Longitudinal adjustment apparatus for a vehicle seat

A seat assembly comprising:

• a seat having a seat back and a seat bottom;
• a longitudinal adjustment apparatus including:
• a first rail adapted to be secured to a support surface and having a plurality of openings defined by spaced-apart lock portions;
• a second rail secured to the seat bottom of the seat and having a plurality of openings defined by spaced-apart lock portions, wherein the first and second rails are supported for movement in a longitudinal direction relative to one another;
• and
• a locking member having first and second portions that each include a plurality of teeth, the locking member being movable between a locked position,
• wherein the teeth of both the first and second portions extend through the openings of both the first rail and the second rail into engagement with the spaced-apart lock portions of both the first rail and the second rail to prevent relative movement of the first and second rails in the longitudinal direction, and an unlocked position, wherein the teeth of both the first and second portions do not extend through the openings of both the first rail and the second rail into engagement with the spaced-apart lock portions of both the first rail and the second rail to allow relative movement of the first and second rails in the longitudinal direction, and
• wherein movement of the locking member between the locked and unlocked positions causes relative movement of the first and second portions in the longitudinal direction.