US 11,713,810 B2
Systems and methods for configuring selective couplers in a multi-speed transmission
Isaac Mock, Martinsville, IN (US); Jason Ellis, Clayton, IN (US); and James Raszkowski, Indianapolis, IN (US)
Assigned to Allison Transmission, Inc., Indianapolis, IN (US)
Filed by Allison Transmission, Inc., Indianapolis, IN (US)
Filed on Feb. 3, 2021, as Appl. No. 17/166,427.
Prior Publication US 2022/0243812 A1, Aug. 4, 2022
Int. Cl. F16D 25/02 (2006.01); F16H 63/48 (2006.01); F16H 63/34 (2006.01); F16H 61/02 (2006.01); B60T 1/00 (2006.01); F16D 48/02 (2006.01)
CPC F16H 63/3483 (2013.01) [F16D 25/02 (2013.01); F16H 61/0206 (2013.01); B60T 1/005 (2013.01); F16D 25/14 (2013.01); F16H 63/48 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A torque transmitting device for transmitting torque from a driving element to a driven element, the torque transmitting device comprising:
an indexer configured to move between an engaged state in which the torque transmitting device is engaged with the driven element and a disengaged state in which the torque transmitting device is disengaged with the driven element;
an actuator comprising a hydraulic pump and a piston operatively connected to the hydraulic pump, the hydraulic pump being configured to selectively apply a hydraulic pressure to a first side of the piston such that the piston moves the indexer between the engaged state and the disengaged state;
a lock operatively connected to the indexer, the lock engaging the indexer in a first configuration corresponding to the engaged state of the indexer and the lock engaging the indexer in a second configuration corresponding to the disengaged state, the first configuration being different from the second configuration; and
a biasing element configured to provide a biasing force to move the indexer into the engaged state, such that the biasing element is operable to mechanically hold the indexer in the engaged state absent the hydraulic pressure.