Patent ID: 9222681
Filing Date: 2015-12-29
Classification: A62C,F24C

Abstract:
1. A device for arresting sparks or flames in a gas flow, the device comprising: (a) at least two spaced apart fire proof sheets, wherein each of the at least two spaced apart fire proof sheets are undulated having an equal wavelength with crests and troughs, and wherein the fire proof sheets have perforated zones, wherein a location of the perforated zones alternates for each fire proof sheet in succession of the at least two spaced apart fire proof sheets between a position near the crests of one fire proof sheet to a position near the troughs of an opposing fire proof sheet; (b) at least one channel permitting gas flow, the at least one channel formed by (i) a perforated zone of a one fire proof sheet upstream of the gas flow, (ii) the space between the at least two spaced apart fire proof sheets, and (iii) a perforated zone of another fire proof sheet downstream of the gas flow, and (c) wherein the channel at least partially redirects gas flow in a path different than a path of the gas flow prior to entering the channel, and wherein the gas flow exits the perforated zone of the fire proof sheet downstream of the gas flow.