Abrasive blast respirator

摘要

Embodiments relate to improvements for supplied-air abrasive blast respirators. Embodiments may comprise purified air via filters as a back-up air supply, with the filters typically operating automatically to provide purified air when the supplied air is compromised. Embodiments may locate elements outside of the hood to provide ready access for performing seal checks. Embodiments may incorporate noise reduction elements and/or lens protection elements as well.

主权项

1. A supplied-air respirator comprising:
a hood; a facepiece having a base lens, an inhalation valve, an exhalation valve, and at least one filter located thereon; and a facemask configured to fit over the facepiece and operable to shield at least portions of the facepiece from an abrasive blast environment; wherein the inhalation valve, exhalation valve, and at least one filter are located exterior to the hood, and thus not covered by the hood.