A drive device for a moveable furniture part, in particular a door or a flap, comprising - a carrier, - an ejection device moveable relative to the carrier for the ejection of the moveable furniture part from a closed position in the opening direction, wherein the ejection device has an ejection element mounted moveably to the carrier and an ejection force storage means which acts on the ejection element upon ejection, wherein the ejection element has an ejection slide and a ejection lever acted upon by the ejection force storage means and mounted moveably to the ejection slide, wherein the ejection force storage means has a first force storage base and a second force storage base, - a tensioning device for tensioning the ejection force storage means, wherein the tensioning has a tensioning lever which upon tensioning is acted upon by the ejection force storage means and upon tensioning bears against a tensioning part which is fixed with respect to the carrier, and - a locking device for locking the ejection device in a locking position, wherein the locking device can be unlocked by overpressing the moveable furniture part into an overpressing position behind the closed position, wherein the locking device has a locking lever mounted moveably to the ejection lever and a locking path provided in or on the ejection slide, wherein the ejection lever is lockable in the locking position by way of the locking lever in the locking path, wherein the entire locking force storage means is moveable with the ejection device relative to the carrier, wherein upon tensioning both force storage bases (K1, K2) are moveable relative to the carrier, wherein upon ejection both force storage bases (K1, K2) are moveable relative to the carrier. - a carrier, - an ejection device moveable relative to the carrier for the ejection of the moveable furniture part from a closed position in the opening direction, wherein the ejection device has an ejection element mounted moveably to the carrier and an ejection force storage means which acts on the ejection element upon ejection, wherein the ejection element has an ejection slide and a ejection lever acted upon by the ejection force storage means and mounted moveably to the ejection slide, wherein the ejection force storage means has a first force storage base and a second force storage base, - a tensioning device for tensioning the ejection force storage means, wherein the tensioning has a tensioning lever which upon tensioning is acted upon by the ejection force storage means and upon tensioning bears against a tensioning part which is fixed with respect to the carrier, and - a locking device for locking the ejection device in a locking position, wherein the locking device can be unlocked by overpressing the moveable furniture part into an overpressing position behind the closed position, wherein the locking device has a locking lever mounted moveably to the ejection lever and a locking path provided in or on the ejection slide, wherein the ejection lever is lockable in the locking position by way of the locking lever in the locking path, wherein the entire locking force storage means is moveable with the ejection device relative to the carrier, wherein upon tensioning both force storage bases (K1, K2) are moveable relative to the carrier, wherein upon ejection both force storage bases (K1, K2) are moveable relative to the carrier.