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

Bar trimmers on disk bit

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

Barrier coated granules for improved hardfacing material

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

Barrier coated granules for improved hardfacing material...

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

Bearing and lubrication system for earth boring bit

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

Bearing seal

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

Bearing seal

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

Bearing sealing means of earth boring bits

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

Bi-center and bit method for enhancing stability

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

Bi-center bit adapted to drill casing shoe

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

Bi-center bit assembly

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

Bi-center bit with oppositely disposed cutting surfaces

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

Bi-center drill bit

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

Bi-centered drill bit having enhanced casing drill-out...

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

Bi-centered drill bit having improved drilling stability mud...

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

Bi-centered drill bit having improved drilling stability,...

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

Biased nozzle arrangement for rolling cone rock bits

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

Bifurcated drill bit construction

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

Bit apparatus

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

Bit assembly