Hofmann Maschinenbau Gmbh

Heinz Ronge

Werner Lehr

Heinz Kupka

In a method and apparatus for centering a rotary body such as a motor vehicle tire the rotary body is put into a centered position by means of a plurality of centering means which engage the circular periphery of the rotary body at distributed positions around the periphery thereof and which are acted upon by a centering force. The centering force acting on the centering means is set to be proportional to the diameter of the rotary body.

Method and apparatus for centering a rotary body

Apparatus for fitting a motor vehicle tire on a disc wheel comprises a tire fitting tool mounted rotatably about an axis, an electric drive motor to drive the tire fitting tool about the axis, a current supply means for the drive motor, and a torque limiting means to terminate the rotary drive to the motor when a predetermined torque transmitted to the tire fitting tool is exceeded, thereby to protect the tire from overloading in the fitting operation.

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Darmstadt, Germany

Heinz Ronge