Abstract:
A tire with worn tread indicator for providing a visual indication that a tire&#39;s tread is worn below a predetermined level. The tire with worn tread indicator includes a tire with a treaded outer surface having a plurality of alternating tread channels and tread ridges. A plurality of spaced apart elongate gel tubes are embedded in the tire and positioned adjacent the treaded outer surface. In the lumen of each gel tube is a visibly detectable colored liquid therein.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to tire with worn tread indicators and more particularly pertains to a new tire with worn tread indicator for providing a visual indication that a tire&#39;s tread is worn below a predetermined level. 
     2. Description of the Prior Art 
     The use of tire with worn tread indicators is known in the prior art. More specifically, tire with worn tread indicators heretofore devised and utilized are known to consist basically of familiar, expected and obvious structural configurations, notwithstanding the myriad of designs encompassed by the crowded prior art which have been developed for the fulfillment of countless objectives and requirements. 
     Known prior art includes U. S. Pat. No. 3,814,160 by Creasey; U.S. Pat. No. 4,226,274 by Awaya et al.; U.S. Pat. No. 3,362,376 by Norton; U.S. Pat. No. 4,074,742 by Chamblin; U.S. Pat. No. 3,929,179 by Hines; and U.S. Pat. No. 647,987 by Roney. 
     While these devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not disclose a new tire with worn tread indicator. The inventive device includes a tire with a treaded outer surface having a plurality of alternating tread channels and tread ridges. A plurality of spaced apart elongate gel tubes are embedded in the tire and positioned adjacent the treaded outer surface. In the lumen of each gel tube is a visibly detectable colored liquid therein. 
     In these respects, the tire with worn tread indicator according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in so doing provides an apparatus primarily developed for the purpose of providing a visual indication that a tire&#39;s tread is worn below a predetermined level. 
     SUMMARY OF THE INVENTION 
     In view of the foregoing disadvantages inherent in the known types of tire with worn tread indicators now present in the prior art, the present invention provides a new tire with worn tread indicator construction wherein the same can be utilized for providing a visual indication that a tire&#39;s tread is worn below a predetermined level. 
     The general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new tire with worn tread indicator apparatus and method which has many of the advantages of the tire with worn tread indicators mentioned heretofore and many novel features that result in a new tire with worn tread indicator which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art tire with worn tread indicators, either alone or in any combination thereof. 
     To attain this, the present invention generally comprises a tire with a treaded outer surface having a plurality of alternating tread channels and tread ridges. A plurality of spaced apart elongate gel tubes are embedded in the tire and positioned adjacent the treaded outer surface. In the lumen of each gel tube is a visibly detectable colored liquid therein. 
     There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are additional features of the invention that will be described hereinafter and which will form the subject matter of the claims appended hereto. 
     In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting. 
     As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention. 
     Further, the purpose of the foregoing abstract is to enable the U.S. Patent and Trademark Office and the public generally, and especially the scientists, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The abstract is neither intended to define the invention of the application, which is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way. 
     It is therefore an object of the present invention to provide a new tire with worn tread indicator apparatus and method which has many of the advantages of the tire with worn tread indicators mentioned heretofore and many novel features that result in a new tire with worn tread indicator which is not anticipated, rendered obvious, suggested, or even implied by any of the prior art tire with worn tread indicators, either alone or in any combination thereof. 
     It is another object of the present invention to provide a new tire with worn tread indicator which may be easily and efficiently manufactured and marketed. 
     It is a further object of the present invention to provide a new tire with worn tread indicator which is of a durable and reliable construction. 
     An even further object of the present invention is to provide a new tire with worn tread indicator which is susceptible of a low cost of manufacture with regard to both materials and labor, and which accordingly is then susceptible of low prices of sale to the consuming public, thereby making such tire with worn tread indicator economically available to the buying public. 
     Still yet another object of the present invention is to provide a new tire with worn tread indicator which provides in the apparatuses and methods of the prior art some of the advantages thereof, while simultaneously overcoming some of the disadvantages normally associated therewith. 
     Still another object of the present invention is to provide a new tire with worn tread indicator for providing a visual indication that a tire&#39;s tread is worn below a predetermined level. 
     Yet another object of the present invention is to provide a new tire with worn tread indicator which includes a tire with a treaded outer surface having a plurality of alternating tread channels and tread ridges. A plurality of spaced apart elongate gel tubes are embedded in the tire and positioned adjacent the treaded outer surface. In the lumen of each gel tube is a visibly detectable colored liquid therein. 
     Still yet another object of the present invention is to provide a new tire with worn tread indicator that provides a visual indicator to warn a user when to replace worn tires in order to help reduce the risk of a blow-out from a worn tire. 
     Even still another object of the present invention is to provide a new tire with worn tread indicator that may be used in ties with any type of tread arrangement. 
     These together with other objects of the invention, along with the various features of novelty which characterize the invention, are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and the specific objects attained by its uses, reference should be made to the accompanying drawings and descriptive matter in which there are illustrated preferred embodiments of the invention. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The invention will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed drawings wherein: 
     FIG. 1 is a schematic breakaway perspective view of an embodiment of the present invention. 
     FIG. 2 is a schematic perspective view of an embodiment of a gel tube. 
     FIG. 3 is a schematic cross sectional view of an embodiment of the present invention. 
     FIG. 4 is a schematic cross sectional view of the embodiment of the present invention in FIG. 3, with the upper surface worn down to break open some of the gel tubes to release the colored liquid to visibly indicate the location of a worn spot on the treaded outer surface of the tire. 
     FIG. 5 is a schematic transverse cross section view of an embodiment of the gel tube. 
     FIG. 6 is a schematic transverse cross section view of an embodiment of the gel tube with a partition dividing the lumen into two separate chambers. 
     FIG. 7 is a schematic cross sectional view of another embodiment of the present invention with the gel tubes each being extended around the tire. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     With reference now to the drawings, and in particular to FIGS. 1 through 7 thereof, a new tire with worn tread indicator embodying the principles and concepts of the present invention will be described. 
     As best illustrated in FIGS. 1 through 7, the tire with worn tread indicator generally comprises a tire with a treaded outer surface having a plurality of alternating tread channels and tread ridges. A plurality of spaced apart elongate gel tubes are embedded in the tire and positioned adjacent the treaded outer surface. In the lumen of each gel tube is a visibly detectable colored liquid therein. 
     In closer detail, a rubber pneumatic tire  10  has a spaced apart pair of annular side walls  11 , 12  and an annular treaded outer surface  13  interposed between the side walls of the tire and an inner surface the faces the wheel  14  to which the tire is mounted. The treaded outer surface of the tire has a plurality of alternating tread channels  15  and tread ridges  16  therearound that may be of any tread shape and configuration. The tread ridges define an upper surface  17  of the treaded outer surface while the tread channels of the treaded outer surface define a lower surface  18  of the treaded outer surface. The upper and lower surfaces define a tread depth of the treaded outer surface therebetween. 
     A plurality of spaced apart elongate gel tubes  19  are embedded in the tire. Preferably, as illustrated in FIG. 2, each of the gel tubes is a generally triangular prism shape such that each gel tube has a generally triangular transverse cross section substantially perpendicular to a longitudinal axis of the respective gel tube. Each of the gel tubes has at least one vertex  20  and a side  21  opposite this one vertex. The gel tubes are positioned adjacent the treaded outer surface. The one vertex of each gel tubes is preferably positioned in the tire between the upper and lower surfaces of the treaded outer surface and spaced apart a predetermined distance from the upper surface of the treaded outer surface. The side opposite the one vertex of each gel tube preferably faces towards the inner surface of the tire. 
     The longitudinal axes of the gel tubes are preferably extended substantially parallel to one another. In one preferred embodiment, the longitudinal axes of the gel tubes are extended between the side walls of the tire and generally parallel with the axis of rotation of the wheel. With reference to FIG. 7, in another preferred embodiment, the gel tubes are annular in shape and are extended around the tire generally parallel to the tread channels and ridges. 
     Each of the gel tubes has a lumen with a visibly detectable colored liquid therein  22 . In one preferred embodiment, the colored liquid comprises a visibly detectable colored viscous gel. In another preferred embodiment, as shown in FIG. 6, each of the gel tubes has a partition  23  dividing the lumen of the respective gel tube into a pair of separate chambers. The partition of each gel tube is preferably extended from the one vertex of the respective gel tube to an opposite side of the respective gel tube. The colored liquid is provided in one of the chambers of the lumen. In this preferred embodiment, the colored liquid preferably comprises a colored liquid resin. Provided in the other chamber of each gel tube of this preferred embodiment is a liquid hardening agent  24 . When mixed together, the liquid resin and the liquid hardening agent react to form a visibly detectable colored solid. 
     With particular reference to FIG. 4, in use, reducing by wear of the tread depth of the treaded outer surface to a predetermined depth breaks open by wear at least of gel tubes to release the colored liquid therein so that the colored flows on to the threaded outer surface of the tire to provide a visual indicator to a user that the tread depth of the treaded outer surface is less than the predetermined depth. Ideally, the one vertex and the lower surface of the treaded outer surface define the predetermined depth therebetween. In the resin/hardening embodiment, when the gel tube is broken open, the solid formed by the resin and the hardening agent hardens on the treaded outer surface around the worn region to indicate to a user the location of the worn region. 
     As to a further discussion of the manner of usage and operation of the present invention, the same should be apparent from the above description. Accordingly, no further discussion relating to the manner of usage and operation will be provided. 
     With respect to the above description then, it is to be realized that the optimum dimensional relationships for the parts of the invention, to include variations in size, materials, shape, form, function and manner of operation, assembly and use, are deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed by the present invention. 
     Therefore, the foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.