John White Hardy
Accountancy in Provo, UT
License number
Utah 124665-2601
Issued Date
Jan 1, 1910
Expiration Date
Sep 30, 2012
Category
Accountancy
Type
Certified Public Accountant
Address
Address
Provo, UT
Professional information
Composite Polycrystalline Cutting Element With Improved Fracture And Delamination Resistance
US Patent:
5355969, Oct 18, 1994
Filed:
Mar 22, 1993
Appl. No.:
8/036540
Inventors:
John W. Hardy - Provo UT
Bill J. Pope - Provo UT
Kevin G. Graham - Payson UT
Robert J. Farr - Orem UT
Bill J. Pope - Provo UT
Kevin G. Graham - Payson UT
Robert J. Farr - Orem UT
Assignee:
U.S. Synthetic Corporation - Provo UT
International Classification:
E21B 1046
US Classification:
175432
Abstract:
A cutting implement formed from a substrate of carbide, or other hard substance, bonded to a polycrystalline layer which serves as the cutting portion of the implement. The interface between the substrate and polycrystalline layer is defined by surface topography with radially spaced-apart protuberances and depressions forming smooth transitional surfaces.