| Patents for B07B 1 - Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like (18,540) |
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| 09/19/1989 | US4867866 Municipal waste processing apparatus |
| 09/19/1989 | CA1259465A1 Process for the manufacture of screen components of various lengths for system screening decks and screen component |
| 09/13/1989 | EP0332195A2 Drum separator |
| 09/08/1989 | WO1989007989A1 Method and apparatus for screening granular material |
| 09/06/1989 | EP0330846A2 Plansifter |
| 09/06/1989 | CN2043897U Handcar-type separate sand machine with osillating screen |
| 09/05/1989 | US4863589 Elongated member and cover for use with sizing screen |
| 08/29/1989 | US4861463 Vibratory screening machine |
| 08/29/1989 | US4861462 Method of forming sieve unit for screening machine |
| 08/29/1989 | US4861461 Pipeline padding machine and method |
| 08/23/1989 | CN2043138U Automatic vibrating-screening machine |
| 08/23/1989 | CN2043135U Beaded agarose gel screening grader |
| 08/17/1989 | DE3803804A1 Method for comminuting ceramic catalyst bodies, in particular from motor vehicle exhaust systems |
| 08/16/1989 | EP0328067A2 Machine and method for sorting out fines and over-thick wood chips |
| 08/16/1989 | EP0327564A1 Vertical screening device. |
| 08/16/1989 | CN2042755U Movable raw coal grader |
| 08/16/1989 | CN2042754U Octagonal screening machine |
| 08/15/1989 | US4857180 Rotating disc screen |
| 08/15/1989 | US4857176 Reinforced molded polyurethane vibratory screen |
| 08/15/1989 | US4856171 Method for applying a fabric material to a frame |
| 08/15/1989 | CA1258451A1 Device for driving a body that performs a tumbling and rotating movement |
| 08/09/1989 | CN2042380U Low-noise plane circular screening machine |
| 08/08/1989 | US4855039 Vibrating screen |
| 08/02/1989 | CN2041980U Complex-frequency rotary vibration sieve |
| 07/27/1989 | WO1989006572A1 Nozzle for screen apparatus |
| 07/26/1989 | EP0325554A2 Automatic chip classifier and system |
| 07/26/1989 | EP0325253A2 Drum screen |
| 07/26/1989 | CN2041595U Slot vibration sieve |
| 07/26/1989 | CN2041594U Portable efficiency vibration sieve |
| 07/26/1989 | CN2041593U Spiral screening machine |
| 07/25/1989 | CA1257849A1 Screening apparatus for fiber suspensions |
| 07/19/1989 | CN2041212U Dual-purpose screening machine for chinese chestnut |
| 07/19/1989 | CN1033951A Combined screening and crushing machine for clinkered garbage |
| 07/18/1989 | US4848607 Classifier |
| 07/11/1989 | US4846971 Sieves for scrubbers and their method of manufacture |
| 07/11/1989 | US4846352 Screen clamp |
| 07/11/1989 | US4846282 Machine to restore railway road beds with a continuous endless-conveyor riddle |
| 06/29/1989 | DE3827256C1 Feed drum for a cutting-off unit |
| 06/28/1989 | CN2040139U Mud heavy-making agent an vibrating screen for recovering mud liquid |
| 06/28/1989 | CN2040008U Dual-direction half-spiral vibrating fine screen |
| 06/27/1989 | US4842722 Pressure sorter |
| 06/27/1989 | CA1256273A1 Device and method for the production or release and separation of substances or particulate products of fluid, plastic or solid materials and use of the device |
| 06/21/1989 | CN2039601U 静态振动筛 Static shaker |
| 06/21/1989 | CN2039600U Taper vibration fine sieve |
| 06/20/1989 | US4840728 Vibrating screening apparatus |
| 06/20/1989 | US4840727 Double bank grain cleaner and aspirator therefor |
| 06/15/1989 | WO1989005200A1 Self-cleaning screening device |
| 06/13/1989 | US4839036 Vibratory screening machine |
| 06/13/1989 | US4839035 Cylindrical screen separator with spirally arranged clearing and conveying blades |
| 06/13/1989 | CA1255631A2 Shaker screen |
| 06/06/1989 | US4836915 High flow capacity barrier type screening apparatus |
| 06/06/1989 | US4836388 Apparatus for separating material by length |
| 06/06/1989 | US4836385 Vibratory screening machine |
| 06/01/1989 | WO1989004803A1 Device for feeding and dosing bulk material |
| 05/31/1989 | CN2038542U Device for prolonging service life of vibration sieve screen |
| 05/24/1989 | EP0316614A1 Basket-frame unit for continuous endless-conveyor riddle |
| 05/24/1989 | EP0316570A2 Screen drum and method of manufacturing same |
| 05/24/1989 | EP0316461A1 Vibratory screen |
| 05/24/1989 | EP0316328A1 Improved screen construction |
| 05/24/1989 | DE3738746A1 Sieve basket and method for its production |
| 05/24/1989 | CN2038099U Screw separating conveyor |
| 05/23/1989 | US4832834 Elastomer sieve screen |
| 05/10/1989 | EP0314853A1 Self-propelled machine for separating solid or fibrous deposits from sands and the like, specifically designed for cleaning beach sands |
| 05/10/1989 | CN2037427U Automatic coal-feeding device for boiler |
| 05/09/1989 | US4828690 Hand tool for sifting debris from sand and soil |
| 05/03/1989 | CN2036870U Protector for running of square screen |
| 05/02/1989 | US4826017 Vibrating screen |
| 04/26/1989 | CN2036453U Low-noise vibration screen |
| 04/25/1989 | US4824559 Rotary air separator |
| 04/20/1989 | DE3803621C1 Method for coating metallic conveying surfaces in vibrating conveyors or vibrating screens |
| 04/19/1989 | CN2036068U Moveable multiple purpose drum-type sieve |
| 04/18/1989 | CA1252757A1 Apparatus and a method for separating one solid component from another solid component in suspension in a liquid |
| 04/12/1989 | CN2035660U Vertical pressing structure for screen |
| 04/11/1989 | US4820407 Solids screens |
| 04/11/1989 | US4819810 Screening machine with floating eccentric shaft |
| 04/11/1989 | US4819809 Reinforced polyurethane vibratory screen |
| 04/11/1989 | CA1252424A1 Five stage internal cell separator |
| 04/05/1989 | EP0310009A2 Hand screen, particularly a flour screen |
| 04/05/1989 | CN2035279U Multi-action inertia resonant probability screen |
| 04/05/1989 | CN2035278U Strong-power screen selector |
| 04/04/1989 | US4818379 Screening apparatus with integrated distributing and segregating device |
| 03/29/1989 | CN2034873U Electromagnetic rotational flow vibration sifter |
| 03/28/1989 | US4816153 Frame member for pressurized screening device |
| 03/28/1989 | US4816144 Sieving apparatus |
| 03/28/1989 | CA1251741A1 Rotary screen |
| 03/23/1989 | WO1989002311A1 Device for handling goods |
| 03/22/1989 | CN2034479U Heavy probability screening |
| 03/21/1989 | US4814071 Flexible connector for screening machine |
| 03/16/1989 | DE3816214A1 Drehsieb Rotary screen |
| 03/16/1989 | DE3800816C1 Compost screening machine |
| 03/15/1989 | CN2034091U Takeup device for round shaking screen mesh |
| 03/14/1989 | US4812229 With spaced depressions having angled slits in base; for screening fiber suspensions in paper making |
| 03/14/1989 | US4811918 Method and apparatus for installing continuous lengths of material |
| 03/14/1989 | CA1251169A1 Strain cage for gravity flow system |
| 03/09/1989 | WO1989001816A1 Water clarification system adapted for removing particulate matter of greater than a predetermined size |
| 03/07/1989 | US4810372 Dry material separator |
| 03/07/1989 | US4809791 Removal of rock cuttings while drilling utilizing an automatically adjustable shaker system |
| 03/01/1989 | CN2033304U Flexible sieve |
| 03/01/1989 | CN2033298U Combination high-frequency vibration sieve for dry or wet material |
| 02/28/1989 | US4807487 Mass-compensation oscillating drive for oscillatory machines |