Abrading – Machine – Endless band tool
Patent
1998-07-10
2000-10-03
Hail, III, Joseph J.
Abrading
Machine
Endless band tool
451299, 451303, B24B 2100
Patent
active
061265276
ABSTRACT:
A polishing tool uses a seal cavity containing a fluid that supports polishing pads against an object being polished. The boundaries of the cavity include a support structure, a portion of a polishing material, and a seal between the support structure and the polishing material. The polishing material moves relative to the support structure and seal. A variety of seal configurations can maintain the fluid within the cavity. In one embodiment the seal mechanism is a labyrinth seal including multiple ridges. In one embodiment, the seal mechanism is a face-sealing seal which includes a jacket with a u-shaped cross section with a compressible element positioned within it. The face-sealing seal is in a groove positioned outside of the cavity. Alternatively, the face-sealing seal forms the outer edge of the cavity. In a further embodiment, the seal is an o-ring seal positioned within a double dove-tailed groove.
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Kao Shu-Hsin
Lapson William F.
Regan Charles J.
Weldon David E.
Aplex Inc.
Hail III Joseph J.
Hong William
Saxon Roberta P.
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