Abstract: A paving stone, made from concrete material, having a one-piece plane surface and two strip like support attachments arranged on each lateral surface. These support attachments form joints between adjacent paving stones in a laid composite structure. On each side, two support attachments are symmetrically arranged with center spacings relative to the planes of symmetry, wherein these planes of symmetry extend through the centers of adjacent lateral surfaces. When these paving stones are stacked next to each other, the support attachments from a first paving stone is disposed adjacent to a support attachment on an adjacent paving stone.

Abstract: A paving stone, in particular made of concrete, is utilized to produce a stable, highly water-permeable flooring. The paving stones are provided with two opposed side surfaces and two opposed end surfaces, each side and end surface having a trapezoidal recess formed therein; and further, each recess of each side surface is bordered by a bordering surface having an additional recess formed therein.

Abstract: The invention relates to a stack-holding member with ring or disk shaped parts having a radial opening, such as lock rings and the like, which are arranged on a stack-holding member inserted in the inner space of the stack of rings, the stack-holding member supporting the rings, with play, and orienting the rings in the same direction so that the rings may be easily removed from or added to the stack.

Abstract: In connection with a food processor for any type of food preparation operations, such as mixing, stirring, kneading, or the like, with or without additional appliances that can be attached to the basic body of the food processor, and with an associated weighing system and a microprocessor which at least indicates the weighing results, it is proposed that for determining the weight of the ingredients to be processed a no-friction and no-contact leaf spring support is to be provided for decoupling an outer stationary housing from a decoupling carrier or frame in such a way that all the other components of the food processor are supported by the decoupling carrier and any variations of the weight of the latter can be recorded with high precision by weight sensors, preferably in the form of resistance strain gauges, mounted on the leaf springs.

Abstract: In connection with a machine for the treatment of laundry, in particular a washing-machine or drier, comprising weight sensors for automatic measurements of the weight of the laundry and subsequent determination of the quantities of treatment agents to be filled in (water, detergents, or the like), for determining the relative humidity content, for detecting and removing imbalance conditions, it is proposed to arrange a decoupling frame between an outer housing resting on a stationary supporting surface, and the entire inner system of the washing-machine or dryer, including the lye tank with drum and other partial components, the decoupling frame being itself resiliently suspended in the outer housing and supporting all the other components, and to provide weight sensors, preferable resistance strain gauges, which coact with the resilient suspension of the decoupling frame.

Abstract: Known screen printing machines, which have a continuous support for the squeegee, have the disadvantage that the printing is impaired when the support bends. This also applies to constructions with a squeegee support which is independent of the support and the weight of which, in the case of an asymmetrical squeegee arrangement, results in an uneven loading of the squeegee. According to the invention, the support is therefore disposed rigidly at the guide rails, and pneumatic double-action cylinders are arranged directly at the support, the squeegee being fastened at the cylinders so that its angle can be adjusted. A bending off the support does not influence the printing quality, even if the squeegee is not arranged in the center of the support.

Abstract: A screen printing machine is disclosed which has a screen frame mounted on a swivel mount shaft. The swivel shaft for the screen frame extends through the center plane of the screen frame which extends perpendicularly with respect to the movement of the squeegee. Devices are provided which can raise the screen frame on both sides of the swivel shaft. By means of this construction, while the advantages of a compensation of errors are maintained, the screen printing machine may be used for movements of the squeegee in both directions. The new screen printing machine is particularly well suited for the printing of printed circuit boards.