Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1990-01-10
1991-10-22
Rachuba, M.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51216LP, 51237R, B24B 4702
Patent
active
050583280
ABSTRACT:
The wafer centering assembly includes a pair of pivot arms which can be pivoted simultaneously to adjust to the diameter of a conveyed wafer. Each pivot arm has a stop which arrest the motion of a wafer such that the axis of the wafer is approximately centered on the axis of a vacuum head.
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patent: 774563 (1904-11-01), Clark
patent: 2019789 (1935-11-01), Mahannah
patent: 2418463 (1947-04-01), Coleman
patent: 2887918 (1959-05-01), Benson
patent: 4524959 (1985-06-01), Kubo
patent: 4638601 (1987-01-01), Steere et al.
patent: 4721198 (1988-01-01), Yajima et al.
Leonard Thomas E.
Steere, III Robert E.
Rachuba M.
Silicon Technology Corporation
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