US 7,549,927 B2
Tunable damper for a torque transferring assembly
Yohannes Haile, Canton, Mich. (US); Michael W. Hopson, Clinton Township, Mich. (US); Niaz A. Khwaja, Livonia, Mich. (US); Trenton S. Meehan, Ann Arbor, Mich. (US); and Rand Sutherland Schenck, Saint Joseph, Mich. (US)
Assigned to Automotive Components Holdings, LLC, Dearborn, Mich. (US)
Filed on Sep. 25, 2006, as Appl. No. 11/527,051.
Prior Publication US 2008/0076586 A1, Mar. 27, 2008
Int. Cl. F16F 7/104 (2006.01)
U.S. Cl. 464—180  [181/207] 14 Claims
OG exemplary drawing
 
1. A tunable damper for a torque transferring assembly having a tubular shaft including an inner surface defining an elongated cavity, the damper being cylindrical in shape and comprising:
an input channeling portion and an output channeling portion, each channeling portion formed from a first predetermined foam material having a first density and a diameter sufficient for providing a resilient bias force against the inner surface of the tubular shaft; and
at least one absorber formed from a second predetermined foam material having a second density different from the first predetermined foam material and first density, respectively, the at least one absorber positioned between the input and output channeling portions for attenuating a first predetermined range of frequencies of noise produced or transmitted by the torque transferring assembly, wherein the diameter of the input and output channeling portions is larger than a diameter of the at least one absorber.