Apparatus for retreading tires
Abstract
Abstract The present invention is an apparatus for bonding a preshaped layer of retread stock to the periphery of a tire casing. A pair of mating shell members define a tire cavity and receive a tire assembly comprising the tire casing with attached tread stock. The tire assembly is positioned within an elastomeric envelope. A flexible air tube is positioned within the tire assembly in opposed relationship to the envelope. When the mating shell members are in a closed position, air seals are effected between the inner edges of the envelope and the tire beads. The air tube is pressurized to a predetermined pressure. The tire cavity is pressurized to a pressure below the predetermined pressure. The tire casing and its attached tread stock are held together tightly by the pressure forces. Heat is applied for bonding the retread stock to the tire casing.
Inventors
- 👤 C Barefoot
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |