Bicycle helmet having air filtering and breathing means

Claim 1

A protective helmet comprising: (a) an outer shell configured to fit and be secured around the upper portion of a user's head, said shell having frontal and rear openings therein for forced outside air ventilation through said helmet; (b) filtration means secured to the front of said shell in said frontal opening for filtering said outside air forced through said frontal opening; (c) supply means coupled to said filtration means for supplying said filtered air to the mouth of said user, said supply means including an elongated tube having a mouthpiece positioned near the distal end thereof; (d) an inlet one-way flow valve provided within said elongated tube and positioned upstream of said mouthpiece intermediate said filtration means and mouthpiece; and, (e) an exit one-way flow valve coupled to said elongated tube and positioned downstream of said mouthpiece; (f) whereby when said user inhales outside air which passes through said frontal opening, said filtration means, said supply means, said inlet one-way flow valve, and said mouthpiece, said exit one-way flow valve is closed; and, whereby when said user exhales air which passes through said mouthpiece and out of said exit one-way flow valve, said inlet one-way flow valve is closed.