Abstract: A spring for a spring core, wherein the spring has helical windings and a first end winding and a second end winding, wherein at least the first end winding has a free end and the free end has at least one passage and the opening of the passage is directed outwardly with respect to the end winding of the spring, is distinguished by the fact that the passage is inclined out of a horizontal plane preferably about an angle ? in the compression direction of the spring.

Abstract: A method for producing an upholstery spring, such as for upholstered furniture or mattresses includes several steps. One of the steps includes at least regionally applying a heat-sensitive colour indicator to a spring steel wire before, during or after the bending of the spring steel wire. The spring steel wire is heated to at least the changeover temperature of the colour indicator. The upholstery spring is then finished.

Abstract: A method for producing a pocket spring core including multiple interconnected spring coils, each having a plurality of individual helical springs arranged one behind the other and encased in a pocket is disclosed. At least some of the spring coils are made of at least two partial spring coils abutting each other at their end faces. A spring coil made of partial spring coils is formed by progressively synchronously joining and interconnecting the partial coils together in the position in which their end faces point towards each other relative to the longitudinal axes of their individual springs.

Abstract: A spring core includes a plurality of rows of springs which are disposed parallel to each other and each of which includes a plurality of individual springs connected to each other. The spring core is designed in such a way that each spring is in the form of a ring which is disposed on edge in the loading direction and made of an elastically deformable wire having an inwardly directed notch in the progression of the contour.

Abstract: An innerspring assembly includes a plurality of first springs arranged side-by-side in axis-parallel relationship and wound in the form of a helix. Several first springs which are arranged behind one another in a row define a spring strand. An edge reinforcement is formed by second springs placed on at least two opposite borders of the innerspring assembly, with each second spring being connected with two first springs of an adjacent spring strand.

Abstract: An innerspring assembly includes a plurality of first springs arranged side-by-side in axis-parallel relationship and wound in the form of a helix. Several first springs which are arranged behind one another in a row define a spring strand. An edge reinforcement is formed by second springs placed on at least two opposite borders of the innerspring assembly, with each second spring being connected with two first springs of an adjacent spring strand.

Abstract: A spring core includes a plurality of individual springs. Each individual spring includes at least one spring band configured to be deformed to have a bulge and shaped to form at least a partial ring in a loading plane.

Abstract: A spring core includes a plurality of helically wound springs. At least two of the springs include a bulging at least at one of two end regions of each of the at least two springs in a direction of a longitudinal axis of the at least two springs.

Abstract: An innerspring assembly includes a first plurality of interconnected strings of pocketed first springs. A second plurality of strings of springs is provided and so incorporated in the innerspring assembly that at least one string of springs of the second plurality is placed between two neighboring strings of the first plurality of interconnected springs, wherein the second springs have a diameter which is smaller than a diameter of the first springs.

Abstract: A pocketed spring core includes a plurality of springs which are arranged sequentially in rows to form parallel adjoining spring strands, wherein each of the springs is supported in a pocket made of flexible material. A first cover sheet is placed over and connected to the spring strands, and a second cover sheet is placed under the spring strands and connected thereto. At least one of the first and second cover sheets has predetermined regions which are opened in a direction transversely to a longitudinal extension of the spring strands by a plurality of slots to thereby form strips.

Abstract: An innerspring assembly, preferably pocketed spring core, includes a plurality of interconnected springs having a same height and arranged to form adjoining rows to provide a resting area. At least several of the rows are arranged in relation to the respectively neighboring rows offset in height.

Abstract: A pocketed spring core includes a plurality of springs which are arranged sequentially in rows to form parallel adjoining spring strands, wherein each of the springs is supported in a pocket made of flexible material. A first cover sheet is placed over and connected to the spring strands, and a second cover sheet is placed under the spring strands and connected thereto. At least one of the first and second cover sheets has predetermined regions which are opened in a direction transversely to a longitudinal extension of the spring strands by a plurality of slots to thereby form strips.

Abstract: An innerspring assembly, preferably pocketed spring core, includes a plurality of interconnected springs having a same height and arranged to form adjoining rows to provide a resting area. At least several of the rows are arranged in relation to the respectively neighboring rows offset in height.

Abstract: An innerspring assembly includes a first plurality of interconnected strings of pocketed first springs. A second plurality of strings of springs is provided and so incorporated in the innerspring assembly that at least one string of springs of the second plurality is placed between two neighboring strings of the first plurality of interconnected springs, wherein the second springs have a diameter which is smaller than a diameter of the first springs.