Abstract: An electric actuator comprises a main actuator body 12, a driving unit 16, a feed screw shaft 32 for transmitting rotary driving force of a rotary driving source 14, a displacement member 40 for externally fitting and surrounding the feed screw shaft 32 to make displacement along the axial direction in accordance with the engaging action between a male thread 36 and a female thread 42, sensor attachment long grooves 24a, 24b provided at side surface portions of the main actuator body 12, and sensors 25 installed at predetermined portions in the sensor attachment long grooves 24a, 24b.

Abstract: The invention concerns a torsional damper (23) comprising an input element and an output element coaxial and movable in rotation relative to each other counter at least to an compression spring (300), wherein the two adjacent transverse parts, with radial orientation, associated with the input and output elements each comprise a housing (306-308, 302) receiving the spring (300) whereof the opposite ends are capable of co-operating with the supporting end surfaces (316-318, 304) which define the two housings to operate between the two elements; the length (LF) of each of the two associated housings (306-308, 302), separating the opposite supporting end surfaces, being greater than the length (LR) of the spring (300) at rest.

Abstract: A rolling-element clutch assembly including a first race member, a second race member and a plurality of rolling elements. The first race member defines a first race surface having a first ratchet surface portion. The second race member defines a second race surface having a second ratchet surface portion. The first race surface and the second race surface define a raceway therebetween. A plurality of rolling elements are disposed in the raceway. The rolling elements provide rolling support between the first race member and the second race member when the first race member moves in a first direction relative to the second race member. At least one of the plurality of rolling elements engages the first and second ratchet surface portions when the first race member moves in a second direction relative to the second race member.