Abstract: A wheel unit for being mounted in a suitcase comprises a housing which, when installed, has a rectangular chamber that opens to the outside, within which a wheel is retracted under the force of a spring. The wheel is carried on a wheel bracket which is secured to a bearing block suitably movably retained in the housing. To place the same in use, the wheel is pulled against the force of the spring out of the housing, thus correspondingly moving the wheel bracket and bearing block. Assuming a horizontal wheel axis, the wheel and wheel bracket are turned 90.degree. about a vertical axis, and in this extended position, the wheel bracket is received in locking recesses in the housing.

Abstract: A device or wheel unit for mounting in a suitcase, said device having an extensible and retractable wheel for rollably supporting the suitcase, and comprising a housing and a wheel the bearing of which is fixed in a pivotable bifurcated bracket, which device is to be mounted in a corner of the suitcase.