US 11,898,617 B2
Powertrain interface module
Shaun Mepham, Clarkston, MI (US)
Assigned to Allison Transmission, Inc., Indianapolis, IN (US)
Filed by Allison Transmission, Inc., Indianapolis, IN (US)
Filed on Sep. 13, 2022, as Appl. No. 17/943,731.
Application 17/943,731 is a continuation of application No. 16/763,858, granted, now 11,441,639, issued on Sep. 13, 2022, previously published as PCT/US2018/061047, filed on Nov. 14, 2018.
Claims priority of provisional application 62/585,875, filed on Nov. 14, 2017.
Prior Publication US 2023/0003279 A1, Jan. 5, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F16D 43/21 (2006.01); F16F 15/129 (2006.01); F16D 7/02 (2006.01)
CPC F16F 15/1295 (2013.01) [F16D 7/027 (2013.01); F16D 43/216 (2013.01); F16F 15/1297 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A torsional damper assembly for use in a vehicle powertrain, the torsional damper assembly comprising:
an input-side damper body rotatable about a rotational axis and having a first ramp arrangement, wherein the first ramp arrangement includes a plurality of input lobes and a plurality of input valleys, wherein each input valley is defined between a corresponding pair of the input lobes;
an output-side damper body rotatable about the rotational axis and coupled to an output shaft that extends along the rotational axis, the output-side damper body having a second ramp arrangement that includes a plurality of output lobes and a plurality of output valleys, wherein each output valley is defined between a corresponding pair of the output lobes; and
an overload clutch arranged axially around at least a portion of the output-side damper body;
wherein the output-side damper body is configured to move axially along the rotational axis between (i) a first engagement position at which a crest of each input lobe of the first ramp arrangement is fully received in a corresponding output valley of the second ramp arrangement and a crest of each output lobe of the second ramp arrangement is fully received in a corresponding input valley of the first ramp arrangement and (ii) a second engagement position at which the crest of each input lobe of the first ramp arrangement is only partially received in the corresponding output valley of the second ramp arrangement and the crest of each output lobe of the second ramp arrangement is only partially received in the corresponding input valley of the first ramp arrangement.