4. Cutlery

D. F. Walters

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Cutter actuated rock bit lubrication system

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft – Rotation of bit actuates lubricant feed means
Patent

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Rock bit lubrication system

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft – With fluid pressure-actuated feed means
Patent

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Rotary rock bit with improved thrust flange

Cutlery
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Sealing system for a rotary rock bit

Cutlery
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Profile ID: LFUS-PAI-P-712665

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