The invention relates to an elevator car which is suitable for elevators in which all of the elements which are to be maintained and checked are arranged outside the elevator car, opposite only one side of the elevator car. The precursors consist of complex, mixed alkali transition metal oxides of the formula LixAyO2+d, where M represents one or more selected from transition metal elements beside Ni and Mn, and the groups IIA and IIIA elements of the periodic table, x is between 1 and 1. The cross section includes, typically, a wire frame, a hard plastic encapsulation layer and an elastomeric outer layer. A short, quick, one-handed motion enables immediate adjustment and application of this clamp. The removed section can be used as a lid or splash-guard on the pouch-bowl.