LandOfFree - US Patents - Listing for Boring or penetrating the earth,Bit or bit element

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

Single energizer face seal for rocks bits with floating...

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

Single-cone rock bit having cutting structure adapted to...

Boring or penetrating the earth – Bit or bit element – Bit with leading portion forming smaller diameter initial bore

Single-pass notching and drilling tool and method of drilling a

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Sintered and forged article, and method of forming same

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

Skewed inserts for an earth boring cutter

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

Small disc cutter, and drill bits, cutterheads, and tunnel borin

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

Soft formation drill bit

Boring or penetrating the earth – Bit or bit element – Core forming type

Soil auger

Boring or penetrating the earth – Bit or bit element – With helical-conveying portion

Soil displacement auger head for installing piles in the soil

Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet

Solid head bit with tungsten carbide central core

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

Solid lubricant for air cooled drill bit and method of drilling

Boring or penetrating the earth – Bit or bit element – Core forming type

Sonic drill bit for core sampling

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

Spacer ring for elastomeric seal

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Spade drill bit construction

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Specially shaped cutting element for earth boring apparatus

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

Spherical bit

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

Spindle cap bearing for rotary cone rock bits

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

Spiral wave bladed drag bit

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Split blade rotary drag type drill bits