Abstract: A battery cell having a cell housing, in which a plurality of electrodes is disposed. The cell housing comprises a wall having a pre-determined breaking region. The predetermined breaking region comprises an opening which is covered by a gas-permeable membrane. A recess extending to the opening is introduced into the wall in the predetermined breaking region.

Abstract: A battery cell having a cell casing in which a number of electrodes are arranged. The cell casing has an opening that is is covered by a gas-permeable membrane. An exterior of the membrane is covered by a cover element in order to restrict the ingress of matter into the cell casing.

Abstract: A battery cell having a cell casing in which a number of electrodes are arranged. The cell casing has a rupture region. The rupture region having an opening. The opening being covered by a gas-permeable membrane.

Abstract: There is presented herein a closed container comprising at least one container wall, a seam connecting two edges of the at least one container wall and a vent, wherein at least a portion of the seam is formed around the vent.

Abstract: An assembly (1) for protecting an acoustic device comprises an expanded polytetrafluorethylene (ePTFE) membrane (3) and first and second polymeric substrates (2, 4) disposed on opposing sides (5, 6) of the membrane (3). The first substrate (2) is transmissive for laser light of a predetermined wavelength, and the membrane (3) is joined to the first and second substrates (2, 4) by first and second laser weld joints (9, 10) on the first side (5) of the membrane (3) and the second side (6) of the membrane (3), respectively, that are created in a single laser transmission welding step through the first polymeric substrate (2) towards the second polymeric substrate (4). The first side (5) of the membrane (3) may be at least partially absorbent for the laser light and the second side (6) may be at least partially transmissive for the laser light. This may be achieved by a color gradient from black to white from the first side (5) to the second side (6).

Abstract: An assembly (1) for protecting an acoustic device comprises an expanded polytetrafluorethylene (ePTFE) membrane (3) and first and second polymeric substrates (2, 4) disposed on opposing sides (5, 6) of the membrane (3). The first substrate (2) is transmissive for laser light of a predetermined wavelength, and the membrane (3) is joined to the first and second substrates (2, 4) by first and second laser weld joints (9, 10) on the first side (5) of the membrane (3) and the second side (6) of the membrane (3), respectively, that are created in a single laser transmission welding step through the first polymeric substrate (2) towards the second polymeric substrate (4). The first side (5) of the membrane (3) may be at least partially absorbent for the laser light and the second side (6) may be at least partially transmissive for the laser light. This may be achieved by a color gradient from black to white from the first side (5) to the second side (6).

Abstract: A membrane electrode assembly (MEA) with a first structural film layer disposed at its periphery, a second structural film layer adhered to the first structural film layer by an adhesive, at least one of the first and second structural film layers also being adhered to one of an anode and cathode by the adhesive, the MEA and the first and second structural film layers being sandwiched by a pair of gas diffusion layers, characterized in that the first structural film layer has a plurality of vias therein; and the second structural film layer has a plurality of vias therein which are in non-overlapping relation to the vias in the first structural film layer.

Abstract: A catalyst coated membrane assembly comprising a solid polymer electrolyte membrane, an electrode that covers substantially one entire face of said solid polymer electrolyte membrane, and a structural film layer attached to at least two opposing outer regions of said electrode such that it partially overlaps the open face of said electrode. The use of structural film layer allows for high volume, high yield manufacturing of assemblies, leading to reduced assembly cost.

Abstract: The comminution and distribution device according to the invention can be used to crush comminutable, pumpable materials, in particular mechanically dewatered slurry, into roughly the same sized pieces, and feed them in controllable quantities to a downstream device, e.g., a dryer. To this end, the slurry is conveyed through a gap formed by two oppositely rotatable parts. In preferred embodiments of the device according to the invention, both parts exhibit recesses on the side facing the gap, which are designed in such a way that, when the two parts are turned opposite each other in the preset rotational direction, slurry strands with periodically alternating areas with smaller and larger cross sections are formed, transported outside and split at locations exhibiting smaller cross sections.