Spark arrestor
Abstract
Abstract AN INVERTED V-SHAPED ENCLOSURE WITH PERFORATE WALLS IS MOUNTED ABOVE THE EXHAUST STACK OF A DIESEL-POWERED UNIT OF A RAILROAD LOCOMOTIVE, IT HAS AN OPEN-BOTTOM, CLOSEDTOP CONDUIT AT THE APEX THEREOF, AND IT HAS INTERNALLYBAFFLED RETENTION BINS AT THE OPPOSITE ENDS OF THAT CONDUIT. ANY CARBONACEOUS PARTICLES, WHICH THE GRAIN SIZE OR LARGER AND WHICH MAY BREAK AWAY FROM THE EXHAUST STACK UNDER FULL THROTTLE CONDITION, WILL BE GUIDED UPWARDLY INTO THE CONDUIT BY THE PERFORATE WALLS OF THE INVERTED VSHAPED ENCLOSURE, AND WILL THEN BE FORCED INTO THE RETENTION BINS BY EXHAUST GASES AND VAPORS WHICH MOVE THROUGH, AND TOWARD THE OPPOSITE ENDS OF, THE CONDUIT. IN THOSE RETENTION BINS, THOSE CARBONACEOUS PARTICLES WILL BE SWIRLED AROUND BY THE INTERACTION OF THE BAFFLES AND THE EXHAUST GASES AND VAPORS, AND WILL REPEATEDLY STRIKE EACH OTHER AND THOSE BAFFLES UNTIL THEY ARE GROUND INTO POWDER.
Inventors
- 👤 Edward F Heaton Jr
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |