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

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 – 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 – Rolling cutter bit or rolling cutter bit element

Split cone 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...

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

Steel tooth bit with a bi-metallic gage hardfacing

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

Steel tooth bit with extra-thick hardfacing

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

Steel tooth cutter element with expanded crest

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

Steel tooth cutter element with gage facing knee

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

Steel tooth drill bit with improved tooth breakage resistance

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

Steep angle raise bit

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

Straight hole insert drill bit

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

Streamlined mill-toothed cone for earth boring bit

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

Stressed relieved bit leg for an earth boring bit

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

Superabrasive cutting elements for rotary drag bits...

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

Superabrasive element, and superabrasive compact and drill...

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

Superhard material enhanced inserts for earth-boring bits

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

Surface modifications for rotary drill bits