Abstract: An infinitely adjustable seat track assembly is provided with a lower track assembly and an upper track assembly releasably slidable on the lower track assembly. The lower track assembly comprises at least one lower track, and a wrap spring wrapped around a rod and aligned with the lower track. The upper track assembly has at least one upper track which can slide in forward and rearward directions over the lower track. A lever is mounted on the upper track assembly. The lever is pivotable from a latching position where the wrap spring wraps tightly around the rod, to an unlatching position where the lever urges the wrap spring to partially unwrap around the rod, thereby permitting the wrap spring to slide along the rod.

Abstract: A seat track assembly comprises a lower track assembly having a lower track and an upper track assembly slidable over the lower track assembly and having an upper track. An elongate upper bracket and an elongate lower bracket enhance resistance to vertical dislocation. The upper bracket is attached to the upper track and has first and second projections which are positioned on opposite sides of the upper track. The lower bracket is attached to the lower track. The upper bracket can slide free of the lower bracket in a normal operating condition, and the first and second projections of the upper bracket are received by the lower bracket to resist vertical dislocation of the upper track when the upper track assembly is subjected to a vertical dislocation force. The first and second projections are preferably unitary extensions of the upper bracket, and are connected to each other by a connecting segment attached to the upper track.

Abstract: An easy entry seat track assembly with full memory comprises a lower track assembly and an upper track assembly, releasably slidable on the lower track assembly. A master latch assembly in a latching position releasably secures the upper track assembly to the lower track assembly at an initial position. A rod is affixed to the lower track assembly, preferably on a lower track, and a memory register comprising a wrap spring is positioned around the rod. A memory actuation mechanism moves the memory register from a normal condition to a memory position and disengages the master latch, allowing the upper track assembly to slide over the lower track assembly to a free position. Return of the upper track assembly to the initial position returns the master latch to reengage the lower track assembly, and then returns the memory register to the normal condition.

Abstract: A seat track assembly for a motor vehicle is disclosed, comprising: an upper track sub-assembly having an upper track; a lower track sub-assembly having a lower track and a stop, with the upper track being slidable over the lower track; and a positive engagement inertia latch for resisting axial sliding motion of the upper track sub-assembly relative the lower track sub-assembly in response to acceleration of the gear relative the lower track sub-assembly. The inertia latch preferably comprises a gear being movable between a non-latching position wherein the gear is rotatable in response to axial sliding of the upper track sub-assembly and a latching position wherein in response to a sudden change in velocity the gear engages the stop, locking the upper track sub-assembly with the lower track sub-assembly. The gear can be mounted on an axle. A base is affixed to the lower seat track sub-assembly, having a contoured surface which receives the axle.