LandOfFree - US Patents - Listing for Mining or in situ disintegration of hard material

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Rotary cutter head with advance direction coincident or...

Pitch seam mining

Mining or in situ disintegration of hard material – Tunnel recovery of fluid material

Placement of explosive for forming in situ oil shale retort

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working

Planer with edge planing capability

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working

Planing apparatus with bridging cutters

Mining or in situ disintegration of hard material – Automatic control; signaling or indicating – Of hard material disintegrating machine

Planing device and method for activating a planning device

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable

Planing machine for the mining of minerals

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable

Planing machine for underground mining with a cutter in the tran

Mining or in situ disintegration of hard material – Processes – Directly applying heat or vibration

Plasma blasting method

Mining or in situ disintegration of hard material – Processes – Directly applying heat or vibration

Plasma blasting probe assembly

Mining or in situ disintegration of hard material – Processes – Directly applying heat or vibration

Plasma blasting with coaxial electrodes

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable

Plough for underground mining

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable

Plough for winning material from a mineral face

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means

Plough mining installation

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working

Plough transmission

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable

Plow baseplate

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter attached to endless chain or cable

Plow cutter assembly

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Floor-working

Plunger-actuated surface-treating devices

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Sidewall-working

Plural spaced cutter drums on pivotable elongate arm with loadin

Mining or in situ disintegration of hard material – Expansible breaking-down devices – Fluid-pressed element

Pneumatic blasting device