Stone working – Sawing – Disk cutting
Patent
1996-02-01
1999-12-07
Banks, Derris H.
Stone working
Sawing
Disk cutting
451540, 451541, B28D 102
Patent
active
059965711
ABSTRACT:
The present invention provides a hole saw or core drill bit for cutting annular holes in materials such as concrete, asphalt, masonry, rock, stone and related materials. The bit includes an elongated cylindrical body having a first end portion and a second end portion, a mounting platform at the first end of the body for attaching the bit to a driver and a cutting head at the second end of the body. The cutting head constitutes a plurality of cutting segments mounted on the annular face of the second end portion of the body. Each of the segments includes an outer portion, a middle portion and an inner portion. Each of the portions includes diamond particles dispersed throughout. The inner portions and the outer portions of the segments each have a greater concentration of diamond particles as compared to the middle portions. This dispersion of diamond particles provides a core drill bit with improved performance.
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Diamond Products, Inc. promotional brochure dated Jan. 1, 1988.
Banks Derris H.
Diamond Products Joint Venture
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