Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With moisture prevention or absorption
Reexamination Certificate
2000-04-04
2001-08-21
Mai, Huy (Department: 2873)
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With moisture prevention or absorption
C351S041000, C002S431000, C002S437000
Reexamination Certificate
active
06276795
ABSTRACT:
FIELD OF THE INVENTION
This invention relates generally to eyewear. More particularly, this invention relates both to plano (that is non corrective or zero power) and prescription eyewear for use in safety and recreational applications (i.e., sports and/or hostile environments) with adjustable strap temples which optionally permit the secure attachment of other safety equipment such as ear muffs or head phones.
BACKGROUND OF THE INVENTION
Protective eyewear, both prescription and piano (that is non corrective or zero power) is available in the market place for both safety and recreational (i.e., sports) applications. Such eyewear is exemplified in U.S. patent application Ser. No. 08/641,901 filed May 2, 1996, which is assigned to the assignee hereof, all of the contents of which are incorporated herein by reference. This eyewear comprises a pair of spectacles which includes a lens attached to a pair of temples. The lens has a surface which is created by rotating an aspheric shape about an axis which is offset from an axis of the aspheric shape. Preferably, the aspheric shape is an ellipse and more preferably the resultant lens will have a cross-section in the horizontal meridian which is a segment of an ellipse and a cross-section in the vertical meridian which is a segment of a circle. This lens exhibits a high degree of wrap and so provides extensive protection without the need for side shields.
Of course, many other prior art protective eyewear is known, all of the eyewear generally utilizing a pair of rigid or semi-rigid temples which extend outwardly from the lenses or a lens frame. Examples of other protective spectacles of this type include U.S. Pat. Nos. 4,867,550; 4,741,611; 4,674,851; 4,859,048; 5,381,192 and 5,032,017, all of the contents of these patents being incorporated herein by reference.
One perceived problem not addressed by the prior art is that the prior art protective spectacles do not sufficiently protect the eyes from particulates that exist in dusty, dirty work environments. In addition, certain liquids present in various environments pose a risk in that liquids may splash in the face of the user and more specifically in the eyes of the user. Both of these problems are also present for some sport environments. Currently, it is known that most common eye injuries in the industrial workplace are a result of these aforementioned particulates or liquids entering the area immediately adjacent to the eye. Therefore, there is a perceived need to develop eyewear that will keep particulate matter and liquids away from the eye. Additionally, in hostile environments, there is often a need to wear safety eyewear in conjunction with other safety equipment such as noise suppression ear muffs or communication head phones without disrupting the particulate and liquid seal of the eyewear or the seal of the other safety device or devices. Therefore, there is an additionally perceived need for a method of attachment of the eyewear to other safety gear without affecting the seals of the individual safety items as is presently unavoidable with prior art temples associated with prior art safety and protective spectacles.
SUMMARY OF THE INVENTION
The above discussed and other drawbacks and deficiencies are overcome or alleviated by the eyewear of the present invention. An eyewear having a frame, a lens detachably attached to the frame and a strap assembly is disclosed. The frame and lens form at least one opening to allow ventilation. A resilient flange is provided along the periphery of the frame. In one embodiment, a plurality of L-shaped channels are provided to provide indirect ventilation. An end piece having a cylindrical extension detachably attaches the strap lens and frame. A head disposed on the cylindrical extension rotates to contact the frame and urge the outer periphery of the lens against a protrusion on the frame to retain the lens on the frame.
The frame has a skirt which is preferably integrally formed therewith and extends around a periphery of the frame. The skirt includes a beveled surface which extends outwardly away from the first side of the frame and a flange element extending around the beveled surface about the periphery of the frame. The skirt is preferably integrally formed with the remaining portions of the frame and is intended to prevent unwanted foreign matter from entering underneath the device and contacting the eyes of a user. The skirt is contoured to seat substantially flush against the face of the user so that particulate, liquids and other undesirable matter are prevented from freely entering underneath the frame and contacting the eyes of the user.
The above-discussed and other features and advantages of the present invention will be appreciated and understood by those skilled in the art from the following detailed description and drawings.
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Desy Raoul
Hall James
Salce John E.
Aearo Company
Cantor & Colburn LLP
Mai Huy
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