LandOfFree - US Patents - Listing for Boring or penetrating the earth,With storage means for bit lubricant carried by bit or shaft

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Roller reamer apparatus

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 drill bit

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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Rotary drill bit

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft

Patent

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Rotary earth boring drill bit with centrifugal foreign particle

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft

Patent

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Rotary earth boring drill bit with centrifugal lubrication syste

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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Sealed and lubricated rock bit with air protected seal ring

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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Sealed lubricated and air cooled rock bit bearing

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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Sealing structure for a rock drill bit

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

Reexamination Certificate

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Self compensating seal apparatus

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft

Patent

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Self-lubricating well tools and seal elements therefor

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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Stabilized conical boring tool

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft

Patent

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Thrust face lubrication system for a rolling cutter drill bit

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft

Patent

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Thrust flange 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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Two-piece pressure relief valve

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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Valve assembly for drill 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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Viscous pump 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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