Wheeled suitcase with auxiliary wheels on legs and undercarriage therefor

摘要

A wheeling frame for a suitcase which has its own rolling wheels includes a frame supporting a pair of leaning wheels arranged at ends of a pair of pivotable legs, with a first wheel arranged at the end of a first leg and a second wheel arranged at the end of a second leg. The leg positions are adjustable between a stowed position and a deployed, adjustable position extending at an angle to the frame. The legs have a movable pivoting axis and adjustable lengths. A handle system at a proximal end of the frame is adjustable in length and angle, and is operable in conjunction with the leaning wheels to roll the suitcase in a stable leaning position, to allow walking the suitcase on steps of a staircase, and to be converted into a suitcase table, to ease packing and unpacking.

主权项

1. A wheeling frame for wheeling a load which is rollable on its own load supporting wheels, the wheeling frame comprising:
a frame defining a frame plane, the frame being removably securable to the load in such manner that the load is rollable and its weight is supported on said load supporting wheels; a wheeling leg assembly stowable in the frame and movable between a first position in the frame plane and a second position extending at an angle to the frame plane; at least one leaning wheel secured to the wheeling leg assembly, and the wheeling frame being structured so that it lacks its own load bearing wheels for supporting the load; and a fastening system structured to removably secure the wheeling frame to the load, whereby, when the wheeling frame is secured to the load, the load can be rolled such that its load is substantially carried by the supporting wheels while also leaning on the at least one leaning wheel of the wheeling leg assembly; and a spring biased mechanism configured and biased to urge the wheeling leg assembly toward the second position and yieldingly hold the wheeling leg assembly at the second position, the wheeling frame being so constructed that the at least one leaning wheel is only yieldingly held at the second position.