A method for producing a wound electrode assembly includes a winding a lamination sheet around a winding shaft by feeding the lamination sheet and by rotating the winding shaft, the winding shaft having an outer circumferential surface of an oval shape including a pair of flat surfaces facing each other and a pair of arcked surfaces connecting both of ends of the pair of flat surfaces to each other; and pressing the lamination sheet formed to have an oval shape, such that a pair of flat portions of the lamination sheet are pressed to each other. In the winding the lamination sheet, the lamination sheet is fed by, per rotation of the winding shaft, a length longer than an outer circumferential length corresponding to the number of winds of the lamination sheet wound around the winding shaft.

A disclosed forming system is a forming system which expands and forms a metal pipe in a die. The forming system includes a preliminary forming apparatus which preliminarily forms a metal pipe material, a forming apparatus which includes a gas supply unit which supplies gas into the preliminary-formed and heated metal pipe material to expand the metal pipe material and a main body portion to which the die is attached, and a cutting device which cuts at least a portion of the formed metal pipe. The gas supply unit is provided so as not to be disposed on a first straight line which connects the preliminary forming apparatus and the main body portion in a plan view and a second straight line which connects the cutting device and the main body portion in a plan view.

The invention relates to a beverage preparation device comprising a cylindrical chamber with a jacket provided with a filling opening for receiving a powder-like or granular substance and an ejection opening for ejecting the substance, a first and a second compression element, positioned perpendicularly with respect to a longitudinal axis of the chamber, a displacement member for relative displacement of the first compression element with respect to the jacket between a filling position, a compression position and an ejection position, wherein the compression elements in the filling position delimit a filling volume and the compression elements in the compression position delimit a preparation volume positioned along a longitudinal axis and at a distance from the filling volume, wherein the first compression element engages the inner wall of the jacket in a fluid-tight manner and a fluid supply channel and a fluid discharge channel that in the compression position is in fluid-communication with the preparation volume.