Abstract: An end cap assembly is disclosed for sealing the open end of a cylindrical alkaline cell housing preferably having a diameter less than the diameter of AAA size cells. The end cap assembly is preferably intended for sealing AAAA (LR61) size cylindrical alkaline cells. The end cap assembly comprises a terminal end cap, an insulating sealing disk underlying said end cap, and an elongated current collector penetrating through an aperture in said insulating sealing disk. At least a portion of the insulating sealing disk lies within the cell housing to seal the open end thereof. The terminal end cap is located outside of said housing. The end cap assembly may include an insulating washer between the terminal end cap and the cell housing. The terminal end cap and the insulating washer are stacked over the peripheral edge of the cell housing at the open end of the cell housing. The insulating washer electrically insulates the terminal end cap from the cell housing.

Abstract: A flexible magnetic sheet is made of a rubbery synthetic material in which magnetic ferrite particles have been embedded and which one surface of the sheet has a grid pattern of ridges and depressions. The magnetic material is magnetized so that one pole is one each surface. The magnetic lines of force are generated substantially in a plane.

Abstract: A casting powder granule containing a magnetic material is provided. The granule can be oriented in a desired direction by an applied magnetic field. Cast propellant charges having augmented burning rates can be prepared from magnetically susceptible casting powder granules containing metallic staple which are oriented by a magnetic field prior to addition of casting solvent.