AUTOMATIC BALANCE DEVICE Russian patent published in 2007 - IPC F16F15/36 D06F37/20 

FIELD: balancing of unbalanced mass of revolving body.

SUBSTANCE: automatic balance device (50) has chamber (56) with external wall (54) and axle (18), first and second balancing masses (80a, 80b) whose freedom of motion is limited by circular trajectory around axle (18) and inside chamber (56),and viscous fluid (60) kept in chamber (56) for viscous coupling between external wall (54) of chamber (56) and each of balancing masses (80a, 80b) which are so positioned that first balancing mass (80a) leads the second balancing mass (80b). Limiting units (94a, 94b) are so mounted that they prevent the first balancing mass (80a) from leading the second balancing mass (80b) by more than 180° during use of device.

EFFECT: minimization of degree of deviation of revolving body from axis at critical velocity.

35 cl, 15 dwg