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

Self relieving seal

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

Self relieving seal

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

Self sharpening drag bit for sub-surface formation drilling

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

Self sharpening steel tooth cutting structure

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

Self-centering polycrystalline diamond cutting rock bit

Boring or penetrating the earth – Bit or bit element – Nonsymmetrical bit

Self-drilling dowel with an inclined rolling head

Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element

Self-excited drill bit sub

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

Self-lubricating elastomeric seal with polarized graphite

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

Self-penetrating drilling method and thrust-generating tool...

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

Self-propelled earth drilling hammer-bit assembly

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

Self-renewing multi-element cutting structure for rotary drag bi

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

Self-retaining downhole-hammer drill bit

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

Shaft drill bit with improved cutter bearing and seal arrangemen

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

Shaft drill bit with overlapping cutter arrangement

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

Shale diverting means for a sealed bearing drill bit

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

Shank structure for rotary drill bits

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

Shaped cutting-grade inserts with transitionless...

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

Shaped inserts with increased retention force

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

Shaped polycrystalline cutter elements