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

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

Locking apparatus for earth boring cutter or stabilizer

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

Long barrel inserts for earth-boring bit

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

Long-life milled tooth cutting structure

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

Low cutter load raise head

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

Low pressure drill bit

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

Magnetic face seal for rock drill bit bearings

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

Matrix hard facing by lost wax process

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

Means for mounting a roller cutter on a drill bit

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

Means for retaining roller cutters on rotary drill bit

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

Mechanical lock to prevent seal ring rotation

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

Mechanically shaped hardfacing cutting/wear structures

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

Metal cutting tools utilizing gradient composites

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

Metal face seal for an earth-boring bit

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

Metal seal with impact-absorbing ring

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

Metal-face-seal rock bit

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

Method and apparatus for drilling and enlarging a borehole

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

Method and apparatus for fabricating rotary cone drill bits

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

Method and apparatus for fabricating rotary cone drill bits

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

Method and apparatus for retaining roller cone of drill bit