Combustion – Flash-back controlling or preventing structure
Reexamination Certificate
2006-06-06
2006-06-06
Basichas, Alfred (Department: 3749)
Combustion
Flash-back controlling or preventing structure
C431S328000
Reexamination Certificate
active
07056114
ABSTRACT:
A combination of a flame arrestor with a reflection suppressor is provided which not only arrests an advancing flame front, but also suppresses or mitigates a reflection wave that is generated by a pressure wave that passes through the combination and continues on to a pipe restriction what generates a reflection wave that proceeds back to the combination. At the combination, the reflection suppressor suppresses and/or mitigates the reflection wave, thereby avoiding a heightened pressure in the combination that could cause a re-ignition and a new flame front and pressure front. The reflection suppressor has a tapered profile that permits a pressure wave to pass along and past the reflection suppressor as it leaves the combination but that impedes and mitigates a returning reflection wave produced by the pressure wave striking a pipe restriction and causing such a returning reflection wave.
REFERENCES:
patent: 1681698 (1928-08-01), Brooks
patent: 2420599 (1947-05-01), Jurs
patent: 3748111 (1973-07-01), Klose
patent: 4909730 (1990-03-01), Roussakis et al.
patent: 5415233 (1995-05-01), Roussakis et al.
patent: 6644961 (2003-11-01), Brooker
patent: 1057187 (1979-06-01), None
Perry's Chemical Engineers' Handbook, 7th Ed. 1997 pp. 26-38 to 26-43.
Basichas Alfred
Olson & Hierl Ltd.
The Protectoseal Company
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