초록 ▼

A filter support that includes two or more first support ribs on a first side of the filter support is disclosed. The first support ribs are generally aligned along a longitudinal axis. The filter support also includes two or more second support ribs on a second side of the filter support, where the

A filter support that includes two or more first support ribs on a first side of the filter support is disclosed. The first support ribs are generally aligned along a longitudinal axis. The filter support also includes two or more second support ribs on a second side of the filter support, where the filter support's second side is opposite from the first side. The second support ribs are also generally aligned along the longitudinal first axis. At least one of the first support ribs is laterally offset from each of the second support ribs along a transverse axis that is generally perpendicular to the longitudinal axis. The filter support provides support to opposing sides of a filter bag or opposing individual filter elements. Also disclosed are a filter assembly including a filter and a filter support, along with a helmet-mounted powered air purifying respirator in which the filter assembly is located within the helmet crown.

대표청구항 ▼

[ What is claimed is:] [1.]1. 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 betw

[ What is claimed is:] [1.]1. 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.