Patent ID: 7086132
Filing Date: 2006-08-08
Classification: B24B,G01M,Y10T

Abstract:
1. A method for assembling a polishing head while inspecting for air leakage in the polishing head, comprising: i) assembling an inner tube to a housing and a base; ii) supplying a first pressure through a first pressure line to a first tube connected to the inner tube and inspecting for air leakage by determining if there is any variation in the first pressure in the first tube connected to the inner tube; iii) assembling a membrane to the base once the inner tube is assembled; iv) supplying a second pressure through a second pressure line to a second tube connected to the membrane and inspecting for air leakage by determining if there is any variation in the second pressure in the second tube connected to the membrane; v) supplying a first level of vacuum through a first vacuum line to the second tube connected to the membrane and inspecting for air leakage by determining if there is any variation in the level of vacuum in the second tube connected to the membrane; vi) assembling a retainer ring to the base once the membrane is assembled, thereby completing an assembling of the polishing head; vii) supplying a third pressure through a third pressure line to a third tube connected to the retainer ring and inspecting for air leakage by determining if there is any variation in the third pressure in the third tube connected to the retainer ring; and viii) supplying a second level of vacuum through a second vacuum line to the third tube connected to the retainer ring and inspecting for air leakage by determining if there is any variation in the second level of vacuum in the third tube connected to the retainer ring.