Protective helmet with selectively covered aperture

Details Protective helmet with selectively covered aperture Protective helmet with selectively covered aperture

2005-08-09

2005-08-09

Lindsey, Rodney M. (Department: 3765)

Apparel

Head coverings

With forced air circulator

C128S201240, C128S201250

Reexamination Certificate

active

06925655

ABSTRACT:
Protective helmet comprising a two piece shell, an electric motor and impeller useful for creating a positive pressure environment in the head space, and a filter for removing particulates and other substances. The impeller introduces atmospheric air into an air channel defined by two detachably attached shell pieces. The air is pushed through a particulate filter in the air channel and then through at least one aperture into the head space. A heating element may be used to heat the air flow.

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