E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
E21C 35/18 (2006.01) E21C 35/183 (2006.01) E21C 35/197 (2006.01)
Patent
CA 2150246
A cutting tool (20) for use in excavating an earth formation comprising an elongate tool body (22) having a hard tip (26) being affixed to the forward end thereof. The hard tip (26) has a plurality of integral, coaxial sections including an integral ribbed section which presents a plurality of longitudinal ribs (62) about the circumference thereof. The tip (26) further includes an integral lobed base section (94) which presents a plurality of radially extending lobes (96). An integral transition region provides a transition between the ribbed section and the base section (94).
Outil de coupe (20) utilisé pour excaver une formation terrestre et comprenant un outil de coupe allongé (22) pourvu d'une pointe dure (26) fixée à son extrémité avant. La pointe dure (26) comprend une multiplicité de sections solidaires et coaxiales, y compris une section solidaire pourvue de plusieurs nervures longitudinales (62) autour de sa circonférence. La pointe (26) comporte en outre une section inférieure solidaire (94) présentant plusieurs bosses (96) s'étendant radialement. Une région de transition solidaire produit une transition entre la section à nervures et la section inférieure (94).
Massa Ted R.
Prizzi John J.
Kennametal Inc.
Smart & Biggar
LandOfFree
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