Land vehicles – Wheeled – Articulated vehicle
Reexamination Certificate
2007-06-26
2007-06-26
Shriver, J. Allen (Department: 3618)
Land vehicles
Wheeled
Articulated vehicle
C280S043240, C280S087050, C280S278000, C280S656000, C280S414100, C280S638000
Reexamination Certificate
active
10876055
ABSTRACT:
A trailer apparatus is for use with a portable bleacher of the type having a lower framework supporting and interconnecting a plurality of generally parallel longitudinally extending bleacher seat assemblies. The framework includes longitudinally spaced laterally extending base members. The trailer apparatus includes a torque tube rotatably attached to a lower part of the bleacher framework and above the base members to extend beneath and generally perpendicular to the seat assemblies. A torque arm is rigidly attached to one end of the torque tube. A first wheel assembly is rotatably coupled to the torque arm on an axis of rotation parallel to the torque tube axis. A generally vertically or horizontally extendable lift jack is coupled at a lower end to the torque arm and operatively coupled at its upper end to the framework. A lift jack operator moves the lift jack between an extended position to rotate the torque tube in one direction to move the first wheel assembly to a lower trailering position and a retracted position to rotate the torque tube in the opposite direction to move the first wheel assembly to a raised position.
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Andrus Sceales Starke & Sawall LLP
Collado Cynthia F.
Shriver J. Allen
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