Friction controlled damper for a torque transmission device

A torque transmitting device comprising:

• a flange forming an input for the device and including a damper stop tab extending radially outward;
• a plate including first and second curved slots;
• a curved friction assembly including:
• at least one curved engagement plate:
• including an engagement tab extending radially inward and at least partially circumferentially aligned with the damper stop tab;
• at least partially rotatable with respect to the plate;
• and,
• at least partially disposed in the first and second curved slots;
• at least one curved friction plate:
• rotationally fixed to the plate;
• at least partially disposed in the first and second curved slots;
• and,
• in contact with the at least one curved engagement plate;
• and,
• a resilient element:
• in contact with one of the at least one curved engagement plate or the at least one curved friction plate;
• and
• urging the one of the at least one curved engagement plate or the at least one curved friction plate into contact with the other of the at least one curved engagement plate or the at least one curved friction plate;
• and
• at least one elastic element engaged with the flange, wherein:
• the flange is at least partially rotatable with respect to the plate such that the damper stop tab is engageable with the engagement tab.

A power take off gear comprising:

• a flange forming an input for the device and including a damper stop tab extending radially outward;
• a ring gear including:
• a cavity opening to an inner circumference of the ring gear;
• first and second circumferentially curved slots open to the cavity;
• and,
• third and fourth circumferentially curved slots radially outward from the first and second curved slots and open to the cavity;
• a circumferentially curved friction assembly including:
• at least one circumferentially curved engagement plate:
• including an engagement tab extending radially inward;
• and,
• at least partially disposed in the cavity and the first and second circumferentially curved slots;
• at least one circumferentially curved friction plate:
• rotationally fixed to the ring gear;
• and,
• at least partially disposed in the cavity and the third and fourth circumferentially curved slots;
• and,
• a resilient element urging the at least one circumferentially curved engagement plate and the at least one circumferentially curved friction plate into contact;
• and
• at least one elastic element engaged with the flange and the first and second cover plates, wherein:
• for first torque applied to the flange in a rotational direction at a first magnitude, the flange is arranged to rotate with respect to the ring gear in the rotational direction such that:
• the damper stop tab contacts the engagement tab;
• the flange displaces the at least one circumferentially curved engagement plate in the rotational direction;
• and,
• frictional engagement of the at least one circumferentially curved engagement plate with the at least one circumferentially curved friction plate dissipates at least a portion of the first torque to dampen the rotation of the flange in the first rotational direction.