An electric damper for a vehicle may include: a housing body fixed to a vehicle body; a gear bar including a first end coupled to a knuckle of a wheel, and a second end extending into the housing body, with a rack gear provided on the gear bar; a first intersection gear unit installed in a direction intersecting a movement direction of the gear and configured to engage with the rack gear and rotate; a first power transmitting gear unit configured to engage with the first intersection gear unit and rotate, and including a rotating shaft installed parallel to the gear bar; a rotator configured to engage with the first power transmitting gear unit, and provided in a shape enclosing an outer surface of the gear bar; and a stator installed in the housing body at a position facing the rotator and having a magnetic force.

A torsional vibration damper includes a common axis of rotation extending along an axial direction, an input part, an output part, rotatable relative to the input part in a limited manner with torque transmission, and a ramp system. The ramp system includes an axially displaceable component, a plurality of rolling elements for converting rotation of the input part relative to the output part into an axial shifting of the axially displaceable component, and a plurality of energy storage elements. The plurality of energy storage elements are arranged distributed along a circumferential direction, extend along the axial direction, and are elastically deformable in the axial direction.

A damping spindle mechanism includes a spindle, a sleeve, a housing and a blade. The sleeve is coupled to the spindle; the housing is disposed with a chamber, one section of the spindle threaded with the sleeve is assembled in the chamber of the housing to form a closed chamber; the close chamber is filled with damping oil and is separated to a first chamber body and a second chamber body by the sleeve; the sleeve is disposed with a first passage connecting the two chamber bodies in the axial direction; wherein the blade is of ring shape or arc shape coupled to the internal wall surface of the housing, the blade is disposed with a deformable first thin wall. When the blade moves towards the second chamber body, the first thin wall deforms towards the internal wall surface of the housing.

A snubber for a machine includes a housing, a shaft and a pinion that is coupled to the shaft. The housing is mounted on an implement of the machine. The shaft is rotatably received within the housing and operatively coupled to a movable component of the implement. The snubber also includes a cylinder defining a cavity, a piston slidably received within the cylinder, a rack coupled to the piston, and a hydraulic device. The cylinder is at least partly disposed within the housing. The piston divides the cavity of the cylinder into a first chamber and a second chamber. The rack engages with the pinion to convert a rotation of the shaft into a linear movement of the piston. The hydraulic device is in fluid communication with the cavity and controls a flow of fluid between the first chamber and the second chamber to oppose rotation of the shaft.

An apparatus is provided for vibration damping and isolation. The apparatus includes a housing having an inner surface defining a passage therethrough, a first bellows disposed within the housing passage, the first bellows having an outer surface and spaced apart from the housing inner surface to define a first chamber having a volume, and a second bellows disposed within the housing passage, the second bellows having an outer surface and spaced apart from the housing inner surface to define a second chamber having a volume. The apparatus further includes a restrictive flow passage in fluid communication with the first and second chambers, fluid disposed within the first chamber, the second chamber, and the restrictive flow passage, and a shaft positioned externally to the housing and coupled with the first bellows and the second bellows. The shaft is configured to selectively receive a force to thereby move the fluid through the restrictive flow passage to increase the first chamber volume and decrease the second chamber volume or to decrease the first chamber volume and increase the second chamber volume.

A shock absorber includes a mechanical stop for torque converter that prevents the exterior springs from reaching the solid length. The shock absorber with mechanical buffer stop includes a drive plate; at least one exterior spring; and a driven plate, the driven plate additionally includes at least one mechanical stop which is configured to make contact with the drive plate when the drive plate compresses each exterior spring, and each mechanical stop is located such that it prevents each exterior spring from reaching a solid-length condition.

The flywheel device comprises a disc-shaped body, a pair of ball screw members, and a pair of masses. The ball screw member includes a screw shaft and a pair of ball nuts. The screw shaft is received in the disc-shaped body and has a middle section, a left section with forward threads, and a right section with reverse threads. One of the ball nuts is screwed to the left section of the screw shaft, and the other ball nut is screwed to the right section of the screw shaft. One of the masses is coupled to the ball nuts screwed to the left sections of the screw shafts, and the other mass is coupled to the ball nuts screwed to the right sections of the screw shafts.

A rotating electrical machine comprises a frame, a rotating device, a first stator, a second stator, and a flywheel. The rotating device, along with the first and second stators, is accommodated inside the frame. The rotating device consists of a rotor and a shaft fixed at the center of the rotor. The rotor rotates by electromagnetically interacting with the first and second stators. The shaft rotates simultaneously with the rotor. The flywheel is coupled to the shaft and is driven by it. Thus, the rotating electrical machine can operate in either energy storage or energy release mode. And an operating method for the rotating electrical machine.

A spring mechanism includes: a drive unit; a main body that houses the drive unit; a first structure that is disposed facing a first main surface of the main body and separated from the main body; and at least one first elastic member that has a first main surface side end movably connected to the first main surface and a first structure side end movably connected to the first structure, the at least one first elastic member including a non-circular cross-sectional shape. The first elastic member rotates about a longitudinal axis by driving of the drive unit, thus allowing a repulsive force of the first elastic member with respect to a load component in a direction in which the first structure is pressed against the main body to be variably set.

Systems and devices to control linear, rotational, and/or arcuate motion are provided herein. In some examples, a pin system is configured for insertion in a door and/or door jamb, and to control motion of the door, such as a speed with which the door closes. In some examples, a hinge pin is configured to replace a conventional hinge pin and to control motion of the door. In some examples, a hinge system is configured to replace a conventional door hinge and to control motion of the door.