Patent ID: 9162088
Filing Date: 2015-10-20
Classification: A62B,Y10T

Abstract:
1. A method of assembling a supplied-air abrasive blast respirator, comprising: removably attaching an exhalation valve into an exhalation valve port of a facepiece; removably installing the facepiece into a hood; removably attaching one or more filter to one or more purified air inhalation valve, where the purified air inhalation valve is coupled to the facepiece; and removably attaching a breathing hose to a supplied air inhalation valve, where the supplied air inhalation valve is coupled to the facepiece; wherein the one or more filter and exhalation valve are located external to the hood; wherein the hood comprises a mask with openings corresponding to the exhalation valve, one or more purified air valve, and supplied air inhalation valve; and wherein installing the facepiece into a hood comprises inserting the facepiece into the hood: aligning the facepiece with the mask so that the openings in the mask match with the corresponding exhalation valve, one or more purified air valve, and supplied air inhalation valve; and fitting the facepiece to an inner surface of the mask so that the mask shields portions of the facepiece, while allowing the one or more filter, at least a portion of the exhalation valve, and the breathing hose attachment to the supplied air inhalation valve to be located on the facepiece external to the hood.