Patent ID: 6732733
Filing Date: 2004-05-11
Classification: A41D,A62B

Abstract:
A half-mask respirator that comprises:a half-mask respirator body configured to cover the nose and mouth of the wearer; a strap support located on the wearer's skull when the respirator body is in position over the nose and mouth of the wearer; at least two upper straps that extend from opposite sides of an upper portion of the respirator body to opposing sides of the strap support, the upper straps connected to the strap support at upper strap attachment points; and at least two lower straps that extend from opposite sides of a lower portion of the respirator body to opposing sides of the strap support, the lower straps connected to the strap support at lower strap attachment points, wherein the at least two lower straps do not extend around the back of the wearer's neck; wherein the distances between the upper and lower strap attachment points on each opposing side of the strap support are fixed when the strap support is located on the wearer's skull and the respirator body is in position over the nose and mouth of the wearer; wherein the distances between the upper and lower strap attachment points on each opposing side of the support crown are fixed when the respirator body is in position over the nose and mouth of the wearer; and wherein the support crown comprises an adjustment mechanism, wherein the distances between the lower strap attachment points on opposite sides of the support crown are adjustable.