Inflatable ply turnup bladder for a tire building machine
Abstract
Abstract A ply turnup bladder for a tire building machine consists of a folded, specially dimensioned, all rubber sleeve which has been molded about a longitudinal axis of symmetry. The sleeve as molded has a uniform cross-section along any one plane normal to its axis and comprises an axially extending outer bladder wall portion of major outside diameter and an axially extending inner wall portion of minor outside diameter, which portions are integrally joined by an annular or circular "fold point." The terminal portions of the sleeve are substantially thickened rings or flanges used to mount the sleeve on a rigid, annular bladder support. The cross-section of the outer bladder wall portion of the sleeve preferably varies in thickness in the axial direction attaining maximum thickness near the fold point of the sleeve. Turnup bladders of this type are structurally simpler, less expensive, and longer lasting than many bladders presently in use.
Inventors
- 👤 Virgil E Henley
- 👤 Walter W Lauer
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |