Patent ID: 6499258
Filing Date: 2002-12-31
Classification: B60S,B62D,E04H

Abstract:
A portable bleacher construction comprising:a wheeled framework for supporting a plurality of bleacher seats thereon in a mobile travel condition and a stationary seating condition; at least one pair of leveling jacks located on opposite sides of the framework for stabilizing the framework in the seating condition upon a ground surface, wherein each of the jacks has an upper tubular member fixed to the framework, and a lower tubular member with a ground-engaging foot telescopically received and slidably mounted in the upper tubular member for upward and downward movement relative thereto; and a control arrangement associated with one of the jacks for separately controlling the leveling of both of the jacks, wherein the control arrangement includes a first rotatable crank assembly and a second rotatable crank assembly, wherein the first and second crank assemblies are movably mounted on an upper end of the upper tubular member of one of the jacks for moving the lower tubular members of both of the jacks on opposite sides of the framework upwardly and downwardly independent of each other.