THOMAS JAMES CLARK, LPN
Nursing at Shear Dr, Powell, OH

5405573, Apr 11, 1995

May 4, 1992

7/857192

Thomas J. Clark - Powell OH
Roger R. Matarrese - Upper Arlington OH
Roger W. McEachron - Worthington OH
Sergio Sinigaglia - Brescia, IT

General Electric Company - Worthington OH

B22F 310, B22F 704

419 35

The present invention addresses problems in the diamond saw blade and segment art. One aspect of the invention comprises a method for making handleable, strong, discrete, metal-clad abrasive pellets. This method comprises the steps of: (a) spraying onto a bed of gas-fluidized abrasive particles a slurry of metallic powder, a binding agent, and a volatile solvent until substantially all the abrasive particles are coated with at least about 20 wt-% of the metallic powder; (b) recovering the metal powder coated abrasive particles; and (c) heating said recovered coated particles under conditions to form a sintered continuous metal coating enveloping said abrasive particles. The resulting sintered metal-clad pellets form another aspect of the invention. Another aspect of the invention comprises a method for making saw blade segments from metal-clad abrasive particles, comprising the steps of: (a) placing a plurality of abrasive pellets, each comprising an abrasive particle coated with at least about 20 wt-% sintered metal, in a mold cavity; and (b) heating the contents of such mold cavity under conditions effective for forming an abrasive particle containing saw blade segment.

5300129, Apr 5, 1994

Jan 19, 1993

8/005951

Thomas J. Clark - Powell OH

General Electric Company - Worthington OH

B24B 100

51295

The invention is directed to cubic boron nitride (CBN) particles coated with a thin inner layer formed by the reaction of a reactive glass or ceramic to form a chemical bond and, optionally, an outer layer of a vitreous material. The particles are useful as abrasive particles in a vitreous bonding matrix. In addition, a method of preparing the particles and abrasive tools containing the particles are encompassed.

4883500, Nov 28, 1989

Oct 25, 1988

7/262405

Martin E. Deakins - Dublin OH
David E. Slutz - Worthington OH
Neil R. Johnson - Columbus OH
Thomas J. Clark - Powell OH
Harold P. Bovenkerk - Worthington OH

General Electric Company - Worthington OH

C09K 314

51298

The present invention provides saw blade segments comprising polycrystalline diamond cutting elements and single crystal diamond cutting elements dispersed in a bonding matrix. In a preferred embodiment abrasion resistant particles are included so as to cause non-uniform wearing of the cutting segments. In another aspect of the invention, cutting segments are provided which utilize surface set polycrystalline diamond cutting elements larger than mesh size 18.