Abstract: A lead screw which is to be moved in a direction. A nut is screwed to the lead screw. A first bracket is to be swung by moving the lead screw so as to move a seat up and down. The first bracket has a first opening. The nut is fitted in the first opening. A second bracket is to move the seat up and down with the first bracket. The second bracket has a second opening of a size larger than that of the first opening. The second opening is to pass the nut in an inclined position therethrough. The second opening is to position the nut therein.

Abstract: A power adjustable vehicle seat with a seating that is adjustable in height has a side part and an electromotor. The electromotor comprises a flange-mounted transmission, which transmission is provided with an output shaft and with a transmission case. The side part is provided with a bearing for the output shaft. The transmission case has an area axially facing said bearing for the output shaft. The area facing the side part is open-ended by having no case wall on that open end axially facing the bearing for the output shaft. The side part functions as a case wall of the transmission case once the transmission case is fastened to the side part.

Abstract: The invention presents a vehicle seat with an adjusting mechanism, for example with a height adjustment of the seat area or with a length adjustment of a longitudinal guiding (20, 22), whereas the adjusting mechanism is provided with an electromotor (36), a step-down gear (34) and an adjusting device having a first adjusting element as well as a second adjusting element which may be adjusted relative to the first adjusting element. The adjusting mechanism is additionally provided with a constantly engaged brake (38) that is leading to a braking moment in both senses of rotation of the electromotor (36), the braking moment being calculated so as to be considerably smaller than the active driving moment of the electromotor (36) but so as to be bigger than the passive torques occurring during normal operation of the vehicle due to all kinds of acceleration and loads.

Abstract: A chair includes a base and a seat each having two side tracks and a front track. Three pairs of pivotal bars have upper ends coupled to the tracks of the seat and have lower ends coupled to the tracks of the base. The bars may expand and fold when the seat moves up and down relative to the base. A tube is extended in the base, the seat includes a downward extending rod slidably engaging in the tube and threaded with a bolt. A motor is coupled to the bolt for driving the bolt and for moving the seat up and down relative to the base to adjust the height of the seat relative to the base.