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

Boring or penetrating the earth – Below-ground impact members – With releasable means to detachably retain telescoping...

Unitary drill bit and roof bolt

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

Unitized rotary rock bit

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

Unitized seal for severe service applications

Boring or penetrating the earth – Boring without earth removal – Combined with earth removal

Universal drive point device

Boring or penetrating the earth – Processes

Universal joint assembly

Boring or penetrating the earth – Boring with explosion in inaccessible hole – With bore condition firing control – or compensating means

Universal perforating gun firing head

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Unplanar non-axisymmetric inserts

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

Unplanar non-axisymmetric inserts

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

Unsegmented rotary rock bit structure and hydraulic fitting

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

Up-drill sub for use in rotary drilling

Boring or penetrating the earth – With means movable relative to tool below ground to stop... – With longitudinally spaced valve seats

Up-hole overshot and safety drilling apparatus

Boring or penetrating the earth – With means movable relative to tool below ground to stop... – In sample receiver removable through below-ground tool shaft

Up-hole pump-in core barrel apparatus

Boring or penetrating the earth – Enlargement of existing pilot throughbore requiring...

Uphole hammer

Boring or penetrating the earth – Automatic control – Of advance or applied tool weight

Use of axial accelerometer for estimation of instantaneous...

Boring or penetrating the earth – Processes – Boring with specific fluid

Use of cuttings tank for slurrification on drilling rig

Boring or penetrating the earth – Processes – Boring curved or redirected bores

Using a rotating inner member to drive a tool in a hollow...

Boring or penetrating the earth – Processes – Boring curved or redirected bores

Using a rotating inner member to drive a tool in a hollow...

Boring or penetrating the earth – Processes – Boring curved or redirected bores

Using a rotating inner member to drive a tool in a hollow...

Boring or penetrating the earth – Processes – Boring curved or redirected bores

Using a rotating inner member to drive a tool in a hollow...