Abstract: A separator (1) for electrode plates (2) in gel storage batteries having two substantially rectangular layers (3, 3?) of a flat separator material, which layers come to lie in mutually superposed relationship. In order to provide less expensive separators for the separation of plate electrodes in gel storage batteries, which have a low electrical resistance and which afford additional protection for the edges and side surfaces and at the same time permit homogenous gel filling of the storage battery, the invention proposes that the two layers of separator material are connected together at least portion-wise in the region of their edges, forming a casing or pocket for the introduction of an electrode plate and a method and battery employing the separator.

Abstract: A method of synthetic imaging comprising the steps of: emitting a first electromagnetic signal having a first frequency from a first radiation source, emitting at least one second electromagnetic signal having a second frequency from a second radiation source, wherein the first and second frequencies are different from each other, substantially simultaneously receiving the first signal and the second signal with a first receiver, substantially simultaneously receiving the first signal and the second signal with at least one second receiver, arranging an object on the path of at least one electromagnetic signal between the radiation sources and the receivers, wherein the signals are reflected by the object before they meet the receivers, and computing an image of the object from the signals received by the receivers and a device for practicing the method.

Abstract: The present invention concerns a tube plate for an electrode, preferably a positive electrode, of a lead acid battery, wherein the tube plate (2) has an upper frame (3) and a plurality of lead or lead alloy cores (1) extending substantially parallel from the upper frame (3). To provide a tube plate for an electrode of a lead acid battery, with which a lower current density and shorter current paths or diffusion paths for reducing the electrical resistance in comparison with tube plates in accordance with the state of the art are achieved, with the same use of material, it is proposed according to the invention that in the cross-section relative to their longitudinal extent the cores (1) have a surface profile with at least three convex portions (11) and at least three concave portions (12), wherein convex and concave portions (11, 12) alternate in the course of the surface profile.

Abstract: The present invention concerns a vent valve for acid batteries comprising a substantially cylindrical plug portion (28) which is designed for being brought into engagement with a cell opening of the acid battery (1) and which has at least one passage opening communicating the cell interior of the acid battery with the ambient atmosphere, wherein provided in the passage opening is a valve arrangement (29) having an inlet communicating with the cell interior and an outlet connected to the ambient atmosphere. In order to provide a vent valve for an acid battery, in particular an acid battery with fixed electrolyte, which is simple and inexpensive to produce and which affords improved protection against the escape of battery acid, it is proposed in accordance with the invention that at least one turbulence chamber (30) follows the passage opening of the plug portion (28) in the direction of the cell interior and a gas-permeable filter unit (31, 31?) follows the turbulence chamber (30).

Abstract: The present invention relates to an electrode grid for a lead accumulator, comprising a grid substrate (1) and a coherent, galvanically deposited, multi-layer coating (2) on the grid substrate (1), wherein the grid substrate is produced from lead or lead alloy and the multi-layer coating comprises at least two layers which differ in respect of their composition, of which one layer (A) is produced by galvanic deposit of pure lead and one layer (B) which starting from the grid substrate is arranged over the layer (A) is produced by galvanic deposit of lead with at least 0.5% by weight and at most 2.0% by weight of tin.

Abstract: The present invention concerns a vent valve for acid batteries comprising a substantially cylindrical plug portion (28) which is designed for being brought into engagement with a cell opening of the acid battery (1) and which has at least one passage opening communicating the cell interior of the acid battery with the ambient atmosphere, wherein provided in the passage opening is a valve arrangement (29) having an inlet communicating with the cell interior and an outlet connected to the ambient atmosphere. In order to provide a vent valve for an acid battery, in particular an acid battery with fixed electrolyte, which is simple and inexpensive to produce and which affords improved protection against the escape of battery acid, it is proposed in accordance with the invention that at least one turbulence chamber (30) follows the passage opening of the plug portion (28) in the direction of the cell interior and a gas-permeable filter unit (31, 31?) follows the turbulence chamber (30).

Abstract: The present invention relates to a vibration-resistant accumulator with a housing (20), which comprises one or more cell boxes (16) each with a plate block (15) with positive and negative plate groups (14a, 14b), with the individual plates (1a, 1b) in a plate block (15) separated from one another by separators (6), the plates (1a, 1b) of each plate group (14a, 14b) having lugs (2a, 2b) and being connected together electrically by cell connectors (3a, 3b).

Abstract: Vibration-resistant accumulator and method of its manufacture The present invention relates to a vibration-resistant accumulator with a housing (20), which comprises one or more cell boxes (16) each with a plate block (15) with positive and negative plate groups (14a, 14b), with the individual plates (1a, 1b) in a plate block (15) separated from one another by separators (6), the plates (1a, 1b) of each plate group (14a, 14b) having lugs (2a, 2b) and being connected together electrically by cell connectors (3a, 3b).