LandOfFree - US Patents - Listing for Boring or penetrating the earth

Boring or penetrating the earth – Processes – Boring with specific fluid

Vacuum excavator

Boring or penetrating the earth – Processes – Boring with specific fluid

Vacuum feed supply system for drilling fluid additives

Boring or penetrating the earth – Processes – Boring with specific fluid

Vacuum tank for use in handling oil and gas well cuttings

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Vacuum, vacuum-pressure, or pressure circulation bit having jet-

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Vacuum, vacuum-pressure, or pressure reverse circulation bit

Boring or penetrating the earth – Below-ground impact members – Fluid-operated

Valve assembly for a downhole to remove bore hole subsidence

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

Valve assembly for drill bit lubrication system

Boring or penetrating the earth – With signaling – indicating – testing or measuring

Valve for drilling fluid telemetry systems

Boring or penetrating the earth – With above-ground means for handling drilling fluid or cutting – With valve

Valve method for drilling with casing using pressurized...

Boring or penetrating the earth – Below-ground impact members – Fluid-operated

Valve used in a hydraulic drilling jar

Boring or penetrating the earth – Automatic control – In response to drilling fluid circulation

Valved jet device for well drills

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Variable depth grooved drill string member

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector

Variable diameter drill rod stabilizer

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Variable diameter earth boring bit

Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector

Variable gauge drilling apparatus and method of assembly...

Boring or penetrating the earth – Below-ground impact members – Fluid-operated

Variable hydraulic resistor jarring tool

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Variable length three-cone rock bit nozzles

Boring or penetrating the earth – With below-ground tool drive prime mover – With means to anchor prime movers support to bore wall

Variable linkage assisted gripper

Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element

Variable orientation nozzles for earth boring drill bits,...