Valve and membrane apparatus for recapping tire casings
Abstract
Abstract VALVED MEMBRANE APPARATUS FOR RECAPPING TIRES WITH PRE-FORMED TREAD STRIPS IN A PRESSURE CHAMBER. VALVES EXTERNALLY OF THE MEMBRANES COMMUNICATE TO AN INNER TUBE THE INCREASES AND DECREASES IN PRESSURE OF AIR WITHIN THE VULCANIZING CHAMBER, SO THAT THE TUBE APPLIES TO THE INNER SURFACE OF THE CASING A PRESSURE SUBSTANTIALLY THE SAME AS IS APPLIED TO THE OUTER CASING SURFACE BY THE MEMBRANESNO AIR-PRESSURE CONNECTION IS MADE FROM OUTSIDE THE CHAMBER TO THE INTERIOR OF THE INNER TUBE. TWO ELASTIC MEMBRANCES, HAVING MOLDED OUTER PORTIONS OVERLAPPING SEALEDLY AND FLAT CIRCULAR CENTRAL PORTIONS, ARE EVACUATED THROUGH A PASSAGE IN A SPACER BLOCK BETWEEN THE MEMBRANES. THE BLOCK ALSO HAS AN INFLATION PASSAGE TO WHICH THE EXTERNAL VALVES ARE CONNECTED THROUGH ONE MEMBRANE; THIS INFLATION PASSAGE OF THE SPACER BLOCK LEADS TO A PRESSURE HOSE CONNECTABLE TO THE INNER TUBE.
Inventors
- 👤 J Gross
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |