Measuring and testing – Vibration – Vibrator
Reexamination Certificate
2006-07-04
2006-07-04
Chapman, John E. (Department: 2856)
Measuring and testing
Vibration
Vibrator
C297S217300
Reexamination Certificate
active
07069787
ABSTRACT:
An electrodynamic shaker apparatus is disclosed for providing shaking and/or vibrational motion. The shaker includes armature and stator assemblies as well as a distributed spring assembly. The shaker apparatus of the present invention is robust, supports increased off-center loads, and has a low profile such that it may be easily placed under an item of furniture in order to impart vibrational motion in response to electrical signals from a variety of sources.
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