Abrasive Technology, Inc.

Loyal M Peterman, Jr

Yefim Vernik

Roy F Wielonski

A compression molding apparatus and method for the manufacture of abrasive layers for abrasive tooling which provides a compression mold space defined between an inflexible wall surface and a flexible wall surface. The apparatus and method of the present invention is particularly well suited to making annular or hollow cylindrical shaped abrasive layers of novel configurations during a single mold cycle useful for grinding wheel and the like, as well as other shapes such as laps, wherein the flexible wall expanded with fluid pressure provides a highly uniform distribution of pressure against the surface of the mold composition being formed. In an annular configuration, the flexible wall is used to radially direct pressure against a molding composition disposed in an annular configuration wherein the axial length of the annular mold shape formed may be many times greater than priorly obtained by the prior art means.

Apparatus and method for manufacturing abrasive tools

A method of making and the resulting non-metallic CMP conditioning pad comprising a non-metallic substrate and a single layer of abrasive particles bonded to the substrate by a non-metallic bonding medium. Preferred substrates include aluminum oxide and graphite. A bonding system employing finely powdered aluminum oxide particles mixed with a suitable adhesive is employed to bond the abrasive layer to the aluminum oxide substrate. Silicon carbide particles mixed into a compatible adhesive carrier including a polymer composition is preferred for bonding the abrasive particle layer to a graphite or carbide substrate.

CMP diamond conditioning disk

A diamond hone for re-working and correcting lead and involute profile of hardened gears which is characterized by a monolayer of diamond abrasive bonded to a gear hone which is provided with a unique geometry wherein the tip and pitch diameter portions are specifically formed to obtain a predetermined deviation from the true involute form conventionally employed. This new diamond hone and unique geometry imparts the desirable final geometry in the re-worked gear.

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Dublin, OH, United States of America

Loyal M Peterman, Jr