Patent ID: 8800731

Claim:
A centrifugal pendulum ( 1 ) in a torsional vibration damper of a drive train of a motor vehicle with: a pendulum flange ( 2 ) rotatable about a first rotation axis ( 24 ) and including: a first plurality of cutouts; and first and second cutouts separate from the first plurality of cutouts; first and second restrictedly displaceable pendulum masses distributed over a circumference, the first pendulum mass disposed on a first side of the pendulum flange and the second pendulum mass disposed on a second side of the pendulum mass, opposite the first side; third and fourth cutouts in the first pendulum mass; fifth and sixth cutouts in the second pendulum mass; a plurality of connectors, each connector: passing through a respective cutout from the first plurality of cutouts and rigidly connected to the first and second pendulum masses; a first rolling element: passing through the first cutout with respective first and second ends disposed within the third and fifth cutouts and including: a second rotation axis passing through the respective first and second ends of the first rolling element; a first ring board: extending from the first rolling element in a first direction orthogonal to the second rotation axis; located between the pendulum flange and the first pendulum mass in an second direction parallel to the second rotation axis; and, aligned with the first and third cutouts in the second direction; a second ring board: extending from the first rolling element in the first direction; located between the pendulum flange and the second pendulum mass in the second direction; and, aligned with the first and fifth cutouts in the second direction; a first gap, in the second direction, located between the first ring board and the first pendulum mass; a second gap, in the second direction, between the second ring board and the second pendulum mass; and, a second rolling element passing through the second cutout with respective first and second ends disposed within the fourth and sixth cutouts, wherein: the first and second rolling elements are displaceable with respect to the flange and the first and second pendulum masses; a line, in the second direction, passes through the first and second pendulum masses, the first and second gaps, and the pendulum flange; a first limit stop forms, with the first rolling element, a first chamber at least partially filled with hydraulic fluid; second and third limit stops for the third cutout form, with the first rolling element, second and third chambers at least partially filled with hydraulic fluid; and, the first, second, and third chambers are at least partially sealed by the first ring board.