Universal seat suspension system

A seat suspension system for supporting a seat of an industrial vehicle, said suspension system comprising:

• a seat cradle;
• a seat mounted in said seat cradle, said seat having a sitting portion and a backrest portion;
• an anchor body having a hollow shape and a pair of parallel spaced-apart anchor plates enclosing said hollow shape, said anchor body being disposed behind said backrest portion of said seat;
• said anchor body also having two pairs of spaced-apart parallel bars;
• each of said bars having spaced-apart first and second ends, said first ends being movably connected to said anchor body and said second ends being movable connected to said seat cradle for allowing a movement of said seat cradle relative to said anchor body;
• an air bellows having an upper end connected to said seat cradle and a lower end connected to said anchor body for cushioning said movement of said seat cradle;
• said two pairs of parallel bars comprising an upper pair of parallel bars and a lower pair of parallel bars;
• said bars in said upper pair being rigidly connected to one-another by a torsion rod for preventing movement of said parallel bars in said upper pair relative to one-another;
• said torsion rod being mounted in a pair of bearing blocks having adjustable connection means retaining said bearing blocks to said anchor body;
• and
• connection means affixed to said anchor plates for attachment to a frame of said industrial vehicle, said connection means comprising a swing-out attachment kit comprising a hinged connection having an axis of rotation aligned substantially perpendicular to a sitting plane of said sitting portion for allowing said seat cradle and said anchor body to move from a vehicle-driving position to a vehicle-servicing position different from said vehicle-driving position when said swing-out attachment kit is adapted to be mounted to said frame of said industrial vehicle;
• such that a position of said torsion rod relative to said anchor body, and a levelling of said seat cradle are adjustable by working said adjustable connection means, and said seat cradle and said anchor body being simultaneously movable about said axis of rotation.