Abstract: An apparatus for shaking containers holding samples is disclosed having a motor with a rotatable shaft defining a shaft axis. A rotor is coupled to and rotatable with the shaft, and at least three cam assemblies are coupled to and rotatable with the rotor. Each cam assembly includes a cam defining a support surface, and the at least three cam assemblies are oriented so that the support surfaces define a rotating plane disposed at an oblique angle with respect to the shaft axis during rotation of the cam assemblies. A socket is supported in a fixed position with respect to the rotor, and a ball is retained by and pivotable within the socket. A loading plate adapted to hold the samples is coupled to the ball to allow pivotable movement of the loading plate with respect to the rotor, the loading plate having a drive surface engaging the cam support surfaces. An anti-rotation mechanism engages the loading plate.

Abstract: A gyroscopic mixer is disclosed which features a direct drive connection to a motor and a clamping mechanism which enables the mixer to accommodate containers of various sizes and configurations. The motor is connected to a drive shaft which is connected to a first bracket. The motor imparts rotation to the bracket about a first axis. An annular gear and single pulley belt is utilized to impart rotation about a second axis that is substantially perpendicular to the first axis for a gyroscopic mixing motion.