTRICAL RESISTIVITY OF A VULCANIZATE OF THE RESULTING MIXTURE, SAID HEATTREATING STEP BEING CONDUCTED IN THE ABSENCE OF INGREDIENTS CAPABLE OF VULCANIZING RUBBER OTHER THAN SAID CHLORANIL, MASTICATING THE MIXTURE AND INCORPORATING VULCANIZING AND OTHER DESIRED INGREDIENTS, SHAPING THE MIXTURE AND VULCANIZING THE SHAPED MIXTURE.
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) | 1956-11-02 | 1957-05-04 | 1957-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-02 | 1961-05-04 | 1961-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-02 | 1965-05-04 | 1965-11-03 | $7700.00 | Window Closed / Lapsed |