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Air ventilator for helmetRelated Patent Categories: Apparel, Guard Or Protector, For Wearer's HeadAir ventilator for helmet description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070192942, Air ventilator for helmet. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a motorcycle helmet, and more specifically to an air ventilator for a helmet that can enhance the assemblability and stability by improving the assembly structure of the air duct assembled to the top of the helmet and furthermore can aim at the certification of motorcycle safety specification (i.e. SNELL) and the stability of quality. [0003] 2. Description of the Related Art [0004] In general, during the driving of a motorcycle, a helmet for protecting the head of the wearer must be worn to protect the head of the wearer, and a shield is installed in the front of the helmet so that the wearer can have his field of vision not obstructed and can solve breathing difficulty. [0005] And when the operator wears the helmet, the air in the helmet is not ventilated, so the temperature inside of the helmet rises as time passes. As the temperature inside of the helmet rises like this, the wearer feels headache or dizziness, so he has difficulty and inconvenience in that he has to ventilate the air of the helmet by taking off the helmet and putting it on again for a moment while he is wearing the helmet. [0006] FIG. 5 is a lateral view showing a conventional air ventilator for a helmet in disassembly, and FIG. 6 is a plan view showing the conventional air ventilator for the helmet. [0007] As shown in these drawings, in the structure of the conventional air ventilator, a plurality of ventilation holes 1a are formed on the surface of the helmet 1 for air inletting and outletting, and an air duct 2 is installed around the ventilation holes 1a for getting the venturi effect. The air duct 2 takes in outside air into the inside of the helmet 1 through the ventilation holes 1a so that the operator can discharge the air inside of the helmet 1 without taking off the helmet 1. Normally, the air duct 2 is fixed on the surface of the helmet 1 by a screw 3. [0008] In the structure in which the conventional air duct 2 is assembled to the helmet 1, a screw is used to fix the air duct 2 to the surface of the helmet 1, but it is not in conformity to the motorcycle safety specification test, so it cannot be applied. Also, the air duct may be attached by using double-sided tape, but it is difficult to apply it due to difficulty of quality assurance. SUMMARY OF THE INVENTION [0009] Therefore, it is an object of the present invention to provide an air ventilator for a helmet which is configured such that the air duct is fitted to the helmet detachably so as to improve assemblability and stability, conforms to the motorcycle safety specification, and assures the quality. [0010] In accordance with another aspect of the present invention, there is provided an air ventilator for a helmet comprising: an air duct which is assembled on the top surface of the helmet so as to cover around a plurality of air ventilation holes la communicating the inside and outside of the helmet; a guide rail in which both sides are bent upward widthwise and bent again in the direction of the edge of the width at a predetermined distance so as to form predetermined projection portions and also first flanges with a predetermined width are formed on the edges and fixed on the surface of the helmet in close contact; and a slider in which both sides are bent upward widthwise and bent again in the direction of the center of the width at a predetermined distance so as to form predetermined projection portions and also second flanges with a predetermined width are formed on the edges, and are slidably assembled on the guide rail in close contact with the bottom of the air duct. [0011] Preferably, the first flanges of the guide rail have a narrowed width toward one end in a longitudinal direction. [0012] Preferably, the guide rail is attached to the surface of the helmet by double-sided tape, and a screw hole is formed in the center of the guide rail, so that the guide rail is screwed to the helmet by a screw inserted into a screw hole. [0013] Preferably, a through hole is formed in the center of the slider, and a fixed protuberance having a predetermined length which is inserted into a through hole is formed on the bottom of the air duct, and a push waster is inserted onto the end of the fixed protuberance that is protruded through the through hole. BRIEF DESCRIPTION OF THE INVENTION [0014] Other objects and aspects of the present invention will become apparent from the following description of embodiments with reference to the accompanying drawings in which: [0015] FIG. 1 is an exploded perspective view of the main parts illustrating an air ventilator for a helmet according the present invention; [0016] FIG. 2 is a perspective view illustrating the structure of a guide rail according to the present invention; [0017] FIG. 3 a perspective view illustrating the structure of a slider according to the present invention; [0018] FIG. 4 is a sectional view taken along the line A-A of FIG. 3; [0019] FIG. 5 is an exploded lateral view illustrating a conventional air ventilator for a helmet; [0020] FIG. 6 is a plan view illustrating the conventional air ventilator for the helmet. DESCRIPTION OF THE PREFERRED EMBODIMENT Continue reading about Air ventilator for helmet... Full patent description for Air ventilator for helmet Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Air ventilator for helmet patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Air ventilator for helmet or other areas of interest. ### Previous Patent Application: Men's underwear with an adjustable support sling Next Patent Application: Hinged pad for protective gear Industry Class: Apparel ### FreshPatents.com Support Thank you for viewing the Air ventilator for helmet patent info. 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