Respiratory hood
US6834646B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2001 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Apr 2, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62B17/04
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A positive-pressure respirator hood assembly comprising, a gas-impermeable hood made of a flexible material, formed with at least a transparent visor portion; a gas treatment unit, comprising a filter and a power-operated blower to force air through the filter and generate a positive pressure within the hood; a one-way purge valve for facilitating the exhaust of exhaled gases and moisture from the hood; and a sealing portion for sealingly securing the hood over a body portion of the user; the respirator hood assembly is designed to be compactly received in a container and to be deployed into an operative state automatically, whereby a user is provided protection from toxic gases and particulate material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.