Patent Assignee: Dravo Corporation
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Lime slaker
Inventor: Underwood | Patent Number: 4779992
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Integrated dust containment system for rotary crusher/breakers and the like
Inventor: Binzen | Patent Number: 4760968
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Dust containment system for bulk cargo containers
Inventor: Binzen, et al. | Patent Number: 4714097
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Dust control in hoppers
Inventor: Binzen | Patent Number: 4699187
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Process of thermally treating lump or agglomerated materials on a travelling grate
Inventor: Kilian | Patent Number: 4689007
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Circular solvent extractor
Inventor: Oyler, et al. | Patent Number: 4683029
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Rotary car dumper with lump breaker apparatus
Inventor: Binzen, et al. | Patent Number: 4655401
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Removal of SO.sub.2 from SO.sub.2 -containing gases
Inventor: College, et al. | Patent Number: 4626418
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Rotary car dumper with dust collection system
Inventor: Binzen | Patent Number: 4609321
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Process for separating dimethyl ether from a hydrocarbon mixture containing the same
Inventor: Colaianne, et al. | Patent Number: 4603225
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Circular traveling grate machine
Inventor: Coulter | Patent Number: 4575055
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Accelerating slugs of liquid
Inventor: Pater, et al. | Patent Number: 4573637
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Pallet construction for traveling grate machines
Inventor: Coulter | Patent Number: 4572484
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Process and apparatus for separating fines from micella streams
Inventor: Gessler | Patent Number: 4563273
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Method for treatment of tar-bearing fuel gas
Inventor: Frauen, et al. | Patent Number: 4563195
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Tethered vehicle for moving bulk material
Inventor: Briggs | Patent Number: 4548315
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Train holding apparatus with means for relieving the load imposed thereon during disengagement
Inventor: Manning, Jr., et al. | Patent Number: 4512260
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Self training belt conveyor with digging elements
Inventor: Briggs | Patent Number: 4506781
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Apparatus for removing the liquid phase from a slurry of fine granular material
Inventor: Fenton, Jr., et al. | Patent Number: 4501539
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Process for recovering heat from the combustion of residual carbon in oil depleted shale
Inventor: Jaquay, et al. | Patent Number: 4490237
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Method for random car train positioning
Inventor: Cornish, et al. | Patent Number: 4487547
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Pokehole system for fixed bed gasifier and pokehole unit
Inventor: Campbell | Patent Number: 4479808
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Rotary car dumper installation with integral dust collection
Inventor: Binzen | Patent Number: 4479749
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Method of and apparatus for the mixing and processing of fragile material and fragmentel solids
Inventor: Forbes | Patent Number: 4475987
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Process for solvent extraction of bitumen from oil sand
Inventor: Karnofsky | Patent Number: 4448667
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Apparatus for clamping a railroad car in a rotary car dumper
Inventor: Muhoray | Patent Number: 4444539
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Heating process gas for indirect shale oil retorting through the combustion of residual carbon in oil depleted shale
Inventor: Jaquay, et al. | Patent Number: 4439307
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Process for heating recycle gas in oil shale retorting
Inventor: Jaquay, et al. | Patent Number: 4436611
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Method of and apparatus for processing of oil shale
Inventor: Kestner, Jr. | Patent Number: 4425220
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Apparatus for the continuous solvent extraction of bitumen from oil-bearing sand
Inventor: Karnofsky | Patent Number: 4422901
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Process for dewatering fine granular materials
Inventor: Coate, et al. | Patent Number: 4420404
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Adjustable wheel assembly in a rotary solvent extractor
Inventor: Gessler | Patent Number: 4412976
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Yellowcake (U.sub.3 O.sub.8) dust, water and heat recovery process and apparatus
Inventor: Sousek | Patent Number: 4409740
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Circular traveling grate machine for process requiring minimum gas leakage
Inventor: Oyler | Patent Number: 4408987
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Quick roll adjustment for a roller screen conveyor
Inventor: Fenton, Jr., et al. | Patent Number: 4405050
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Method for the flash oxidation of metal concentrates
Inventor: Jaquay | Patent Number: 4389243
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Coke spillage removal device
Inventor: Blair, et al. | Patent Number: 4388153
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Method of and apparatus for the mixing and processing of fragile material and fragmented solids
Inventor: Forbes | Patent Number: 4381989
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Fine particulate removal from oil shale on a travelling grate retort
Inventor: Kestner, Jr., et al. | Patent Number: 4381988
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Automatic rail clamp
Inventor: Briggs | Patent Number: 4377220
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Fluid manifold assembly for solvent extractor
Inventor: Gessler | Patent Number: 4376052
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Process of heat-treating pellets
Inventor: Kilian | Patent Number: 4373946
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Basket with swing away double locking handle
Inventor: Pfeifer | Patent Number: 4365725
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Hammerhead crane with plural shuttle trolleys, a load trolley and movable counterweight means
Inventor: Blair, et al. | Patent Number: 4363411
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Process for extracting oleaginous seed materials particularly cottonseed with aqueous alcohol
Inventor: Karnofsky, et al. | Patent Number: 4359417
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Train positioner
Inventor: Cornish | Patent Number: 4354792
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Heavy duty belt conveyor
Inventor: Fenton, Jr., et al. | Patent Number: 4351431
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Waste heat recovery apparatus
Inventor: Bruhn, et al. | Patent Number: 4340207
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Sieving roller conveyor for green pellets
Inventor: Leonhardt | Patent Number: 4316543
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Coal stacking tower dust control system
Inventor: Thompson, et al. | Patent Number: 4306895
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Apparatus for removing micronized coal from steam
Inventor: Vlnaty | Patent Number: 4305738
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Process for rectification of miscella from extraction of oleaginous seeds
Inventor: Karnofsky, et al. | Patent Number: 4288297
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Method of recovering heat from hot granular solids
Inventor: Karnofsky, et al. | Patent Number: 4276021
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Method for improving bed firing characteristics and inhibiting coalescence of coal pellets
Inventor: Ban, et al. | Patent Number: 4274836
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Method of process off-gas control
Inventor: Phillips, Jr., et al. | Patent Number: 4273312
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Turret type, single spot coke oven door machine and guide
Inventor: Lakin, et al. | Patent Number: 4270982
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Continuous ship unloader
Inventor: Stellfox, et al. | Patent Number: 4268204
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Bulk material unloader
Inventor: Naruns, et al. | Patent Number: 4265579
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Traveling grate stoker for the combustion of difficultly ignited fuels
Inventor: Ban | Patent Number: 4263857
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Pelletized fixed sulfur fuel
Inventor: Ban, et al. | Patent Number: 4259085
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Method of controlling series fans driving a variable load
Inventor: Phillips, Jr., et al. | Patent Number: 4255089
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Ignition hood with swirl combustion chamber
Inventor: Pobuda, et al. | Patent Number: 4251062
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Apparatus for the flash oxidation of metal concentrates
Inventor: Jaquay | Patent Number: 4249722
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Process for micronizing of solid carbonaceous matter and preparation of carbon-oil mixtures
Inventor: Vlnaty | Patent Number: 4244528
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Sealing device for sinter cooler
Inventor: Schneider | Patent Number: 4238120
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Dry stacker and reclaimer
Inventor: Cheek | Patent Number: 4231467
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Method and apparatus for removing micronized coal from steam
Inventor: Vlnaty | Patent Number: 4227892
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Reclamation of molybdenum or other heavy metals from wastewater treatment skimmings
Inventor: Ramirez | Patent Number: 4222872
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Recovery of asphalt shingle components by solvent extraction
Inventor: Good, deceased, et al. | Patent Number: 4222851
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Horizontal extractor
Inventor: Saxon | Patent Number: 4221764
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Sinter breaker
Inventor: Schymura, et al. | Patent Number: 4221341
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Process for preparing a protein concentrate and the product obtained thereby
Inventor: Karnofsky | Patent Number: 4219470
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Wastewater flotation utilizing streaming potential adjustment
Inventor: Ramirez | Patent Number: 4219417
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Process for recovering molybdenum and tungsten from mining wastewater
Inventor: Ramirez, et al. | Patent Number: 4219416
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Conveying apparatus
Inventor: Briggs | Patent Number: 4217981
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Two stage wastewater flotation
Inventor: Clemens | Patent Number: 4214987
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Hinged load dumping door for multi-cell extractors
Inventor: Saxon | Patent Number: 4211752
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Autogenous process for conversion of metal sulfide concentrates
Inventor: Jaquay | Patent Number: 4199352
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Sintering with exhaust gas pipes
Inventor: Wacker, et al. | Patent Number: 4194729
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Apparatus for recovering lead from battery mud
Inventor: Jaquay | Patent Number: 4180251
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Apparatus for the treatment of wastewater
Inventor: Savage, et al. | Patent Number: 4179374
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Melting of fine particulate material in a high-speed rotary furnace
Inventor: Jaquay | Patent Number: 4175732
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Sintering process for iron ore mixtures
Inventor: Cappel, et al. | Patent Number: 4168154
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Lime scrubbing process for sulfur dioxide removal from gases
Inventor: Selmeczi | Patent Number: 4164549
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Process for converting non-ferrous metal sulfides
Inventor: Jaquay | Patent Number: 4155749
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Process for preparing a flour and the product obtained thereby
Inventor: Karnofsky | Patent Number: 4144229
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Method for agglomerating finely divided agglomerative materials in a rotary drum assembly
Inventor: Jaquay | Patent Number: 4133718
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Round cooler for hot bulk material
Inventor: Moller, et al. | Patent Number: 4126411
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Apparatus for solvent extraction
Inventor: Saxon | Patent Number: 4125379
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Rotary scraper in a rotary drum assembly
Inventor: Pietrusza, et al. | Patent Number: 4113413
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Method for recovering lead from battery mud
Inventor: Jaquay | Patent Number: 4102676
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Melting of fine particulate material in a high-speed rotary furnace
Inventor: Jaquay | Patent Number: 4094667
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Seal arrangement for a rotary drum assembly
Inventor: Harig, et al. | Patent Number: 4087334
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Drive assembly for the rotor of a solvent extractor
Inventor: Saxon | Patent Number: 4086821
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Pivot arrangement for a rotary drum assembly
Inventor: Kent, et al. | Patent Number: 4082489
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Apparatus for measuring the distance to the floor of the cargo hold of a ship through intervening bulk material
Inventor: Harpster | Patent Number: 4070625
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Sintering process
Inventor: Cappel | Patent Number: 4067727
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Sinter machine control as a function of waste gas temperature
Inventor: Cappel, et al. | Patent Number: 4065295
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Filter bottom
Inventor: Heaney, et al. | Patent Number: 4064050
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Bulk material dislodging and gathering apparatus
Inventor: Briggs | Patent Number: 4058203