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Patent US4113186A successfully refreshed from Google Patents.
US4113186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire grinding system
Assignee: Farrel Corp
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Filing: 1977-01-18
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Granted: 1978-09-12
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Expires: 1997-01-18
Abstract
Abstract A system for treating rubber tires which reduces the tires to a particulate agglomeration wherein cord and rubber matter therein can be separated. A further treating of those rubber particles reduces them to screen size. The system requires the steps of: (a) initially debeading the tire; (b) cutting the tire into chunks; (c) regulating the quantity of chunks as they pass through the system; (d) grinding the tire in a high intensity mixer; (e) passing the grind to a hammer mill to loosen the rubber and the cord from one another; (f) separating the rubber particles out in a separator, and (g) then grinding the rubber particles to a size of about 30 to 100 mesh as a final product. Oversized pieces of rubber discharged from the separator near the end of the system would be returned to the high intensity mixer.
Inventors
- 👤 George William Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:35
CPC Classifications
B; B29; B29B; B29B17/00; B29B17/02; B29B17/04; B29B17/0404; B29B17/0412; B29B2017/0213; B29B2017/0217; B29B2017/0224; B29B2017/0268; B29B2017/0272; B29B2017/0424; B29B2017/0488; B29K; B29K2021/00; B29L; B29L2030/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/52; Y02W30/62; Y10; Y10S; Y10S241/00; Y10S241/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
246 words
A process for treating rubber tires to break them down to a reduced size comprising: debeading the inside rims of the tires; transferring the tires to a granulator; granulating the tires into chunks of tires of about 2.5 cm. in breadth; transferring the chunks of tires to a holding unit and feeder arrangement; feeding said chunks of tires to a weight unit; weighing said chunks of tires to reach a predetermined quantity of from about 100 to about 500 pounds; transferring said predetermined quantity of chunks of tires to a high intensity mixing machine; grinding said chunks of tires in said high intensity mixing machine into smaller tire particles of about a 30 mesh size; separating magnetically any metal from the 30 mesh size particles; transferring said smaller tire particles into a hammer mill; beating said smaller tire particles in said hammer mill, loosening the rubber portions and cord portions of said particles from one another; transferring said loosened rubber portions and cord portions of said particles to a separating machine; separating magnetically any metal a second time from the loosened tire portions; separating small rubber particles from cord particles through several layers of vibrating screens; directing any oversize tire particles back to said mixing machine; transferring said small rubber particles to a grinder; separating magnetically any metal a third time from the small rubber particles; and grinding said small rubber particles into a fine grind rubber product of up to about a 100 mesh size.
Claim 2
Dependent Claim
246 words
A process for treating rubber tires to break them down to a reduced size comprising: debeading the inside rims of the tires; transferring the tires to a granulator; granulating the tires into chunks of tires of about 2.5 cm. in breadth; transferring the chunks of tires to a holding unit and feeder arrangement; feeding said chunks of tires to a weight unit; weighing said chunks of tires to reach a predetermined quantity of from about 100 to about 500 pounds; transferring said predetermined quantity of chunks of tires to a high intensity mixing machine; grinding said chunks of tires in said high intensity mixing machine into smaller tire particles of about a 30 mesh size; separating magnetically any metal from the 30 mesh size particles; transferring said smaller tire particles into a hammer mill; beating said smaller tire particles in said hammer mill, loosening the rubber portions and cord portions of said particles from one another; transferring said loosened rubber portions and cord portions of said particles to a separating machine; separating magnetically any metal a second time from the loosened tire portions; separating small rubber particles from cord particles through several layers of vibrating screens; directing any oversize tire particles back to said mixing machine; transferring said small rubber particles to a grinder; separating magnetically any metal a third time from the small rubber particles; and grinding said small rubber particles into a fine grind rubber product of up to about a 100 mesh size.
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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |