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  Belt and method of markingUSPTO Application #: 20060081327Title: Belt and method of marking Abstract: A method of marking a belt comprising the steps of selecting a first thermoplastic layer that is optically distinguishable from a belt body, joining the first thermoplastic layer to the belt body, joining a second thermoplastic material layer to the first thermoplastic layer, etching the first thermoplastic layer in order to contrast the first thermoplastic layer with the belt body, and etching the second thermoplastic layer in order to contrast the second thermoplastic layer with the first thermoplastic layer. (end of abstract) Agent: The Gates Corporation - Denver, CO, US Inventor: Douglas R. Sedlacek USPTO Applicaton #: 20060081327 - Class: 156182000 (USPTO) Related Patent Categories: Adhesive Bonding And Miscellaneous Chemical Manufacture, Methods, Surface Bonding And/or Assembly Therefor, Of At Least Two Bonded Subassemblies The Patent Description & Claims data below is from USPTO Patent Application 20060081327. Brief Patent Description - Full Patent Description - Patent Application Claims
REFERENCE TO RELATED APPLICATIONS [0001] This application is a divisional of and claims priority from U.S. non-provisional application No. Ser. No. 10/601,263 filed Jun. 20, 2003. FIELD OF THE INVENTION [0002] The invention relates to a belt and method of marking a belt and more particularly, to a belt and method of marking a belt using at least one optically distinguishable polyethylene layer. BACKGROUND OF THE INVENTION [0003] Belts may be manufactured with or without marking indicia. Marking indicia may comprise labels, text or other material impressed or printed directly on the belt or a combination of the foregoing. [0004] More particularly, the prior art teaches use of a non-vulcanized colored rubber which is adhered to a base material. During vulcanization the colored rubber is imprinted upon the underlying material. This often results in distorted markings or undesirable surface features, such as dips of bumps. Such dips or bumps can cause noise during operation of the belt. It is also known that a laser may be used to apply a mark to a belt by burning or etching a mark in a product surface. [0005] Representative of the art is Japanese Patent No. 3126937 which discloses a method for marking a belt. What is needed is a belt and a method of marking a belt using a polyethylene layer that is optically distinguishable from a belt body. What is needed is a belt and a method of marking a belt using an optically distinguishable polyethylene layer etched by a laser light. The present invention meets these needs. SUMMARY OF THE INVENTION [0006] The primary aspect of the present invention is to provide a belt and a method of marking a belt using a polyethylene layer that is optically distinguishable from a belt body. [0007] Another aspect of the invention is to provide a belt and a method of marking a belt using an optically distinguishable polyethylene layer etched by laser light. [0008] Other aspects of the invention will be pointed out or made apparent by the following description of the invention and the accompanying drawings. [0009] The invention comprises a method of marking a belt comprising the steps of selecting a first thermoplastic layer that is optically distinguishable from a belt body, joining the first thermoplastic layer to the belt body, joining a second thermoplastic material layer to the first thermoplastic layer, etching the first thermoplastic layer in order to contrast the first thermoplastic layer with the belt body, and etching the second thermoplastic layer in order to contrast the second thermoplastic layer with the first thermoplastic layer. BRIEF DESCRIPTION OF THE DRAWINGS [0010] FIG. 1 is a cross sectional perspective view of a belt having an optically distinguishable polyethylene layer. [0011] FIG. 2 is a perspective view of a belt having an optically distinguishable layer etched by laser light. [0012] FIG. 3 is a cross-sectional view of a multi-ribbed profile. DETAILED DESCRIPTION OF THE INVENTION [0013] FIG. 1 is a cross sectional perspective view of a belt having an optically distinguishable polyethylene (PE) layer. The illustrative product comprises a power transmission belt 100 used, for example, in an automotive or industrial application. [0014] Belt 100 comprises an elastomeric body 10 with tensile members 20 embedded therein. The tensile members 20 extend parallel to a longitudinal axis. Tensile members 20 may comprise any material known in the belt art, including polyester, nylon, aramid and their equivalents. Tensile members 20 extend longitudinally within the body 10. [0015] A profile comprising transverse teeth or cogs 11 extend transverse to and along a longitudinal surface of the belt body 10. The profile may also comprise a multi-ribbed surface, see FIG. 3. [0016] Layer 30 comprises a thermoplastic material. Thermoplastic layer 30 is joined to body 10 by use of any suitable cure, chemical adhesive or molding process known in the art. Although the preferred embodiment uses a peroxide cure process, thermoplastic layer 30 may also be joined to body 10 using chemical adhesives known in the art and by molding. [0017] Body 10 may comprise thermoset elastomeric material such as hydrogenated nitrile butadiene rubber (HNBR), ethylene-propylene (diene) rubber (EPDM), styrene-butadiene rubber (SBR), chloroprene rubber (CR), natural rubber (NR), nitrile rubber (NBR), butyl rubber (BR) or any other elastomeric materials used in power transmission belts. [0018] Layer 30 is selected with beneficial characteristics to create an optical appearance or contrast that is distinguishable from a belt body 10 or adjacent layer. Optical as used herein refers to visual and non-visual electromagnetic (EM) radiation. Layer 30 has a thickness in the range of approximately 3.5 mils to 30 mils. Continue reading... Full patent description for Belt and method of marking Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Belt and method of marking 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 Belt and method of marking or other areas of interest. ### Previous Patent Application: Method of manufacturing segmented belt tires Next Patent Application: Stacking apparatus and method for assembly of polymer batteries Industry Class: Adhesive bonding and miscellaneous chemical manufacture ### FreshPatents.com Support Thank you for viewing the Belt and method of marking patent info. 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