Patent ID: 11897087
Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 5:
6. A diamond polishing comprising:
a holder comprising a diamond-holding foot configured to temporarily secure a substrate, with an epitaxial diamond film grown on the substrate, the diamond film having a thickness less than 50 microns;
a shaft upwardly extending from the holder;
a sealed, ball and socket joint coupling the shaft to the holder;
a substantially horizontally elongated arm including a receptacle within which is mounted the shaft, whereby gravity acting on the arm causes the holder to push toward an actuator-driven polishing lap;
an actuator-driven transmission causing the arm to move the holder in a radial sweeping motion between inner and outer portions of the lap during polishing;
an enclosure, including a filtered air supply, within which are located the holder and the lap during the polishing; and
downward polishing forces caused by the gravity between the diamond film and the lap are less than 5 kg/cm2.