Abstract: In one aspect, a rotary device is provided, and includes a shaft adapter, a chambered member, a seal member and at least one internal torque transfer member. The shaft adapter is connectible to a crankshaft or accessory shaft and defines an axis. The chambered member (e.g. a pulley) is rotatably connected to it, and at least partially encloses a chamber (e.g. for oil), and includes a circumferential portion, a first side wall, and a second side wall which is a separate member from the circumferential portion. One of the circumferential portion and the second side wall has projections thereon, and the other has valleys that mate with the projections with no clearance, so as to be able to transfer a torque of at least 10 Nm into one another without plastic deformation. A seal member is compressed between the second side wall and the circumferential portion.

Abstract: In an aspect a device for a driven shaft is provided that receives an input torque that varies cyclically between a peak input torque and a low input torque at a peak input torque frequency, which includes a shaft adapter, a rotary drive member, at least one isolation member, a torsional vibration damping structure including an inertia member and a elastomeric damping member, and a supplemental damping structure. The supplemental damping structure applies a supplemental damping torque to resist relative movement between the rotary drive member and the inertia member in addition to damping provided by the elastomeric damping member. A sum of torques including the supplemental damping torque limits a maximum twist between a first end of the driven shaft and a second end of the driven shaft, to below a yield point of the driven shaft.

Abstract: In one aspect, a rotary device is provided, and includes a shaft adapter, a chambered member, a seal member and at least one internal torque transfer member. The shaft adapter is connectible to a crankshaft or accessory shaft and defines an axis. The chambered member (e.g. a pulley) is rotatably connected to it, and at least partially encloses a chamber (e.g. for oil), and includes a circumferential portion, a first side wall, and a second side wall which is a separate member from the circumferential portion. One of the circumferential portion and the second side wall has projections thereon, and the other has valleys that mate with the projections with no clearance, so as to be able to transfer a torque of at least 10 Nm into one another without plastic deformation. A seal member is compressed between the second side wall and the circumferential portion.

Abstract: In an aspect a device for a driven shaft is provided that receives an input torque that varies cyclically between a peak input torque and a low input torque at a peak input torque frequency, which includes a shaft adapter, a rotary drive member, at least one isolation member, a torsional vibration damping structure including an inertia member and a elastomeric damping member, and a supplemental damping structure. The supplemental damping structure applies a supplemental damping torque to resist relative movement between the rotary drive member and the inertia member in addition to damping provided by the elastomeric damping member. A sum of torques including the supplemental damping torque limits a maximum twist between a first end of the driven shaft and a second end of the driven shaft, to below a yield point of the driven shaft.