Sprung vehicle seat

A sprung vehicle seat comprising a base frame;

• a seat carrier frame displaceable in relation to the base frame;
• a gas spring disposed between said seat carrier frame and said base frame;
• a valve assembly for adjusting the pressure in the gas spring in dependence on the weight of the seat occupant and the desired seat height, said valve assemby comprising a first valve means for adjustment of said seat to the weight of said occupant, a second valve means for said height adjustment which is operably independent and separate from said first valve means and an actuating member for manually actuating said second valve means;
• an actuator means for the purposes of weight adjustment, adapted to be connected to the seat carrier frame and operable in dependence on the seat height to actuate said first valve means;
• and operatively disposed between said seat carrier frame and said actuator means, a coupling means comprising coaxial gears with a fine tooth pitch, said coupling means adapted to couple said actuator means to said seat carrier frame at a plurality of different positions for seat height adjustment.

A sprung vehicle seat comprising a base frame;

• a seat carrier frame displaceable in relation to the base frame;
• a gas spring disposed between said seat carrier frame and said base frame;
• a valve assembly for adjusting the pressure in the gas spring in dependence on the weight of the seat occupant and the desired seat height, said valve assembly comprising a first valve means for adjustment of said seat to the weight of said occupant, a second valve means for said height adjustment which is operably independent and separate from said first valve means and an actuating member for manually actuating said second valve means;
• an actuator means for the purposes of weight adjustment, adapted to be connected to the seat carrier frame and operable in dependence on the seat height to actuate said first valve means;
• and operatively disposed betweeen said seat carrier frame and said actuator means, a pneumatic coupling means adapted to be connected to said second valve means and also adapted to couple said actuator means to said seat carrier frame at a plurality of different positions for seat height adjustment.