Patent ID: 8662737

Claim:
A screw device, the screw device comprising: a first member that is non-rotatably connectable to a mixing container of an apparatus for producing a hardenable mass, the mixing container having a mixing space and a mixer to mix at least one powder and at least one liquid component to produce the hardenable mass; a second member configured to be screwed into the first member so as to move a piston arranged in the mixing space, wherein the piston is provided to discharge the hardenable mass from the mixing space, wherein, when the second member is screwed into the first member, the screw device is configured to impart by screw device movements a discharge movement to the piston to discharge the hardenable mass from the mixing space; wherein the second member is connectable to a part of the mixer of the mixing container, such that the second member linearly displaces the mixer when the second member is screwed into the first member; wherein the second member is a pipe member with a multi-side nut; wherein the pipe member has a longitudinal slit which is open in a lateral direction; and wherein the multi-side nut has an open side such that the pipe member and the multi-side nut are configured to be threaded onto an elongated member of the mixer.