Vibration dampening apparatus for motor actuated eccentric forces

Claim 1

A vibration dampening apparatus for rotating at least one eccentric weight carried on and by a shaft isolated from transmitting said vibrations to a motor rotating said shaft, the dampening apparatus including: (a) an independent housing within a cavity of which at least one eccentric weight is moved and rotated; (b) a support shaft rotatably carried within and by said independent housing; (c) at least one eccentric weight secured to said shaft and rotated as the support shaft is rotated; (d) at least one bearing means carrying said shaft and mountable in an end portion of the housing means, said housing means sized so as to accommodate the forces of vibration from the eccentric weight to said shaft as the shaft is rotated; (e) a first coupling half mounted and secured to one end of said support shaft and having a plurality of spaced pin means secured thereto and therein, said pin means protruding from a surface substantially normal to the axis of said shaft, said pin means extending in a direction away from said eccentric weight; (f) a resilient central portion of the coupling and having means to slidably retain said pin means provided in the first coupling half, and in mounted condition on the pin means to be arranged substantially adjacent the first coupling half; (g) a second coupling half mounted on and secured to an output shaft of a motor, said second coupling half having a plurality of spaced pin means secured thereto and therein, said pin means protruding from a surface substantially parallel to the surface in the first coupling half, said pin means extending in a direction towards said first coupling half and disposed to enter additional means provided in said resilient central portion, the pin means in the first and second coupling halves intermeshed in retaining means in the central portion so as to transmit the torque from the motor to said coupling halves with the resilient central portion isolating the vibrations from the rotation of the eccentric weight and preventing transmittal of said vibrations to the motor shaft; (h) said motor positioned adjacent to said independent housing and with vibrations from the rotation of the eccentric weight through and from the independent housing to a housing of the motor being isolated and dampened by a first plurality of resilient washer means carried in and by an isolation disk and said housing is secured through said first resilient washer means to the independent housing by securing means and with this isolation disk further isolated and dampened by another and second multiplicity of resilient washer means carried by a motor mount disk and with said motor mount disk secured to the isolation disk through said second resilient washer means by securing means, and (i) means for securing a frame of said motor to the motor mount disk.