Portable air filtering and breathing assist device masks

Details Portable air filtering and breathing assist device masks Portable air filtering and breathing assist device masks

A - Human Necessities

62

B

183/107, 2/45

A62B 18/02 (2006.01) A62B 18/00 (2006.01) A62B 23/02 (2006.01)

Patent

CA 1119975

ABSTRACT A battery operated filter blower unit is arranged to be supported on the person and has connection by a flexible conduit to face masks worn by the person, thus allowing a person wearing the filtering device to move about freely. The filter blower unit has universal use with substantially all face masks. For example, it can be used with a safety mask arranged to be removably suppor- ted on a head band having a front opening which is substantially perpendicular to the safety mask whereby ejected air diffuses in all directions against the mask to prevent polluted air from being drawn in around the mask. The mask preferably in turned rearwardly at the sides as well as at the top and bottom to provide a good diffusion of air. The filter blower unit has universal use in that it can be connected to respirator face masks of conventional use or to oxygen type face masks also of conventional use. The filter arrangement in the blower unit is such that conventional respirator face mask filters and holders can be used.

304054

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