George Fischer Limited

George Fischer Aktiengesellschaft

Jakob Rohr

Cast vehicle wheel rim for tubeless tires

A vehicle wheel rim has a tire-engaging rim portion with two conical portions, one of which lies radially outwardly of a support ring having a conical surface for mounting the rim on a spider or the like. The outer ends of the conical portions terminate at tips and a drop center lies between the conical portions. A radial crosspiece extends from the support ring to about the center of the conical portion outside the support ring. The rim is cast in a mold having two mold halves and an annular core member defining the outer rim surface.

Cast vehicle wheel rim

A cast, one-piece vehicle wheel is made such that the wheel pan with hand-holes passing through it is fastened to the rim such that the intermediate parts of the pan abut on the shoulder, which is formed on the side adjacent the offset wheel pan, and the shoulder extends by lobes in the direction of the drop-center. In the areas of the rim corresponding to hand-holes 10, the shoulders extends over inclined elements into the drop-center.

Cast vehicle wheel

Replaceable T-head bolt for attaching a wheel rim to a wheel body are mounted in the body with the head positioned in a U-shaped recess having side surfaces and a bottom wall through which the bolt shaft extends. A washer on the bolt is held by a cotter pin passing through a hole in the bolt which is angularly offset from the long dimension of the T head. The washer is positioned by shoulders on the outside of the bottom wall, the shoulders having different heights. An L-shaped slot permits lateral insertion of the bolt head after which it is rotated 90.degree..

Growing community of inventors

Schaffhausen, Switzerland

Jakob Rohr