Abstract: The present invention relates to an anti-skid traction device designed to be easily mounted onto a wheel of a motor-vehicle for obtaining greater traction on ice, snow, mud, or sand. One embodiment of the invention is for uses in situations where an automobile has been impaired by road conditions. Another embodiment of the invention is for uses as a road travel device designed for more continuous use where supplemental traction is desired on a long-term basis. Another embodiment of the invention is for use by trucks and other heavier vehicles in severe road conditions. All the embodiments of the present invention are designed to replace snow chains which have already been outlawed except for use on emergency vehicles. The invention disclosed herein provides safety for the road, the environment and the user, in a cost effective manner.

Abstract: A color changing reagent composition and method for coating onto acupuncture needles, syringe needles and other needle containing medical devices which upon contact with such bodily fluids as blood, mucous, saliva, and semen will cause the composition coated needle to change in color to signal a prior use and contamination with a possibly infected bodily fluid. The preferred composition is selected from the group consisting of gualac acid, benzidine, Barfoeds solution, Benedicts solution, cresol, catechol, phenylenediamine, Haynes solution, phenol, leuco malachite green, leuco-crystal violet, peroxidase, pseudoperoxidase, orthotolodine, orthodianisidine, cumene hydroperoxide, tretramethylbenzedene and 2,2-azinodi-(3-ethylbenzyl)azoline sulfunic acid. After the coated needle comes in contact with a bodily fluid having a catalyst it will, upon oxidation, change from being in a colorless state to having a visually detectable color.