FILTERING FACE-PIECE RESPIRATOR HAVING ROUNDED PERIMETER

摘要

A filtering face-piece respirator 10 that includes a harness 14 and a mask body 12. First and second bond lines 30a, 30b are located on opposing sides of the mask body 12 and join a top portion 18 of the mask body 12 to the bottom portion 20. The first and second bond lines 30a, 30b extend from the frontal line of demarcation 22 to upper and lower perimeter segments 24a, 24b. The upper and lower perimeter segments 24a, 24b have an upper linear segment 32a and a lower linear segment 32b, respectively, located between first and second curved portions 34a, 34b. The first and second curved portions 34a, 34b each extend from the respective upper or lower linear segment 32a, 32b to the first and second bond lines 30a, 30b. The invention provides a more rounded finish to the mask body perimeter, which enables the mask body to exhibit a more comfortable fit.

主权项

1. A filtering face-piece respirator that comprises:
(a) a harness; and (b) a mask body that comprises a filtering structure that has a top portion, a bottom portion, an upper perimeter segment, a lower perimeter segment, a frontal line of demarcation, and first and second bond lines, the first and second bond lines being located on opposing sides of the mask body and joining the top portion of the mask body to the bottom portion, the first and second bond lines extending from the frontal line of demarcation to the upper and lower perimeter segments, the upper and lower perimeter segments, when the mask body is laid flat, comprising an upper linear segment and a lower linear segment, respectively, located between first and second curved portions located at opposing ends of the upper and lower linear segments, the first and second curved portions in each of the upper and lower perimeter segments each extending from the respective upper or lower linear segment to the first and second bond lines.