Agitating – Stirrer within stationary mixing chamber – Mounted in removable mixing chamber closure
Patent
1996-07-17
1997-10-14
Cooley, Charles E.
Agitating
Stirrer within stationary mixing chamber
Mounted in removable mixing chamber closure
366331, 366605, B01F 732
Patent
active
056764634
ABSTRACT:
A paint mixing system includes a paint can lid having a mixing paddle that can be rotated by a power drill or the like. The paint mixing system is preferably constructed entirely of plastic (e.g. molded high density polyethylene), except for a self-lubricating washer. The paint mixing system includes a plastic lid having an integral bore, a coupler that is secured for rotation within the lid bore, and a mixing paddle attached to the coupler below the lid. The coupler has a cylindrical upper portion and a cylindrical lower portion that has a smaller diameter than the upper portion. Likewise, the integral bore has a cylindrical upper portion that is larger than a lower cylindrical portion. The coupler fits closely within the lid bore, but not snugly so that the coupler can rotate freely within the bore. The self-lubricating washer, preferably a synthetic petroleum based self-lubricating washer, is provided at an interface between the coupler and the bore to facilitate rotation of the coupler within the bore without creating excessive frictional heat that could otherwise compromise the integrity of the system when the coupler is rotated at fast speeds over a long period of time. A drive element for the coupler is detachable from the coupler. Preferably, the lid includes an integral drive element holder to store the drive element when it is not engaged in the coupler. The system also includes a mixing paddle configuration that facilitates effective mixing of paint at the bottom of the paint can together with the remainder of the paint in the can.
REFERENCES:
patent: 2123600 (1938-07-01), Galante
patent: 2579874 (1951-12-01), Shaw
patent: 2898094 (1959-08-01), O'Neill, Jr.
patent: 3704007 (1972-11-01), Kroeger
patent: 4422770 (1983-12-01), Geible
patent: 5094543 (1992-03-01), Murzsa
patent: 5199788 (1993-04-01), Stallings
patent: 5251979 (1993-10-01), Larsen
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