Patent ID: 6579002
Filing Date: 2003-06-17
Classification: B01F

Abstract:
A shaker comprising:a frame; a motor, mounted to the frame, with a shaft extending from the motor in each of two opposite directions; two crankshafts, each directly affixed to one directional extension of the shaft at a 180Â° phase difference; two pistons constrained for linearly reciprocating movement, a top region of each piston having an engagement feature engaging and retaining to the piston a jig fixture that holds a sample during reciprocating movement of the piston; and two linkages, each directly connecting one of the two crankshafts to a respective piston; wherein when the motor turns the shaft and also the crankshafts affixed to the shaft then the pistons linearly reciprocate oppositely, one piston being at the apex of its stroke while the other is at the nadir, therein serving to shake any samples that are within any containers that are held within any jig fixtures engaging, and retained upon, the pistons.