Flame arrestor
Abstract
Abstract A FLAME ARRESTOR FOR FLAMMABLE GAS VENTS PROVIDED WITH A MECHANICAL MEANS FOR DIVING A SINGLE PROPAGATING FLAME INTO AT LEAST TWO FRONTS. THE MECHANICAL MEANS MAY COMPRISE A SUBSTANTIALLY CONCENTRICALLY POSITIONED SHORTER TUBE DISPOSED WITHIN A HOOD TUBE. FLAME PROPAGATION IN THE CONCENTRIC TUBE ACCELERATES FASTER THAN IN THE HOOD TUBE AND WILL MOVE THROUGH THE SHORT TUBE AND BACK INTO THE HOOD TUBE AHEAD OF TH SLOWER-TRAVELING FLAME FRONT IN THE HOOD TUBE SO THAT A BACK FIRE IS CREATED FOR THE HOOD TUBE FLAME FRONT. AN ABSENCE OF FLAMMABLE GAS SUPPLY IS CREATED FOR THE HOOD FLAME FRONT AND NONBURNABLE INERT GASES ARE SUPPLIED INSTEAD SO THAT BOTH FLAME FRONTS AUTOMATICALLY EXTINGUISH.
Inventors
- 👤 W Klose
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |