LandOfFree - US Patents - Listing for Boring or penetrating the earth,Cutter element laterally shiftable below ground

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure

Actuator for an appliance associated with a ducted body, especia

Boring or penetrating the earth – Cutter element laterally shiftable below ground

Actuator underreamer

Boring or penetrating the earth – Cutter element laterally shiftable below ground

Advanced expandable reaming tool

Boring or penetrating the earth – Cutter element laterally shiftable below ground

Advanced expandable reaming tool

Boring or penetrating the earth – Cutter element laterally shiftable below ground

Advanced expandable reaming tool

Boring or penetrating the earth – Cutter element laterally shiftable below ground – With separable means holding tool collapsed above ground only

Anchoring device and method for settling the device in the groun

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure

Apparatus for drilling enlarged boreholes

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure

Apparatus for extracting minerals through a borehole

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by longitudinally relatively movable...

Apparatus for rotary mining

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by longitudinally relatively movable...

Bit for drilling an undercut hole

Boring or penetrating the earth – Cutter element laterally shiftable below ground – With shifting mechanism spring biased to operative position

Bit torque limiting device

Boring or penetrating the earth – Cutter element laterally shiftable below ground – With shifting mechanism spring biased to operative position

Bit torque limiting device

Boring or penetrating the earth – Cutter element laterally shiftable below ground – With shifting mechanism spring biased to operative position

BIT torque limiting device

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by relatively longitudinally movable...

Bore head for deep-hole boring

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure

Bore hole enlarging arrangement and method

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure

Bore hole underreamer having extendible cutting arms

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by longitudinally relatively movable...

Bore undercutting tool

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure

Borehole opener

Reissue Patent

Boring or penetrating the earth – Cutter element laterally shiftable below ground – Cutter element shifted by fluid pressure

Borehole opener