The radially elongated slots prevent parts having the larger critical dimension from twisting through the slots if such parts are of suitable shape to twist through a shallow aperture. Upon rotation of the drum, the parts having the critical dimension are tumbled and eventually expelled through the slots, whereas parts having a larger critical dimension are unable to fit through the slots.
The drum further has a plurality of radially extending, radially elongated slots which extend from the central chamber. The rotatable drum has a central chamber therein into which the mixture of parts to be separated is placed. The present invention provides a rotary tumbler separator wherein tumbling is accomplished within a rotatable drum.
B07B13/04- Grading or sorting solid materials by dry methods, not otherwise provided for Sorting articles otherwise than by indirectly controlled devices according to size. B07B1/00- Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like. B07B13/006- Sorting molded pieces and runners. B07B13/00- Grading or sorting solid materials by dry methods, not otherwise provided for Sorting articles otherwise than by indirectly controlled devices. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL 
B07B- SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g.B07- SEPARATING SOLIDS FROM SOLIDS SORTING.239000002991 molded plastic Substances 0.000 description 1.206010009839 Coeliac diseases Diseases 0.000 description 1.238000000926 separation method Methods 0.000 description 2.239000003247 radioactive fallout Substances 0.000 description 2.238000000465 moulding Methods 0.000 abstract description 4.
239000000203 mixtures Substances 0.000 abstract description 9. 239000000789 fasteners Substances 0.000 claims description 2. Assignors: W-L MOLDING COMPANY, THE Application granted granted Critical Publication of US4541531A publication Critical patent/US4541531A/en Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links reassignment LAROS EQUIPMENT COMPANY, INC., A CORP. Assigned to LAROS EQUIPMENT COMPANY, INC., A CORP. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by LAROS EQUIPMENT Co filed Critical LAROS EQUIPMENT Co Priority to US06/520,102 priority Critical patent/US4541531A/en Assigned to W-L MOLDING COMPANY, THE reassignment W-L MOLDING COMPANY, THE ASSIGNMENT OF ASSIGNORS INTEREST. Original Assignee LAROS EQUIPMENT Co Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Brule Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US06/520,102 Inventor Paul L. Google Patents US4541531A - Rotary separatorĭownload PDF Info Publication number US4541531A US4541531A US06/520,102 US52010283A US4541531A US 4541531 A US4541531 A US 4541531A US 52010283 A US52010283 A US 52010283A US 4541531 A US4541531 A US 4541531A Authority US United States Prior art keywords channel members radially drum slots Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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