US 4,487,509 · Granted 1984-12-11

Portable blender

A blender for blending materials having a container with a container opening extending a distance therethrough and intersecting the upper end thereof, a cap removably connectable to the open upper end of the container, a mixer connected to the cap for blending the material and a drive assembly having a portion adapted to receive the cap with the container connected thereto and another portion removably engageable with the mixer for driving the mixer to blend the material contained in the container. The drive assembly is adapted to be battery operated and the blender of the present invention includes a recharger for recharging the blender batteries. The blender includes a switch for establishing electrical continuity between the DC motor of the drive assembly and the blender batteries, and the switch is positioned and actuated in such a manner that the cap with the container connected thereto virtually must be positioned so the mixer is connected to the drive assembly before the drive assembly is conditioned in the driving condition.

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