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

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

Device for building up directional force

Mining or in situ disintegration of hard material – Processes – Forming blocks

Device for closing off a mine gallery especially for use to prev

Mining or in situ disintegration of hard material – With separation of materials – Separation below surface of earth or water

Device for collecting manganese nodules on the ocean floor

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With material-handling means

Device for cooling cutting teeth of cutter heads of cutting mach

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

Device for cooling the bits of a cutting machine

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

Device for cooling the bits of cutting machine

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

Device for cutting a receptacle in pavement to receive plowable

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

Device for directing the rack

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

Device for enlarging a chimney

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Cleansing fluid passage

Device for feeding fluid for the spraying of picks in a shearing

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With mine roof-supporting means

Device for guying a drift advancing machine within a drift

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Cutter shiftable horizontally

Device for guying a movable cutting machine

Mining or in situ disintegration of hard material – Hard material disintegrating machines – With mine roof-supporting means

Device for guying a movable cutting machine

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

Device for interconnecting two sections of a longwall mining mac

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Cleansing fluid passage

Device for intermittently subjecting axially shiftable bits of a

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

Device for milling ground surfaces, specially roadways

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

Device for milling off ground surfaces especially roadways

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Plural heads moving relative to each other

Device for milling rock and other materials and method for...

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

Device for mining of thick strata of useful minerals