Title:
POWERED EXHAUST APPARATUS FOR A PERSONAL PROTECTION RESPIRATORY DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/081788
Kind Code:
A3
Abstract:
The present invention relates to an exhaust apparatus for releasable or permanent connection to a personal protection respiratory device that defines a filtered air volume adjacent to the face of a wearer and comprises at least one exhalation valve. The exhaust apparatus comprising a powered blower in fluid connection with the at least one exhalation valve, the blower being operable to draw a portion of the wearer's exhaled breath through the at least one exhalation valve. Using such an exhaust apparatus for releasable connection to a personal protection respiratory device improves the comfort and overall experience for respirator wearers who use the respirator for intensive work, and/or for long periods of time, and/or in hot and humid environmental conditions by removing the heat and moisture build-up inside the respirator.
Inventors:
CURRAN DESMOND T (GB)
Application Number:
PCT/US2013/070940
Publication Date:
August 28, 2014
Filing Date:
November 20, 2013
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES CO (US)
International Classes:
A62B18/10; A62B18/00
Domestic Patent References:
| WO2014035641A2 | 2014-03-06 |
Foreign References:
| US4646732A | 1987-03-03 | |||
| GB2234440A | 1991-02-06 |
Attorney, Agent or Firm:
DEUTSCH, Craig A. et al. (Post Office Box 33427Saint Paul, Minnesota, US)
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