Goggle

Abstract

A unique goggle is disclosed with improved ventilation means. The goggle includes a frame having a transparent lens across its forward side and the frame is secured to the head of the user by a strap or the like. In doing so, a goggle chamber is formed between the frame, lens and the head of the user. At least one ventilation port is formed through the frame which is open to the chamber while an elongated ventilation channel is secured to and extends rearwardly from the frame. One end of the channel is open to the goggle chamber while the other end of the channel is open rearwardly of the goggle frame.In use, air is evacuated from the goggle chamber and out through the ventilation channel by venturi forces.

I claim: 
     
       1. A goggle comprising: a frame having a front side and a rear side,   a transparent lens secured across the first side of said frame,   means for detachably securing said frame to a head of a user so that said rear side of said frame abuts against the head of the user and thus forming a chamber between said frame, lens and the head of the user,   at least one ventilation port formed through said frame and open to said chamber,   at least one elongated ventilation channel, said channel open at each end and only each such end and defining a fluid passageway between its ends, said channel secured to and extending rearwardly from said frame,   wherein one end of said channel is open to said chamber and,   wherein the other end of said channel faces rearwardly from the rear side of said frame and is open at a position spaced rearwardly from the rear side of said frame.   
     
     
       2. The invention as defined in claim 1 wherein said chamber is laterally elongated and wherein said one end of said channel is open to one side of said chamber. 
     
     
       3. The invention as defined in claim 2 and comprising a second ventilation channel secured to and extending rearwardly from said frame, said second channel having one end open to the other side of said chamber. 
     
     
       4. The invention as defined in claim 2 wherein said channel comprises a first portion extending laterally outwardly from said one side of said channel and a second portion extending rearwardly from said first portion. 
     
     
       5. The invention as defined in claim 1 wherein the cross sectional area of said fluid passageway increases from said one end of said channel and toward the other end of said channel. .Iadd. 
     
     
       6.  A goggle comprising: a frame having a front side and a rear side,   a transparent lens secured to said frame,   means for detachably securing said frame to a head of a user so that said frame abuts against the head of the user and thus forms a unitary chamber between said frame, lens, and the head of the user,   at least one ventilation port formed through said frame and open to said chamber,   at least two ventilation channels secured to said frame, each of said channels being open at each end and only each such end and defining a fluid passageway between its ends, wherein one end of each of said channels is open to said chamber and the other end of each of said channels is spaced rearwardly from said respective one end and facing substantially in a rearward direction relative to the front side of said frame, such that the pressure at said other ends of said channels is lower than the pressure at said ventilation port upon relative air movement past said goggle. .Iaddend. .Iadd.7. The goggle as defined in claim 6 wherein the cross-sectional area of each of said channels increases over substantially its entire length from said one end to said other end. .Iaddend. .Iadd.8. A structure for clearing the inside surface of a transparent lens that is supported in a spaced relationship to the eyes of the user by apparatus adapted to be worn on the head of the user such that a unitary chamber is formed between the apparatus, the lens, and the head of the user comprising:   at least one ventilation port formed through said apparatus and open to said chamber; and   at least two ventilation channels, each of said channels being open at each end and only at each such end and defining a fluid passageway between its ends, wherein one end of each of said channels is open to said chamber and the other end of each of said channels is open to atmosphere external of said chamber and projects substantially in a rearward direction relative to the user, such that the pressure at said other ends of said channels is lower than the pressure at said ventilation port upon relative air   
     
     
        movement past said structure. .Iaddend. .Iadd.9.  The structure as defined in claim 8 wherein the cross-sectional area of each of said channels increases over substantially its entire length from said one end to said other end. .Iaddend. .Iadd.10. A structure adapted to be worn on the head of a user while the user is moving in a forward direction, the forward movement of the user creating an area of relative high pressure immediately in front of the head of the user and zones of relative low pressure toward both sides of the head of the user, said structure being further adapted to clear the inside surface of a transparent lens that is supported by apparatus in spaced relation to the eyes of the user, such that the area formed between the apparatus, the lens, and the head of the user defines a unitary chamber; said structure including: first means for communicating the relative high pressure air created by the movement of the user in a forward direction into said chamber; and   second means defining first and second fluid passageways open only at their respective ends for communicating said chamber with the zones of relative low pressure air toward both sides of the head of the user created by the movement of the user in a forward direction. .Iaddend. .Iadd.11. A structure for clearing the inside surface of a transparent lens that is supported by apparatus in spaced relation to the eyes of the user, such that the area formed between the apparatus, the lens, and the head of the user defines a unitary chamber; said structure including:   first means for communicating the relative high pressure air created by relative movement of air past said structure, into said chamber; and   second means defining first and second fluid passageways, each of said first and second fluid passageways being open at each end and only at each such end with one end open to said chamber and the other end open to atmosphere external of said chamber and facing substantially in a rearward direction, for creating a zone of relative low pressure across said other end upon relative movement of air past said structure, to thereby evacuate the air in said chamber through said first and second fluid passageways.   
     
     
        .Iaddend. .Iadd.12.  The goggle as defined in claim 6 wherein said frame defines a right side and a left side relative to the face of the user, and further wherein one of said ventilation channels is located on the right side of said frame and the other of said ventilation channels is located on the left side of said frame. .Iaddend. .Iadd.13. The structure as defined in claim 8 wherein said apparatus defines a right side and a left side relative to the face of the user, and further wherein one of said ventilation channels is located on the right side of said apparatus and the other of said ventilation channels is located on the left side of said apparatus. .Iaddend. .Iadd.14. The structure as defined in claim 11 wherein said apparatus defines a right side and a left side relative to the face of the user, and further wherein one of said ventilation channels is located on the right side of said apparatus and the other of said ventilation channels is located on the left side of said apparatus. .Iaddend.