Patent Publication Number: US-11376625-B2

Title: Rosin spreader

Description:
TECHNICAL FIELD &amp; BACKGROUND 
     The present invention relates to a rosin spreader especially adapted for the bow hair of stringed instruments such as violin, viola and cello. Excessive rosin powder on the bow hair can reduce the performance of the bow. Toothbrushes have been used to wipe off rosin dust on the bow hair. However, such toothbrushes can wipe off only minor clumps of rosin powder and are not effective to evenly distribute rosin particles on the bow hair. Such toothbrushes can even damage the bow hair. In fact, no particular rosin spreaders designed exclusively for the bow hair of stringed instruments have been available. 
     Therefore, it would be desirable to provide a rosin spreader that not only easily wipes off excessive rosin, but also evenly distributes rosin particles on the bow hair. 
     SUMMARY OF THE INVENTION 
     The present invention is directed to a rosin spreader that overcomes the above-mentioned disadvantages of the prior art. 
     In one aspect, the present invention provides a rosin spreader having a body, a plurality of substantially parallel, spaced apart, elongated first teeth, a plurality of substantially parallel, spaced apart, elongated second teeth, a plurality of bristles, an elongated first sidewall, and an elongated second sidewall. The body has a top surface, a bottom surface, and a peripheral edge. The first teeth extend outwardly from the top surface of the body. The second teeth extend outwardly from the top surface of the body. The first teeth and the second teeth are secured to the top surface of the body. The first teeth and the second teeth are in spaced parallel relationship. The bristles extend outwardly from the top surface of the body. The bristles are positioned between the first teeth and the second teeth. The bristles are secured to the top surface of the body. The first sidewall extends upwardly from the top surface of the body. The second sidewall extends upwardly from the top surface of the body. The first sidewall and the second sidewall are secured to the top surface of the body. The first sidewall and the second sidewall are in spaced parallel relationship. The first teeth, the second teeth, and the bristles are positioned between the first sidewall and the second sidewall. 
     In another aspect, the present invention provides a rosin spreader having a body, a plurality of substantially parallel, spaced apart, elongated first teeth, a plurality of bristles, and an elongated first sidewall. The body has a top surface, a bottom surface, and a peripheral edge. The first teeth extend outwardly from the top surface of the body. The bristles extend outwardly from the top surface of the body. The first sidewall extends upwardly from the top surface of the body. The first teeth, the bristles, and the first sidewall are secured to the top surface of the body. 
     In a further aspect, the present invention provides a rosin spreader having a body, a plurality of substantially parallel, spaced apart, elongated first teeth, a plurality of substantially parallel, spaced apart, elongated second teeth, a plurality of bristles, an elongated first sidewall, and an elongated second sidewall. The body has a top surface, a bottom surface, a front and a peripheral edge. The first teeth extend outwardly from the top surface of the body. The first teeth extend in directions substantially 90° from the top surface of the body. The second teeth extend outwardly from the top surface of the body. The second teeth have an identical material, thickness and/or extent in the longitudinal direction of the first teeth. The first teeth and the second teeth are secured to the top surface of the body. The first teeth and the second teeth are in spaced parallel relationship. The bristles extend outwardly from the top surface of the body. The bristles are positioned between the first teeth and the second teeth. The bristles are secured to the top surface of the body. The first sidewall extends upwardly from the top surface of the body. The first sidewall is adjacent to the front of the body. The second sidewall extends upwardly from the top surface of the body. The first sidewall and the second sidewall are secured to the top surface of the body. The first sidewall and the second sidewall are in spaced parallel relationship. The first teeth, the second teeth, and the bristles are positioned between the first sidewall and the second sidewall. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention will be described by way of exemplary embodiments, but not limitations, illustrated in the accompanying drawing in which like references denote similar elements, and in which: 
         FIG. 1  illustrates a perspective view of a rosin spreader, in accordance with one embodiment of the present invention. 
         FIG. 2  illustrates a top view of a rosin spreader, in accordance with one embodiment of the present invention. 
         FIG. 3  illustrates a bottom view of a rosin spreader, in accordance with one embodiment of the present invention. 
         FIG. 4  illustrates a side view of a rosin spreader, in accordance with one embodiment of the present invention. 
         FIG. 5  illustrates a front view of a rosin spreader, in accordance with one embodiment of the present invention. 
         FIG. 6  illustrates a back view of a rosin spreader, in accordance with one embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS 
     Various aspects of the illustrative embodiments will be described using terms commonly employed by those skilled in the art to convey the substance of their work to others skilled in the art. However, it will be apparent to those skilled in the art that the present invention may be practiced with only some of the described aspects. For purposes of explanation, specific numbers, materials and configurations are set forth in order to provide a thorough understanding of the illustrative embodiments. However, it will be apparent to one skilled in the art that the present invention may be practiced without the specific details. In other instances, well-known features are omitted or simplified in order not to obscure the illustrative embodiments. Various operations will be described as multiple discrete operations, in turn, in a manner that is most helpful in understanding the present invention. However, the order of description should not be construed as to imply that these operations are necessarily order dependent. In particular, these operations need not be performed in the order of presentation. The phrase “in one embodiment” is used repeatedly. The phrase generally does not refer to the same embodiment, however, it may. The terms “comprising”, “having” and “including” are synonymous, unless the context dictates otherwise. 
     This present invention provides a rosin spreader that could dramatically improve the performance of the bow, not only by wiping off such excessive rosin on the bow hair, but also by evenly distributing rosin particles on the hair. 
       FIG. 1  illustrates a perspective view of a rosin spreader  100 , in accordance with one embodiment of the present invention. 
     Referring to  FIG. 1 , a rosin spreader  100  includes a body  110 , a plurality of substantially parallel, spaced apart, elongated first teeth  120 , a plurality of substantially parallel, spaced apart, elongated second teeth  130 , a plurality of bristles  140 , an elongated first sidewall  150 , and an elongated second sidewall  160 . 
       FIG. 2  illustrates a top view of a rosin spreader  100 , in accordance with one embodiment of the present invention.  FIG. 3  illustrates a bottom view of a rosin spreader  100 , in accordance with one embodiment of the present invention. 
     In an exemplary embodiment, and as illustrated in  FIGS. 1, 2, and 3 , the body  110  has a top surface  111 , a bottom surface  112 , a front  113  and a peripheral edge  114 . The body  110  may be comprised of a metal, plastic, or other suitable flexible, semi-rigid material. Preferably, the body  110  may comprise one or more materials selected from the group consisting of: wood, metal, plastic, and rubber. The body  110  may further comprise material suitable for graphic decoration. The body  110  may provide a convenient surface to graphically decorate such as drawings or text. A logo may be inscribed on the bottom surface  112  of the body  110 . The body  110  may further comprise at least one of a waterproof material and a water resistant material. 
       FIG. 4  illustrates a side view of a rosin spreader  100 , in accordance with one embodiment of the present invention. 
     Referring to  FIGS. 1, 2, and 4 , the first teeth  120  extend outwardly from the top surface  111  of the body  110 . The first teeth  120  extend in directions substantially 90° from the top surface  111  of the body  110 . The second teeth  130  extend outwardly from the top surface  111  of the body  110 . The second teeth  130  have an identical material, thickness and/or extent in the longitudinal direction of the first teeth  120 . The first teeth  120  and the second teeth  130  are secured to the top surface  111  of the body  110 . The first teeth  120  and the second teeth  130  are in spaced parallel relationship. 
     Preferably, the first teeth  120  and the second teeth  130  may comprise one or more materials selected from the group consisting of: wood, metal, and plastic. The first teeth  120  and the second teeth  130  may be further comprised of a metal, plastic, or other suitable flexible, semi-rigid material. The first teeth  120  and the second teeth  130  can be attached to the top surface  111  of the body  110  in a variety of ways, including heat welding and adhesives. However, the first teeth  120  and the second teeth  130  are preferably affixed to the top surface  111  via a heat welding that securely holds the first teeth  120  and the second teeth  130  in position. Thus, the first teeth  120  and the second teeth  130  remain securely attached to the top surface  111  of the body  110  when the first teeth  120  and the second teeth  130  are in use. 
     Referring to  FIGS. 1 and 2 , the bristles  140  extend outwardly from the top surface  111  of the body  110 . The bristles  140  are positioned between the first teeth  120  and the second teeth  130 . The bristles  140  are secured to the top surface  111  of the body  110 . Preferably, the bristles  140  may comprise one or more materials selected from the group consisting of: microfiber, synthetic fiber, polypropylene, polyethylene, rayon, polyester, and polyurethane. The bristles  140  may be secured by heat welding or adhesives to the top surface  111  of the body  110 . 
       FIG. 5  illustrates a front view of a rosin spreader  100 , in accordance with one embodiment of the present invention.  FIG. 6  illustrates a back view of a rosin spreader  100 , in accordance with one embodiment of the present invention. 
     In an exemplary embodiment, and as illustrated in  FIGS. 1, 5 and 6 , the first sidewall  150  extends upwardly from the top surface  111  of the body  110 . The first sidewall  150  is adjacent to the front  113  of the body  110 . The second sidewall  160  extends upwardly from the top surface  111  of the body  110 . The first sidewall  150  and the second sidewall  160  are secured to the top surface  111  of the body  110 . The first sidewall  150  and the second sidewall  160  are in spaced parallel relationship. 
     Preferably, the first sidewall  150  and the second sidewall  160  may comprise one or more materials selected from the group consisting of: wood, metal, plastic, and rubber. The first sidewall  150  and the second sidewall  160  may be formed from a semi-rigid or flexible material. The first sidewall  150  and the second sidewall  160  may be secured by heat welding or adhesives to the top surface  111  of the body  110 . 
     Referring to  FIG. 1 , the first teeth  120 , the second teeth  130 , and the bristles  140  are positioned between the first sidewall  150  and the second sidewall  160 . 
     Thus, the present invention disclosed herein provides an improved rosin spreader that not only wipes off excessive rosin, but also evenly distributes rosin particles on the bow hair by implementing such teeth and bristles. While the present invention has been related in terms of the foregoing embodiments, those skilled in the art will recognize that the invention is not limited to the embodiments described. The present invention can be practiced with modification and alteration within the spirit and scope of the appended claims. Thus, the description is to be regarded as illustrative instead of restrictive on the present invention.