Apparatus for accurate powder metering
Patent 7284574 Issued on October 23, 2007. Estimated Expiration Date: 
October 31, 2023. 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.
October 31, 2023. 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 3078685 Feedback control for automatic filling machine Apparatus for continuous supply of fine powder, viscous fluid or the like at a constant rate Feed device for a continuous feed mixer Measuring and dispensing system for solid dry flowable materials Dry material dispensing apparatus Apparatus for dispensing measured doses of bulk material into containers with narrow openings Patent #: 6354339 InventorsAssigneeApplicationNo. 10533500 filed on 10/31/2003US Classes:141/72, Agitation of head and receiver141/83, WITH TESTING OR WEIGHING RECEIVER CONTENT366/279, Rotatable stirrer53/432, Vacuum or gas treating141/1, PROCESSES222/63, Motor control366/76.3, Screw feeder distinct from agitator141/370Guide or shieldExaminersPrimary: Douglas, Steven O.Attorney, Agent or FirmForeign Patent References
International ClassB65B 1/04AbstractAn apparatus for accurately metering out powder, comprising a container of powder, comprising an adjustable opening through which the powder is dispensed, said opening being in direct communication with the container; adjusting means for adjusting said opening; and a checking means for checking the amount of powder dispensed, in relation with said adjusting means; and a vibrating and/or tapping means for vibrating or tapping the container, wherein the container further comprises a stirrer situated within the interior volume of said container, and wherein said stirrer is arranged along an axis passing through the opening, said stirrer comprising; a first end arranged near the mid-plane of the opening, and a second end at the opposite end to the first end and which is connected to a device transmitting to the stirrer a back-and-forth movement along said axis passing through the opening, and possibly a rotary movement about said axis passing through the opening.Other References
Field of SearchWITH TESTING OR WEIGHING RECEIVER CONTENTWith feeder and additional flow modifier or retarder at foot of fill tube Continuous feeding during filling (e.g., rotary auger) Compacting Agitation of head and receiver For bottom discharge dispenser supported on horizontal surface JARRING AND/OR VIBRATING Single outlet bounded by plural vibrating members Member reciprocable (including oscillatable) transversely of material flow STIRRER WITHIN STATIONARY MIXING CHAMBER Mounted in removable mixing chamber closure Oscillatory stirrer Rotatable stirrer Translatable stirrer Rectilinearly reciprocable only Spring return With additional motion Including rotatable input drive Rotatable stirrer With motor drive With gear drive | |
