US3858636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycarbonamide reinforced non-flatspotting tires having yarns penetrated with aliphatic organic, hydroxylated plasticizer and their manufacture
Assignee: Bridgestone Firestone Inc
•
Filing: 1972-10-25
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Granted: 1975-01-07
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Expires: 1992-10-25
Abstract
Abstract Tires which are substantially non-flatspotting are reinforced with nylon cord treated with aliphatic hydroxylated plasticizer, which cords are stretched while heating, and the tires are thereby made substantially non-flatspotting.
Inventors
- 👤 Richard W Kibler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:33
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; B; B29; B29D; B29D30/00; B29D30/06; B29D30/38; B29D30/40; D; D02; D02G; D02G3/00; D02G3/44; D02G3/48; C08J2321/00; D10; D10B; D10B2331/00; D10B2331/02; Y; Y10; Y10S; Y10S57/00; Y10S57/902; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10855
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
THE METHOD FOR PRODUCING A POLYCARBONAMIDE REINFORCED NON-FLATSPOTTING VEHICLE TIRE WHICH COMPRISES THE STEPS OF (1) PROVIDING A POLYCARBONAMIDE TIRE CORD HAVING A TOTAL DENIER OF 1,680 TO 2,000 AND HAVING THE YARNS WHICH MAKE UP THE CORD PENETRATED WITH AN ALIPHATIC ORGANIC, HYDROXYLATED PLASTICIZER, AND IN AN AMOUNT SUFFICIENT TO DECREASE THE CORD MODULUS OF THE CORD TO LESS THAN 75 PERCENT OF THE UNTREATED MATERIAL, (2) SUBJECTING SAID CORD TO SUFFICIENT TENSION TO STRETCH SAID CORD TO PREVENT SUBSTANTIAL LOSS OF FIBER ORIENTATION WHILE HEATING SAID CORD TO A TEMPERATURE OF 100* TO 160*C., (3) THEREAFTER EMBEDDING SAID CORD INTO RUBBER PLIES AND (4) FABRICATING A RUBBER VEHICLE TIRE FROM SAID PLIES.
Claim 2
Independent Claim
114 words
THE METHOD FOR PRODUCING A POLYCARBONAMIDE REINFORCED NON-FLATSPOTTING VEHICLE TIRE WHICH COMPRISES THE STEPS OF (1) PROVIDING A POLYCARBONAMIDE TIRE CORD HAVING A TOTAL DENIER OF 1,680 TO 2,000 AND HAVING THE YARNS WHICH MAKE UP THE CORD PENETRATED WITH AN ALIPHATIC ORGANIC, HYDROXYLATED PLASTICIZER, AND IN AN AMOUNT SUFFICIENT TO DECREASE THE CORD MODULUS OF THE CORD TO LESS THAN 75 PERCENT OF THE UNTREATED MATERIAL, (2) SUBJECTING SAID CORD TO SUFFICIENT TENSION TO STRETCH SAID CORD TO PREVENT SUBSTANTIAL LOSS OF FIBER ORIENTATION WHILE HEATING SAID CORD TO A TEMPERATURE OF 100* TO 160*C., (3) THEREAFTER EMBEDDING SAID CORD INTO RUBBER PLIES AND (4) FABRICATING A RUBBER VEHICLE TIRE FROM SAID PLIES.
Claim 3
Dependent Claim
11 words
The rubber vehicle tire produced by the method of claim 1.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein the polycarbonamide tire cord is polyhexamethylene adipamide.
Claim 5
Dependent Claim
9 words
The tire produced by the method of claim 3.
Claim 6
Dependent Claim
13 words
The method of claim 3 wherein the organic hydroxylated plasticizer is trimethylene glycol.
Claim 7
Dependent Claim
9 words
The tire produced by the method of claim 5.
Claim 8
Dependent Claim
12 words
The method of claim 3 wherein the organic hydroxylated plasticizer is glycerol.
Claim 9
Dependent Claim
9 words
The tire produced by the method of claim 7.
References Cited (Backward Citations)
US3140947A
Cited
US3388029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |