Patent ID: 7383612

Claim:
A caster assembly for supporting an object, comprising: a plurality of wheel assemblies; and a landing supported by the plurality of wheel assemblies for receiving the object thereon, the landing lying in a first plane extending through the plurality of wheel assemblies and includes first and second edges that are generally perpendicular to and intersect each other; a first sidewall extending from the first edge of the landing at an angle generally perpendicular to the landing, the first sidewall having inner and outer sides and terminating at an upper edge; a second sidewall extending from the second edge of the landing at an angle generally perpendicular to the landing, the second sidewall having inner and outer sides and terminating at an upper edge; a first leg extending from the upper edge of the first sidewall and lying in a second plane generally parallel to the first plane, the first leg having upper and lower surfaces; and a second leg extending from the upper edge of the second sidewall and lying in the second plane, the second leg having upper and lower surfaces; wherein: the plurality of wheel assemblies depend from the lower surfaces of the first and second legs; the landing extends from the inner side of the first sidewall in a first direction and from the second sidewall in a second direction; the landing has a generally triangular configuration; the first leg extends from the outer side of the first sidewall in a third direction that is generally opposite to the first direction; and the second leg extends from the outer side of the second sidewall in a fourth direction that is generally opposite to the second direction.