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

Cutter assembly for rotary boring of earth

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

Cutter assembly having a plurality of independently rotatable cu

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

Cutter bit for use in drilling operations

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

Cutter configuration for a gage-to-shoulder transition and face

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

Cutter element adapted to withstand tensile stress

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

Cutter element adapted to withstand tensile stress

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

Cutter element and cutter for rock drilling

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

Cutter element with expanded crest geometry

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

Cutter element with non-linear, expanded crest

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

Cutter element with non-linear, expanded crest

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

Cutter element with non-rectilinear crest

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

Cutter elements for hollow drill bit

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

Cutter for maintaining edge sharpness

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

Cutter for tunnel boring machine

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

Cutter having shaped working surface with varying edge chamfer

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

Cutter having shaped working surface with varying edge chamfer

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

Cutter head for pit-boring machine

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

Cutter head for rotary percussion drills

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

Cutter head for trenchless boring machine