Patent ID: 9039099
Filing Date: 2015-05-26
Classification: B28D,E21C

Abstract:
1. A bit/bit holder for road milling machinery comprising: a body of rounded shape having an upper end diametrically smaller than a lower end thereof, said body being solid in a substantial portion thereof, a generally cylindrical shank extending from said lower end of said body, said shank being hollow and including at least one axially oriented elongate slot through a side wall of said shank, said upper end of said body including a bore extending axially therein, an insert retained in said bore forming a unitary structure with said body, said insert including a polycrystalline coated distal tip said bore extending axially in said upper end of said body includes an annular declining taper side wall, said insert having a complementary declining taper side wall for matingly fitting therein, a top of said insert extending outwardly of said bore in said upper end of said body and including a central cylindrical bore therein, and a PCD coated bit receivingly retained in said central bore.