Patent ID: 8910318
Filing Date: 2014-12-16
Classification: A42B,A61F,G02B

Abstract:
1. An induced draft anti-fog device for optical lenses to prevent said lens from fogging up and accumulating condensation comprising: a) a goggle housing having optical lens mounted in a front wall of said housing, and an opening in said housing opposite said front wall adapted to be worn on a face of a user; b) a first opening in one side of said housing for introducing air flow across an interior portion of said optical lens; c) a second opening in an opposite side of said housing for removing said air flow from said interior portion of said optical lens; d) a strap for holding said goggles to a user face extending between said first and second openings for circulating said air flow through said strap and said goggle housing; e) comprising a battery operated exhaust fan mounted on a rear portion of said strap for circulating incoming ambient air through said housing and exhausting said ambient air after circulating through said housing; f) an air intake port on said strap located between said exhaust fan and said first opening; and g) a barrier member within said strap disposed between said air intake port and said exhaust fan to block any mixing of exhaust air and fresh air.