US Patent 8439600 Portable vibratory concrete float

A vibratory device for use with a concrete finishing tool having a float pad is disclosed. The vibratory device has a mounting plate, a housing attached to the mounting plate, a motor, and a power source. The mounting plate is attached to a top side of the float pad. The housing is attached to said mounting plate. The motor is positioned in the housing and is operatively attached to the mounting plate. The power source is positioned in the housing and is in communication with the motor. Optionally, a counterweight is positioned in the housing and is attached to the motor. The actuation of the motor causes the mounting plate and the float pad to vibrate.