An adjustment mechanism for a motor vehicle seat includes an annular motor with an inner nut housed in a rotor, a bracket attached to the seat, the annular motor being positioned in the bracket, and a lead screw that is threaded through the inner nut. When the annular motor is activated the rotor as well as the inner nut rotate about the lead screw resulting in relative translational motion of the bracket and hence the seat relative to the lead screw.

A track fitting for securing a seat pedestal of an aircraft seat to a floor of an aircraft may comprise a strut and a lock assembly. The strut may include an aft section configured to attach to an aft foot of the seat pedestal, a forward section configured to attach to a forward foot of the seat pedestal, and a central section extending between the aft section and the forward section. The lock assembly may be located proximate the aft section of the strut.

It is provided an adjusting device of a lumbar support or a side-bolster adjuster for changing the contour or position of a seat element of a vehicle seat supporting a body part of a seat user, with at least one driving device comprising a spindle drive and at least one adjustable support element for changing the contour or position of the seat element, wherein the spindle drive comprises a spindle extending along a spindle axis, which on a fastening part of the lumbar support or the side-bolster adjuster mounted in the vehicle seat is floatingly mounted at a spindle end via a spindle holder such that at this spindle end the spindle is displaceable along at least one spatial direction extending transversely to the spindle axis.

The invention relates to a spindle gearbox (1) of an electric seat drive, comprising a gearbox housing (2) for mounting a worm gear (3) and a worm, the worm meshing with the worm gear (3), a threaded spindle (4, 5) connected to the worm gear (3), a first lid (6), and a second lid (7), wherein the first lid (6) and the second lid (7) are fastened parallel to one another on the gearbox housing (2). The threaded spindle (4, 5) is guided through the first lid (6), and the first lid (6) is fastened on the gearbox housing (2) independently of the second lid (7).

An actuator comprises a housing, a motor, a drive mechanism and a clutch coupled to the drive mechanism. The motor is mounted displaceably relative to the housing. A displacement of the motor relative to the housing is operative to actuate the clutch.

A track adjuster includes a first pair of tracks, a first lockset that may be configured to selectively restrict movement of the first pair of tracks, a second pair of tracks, and a second lockset configured that may be configured to selectively restrict movement of the second pair of tracks. The first lockset may be a first type of lockset and the second lockset may be a second type of lockset. The first lockset may include a positive engagement locking lockset. The second lockset may include a pawl-type lockset.

A vehicle seat includes a movable portion, a first spring, a second spring, and a preloading device. The first spring is capable of exerting an elastic force to displace the movable portion, which is displaced in a first direction, toward the neutral position. The second spring is capable of exerting an elastic force to displace the movable portion, which is displaced in a second direction, toward the neutral position. The preloading device is capable varying at least one of an elastic force applied by the first spring to the movable portion placed in the neutral position or an elastic force applied by the second spring to the movable portion placed in the neutral position.

A passenger support includes a vehicle seat and a foundation frame having a lower track and an upper track. The lower track is coupled to a floor of a vehicle in a fixed position relative the floor. The vehicle seat is coupled to the upper track to slide back and forth relative to the lower track.

A linear actuator comprising a housing with a proximal end and a distal end, and defining a central cavity extending axially; a piston tube at least partially positioned axially within the central cavity; a first elongated rotatable screw positioned axially within the central cavity; a first cylindrical nut mounted about the first elongated rotatable screw and configured to move axially as the first elongated rotatable screw rotates; a second elongated rotatable screw positioned axially within the central cavity; a second cylindrical nut mounted about the second elongated rotatable screw and configured to move axially within the central cavity as the second elongated rotatable screw rotates; and a spring positioned around the second elongated rotatable screw between the second cylindrical nut and the distal end of the housing, wherein the spring is configured to bias the second cylindrical nut away from the distal end of the housing.

A rail for a vehicle seat having first and second sliding rail members driven by a motorized drive mechanism. The rail further comprises a mechanical lock actuated by a relative movement between the motorized drive mechanism and the second rail member in the event of an accident.