Patent ID: 6474663
Filing Date: 2002-11-05
Classification: B62B,E06C

Abstract:
A combined pair of ladders and transportation dolly device, said device comprising:a first framework having a first and a second end; a second framework having a first and a second extremity, said first extremity of said second framework being pivotally secured to said first end of said first framework about a first pivotal axis; a loading platform for supporting a load, said platform having a first and a second edge, said platform being pivotally secured to said second end of said first framework about a second pivotal axis, said second axis being disposed between said first and second edges thereof; a tie bar having a first and a second termination, said first termination being pivotally secured to said second edge of said platform about a third pivotal axis, said second termination being pivotally secured to said second framework about a fourth pivotal axis, said fourth axis being disposed between said first and second extremities thereof; and a wheel rotatably secured to said platform, the arrangement being such that in a first mode of operating the device, when said first and second frameworks are pivoted away from each other, said frameworks constitute said pair of ladders and in a second mode of operating said device, when said first and second frameworks are pivoted towards each other, said wheel permits transportation of the device together with the load supported on said platform.