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

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

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

Cutter head mounting for drill bit

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

Cutter head, drill bit and similar drilling tools

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

Cutter mounting and apparatus and method for a drill bit

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

Cutter mounting extension apparatus

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

Cutter mounting for a large hole earth boring bit

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

Cutter mounting for drag bits