A folding table (10) has two folding tabletops (12) and associated benches (14) which fold on a linkage (38). The support legs (18) have main support wheels (26) and stabilizing wheels (3) mounted on an outrigger (32) extending outward from the main support wheel riser (28) providing additional stability....http://www.google.fr/patents/US4932333?utm_source=gb-gplus-shareBrevet US4932333 - Stabilizing wheels for folding table
