Goggle for protecting eyes with a movable lens and methods for using the goggle

Abstract

A goggle comprising a lens, frame, lens-retention mechanism and adjustment mechanism. The lens can be selectively moved relative to the frame to at least two different positions defining substantially different levels of air flow between the lens and frame while maintaining the lens in front of a user's eyes, and retained at each position. One position is defined by substantially all the lens periphery contacting the frame to substantially form a seal. Other positions are defined by substantially all the lens periphery not contacting the frame wherein ambient air flows uninhibited across the inside surface of the lens. The lens-retention mechanism comprises a post and detent, while the adjustment mechanism comprises various mechanisms, for example a rack and pinion, a lever or a rack and pawl that biases the lens to one of the other positions. The adjustment and lens-retention mechanisms may be the same mechanism.

Dependencies are inferred from the claim text.