Patent ID: 6152735
Filing Date: 2000-11-28
Classification: A61G

Abstract:
In a dental delivery system control head which includes a control head pan and a hinged cover, the improvement for mounting whip arm assemblies therein, which comprisesa bracket mounted to said control head pan,said bracket having a plurality of spaced vertically extending plates,said plates having bearing journals therein,a plurality of whip arm assemblies carried in said journals between adjacent plates,said whip arm assemblies each including a pair of wheel means,stub shafts extending from said wheel means carried in said plate journals,a rotatable whip arm bushing carried by said wheel means,said wheel means having center walls with grooves therein,pins in said bushing engaged in said grooves limiting the rotational movement of said bushing,a second bushing fixed in said whip arm bushing,a whip arm carried in said second bushing and which extends rearwardly of said wheel means,cutouts in said cover and said pan through which said whip arm projects,clips on said plates over said journals to retain said stub shafts therein, and to engage said pins to center said whip arm andresilient spring means engaged with said wheel means and said bracket to urge said whip arm to a rest position.