US 12,220,656 B1
Removable inner frame assembly for clean environments
James T. Crawford, III, Charlotte, NC (US); Edward W. Waters, Jr., Charlotte, NC (US); and Christopher Jacobs, Charlotte, NC (US)
Assigned to ThreeSquared Solutions L.L.C., Charlotte, NC (US)
Filed by ThreeSquared Solutions L.L.C., Charlotte, NC (US)
Filed on Sep. 6, 2024, as Appl. No. 18/826,471.
Claims priority of provisional application 63/569,253, filed on Mar. 25, 2024.
Int. Cl. B01D 29/13 (2006.01)
CPC B01D 29/13 (2013.01) [B01D 2271/02 (2013.01); B01D 2279/51 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A sealant layer configured to be applied to an inner frame associated with a filter element and a main frame, the inner frame having a plurality of sides and a bottom forming a u-shaped channel extending around a perimeter of the inner frame, the sealant layer comprising:
a substrate; and,
sealant embedded within the substrate, the bottom sealant layer configured to be affixed to a bottom surface of the bottom of the inner frame, the bottom sealant layer being configured to allow the inner frame to be releasably coupled to the main frame.