The present invention is directed to the field of windshield wipers. There are several problems with existing windshield wipers. The first relates to visibility. Since the blades and arms of windshield wipers are generally black or another dark color, the existing windshield wipers generally act to obstruct the driver's vision to some extent. In addition, during long periods of driving with the windshield wipers operating, the constant motion of the windshield wipers can have a hypnotic effect on the driver causing the driver to become drowsy. Both of these problems create potential safety issues. The object of the present invention is to provide a windshield wiper that solves these safety problems.
The present invention is directed to a windshield wiper blade and arm that solves the aforementioned safety defects in available windshield wipers. The present invention is directed to a windshield wiper blade and arm assembly fabricated from transparent plastic type material. By fabricating the assembly from such material, the obstruction of the driver's vision during operation is reduced significantly. In addition, the hypnotic effect of the windshield wiper is also reduced. The present invention further comprises a photochromic dye so that any glare from the clear plastic material of the windshield wiper during a sunny day is reduced.
The present invention will now be described in the context of the presently preferred embodiment of the invention as shown in the drawing. Those of ordinary skill in the art will recognize that the present invention is not limited to the embodiment described herein.
In use, the present invention will greatly reduce, if not eliminate, the vision obstruction that occurs with a conventional black windshield wiper assembly. The transparency of the present invention will also greatly reduce the hypnotic effect from prolonged windshield wiper use since during use, the assembly will be virtually invisible.
One potential issue with a transparent, plastic windshield wiper blade and assembly is related to glare on a sunny day. Such reflections can distract the driver of the vehicle as well as cause vision problems. In order to ameliorate this issue, the present invention contemplates the use of a photochromic dye in the plastic material of the windshield wiper blade and arm. One such photochromic dye is PhotoSol® sold by PPG Optical Products. However, those of ordinary skill in the art will realize that other equivalent photochromic dyes may also be used without deviation from the spirit or scope of the present invention. Photochromic dyes are clear when not exposed to harsh sunlight. However, when such materials are exposed to sunlight, the materials turn dark black. Thus, by utilizing a photochromic dye distributed throughout the wiper arm and blade, the issue with glare on sunny days is resolved. However, the basic thrust of the invention is still maintained since on cloudy, rainy days, the wiper blade and arm will remain transparent. It is currently contemplated that the use of 1 to 20 grams of photochromic dye per kilogram of clear plastic will provide the desired effect.
Those of ordinary skill in the art will recognize that the embodiment just described merely illustrates the principals of the present invention. Many modifications may be made thereto without departing from the spirit and scope of the present invention as set forth in the following claims.
This application is a continuation-in-part of co-pending application Ser. No. 10/616,245 dated Jul. 9, 2003.
Number | Date | Country | |
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Parent | 10616245 | Jul 2003 | US |
Child | 11130879 | May 2005 | US |