The present invention relates to a dispensing device for dispensing a
liquid or viscous substance, preferably foodstuff. At least one pump
means (4) is provided to perform pump motions for sucking said substance
(2) into the dispensing device (1) and dispense or discharge it
therefrom. The pump means (4) is provided to divide inner parts of the
dispensing device (1) into at least one suction chamber (30) and at least
one dispensing or discharge chamber (31) which are interconnected through
at least one transfer chamber (32). The pump means (4) is during a first
pump motion in one direction (A) provided to suck substance (2) into the
suction chamber (30) and simultaneously dispense or discharge substance
(2) from the discharge chamber (31). The pump means (4) is during a
second pump motion in the opposite direction (D) relative to the first
pump motion provided to feed substance (2) from the suction chamber (30)
and through the transfer chamber (32) into the discharge chamber (31).