Abstract: A dust collection and removal system for use in conjunction with a tire uniformity machine includes a grinding wheel shroud having a vacuum aperture therein. The vacuum aperture is connected to a vacuum source. An air nozzle is centrally mounted in the vacuum aperture. The air nozzle is connected to a source of pulsed air thereby allowing a blast of air to be directed at the tire surface during or immediately after grinding to dislodge dust particles adhered to the tire. The dislodged dust particles are then removed via the vacuum. A related method of collecting and removing dust includes mounting a vacuum hose adjacent to the grinding face, mounting an air nozzle in the center of the vacuum hose, directing a blast of air toward the tire surface via the nozzle, and removing and collecting the dislodged dust particles via the vacuum hose.

Abstract: A method of controlling movement of the lower chuck of a tire uniformity machine toward the upper chuck by controlling acceleration and deacceleration of the lower chuck in response to pressure encountered during its movement. One embodiment of the apparatus utilizes a low-range pressure switch connected to a pump which activates a cylinder driving the lower chuck and which senses the pressure and controls the pump in response thereto. This embodiment also employs a high-range pressure switch for sensing closing pressure. Another embodiment substitutes a linear displacement transducer and linear electrohydraulic servo actuator for the switches.

Abstract: A system for changing the chucks of a tire uniformity machine includes a control which inactivates the main machine hydraulic and electrical system. The control also activates the chuck changing system which includes a small hydraulic power unit and a low set pressure relief valve for raising and lowering the lower chuck assembly and a small gearmotor for rotating the upper chuck assembly to facilitate removal of the upper chuck. The small hydraulic power unit and gearmotor, while mounted on the tire uniformity machine, operate entirely independently thereof for safety purposes.

Abstract: A control system for controlling air pressure to a tire during the testing cycle of a tire uniformity machine includes a mechanical regulator connected to a source of air and a transducer disposed adjacent the tire and in communication with a central processing unit and the regulator to match sensed variations with predetermined testing pressure programmed into the central processing unit and activate the regulator as required.