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

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

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

Split cone bit

Boring or penetrating the earth – Bit or bit element – Impact or percussion type

Squaring off and reaming tool for deep elongated trench excavati

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

Stability enhanced drill bit and cutting structure having zones

Boring or penetrating the earth – Bit or bit element – Noncutting portion forwardly of cutting portion

Stabilizer and blade attachment means therefor

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

Stabilizer blade

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

Stabilizing drill bit

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

Stabilizing drill bit with improved cutting elements

Boring or penetrating the earth – Bit or bit element – With bit guide or bore wall compacting device

Stabilizing system and methods for a drill bit

Boring or penetrating the earth – Bit or bit element – With bit guide or bore wall compacting device

Stabilizing system and methods for a drill bit

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

Steel body drill bits with tailored hardfacing structural...