Patent ID: 6279570
Filing Date: 2001-08-28
Classification: A62B,B01D,Y10S

Abstract:
A powered air purifying respirator comprising:a helmet comprising a crown space;a filter assembly located within the crown space of the helmet, the filter assembly comprising a filter and a filter support, the filter support comprising a longitudinal axis extending between an input end and a terminal end, the filter support further comprising:two or more first support ribs on a convex first side of the filter support, each of the first support ribs being generally aligned with the longitudinal axis of the filter support; andtwo or more second support ribs on a concave second side of the filter support, the concave second side being opposite the convex first side of the filter support and each of the second support ribs being generally aligned with the longitudinal axis;wherein at least one of the first support ribs is laterally offset from each of the second support ribs along a transverse axis that is transverse to the longitudinal axis.