Abstract: A heat accumulator device is provided having a metal phase-change material as an accumulator material, the heat accumulator device including at least one a holding chamber having a holding space for the accumulator material, a housing for the holding space, at least one heat input apparatus for inputting heat into the at least one holding chamber, and at least one heat output apparatus for outputting heat from the at least one holding chamber. A coupling region of the heat input apparatus, provided for thermal coupling to the accumulator material, and/or a coupling region of the heat output apparatus, provided for thermal coupling to the accumulator material, is arranged, at least in part, at a distance from the accumulator material.

Abstract: A process and device for foaming casings, particularly refrigerator casings, with a blowing agent which can form an explosive mixture with atmospheric oxygen during evaporation which reduce the risk of explosion by introducing inert gas into the space in which the foam is to be formed by means of a servo-controlled inlet valve.

Abstract: The object of the present invention is used to clamp the fabric to be embroidered in mechanical and manual embroidery.In embroidery hoops with an outer contour deviating from the circular shape, the task is to achieve uniform distribution of the contact pressures over the entire clamped surface between the inner hoop and the outer hoop. This task is accomplished by designing the shape of the cross section of the sections of the inner hoop between two axes such that the bending stiffness is essentially constant over the entire circumference of the inner hoop and the extension stiffness decreases continuously between two axes such that it reaches a minimum in the area of the smallest radius of curvature. The cross-sectional shape of the sections of the outer hoop between two axes is designed such that the extension stiffness between two axes changes in the direction opposite the change occurring in the inner frame.