Patent ID: 8490634
Filing Date: 2013-07-23
Classification: H01L,Y10T

Abstract:
1. A device for treating a disc-like article with a fluid, the device comprising: dispensing means for dispensing a fluid onto the disc-like article and a chuck for holding and rotating a disc-like article about an axis A perpendicular to the disc-like article, the chuck comprising a base body, a drive ring, and gripping members for contacting the disc-like article at its edge, wherein the gripping members are eccentrically movable with respect to the centre of the disc-like article, wherein the eccentric movement of the gripping members is driven by a drive ring, wherein the drive ring is rotatable mounted to the base body, so that the drive ring is rotatable against the base body around the axis A and thereby driving the gripping members, wherein the relative rotational movement of the drive ring against the base body is carried out by either holding the base body and rotating the drive ring or by holding the drive ring and rotating the base body, whereby the to-be-held-part (drive ring or base body) is held without touching the respective to-be-held-part by magnetic force, and wherein the drive ring is a gear ring and the gripping members are cams eccentrically mounted to smaller gears (eccentric with respect to the rotation axis of the smaller gears), which are driven by the gear ring.