LandOfFree - US Patents - Listing for Boring or penetrating the earth

Boring or penetrating the earth – Boring by directly applying heat to fluidize or comminute – Combustion is confined chamber having restricted discharge...

Flame jet tool for drilling to great depths

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

Flat bottom drilling bit with polycrystalline cutters

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

Flat profile cutting structure for roller cone drill bits

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

Flat seal for a roller cone rock bit

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along...

Flexible centralizer

Boring or penetrating the earth – Boring by directly applying heat to fluidize or comminute – Combustion of the formation material

Flexible conduit for effecting lateral channelling in coal or oi

Boring or penetrating the earth – With below-ground tool drive prime mover – Fluid rotary type

Flexible coupling for progressive cavity downhole drilling motor

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Axially spaced opposed bore wall engaging guides

Flexible directional drilling apparatus and method

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...

Flexible drill pipe

Boring or penetrating the earth – With tool shaft detail

Flexible drill string member

Boring or penetrating the earth – With tool shaft detail – Helix or helically arranged structure

Flexible drill string member especially for use in directional d

Boring or penetrating the earth – Tool element or continuously driven flexible or articulated...

Flexible hose with thrusters for horizontal well drilling

Boring or penetrating the earth – With means movable relative to tool to receive – retain – or... – Core-retaining or severing means

Flexible plug for obtaining soil samples during drilling operati

Boring or penetrating the earth – Processes

Flexible shaft drilling system

Boring or penetrating the earth – Means traveling with tool to constrain tool to bore along... – Sectional guide or shaft having means to lock sections in...

Flexible tunneling apparatus and method

Boring or penetrating the earth – With below-ground tool drive prime mover – With below-ground conveyer or impeller for removal of cuttings

Flexpower deep well drill

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

Flightless rock auger for use with pressure drills with...

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

Flightless rock auger for use with pressure drills with...

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

Flightless rock auger with quick attachment and method of use