# US 8,739,523 B2 · Rotary vibration damper with centrifugal force pendulum > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,739,523 B2 - Document ID: US8739523B2 - Status: Granted - Kind: B2 - Application number: 12/995,666 - Filed: 2009-05-14 - Published: 2011-07-28 - Granted: 2014-06-03 - Earliest claimed: 2008-06-02 - Assignees: Schaeffler Technologies AG & Co. KG - Applicants: Christian Huegel; Christian Dinger - Inventors: Christian Huegel; Christian Dinger - Web page: https://patentgrep.com/patent/US8739523B2 ## CPC - F16H 45/02: with mechanical clutches for bridging a fluid gearing of the hydrokinetic type (control of torque converter lock-up clutches F16H61/14) - F16F 15/13128: {the damping action being at least partially controlled by centrifugal masses (flywheels characterised by means to vary the moment of inertia F16F15/31)} - F16F 15/145: {Masses mounted with play with respect to driving means thus enabling free movement over a limited range} - F16H 2045/0231: {arranged in series} - F16H 2045/0263: {the damper comprising a pendulum} - Y10T 74/2128: Damping using swinging masses, e.g., pendulum type, etc. - F16H: GEARING - F16F: SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A rotary vibration damper with an input part and an output part having a centrifugal force pendulum disposed on a flange part of the input part or output part, with several mass parts distributed over the circumference of the flange part, and disposed on two sides of the flange part, in raceways of the flange part, and limitedly displaceable in the circumferential direction, and in the radial direction by which two mass parts are interconnected respectively on opposite sides of the flange part. ## Claims ### Claim 1 A rotary vibration damper, comprising: an input part; at least one output part; a centrifugal force pendulum disposed on a flange part of the input part or the at least one output part; and, a plurality of mass parts distributed over the circumference of the flange part and disposed on both sides of the flange part, received in a plurality of raceways of the flange part and limitedly displaceable relative to said plurality of raceways in circumferential direction and in radial direction, of which, two of the plurality of mass parts disposed on opposite sides of the flange part, are connected together, respectively, wherein in the area of the plurality of mass parts, the flange part includes a recess in which an auxiliary mass part, connected respectively with the opposite mass parts, is disposed. ### Claim 2 (depends on 1) The rotary vibration damper recited in claim 1, further comprising energy accumulators in the flange part, wherein the recess is disposed radially outside the energy accumulators. ### Claim 3 (depends on 1) The rotary vibration damper recited in claim 1, wherein the recess is disposed between the plurality of raceways in circumferential direction. ### Claim 4 (depends on 1) The rotary vibration damper recited in claim 1, wherein rotation of the plurality of mass parts against the flange part is restricted by a plurality of limit stops of the auxiliary mass part on the flange part. ### Claim 5 (depends on 1) The rotary vibration damper recited in claim 1, wherein oppositely disposed mass parts and the auxiliary mass part are connected together with a plurality of rivets. ### Claim 6 (depends on 1) The rotary vibration damper recited in claim 1, wherein oppositely disposed mass parts and the auxiliary mass part include an axially aligned cutout. ### Claim 7 (depends on 6) The rotary vibration damper recited in claim 6, wherein the cutout is disposed in the plurality of mass parts between the plurality of rivets and in the plurality of mass parts, and the plurality of raceways is disposed complementarily to the plurality of raceways of the flange part for rolling bodies simultaneously rolling in the plurality of raceways of the flange part and the plurality of mass parts. ### Claim 8 (depends on 6) The rotary vibration damper recited in claim 6, wherein an edge cutout is formed on the outside circumference of auxiliary mass part. ### Claim 9 (depends on 1) The rotary vibration damper recited in claim 1, wherein the flange part is the input part of a second damper stage disposed on an axially adjacent first damper stage. ### Claim 10 (depends on 9) The rotary vibration damper recited in claim 9, wherein the input part or the output part of the first damper stage is formed of two disk parts connected non-rotatably with one another. ### Claim 11 (depends on 10) The rotary vibration damper recited in claim 10, wherein the two disk parts of the input part or the output part are connected with one another by means of the plurality of rivets. ### Claim 12 (depends on 11) The rotary vibration damper recited in claim 11, wherein openings for the plurality of rivets and at least one cutout are aligned to one another. ### Claim 13 (depends on 1) The rotary vibration damper recited in claim 1, comprising a dual mass flywheel, comprising: an input part connected with an internal combustion engine; and, an output part limited against the effect of an energy accumulator, rotatable relative to said output part, transmission-side connected respectively with a primary, input-side mass and a secondary transmission-side mass. ### Claim 14 A hydrodynamic torque converter, comprising: an impeller driven by an internal combustion engine; a turbine wheel driven by said impeller on the output side and arranged to be coupled with a transmission input shaft; and, a rotary vibration damper including: an input part; at least one output part; a centrifugal force pendulum disposed on a flange part of the input part or the at least one output part; and, a plurality of mass parts distributed over the circumference of the flange part and disposed on both sides of the flange part, received in a plurality of raceways of the flange part and limitedly displaceable relative to said plurality of raceways in circumferential direction and in radial direction, of which, two of the plurality of mass parts disposed on opposite sides of the flange part, are connected together, respectively, wherein in the area of the plurality of mass parts, the flange part includes a recess in which an auxiliary mass part, connected respectively with the opposite mass parts, is disposed and wherein the turbine wheel and the rotary vibration damper are coupled with one another. ### Claim 15 (depends on 14) The hydrodynamic torque converter recited in claim 14, wherein the input part of the rotary vibration damper is connected non-rotatably with the turbine wheel. ### Claim 16 (depends on 14) The hydrodynamic torque converter recited in claim 14, wherein the rotary vibration damper includes first and second damper stages, and the flange part of the second damper stage and the output part of the first damper stage are connected non-rotatably with one another. ### Claim 17 (depends on 14) The hydrodynamic torque converter recited in claim 14, further comprising a lock-up clutch, wherein the rotary vibration damper includes a first damper stage, and the input part of the first damper stage is connected non-rotatably with an output part of the lock-up clutch.