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

Face seal having strain induced face geometry

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

Failure indicator for rolling cutter drill bit

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

Fishtail expendable diamond drag bit

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

Fixed blade fixed cutter hole opener

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

Fixed cutter bit and blade for a fixed cutter bit and...

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

Fixed cutter bit with chisel or vertical cutting elements

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

Fixed cutter bit with improved diamond filled compacts

Boring or penetrating the earth – Bit or bit element – Cutting edges facing in opposite axial directions

Fixed cutter bit with shear cutting gage

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

Fixed cutter drill bit with non-cutting erosion resistant...

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

Fixed cutter drill bits with thin, integrally formed wear and er

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

Fixed-head bit with stabilizing features

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

Flat bottom drilling bit with polycrystalline cutters

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

Flat profile cutting structure for roller cone drill bits

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

Flat seal for a roller cone rock bit

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

Flightless rock auger for use with pressure drills with...

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

Flightless rock auger for use with pressure drills with...

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

Flightless rock auger with quick attachment and method of use

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

Flow channels for tooth type rolling cutter drill bits

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

Flow diverter ring for a rotary drill bit and method