Abstract: A supply unit for a cleaning machine which can be connected via at least one flexible hose, has a heating device for heating water, a water pump for conveying water into or out of the heating device, a hot water and/or steam connector which is connected to the outlet of the heating device, a dirty water tank, a suction device, which preferably includes a suction turbine, for sucking dirty water from a dirty water connector into the dirty water tank. In a preferred embodiment the unit has at least one, preferably precisely one central, drive unit for driving at least one, preferably a plurality of or all components to be driven of the supply unit and/or of a cleaning machine to be connected to it.

Abstract: A supply unit for a cleaning machine which can be connected via at least one flexible hose, has a heating device for heating water, a water pump for conveying water into or out of the heating device, a hot water and/or steam connector which is connected to the outlet of the heating device, a dirty water tank, a suction device, which preferably includes a suction turbine, for sucking dirty water from a dirty water connector into the dirty water tank. In a preferred embodiment the unit has at least one, preferably precisely one central, drive unit for driving at least one, preferably a plurality of or all components to be driven of the supply unit and/or of a cleaning machine to be connected to it.

Abstract: An apparatus for preventing removal of, or tampering with, a construction fitting includes two construction element engaging components and a fastener for connecting the two construction element engaging components to one another. The fastener includes a bolt extending between the two construction element engaging components and a nut for tightening on the bolt rigidly connecting the two engaging components with a gap therebetween. A body portion, for at least partially covering a nut, prevents access thereto by an unfastening tool with the body portion extending from the nut to a position alongside the bolt within the gap. A locking device is able to be moved relative to the body portion between a first position, in which the apparatus is removable from the construction fitting, and a second position in which the apparatus is prevented from being removed from the construction fitting with the locking device extending, in the second position, from the body portion in a direction toward the bolt with the gap.