Rigid air ducting for respirator hoods and helmets

Details Rigid air ducting for respirator hoods and helmets Rigid air ducting for respirator hoods and helmets

2006-09-12

2006-09-12

Mitchell, Teena (Department: 3743)

Surgery

Respiratory method or device

Including body or head supported means covering user's scalp

C128S201240, C002S171300

Reexamination Certificate

active

07104264

ABSTRACT:
A respirator hood1that has an air chamber6arranged above the head of a user for delivery of breathable air. The air chamber6has an air inlet13connected to an air supply hose5and an air outlet17The outlet17is arranged to direct air away from the eyes of the user. The air chamber6forms an air duct12that substantially covers the top of the hood1above the user's head. The duct12is collapse-resistant so that the duct shape is maintained in use and air flow through the duct12is substantially unrestricted. As a result, a substantially uniform air flow can be achieved in use, which air flow pattern is repeatable from day to day and from hood to hood.

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