A cutting bit assembly for impinging an earth strata

Details A cutting bit assembly for impinging an earth strata A cutting bit assembly for impinging an earth strata

E - Fixed Constructions

21

C

E21C 35/19 (2006.01) E21B 10/60 (2006.01) F16B 21/12 (2006.01) E21C 35/18 (2006.01)

Patent

CA 2267306

A cutting bit assembly (30) which includes a driven member (66) and a cutting bit (22) detachably connected to the driven member by a retainer (70, 72). The retainer includes a magnetic pin (70, 72) that removably engages at least one of the cutting bit (22) and the driven member (66).

Cette invention se rapporte à une unité à trépan tranchant (30), qui comprend un élément mené (66) et un trépan tranchant (22) monté amovible sur l'élément mené à l'aide d'un organe de retenue (70, 72). Cet organe de retenue comporte une broche magnétique (70, 72) qui s'engage de façon amovible dans le trépan tranchant (22) et/ou dans l'élément mené (66).

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