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

Drilling bit with improved trailing edge vent

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

Drilling device

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

Drilling device and method for producing undercut holes

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

Drilling head with a cone rock bit

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

Drilling tool

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

Drilling tool with rotating conical rollers

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

Drilling with mixed tooth types

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

Dual dynamic rotary seal

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

Dual grade carbide substrate for earth-boring drill bit...

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

Dual metal face seal with single recessed energizer

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

Dual property hydraulic configuration

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

Dual-seal drill bit pressure communication system

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

Dual-seal drill bit pressure communication system

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

Dual-seal drill bit pressure communication system

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

Dual-seal drill bit pressure communication system

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

Duckbill with cutting teeth

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

Dynamic seal with soft interface

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

Dynamically stable hybrid drill bit