| 摘要 |
A support head capable of generating suction upon the rotation thereof has a body that defines a first surface, a second surface opposing the first surface, a peripheral edge, and an open region formed in a central portion of the second surface. Work producing elements such as spray nozzles are mounted in the first surface. Each of a first plurality of holes extends between the first surface and the second surface. Each of a second plurality of holes extends between the peripheral edge of the body and the open region of the body. When the body is positioned over the surface with the first surface opposing same, suction forces are generated as the body is rotated.
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