US2686166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incorporating of rubber with bitumen in asphalt paving mixtures
Assignee: Individual
•
Filing: 1951-05-07
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Granted: 1954-08-10
•
Expires: 1971-05-07
Abstract
No abstract record available.
Inventors
- 👤 Taylor Norman Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:01
CPC Classifications
C; C08; C08L; C08L95/00; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A PROCESS FOR THE PRODUCTION OF DRY RUBBERIZED ASPHALT PAVING MIXTURES BY COATING AGGREGATE WITH LIQUIFIED BITUMEN AND THEN INCORPORATING STABLE LATEX, THE STEP OF INCORPORATING THE LATEX IN THE COATED AGGREGATE AT A TEMPERATURE OF ABOVE 100* C. AND BELOW 165* C., AND THE STEP OF DRIVING OFF WATER BY AGITATION AT BETWEEN THE SAME TEMPERATURE LIMITS, THE TEMPERATURE NOT BEING ALLOWED TO EXCEED 165* C. AFTER INCORPORATION OF THE LATEX, THE BITUMEN HAVING A PENETRATION AT 25* C. IN THE RANGE 40-200 AND THE LATEX BEING USED IN AN AMOUNT TO GIVE A RUBBER CONTENT, BASED ON THE BITUMEN, OF 2-6% BY WEIGHT, THE SMALLER RUBBER CONTENT CORRESPONDING TO THE MORE VISCOUS BITUMEN.
Claim 2
Dependent Claim
116 words
IN A PROCESS FOR THE PRODUCTION OF DRY RUBBERIZED ASPHALT PAVING MIXTURES BY COATING AGGREGATE WITH LIQUIFIED BITUMEN AND THEN INCORPORATING STABLE LATEX, THE STEP OF INCORPORATING THE LATEX IN THE COATED AGGREGATE AT A TEMPERATURE OF ABOVE 100* C. AND BELOW 165* C., AND THE STEP OF DRIVING OFF WATER BY AGITATION AT BETWEEN THE SAME TEMPERATURE LIMITS, THE TEMPERATURE NOT BEING ALLOWED TO EXCEED 165* C. AFTER INCORPORATION OF THE LATEX, THE BITUMEN HAVING A PENETRATION AT 25* C. IN THE RANGE 40-200 AND THE LATEX BEING USED IN AN AMOUNT TO GIVE A RUBBER CONTENT, BASED ON THE BITUMEN, OF 2-6% BY WEIGHT, THE SMALLER RUBBER CONTENT CORRESPONDING TO THE MORE VISCOUS BITUMEN.
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) | 1957-08-09 | 1958-02-08 | 1958-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-09 | 1962-02-08 | 1962-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-09 | 1966-02-08 | 1966-08-10 | $7700.00 | Window Closed / Lapsed |