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Grinder for windshield wipersRelated Patent Categories: Abrading, Tool Support For Flexible-member Tool, Manually Manipulated, By HandleGrinder for windshield wipers description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070173186, Grinder for windshield wipers. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF INVENTION [0001] 1. Field of Invention [0002] The present invention relates to windshield wipers and, more particularly, to a grinder for windshield wipers. [0003] 2. Related Prior Art [0004] Windshield wipers are important equipment for vehicles. The quality of windshield wipers determines whether rain can completely be wiped from the windshields of the vehicles. Whether rain can completely be wiped from the windshields determines whether drivers can have clear view through the windshields. Clear view is very important for the safety of the drivers' safety and/or pedestrians who are nearby. [0005] A typical windshield wiper includes a rubber strip for wiping rain from a windshield and a frame for carrying the rubber strip. When newly installed, windshield wipers generally can wipe rain from windshields completely. However, after used for some time, the rubber strips of the windshield wipers will inevitably be hardened and fail to wipe rain from the windshields completely. In early days, users have no choice but to replace used windshield wipers with new ones. Later, users can only replace used rubber strips with new ones. Now, users can grind hardened tips of used rubber strips of windshield wipers so that the used rubber strips of the windshield wipers can become like new. [0006] Disclosed in Taiwanese Patent M267123 is a grinder for windshield wipers. The grinder includes two plates 11 each formed with a first bent portion 213 and a second bent portion 223. A piece of sandpaper 40 is attached to the first bent portion 213 of each of the plates 11. [0007] The plates 11 are connected to each other so that the first portions 213 form a V-shaped structure and that the second portions 223 form a V-shaped structure. A cotton fabric 50 is attached to the second bent portion 223 of each of the plates 11. The sandpaper 40 can grind a tip of a rubber strip of a windshield wiper. The cotton fabrics 50 can clean the tip of the rubber strip of the windshield wiper. This conventional grinder has proven to be ineffective in removing a harden tip of a rubber strip of a windshield wiper. [0008] The present invention is intended to obviate or at least alleviate the problems encountered in prior art. SUMMARY OF INVENTION [0009] According to the present invention, a grinder includes a first side, a second side, a first piece of sandpaper attached to the first side and a second piece of sandpaper attached to the second side. The second piece of sandpaper is finer than the first piece of sandpaper. The first piece of sandpaper is used to grind and turn a tip of a rubber strip of a windshield wiper from broken to flat quickly. The second piece of sandpaper is used to make the tip of the rubber strip of the windshield wiper smooth. A first mark is provided on the first side for indicating a first step of a grinding process. A second mark is provided on the second side for indicating a second step of the grinding process. [0010] The primary advantage of the grinder of the present invention is that the first piece of sandpaper can grind and turn a tip of a rubber strip of a windshield wiper from broken to flat and the second piece of sandpaper can make the same smooth. [0011] Other advantages and features of the present invention will become apparent from the following description referring to the drawings. BRIEF DESCRIPTION OF DRAWINGS [0012] The present invention will be described through detailed illustration of the preferred embodiment referring to the drawings. [0013] FIG. 1 is a perspective view of a grinder for windshield wipers according to the preferred embodiment of the present invention. [0014] FIG. 2 is another perspective view of the grinder shown in FIG. 1. [0015] FIG. 3 is a cross-sectional view of the grinder shown in FIG. 1. [0016] FIG. 4 is a perspective view of a windshield wiper ground by means of the grinder shown in FIG. 1. [0017] FIG. 5 is an enlarged partial side view of the windshield wiper shown in FIG. 4. [0018] FIG. 6 is a side view of the windshield wiper shown in FIG. 4 ground by means of a first piece of sandpaper of the grinder shown in FIG. 1. [0019] FIG. 7 is a side view of the windshield wiper shown in FIG. 4 ground by means of a second piece of sandpaper of the grinder shown in FIG. 2. DETAILED DESCRIPTION OF PREFERRED EMBODIMENT [0020] Shown in FIGS. 1 through 3 is a grinder for windshield wipers according to the preferred embodiment of the present invention. The grinder includes a top 10, a bottom 20, a first flank 15, a second flank 25 and two taper ends. Continue reading about Grinder for windshield wipers... Full patent description for Grinder for windshield wipers Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Grinder for windshield wipers 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 Grinder for windshield wipers or other areas of interest. ### Previous Patent Application: Wafer holder for semiconductor manufacturing device and semiconductor manufacturing device equipped with the same Next Patent Application: Chemical mechanical polishing pad with micro-holes Industry Class: Abrading ### FreshPatents.com Support Thank you for viewing the Grinder for windshield wipers patent info. 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