Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With moisture prevention or absorption
Reexamination Certificate
2001-06-02
2002-09-17
Dang, Hung Xuan (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With moisture prevention or absorption
C351S041000, C002S435000
Reexamination Certificate
active
06450639
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to eyewear designs that allow for circulation of air between the eyes and lenses. Such is for the purpose of preventing fog from appearing on the lenses—a consistent problem in a host of sporting activities and work areas that require glasses or goggles for safety purposes. Such is uncomfortable and often dangerous for the user.
A first embodiment of the present invention teaches the use of beveled members affixed to the interior portion of the frames of the glasses or goggles, such that the spaced apart members come in direct contact with the user's forehead. This design allows for continuous air flow between the beveled members to the user's eyes, while still protecting the eyes from direct impact from objects.
Furthermore, spacers may be placed on the inside of the frames, attached to the frames by simple adhesives. The distance between the spacers may be of a range of one-quarter to three-eighths inches, and the spacers may be of a similar width as the outside frame. Importantly, the edges may be rounded or beveled for the purposes of user comfort.
Finally, regarding goggles that completely enclose the eye area, an additional embodiment of the present invention teaches the usage of eyewear frames bearing air holes through the circumference of each eye portion. The size of such apertures may range from one-sixteenth to three-eighths inches in diameter, and are included to accomplish the purpose of allowing sufficient airflow through the eye area to prevent fog from forming upon the goggles.
In total, the designs of the present invention mitigate or prevent undesired fog from forming upon protective or non-protective eyewear in an effective manner that does not add to the manufacturing cost of the products. Importantly, the protection provided by the eyewear and the appearance of the products are not in any way compromised by the present invention.
2. Description of the Prior Art
Numerous innovations for fog-reducing eyewear devices have been provided in the prior art that are described as follows. Even though these innovations may be suitable for the specific individual purposes to which they address, they differ from the present invention as hereinafter contrasted. The following is a summary of those prior art patents most relevant to the invention at hand, as well a description outlining the differences between the features of the present invention and those of the prior art.
1. U.S. Pat. No. 5,610,668, invented by Mage, entitled “Fog-Resistant Sunglasses Incorporating Ventilation Channels”
The patent to Mage describes protective eyeglasses (e.g., sunglasses) for use in high-speed outdoor sports activities, the lenses thereof being resistant to condensation, achieved by air circulation created by venturi effects. The glasses comprise a frame front having middle portions over the wearer's eyes which support protective lenses, and having endpiece portions near the wearer's temples, the outboard edges of which attach temples which hold the glasses in place. A chamber is defined by the volume between the lenses and the wearer's face, and gaps are defined by the distance between the middle portions of the frame front and the wearer's face. Apertures in each of the endpiece portions of the frame front define an entrance of a ventilation channel for air flow through the frame front, adjacent to the respective chamber. Venturi forces are created within the ventilation channels to facilitate circulation of air. Improved ventilation, and the reduction or elimination of fogging on the lenses, is accomplished by low-cost and lightweight glasses.
2. U.S. Pat. No. 5,898,468, invented by Mage, entitled “Fog-Resistant Sunglasses Incorporating Ventilation Channels Fog-Resistant Sunglasses Incorporating Ventilation Channels”
This patent to Mage describes protective eyeglasses resistant to fogging while being worn by a wearer. The eyeglasses comprise a frame front which spans across the wearer's face and includes a forward side, an aft side, at least one middle portion extending over the wearer's eyes, and a pair of end piece portions near the wearer's temples. Attached to the middle portion of the frame front is at least one lens which is positioned over the wearer's eyes and defines front and back surfaces. Additionally, disposed within the frame front is at least one forwardly directed aperture which defines a ventilation channel for facilitating airflow through the frame front adjacent the lens. The ventilation channel defined by the aperture is sized and configured to facilitate the circulation of air over the back surface of the lens to resist the fogging thereof.
3. U.S. Pat. No. 4,011,595, invented by Shields, entitled “Defoggable Goggles”
The patent to Shields describes goggles having a wide lens mounted in a semi-rigid frame which positions the lens away from the face providing an enclosed air space, the frame having a number of apertures permitting an influx of air, and one or more outlet apertures to which are secured means for evacuating air from the inner space. The evacuating means takes the form of a conduit which can be placed in the wearer's mouth to draw air out of the inner space.
4. U.S. Pat. No. 5,018,223, invented by Dawson et al., entitled “Non-Fogging Goggles”
The patent to Dawson et al. describes non-fogging goggles which include a double lens that consists of a pair of two spaced-apart lenses that have an air interstice therebetween and in which the inner surface of the outer lens is coated with a metal film. The metal coating is preferably made of gold and is vacuum-deposited on the outer lens. The body heat radiated by the user is reflected on the metal film and reduces the temperature differential between the inner lens and the area enclosed by the goggles, thereby preventing fogging of the inner lens. The radiated heat will also contribute in maintaining the temperature of the lens of any corrective eyeglasses worn under the goggles.
5. U.S. Pat. No. 4,150,443, invented by McNeilly, entitled “Anti-Fogging Sports Goggle”
The patent to McNeilly describes a sports goggle provided with power means in the form of a miniature electrical fan mounted within the air space defined by the goggle and the face of the wearer when the goggle is in place. The fan is selectively actuatable by the wearer of the goggle to draw the warm humid air within the air space into the fan, to compress the same therein, and to circulate the same throughout the air space to prevent condensation build-up on the inner surface of the lens structure of the goggle and on eyeglasses of the wearer of the goggle. The fan also urges the circulated warm humid air outwardly of the goggle through air passages provided in the shell of the goggle so that ambient air may enter the goggle to replace the forced out air without admitting snow or other precipitation from the ambient.
6. U.S. Pat. No. 6,065,833, invented by Tiano, entitled “Sporting Eyeglasses”
The patent to Tiano describes sportsman's eye wear designed to overcome the difficulties and problems associated with conventional eye wear designs. The sporting eyeglasses are specially designed to afford the serious hunter, fisherman or outdoorsman superior eye protection in a stylish manner while providing a effective means by which to secure them to the user's head and maintain their position. The eyeglasses also include anti-fogging ventilation, a camouflaging veil and allow for the incorporation of prescription lenses.
7. U.S. Pat. No. 5,459,533, invented by McCooeye et al., entitled “Defogging Eye Wear”
The patent to McCooeye et al. describes an eye wear device comprising a frame and lens means supported by the frame to be positioned in front of a wearer's eyes. The improvement characterized in that the lens means is coated with an electrically conductive heat generating layer to be positioned in the wearer's field of vision when the eye wear is worn, and of sufficient resistance to produc
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