Patent ID: 7727052
Filing Date: 2010-06-01
Classification: B24B

Abstract:
1. A device for rendering CMP polishing pads easily and temporarily removable from and replaceable upon a platen of a CMP polishing apparatus, said device comprising two sheets consisting of an upper sheet attached to the said CMP polishing pad and a lower sheet attached to the said platen, the said two sheets being held together by pegs, pins or protrusions fitted to matching holes in an upper surface of the lower sheet and in a lower surface of the upper sheet, wherein said pegs or pins are attached to one of the upper and the lower sheet and are inserted in the holes of the either sheet, but in no event are the pegs, pins or protrusions inserted so far that the pegs, pins or protrusions protrude above or are even with the upper surface of the upper sheet, when the sheets are brought together, to hold the sheets together by means of sliding friction attendant upon a tight fit with the said holes.