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

Land erosion protection on a rock cutter

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

Large compact cutter rotary drill bit utilizing directed hydraul

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

Large diameter bit with sweep pickup

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

Large diameter drill bit

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

Large diameter oil well drilling bit

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

Large diameter rock drill

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

Latchable reaming bit

Boring or penetrating the earth – Bit or bit element – Cutting edges relatively longitudinally movable during...

Lateral entry guidance system (LEGS)

Boring or penetrating the earth – Bit or bit element – With helical-conveying portion

Lawn aerator

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

Layered hardfacing, durable hardfacing for drill bits

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

Lip seal for roller cone drill bit

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

Liquid seal for wet roof bit

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 – Plural separable cutter elements

Locking device for hard metal inserts

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 – Magnetized or with magnet

Longitudinal axis roller drill bit with gage inserts protection

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

Loose crown underreamer apparatus

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

Low cutter load raise head