发明授权
US4657308A Mineral cutter pick 失效
矿物切割机

Mineral cutter pick
摘要:
A mineral cutter pick 1 comprises a head 2 terminating at one end thereof in a hard material tip 3, an integral shank 4 extending from the head 2 in a direction away from the tip 3, at least one laterally extending shoulder 5 provided on the head 2, and a bore 6 extending through the shoulder 5, generally in the longitudinal direction 8 of the pick 1, through which bore 6 a water spray or jet may be passed.
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