Patent attributes
An adjustment device for a seat depth adjustment of a motor vehicle seat that has (a) a seat pan comprising a seat part and a supporting plate, the supporting plate being slidably connected to the seat part via a guide in a longitudinal direction and (b) an electric gear motor comprising a pinion. The seat part comprises a first gear plate. The supporting plate comprises a second gear plate. The guide has a left and a right profile and a left and a right counterprofile. A toothed rack extending in the same direction is associated with each counterprofile. The teeth of the two toothed racks face each other. Each toothed rack engages a gear wheel. One of the gear wheels engages an idler gear. The other gear wheel and the idler gear engage the pinion of the gear motor.