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

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

Reversible bit assembly

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

Revolving cutters for rock bits

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

Ring clamp for a cutter ring in a tunnel drilling machine

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

Ring cutter for tunnel drilling in rock

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

Road surface recessing device

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

Rock auger with pilot drill

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

Rock bit

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

Rock bit

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

Rock bit

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

Rock bit

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

Rock bit and improved forging method for manufacturing thereof

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

Rock bit borhole back reaming method

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

Rock bit circulation nozzle

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

Rock bit combination to enhance cuttings removal

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

Rock bit cone retention system

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

Rock bit construction

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

Rock bit cutter retainer

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

Rock bit face seal having anti-rotation pins

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

Rock bit face seal having lubrication gap