US3325326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for recapping tires with prevulcanized profile treads
Assignee: Individual
•
Filing: 1964-05-04
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Granted: 1967-06-13
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Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 Schelkmann Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:51
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/54; B29D30/542; B29D30/56; B29D2030/545; B29D30/58; B29D2030/582; Y; Y10; Y10S; Y10S156/00; Y10S156/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
219 words
A METHOD OF RECAPPING TIRES WITH PREVULCANIZED PROFILED TREADS COMPRISING THE STEPS OF FORMING AN ASSEMBLY CONSISTING ESSENTIALLY OF A TIRE, A PROFILED TREAD SUPERIMPOSED UPON THE OUTER SURFACE OF THE TIRE, AND A LAYER OF BINDER MATERIAL SANDWICHED BETWEEN THE OUTER TIRE SURFACE AND SAID TREAD; WRAPPING A SINGLE FLEXIBLE COVER SHEET OVER SAID ASSEMBLY SO THAT SAID COVER SHEET FORMS A CLOSED WRAPPER ENCLOSING ALL COMPONENT OF SAID ASSEMBLY; REMOVING AIR FORM SAID CLOSED WRAPPER SO THAT SUB-ATMOSPHERIC PRESSURE WILL BE ESTABLISHED WITHIN SAID CLOSED WRAPPER AND COMPONENTS WILL BE PRESSED BY ATMOSPHERIC PRESSURE SUBSTANTIALLY WITHOUT CLEARANCE AGAINST EACH OTHER WHILE ALL AIR ENCLOSURES BETWEEN SAID SUPERIMPOSED TIRE, TREAD AND LAYER OF BINDER MATERIAL WILL BE REMOVED; SUBJECTING THE ASSEMBLY IN SAID CLOSED WRAPPER TO HEAT AND GRADUALLY INCREASING OUTER PRESURE BEYOND ATMOSPHERIC PRESURE TO CAUSE SAID LAYER OF BINDER MATERIAL TO PERMANENTLY BOND SAID TREAD TO SAID TIRE SURFACE; AND SIMULTANEOUSLY INCREASING THE PRESSURE INSIDE SAID WRAPPER FORM SAID SUB-ATMOSPHERIC PRESURE TO A PRESSURE BEING SUBSTANTIALLY 1 KG. PER CM.2 LOWER THAN SAID OUTER PRESSURE SO AS TO MAINTAIN DURING SAID LAST-MENTIONED STEP A PRESSURE DIFFERENCE OF SUBSTANTIALLY 1 KG. PER CM.**2 BETWEEN THE INNER AND OUTER SURFACE OF SAID SHEET SO AS TO AVOID DISTORTION OF SAID PROFILED TREAD DURING SAID TREATING OF THE ASSEMBLY.
Claim 2
Independent Claim
219 words
A METHOD OF RECAPPING TIRES WITH PREVULCANIZED PROFILED TREADS COMPRISING THE STEPS OF FORMING AN ASSEMBLY CONSISTING ESSENTIALLY OF A TIRE, A PROFILED TREAD SUPERIMPOSED UPON THE OUTER SURFACE OF THE TIRE, AND A LAYER OF BINDER MATERIAL SANDWICHED BETWEEN THE OUTER TIRE SURFACE AND SAID TREAD; WRAPPING A SINGLE FLEXIBLE COVER SHEET OVER SAID ASSEMBLY SO THAT SAID COVER SHEET FORMS A CLOSED WRAPPER ENCLOSING ALL COMPONENT OF SAID ASSEMBLY; REMOVING AIR FORM SAID CLOSED WRAPPER SO THAT SUB-ATMOSPHERIC PRESSURE WILL BE ESTABLISHED WITHIN SAID CLOSED WRAPPER AND COMPONENTS WILL BE PRESSED BY ATMOSPHERIC PRESSURE SUBSTANTIALLY WITHOUT CLEARANCE AGAINST EACH OTHER WHILE ALL AIR ENCLOSURES BETWEEN SAID SUPERIMPOSED TIRE, TREAD AND LAYER OF BINDER MATERIAL WILL BE REMOVED; SUBJECTING THE ASSEMBLY IN SAID CLOSED WRAPPER TO HEAT AND GRADUALLY INCREASING OUTER PRESURE BEYOND ATMOSPHERIC PRESURE TO CAUSE SAID LAYER OF BINDER MATERIAL TO PERMANENTLY BOND SAID TREAD TO SAID TIRE SURFACE; AND SIMULTANEOUSLY INCREASING THE PRESSURE INSIDE SAID WRAPPER FORM SAID SUB-ATMOSPHERIC PRESURE TO A PRESSURE BEING SUBSTANTIALLY 1 KG. PER CM.2 LOWER THAN SAID OUTER PRESSURE SO AS TO MAINTAIN DURING SAID LAST-MENTIONED STEP A PRESSURE DIFFERENCE OF SUBSTANTIALLY 1 KG. PER CM.**2 BETWEEN THE INNER AND OUTER SURFACE OF SAID SHEET SO AS TO AVOID DISTORTION OF SAID PROFILED TREAD DURING SAID TREATING OF THE ASSEMBLY.
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |