Control apparatus for the uniformity machine

Details Control apparatus for the uniformity machine Control apparatus for the uniformity machine

1993-06-25

1995-02-21

Goldstein, Herbert

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

E01C 2300, G01M 1702

Patent

active

053905407

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.

REFERENCES:
patent: 4852398 (1989-08-01), Cargould et al.
patent: 4971128 (1990-11-01), Koga et al.
patent: 5029467 (1991-07-01), Cargould et al.
patent: 5107703 (1992-04-01), Ota

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