초록 ▼

An inertia force generating device comprises two pairs of coaxial counterrotating eccentric rotors, whose rotational speeds and relative positons are automatically and continuously controlled so as to cancel undesirable vibrations produced by another device. Within each rotor pair, the two rotors ha

An inertia force generating device comprises two pairs of coaxial counterrotating eccentric rotors, whose rotational speeds and relative positons are automatically and continuously controlled so as to cancel undesirable vibrations produced by another device. Within each rotor pair, the two rotors have an adjustable angle between their mass centers, so that the effective eccentricity of the pair can be varied, and the phase between the two pairs can also be changed, to alter the direction of the maximum or minimum inertial forces developed. The four rotors include shells of different diameter, nested together on a center plane of the device, or parallel plates configured to maintain a minimum spread of mass centers along the rotational axis.

대표청구항 ▼

An inertial force generating device for producing periodic forces to cancel undesired vibrations, comprising: a stationary housing; first and second pairs of eccentric rotors disposed within said housing for rotation around an axis common to all of said rotors, each rotor having an imbalanced portio

An inertial force generating device for producing periodic forces to cancel undesired vibrations, comprising: a stationary housing; first and second pairs of eccentric rotors disposed within said housing for rotation around an axis common to all of said rotors, each rotor having an imbalanced portion with a respective eccentric center of mass, said imbalanced portions being nested radially, so as to develop force vectors in a common plane perpendicular to said axis; means for rotating said rotor pairs in opposite directions; means for controlling the angle between the mass centers of the rotors within each rotor pair, so as to vary an effective mass eccentricity of each; and means for adjusting the phase angle between the rotor pairs so as to control the direction of the cancelling force generated by the device.