Metal tools and implements – making – Blank or process – Drill
Reexamination Certificate
2006-09-12
2006-09-12
Eley, Timothy V. (Department: 3724)
Metal tools and implements, making
Blank or process
Drill
C076SDIG011, C076SDIG012
Reexamination Certificate
active
07104160
ABSTRACT:
A method for producing a cutting tool such a twist grill, end mill, or the like. The method provides an unbonded assembly including a cylindrical core having ends and an elongate side surface covered partially or completely by a coherent, unsintered layer including ultra-hard abrasive particles for producing an ultra-hard material. The unbonded assembly is subjected to elevated temperature and pressure conditions at which the ultra-hard abrasive is crystographically stable. The sintered product is then recovered that includes a cylindrical core and a layer of ultra-hard abrasive material bonded to the core, and the sintered product is worked to produce one or more cutting edges in the layer of ultra-hard abrasive material.
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Fries Robert
Sigalas Iakovos
Eley Timothy V.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Prone Jason
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