A tolerance ring including a substrate, and an overlying layer including at least one of a thermal enhancement layer and a retention layer, the thermal enhancement layer including at least one of i) Vickers hardness <400 VPM or ii) a thermal conductivity >100 W/m.Math.K, the tolerance ring being adapted to provide at least one of a) a thermal transfer between the inner member and the outer member, b) a coefficient of friction between the retention layer and the outer member, 1, and a coefficient of friction between the substrate and the outer member, 2, and where 1>2, or c) a retention force, Rf, between the inner member and the outer member, and the assembly has an assembly force, Af, and where Rf>0.1 Af, wherein the tolerance ring includes a plurality of projections protruding radially inward or radially outward.

An assembly method in which an assembly ring is force-fitted between a first part and a second part such as to create: a tightening contact between the first part and the inner face of the ring, by means of plastic deformation of the ring, said tightening contact occupying a first interference zone; and a tightening contact between the second part and the outer face of the ring, said tightening contact occupying a second interference zone. The assembly ring comprises a first ring segment (T1) and a second ring segment (T2) which are stepped axially in relation to one another and which have different radial dimensions from one another, such as to confine the first interference zone to the first ring segment (T1) and the second interference zone to the second ring segment (T2), in order to prevent the first interference zone and the second interference zone from overlapping axially.

We disclose a novel family of mechanical bi-directional speed sensing clutches that use Reactive Intermediate Elements with interlocking wedging ramps, in a first element, corresponding to similarly shaped interlocking wedging ramps in a second element. Such that when said first and second elements are counter-rotated compression or expansion occurs to provide torque-transfer.

A tolerance ring including a substrate, and an overlying layer including at least one of a thermal enhancement layer and a retention layer, the thermal enhancement layer including at least one of i) Vickers hardness <400 VPM or ii) a thermal conductivity >100 W/m*K, the tolerance ring being adapted to provide at least one of a) a thermal transfer between the inner member and the outer member, b) a coefficient of friction between the retention layer and the outer member, .sub.1, and a coefficient of friction between the substrate and the outer member, .sub.2, and where .sub.1>.sub.2, or c) a retention force, R.sub.f, between the inner member and the outer member, and the assembly has an assembly force, A.sub.f, and where R.sub.f>0.1 A.sub.f, wherein the tolerance ring includes a plurality of projections protruding radially inward or radially outward.

A tolerance ring including a sidewall and at least one projection from the sidewall that projects radially and axially to prevent axial displacement of the tolerance ring with respect to a component interior or exterior to the tolerance ring.

A tolerance ring including a substrate, and an overlying layer including at least one of a thermal enhancement layer and a retention layer, the thermal enhancement layer including at least one of (i) Vickers hardness <400 VPN or (ii) a thermal conductivity >100 W/m.Math.K, the tolerance ring being adapted to provide at least one of (a) a thermal transfer between the inner member and the outer member, (b) a coefficient of friction between the retention layer and the outer member, ?1, and a coefficient of friction between the substrate and the outer member, ?2, and where ?1>?2, or (c) a retention force, Rf, between the inner member and the outer member, and the assembly has an assembly force, Af, and where Rf>0.1 Af, wherein the tolerance ring includes a plurality of projections protruding radially inward or radially outward.

A method of securing a yoke to a clutch includes arranging a circlip in a circumferential channel in an outer surface of a tool and inserting the tool inside a bore in the clutch. Legs arranged in the channel extend to expand the circlip to an expanded state to arrange the circlip outside of the channel in a circumferential groove in the bore. A spacer is snapped onto a portion of the clutch and arranged between two ends of the circlip to secure the circlip in the expanded state. The tool is then removed from the bore, and a yoke is inserted into the bore. The spacer is then removed from the bore allowing the circlip to contract such that the spacer partially occupies both the groove and a circumferential depression in the yoke. This secures the yoke to the clutch.

A power transmission device includes a rotor shaft, a gear shaft, and a rattling suppression member. The rattling suppression member is provided between a first shaft end portion and the gear shaft or between a second shaft end portion and the rotor shaft. The first shaft end portion is a portion, protruding to the gear shaft side from one of a pair of first bearings, of the rotor shaft, while the second shaft end portion is a portion, protruding to the rotor shaft side from one of a pair of second bearings, of the gear shaft.

A tolerance ring is arranged between an output-side rotary shaft and a rotor shaft. For this reason, even when looseness in a spline fitting portion of the output-side rotary shaft and rotor shaft is not filled, both the output-side rotary shaft and the rotor shaft are held by the tolerance ring so as not to rattle. Therefore, it is possible to reduce tooth hammer noise that occurs in the spline fitting portion. An output-side rotary shaft has oil passages for supplying lubricating oil to a tolerance ring. Lubricating oil is forcibly supplied through these oil passages to an annular space in which a tolerance ring is accommodated.

The present disclosure relates to bearings, guide sleeves and head restraint assemblies for automobiles.