Gauge for indicating exhaust time of air supply for scuba divers
Abstract
Abstract A WRIST-TYPE GUAGE FOR A SCUBA DIVER TO ENABLE THE SCUBA DIVER TO TAKE A DIRECT READING AS TO THE TIME REMAINING BEFORE THE EXHAUSTION OF THE AIR SUPPLY. TOWARD THIS END, THE GAUGE COMPRISES RELATIVELY ROTATABLE DISCS. ONE DISC IS CONNECTED TO THE AIR TANK AND IS DISPLACED ANGULARLY IN RESPONSE TO VARIATIONS IN AIR PRESSURE IN THE TANK. TIME REMAINING INDICIA ARE DISPOSED IN COLUMNS RADIALLY ON THE ONE DISC UNDER ASSOCIATED AIR PRESSURE MAGNITUDES. ANOTHER DISC HAS A RADIALLY DISPOSED OPENING TO EXPOSE A COLUMN OF RADIALLY ALIGNED TIME REMAINING INDICIA ON THE ONE DISC. ON THE OTHER DISC IS DISPOSED RADIALLY ALIGNED DEPTH INDICES ADJACENT AN OPENING. AN OPERATOR IS INFORMED OF THE DEPTH OF HIS LOCATION AND READS THROUGH THE OPENING THE EXPOSED TIME REMAINING FOR THE EXHAUSTION OF AIR IN THE TANK BY ALIGNING THROUGH RADIAL DISTANCE THE TIME REMAINING VALUE WITH THE SELECTED DEPTH OF LOCATION.
Inventors
- 👤 R Grant
Bibliographic Details
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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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |