Rigid air ducting for respirator hoods and helmets
US7104264B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2004 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Mar 26, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B17/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A respirator hood 1 that has an air chamber 6 arranged above the head of a user for delivery of breathable air. The air chamber 6 has an air inlet 13 connected to an air supply hose 5 and an air outlet 17 The outlet 17 is arranged to direct air away from the eyes of the user. The air chamber 6 forms an air duct 12 that substantially covers the top of the hood 1 above the user's head. The duct 12 is collapse-resistant so that the duct shape is maintained in use and air flow through the duct 12 is 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.