Pneumatic cleaning system
Patent 4411038 Issued on October 25, 1983. Estimated Expiration Date: 
November 16, 2001. 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 16, 2001. 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 2275849 2666711 3096532 3398423 3805316 3909873 Cleaning and dust removal machine Patent #: 4198725 InventorApplicationNo. 06/321682 filed on 11/16/1981US Classes:15/3.13, Work moved through apparatus15/308, With work agitator, e.g., brushing, beating, shaking15/309.2, Plurality of discrete articles15/346, Closed circuit systems, i.e., air recirculating209/466Constant currentExaminersPrimary: Moore, Chris K.Attorney, Agent or FirmInternational ClassesB07B 9/02 (20060101)B07B 4/00 (20060101) B07B 9/00 (20060101) B03B 4/02 (20060101) B03B 4/00 (20060101) B07B 4/08 (20060101) AbstractA pneumatic cleaning system for particulate bulk material such as raisins, seeds, nuts, and the like, the system having a reciprocating screen onto which the material is delivered in a layer for travel across the screen; a top hood and a bottom hood mounted in substantially air-tight relation on the screen; an air cleaner; a blower having an intake and an exhaust, and conduits connecting the exhaust, the bottom hood, the intake, and the cleaner in closed circuit, series relation to pass air upwardly through the layer at the screen. | |
