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

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

Partially enhanced percussive drill bit

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

Particle-matrix composite drill bits with hardfacing

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

Passive and active up-drill features on fixed cutter...

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

PCD face seal for earth-boring bit

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

PCD face seal for earth-boring bit

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

PCD face seal for earth-boring bit

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

PDC clad drill bit insert

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

PDC cutter and bit

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

PDC cutter element having improved substrate configuration

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

PDC cutter element having improved substrate configuration

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

PDC drag bit with improved hydraulics

Boring or penetrating the earth – Bit or bit element

PDC drill bit having cutting structure adapted to improve...

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

PDC drill bit using optimized side rake angle

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

PDC insert featuring side spiral wear pads

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

Percussion bit drill drive collar with retention mechanism...

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

Percussion borer for forming bores in stone material

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

Percussion drill bit

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

Percussion drill bit

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

Percussion drill bit