Valve for an inflatable life-jacket
Abstract
Abstract A VALVE COMPRISES AN OUTER TUBE, AN INNER TUBE EXTENDING THEREINTO AND HAVING A FIRST APERTURE IN THE REGION INSIDE THE OUTER TUBE, AND A SPRING ACTING TO URGE THE INNER TUBE INTO THE OUTER TUBE, THE INNER TUBE BEING AXIALLY MOVABLE AGAINST THE ACTION OF THE SPRING TO A RETRACTED POSITION IN WHICH A FIRST SEAL IS FORMED PREVENTING GAS FROM ESCAPING FROM THE OUTER TUBE OVER THE SURFACE OF THE INNNER TUBE WHILE ALLOWING GAS TO PASS FROM THE OUTER TUBE OF THE INNER TUBE THROUGH THE FIRST APERTURE AND BEING AXIALLY RETURNABLE FROM THE RETRACTED POSITION BY THE ACTION OF THE SPRING TO A FORWARD POSITION IN WHICH A SECOND SEAL IS FORMED PREVENTING GAS FROM ESCAPING FROM THE OUTER TUBE TO THE INNER TUBE AND THE SURROUNDINGS, THE INNER TUBE BEING PROVIDED WITH A SECOND APERTURE IN ITS SIDE WALL IN THE REGION EXTENDING BEYOND THE OUTER TUBE, THE SECOND APERTURE HAVING A NON-RETURN VALVE THEREIN FOR ALLOWING GAS TO ESCAPE FROM THE INNER TUBE TO THE SURROUNDINGS. THE VALVE IS SUITABLE FOR USE WITH A DIVER''S LIFE JACKET AND ENABLES THE DIVER TO BREATH FROM THE INFLATED JACKET IN AN EMERGENCY.
Inventors
- 👤 George W R Cooke
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |