Tire retreading apparatus with tread and sidewall forming roll
Abstract
Abstract RETREADING OF TIRES IS ACCOMPLISHED WITH TREAD STOCK PRODUCED BY A FORMING ROLL. THE TREAD STOCK FORMED BY THE FORMING ROLL IS APPLIED TO A TIRE CARCASS BY A TIRE BUILDING MACHINE, WITH THE TREAD STOCK FORMING APPARATUS AND TIRE BUILDING APPARATUS CONSTITUTING ONE RETREADING UNIT. WITH THIS ARRANGEMENT, IT IS NO LONGER NECESSARY TO PURCHASE TREAD STOCK FROM OUTSIDE SOURCES, WHICH STOCK IS RELATIVELY EXPENSIVE AND MAY BE OF NON-UNIFORM, LOWER QUALITY. ROLL-FORMING OF THE TREAD STOCK REQUIRES RELATIVELY INEXPENSIVE APPARATUS AND THE START-UP TIME INVOLVED IS RELATIVELY SHORT. THE FORMING ROLL USED FOR THE TREAD STOCK ALSO IS ADJUSTABLE AND CAN BE RELATIVELY QUICKLY ADJUSTED FOR VARIOUS SIZES OF TREAD STOCK INCLUDING WIDTHS AND THICKNESSES.
Inventors
- 👤 Donno W Cooper
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |