Centrifugal-effect vibration generator having coaxial contrarotating rotors
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United States of America Patent
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Jun 30, 2009
Grant Date -
Nov 30, 2006
app pub date -
May 24, 2006
filing date -
May 25, 2005
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Abstract
A device for generating forces that are variable and controllable in amplitude, in direction, and in frequency, the device includes two unbalanced rotors (18, 20, 35 to 38) mounted coaxially in a casing (11). The device further includes electromagnetic drive elements for driving a first of the two rotors in rotation relative to the second of the two rotors, and brake elements (43 to 45) for braking the second rotor (20, 36, 38) relative to the casing.
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