The invention relates to a tabletop device for mixing and discharging
multi-component compounds, particularly a dental impression compound,
having discharging plungers (8a, 8b), a motorized drive (24) for the
discharging plunger (8a, 8b), a switchable coupling (30) for the coupling
or decoupling of the discharging plunger (8a, 8b) to or from the
motorized drive (24), and at least one handle (3a, 3b) for the
displacement of the discharging plunger (8a, 8b) to be carried out
manually in the decoupled state thereof. In order to minimize the design
effort of such a tabletop device, the invention provides that the
switchable coupling (30) comprises a coil spring (34) for the releasable
frictional connection of the drive side (31) to the output side (14) of
the coupling (30).