Method and apparatus for treating particulate material
Patent 4730627 Issued on March 15, 1988. Estimated Expiration Date: 
November 28, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 28, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3419015 Method and apparatus for conditioning tobacco Patent #: 4054145 InventorsAssigneeApplicationNo. 06/936050 filed on 11/28/1986US Classes:131/305, Within rotary drum-type apparatus131/302, Including means to circulate fluid131/306, Including means to convey tobacco131/309Other than water, steam, or airExaminersPrimary: Millin, V.Attorney, Agent or FirmInternational ClassesA24B 3/12 (20060101)A24B 3/00 (20060101) A24B 3/04 (20060101) B01F 15/00 (20060101) B01F 9/00 (20060101) B01F 9/06 (20060101) AbstractAn improved method and apparatus for treating particulate material with a liquid additive in a rotatable cylinder involves the use of a pressurized fluid such as steam directed obliquely against the inner wall of the cylinder to effect a cleaning action on the inner wall as the cylinder is rotated and to augment agitation action produced by the rotational movement of the cylinder and gravitational forces acting on the particulate material. Strategically located spray nozzles apply controlled amounts of liquid additive to the particulate material as it is undergoing agitation by the combined effects of the applied forces. The method and apparatus disclosed are particularly suited to the treatment of tobacco with casing materials. | |
