Abstract: An alkaline cell having a flat housing, preferably of cuboid shape. The cell can have an anode comprising zinc and a cathode comprising MnO2. The housing can have a relatively small overall thickness, typically between about 5 and 10 mm. Cell contents can be supplied through an open end in the housing and an end cap assembly inserted therein to seal the cell. There can be a gap between separator and cathode for insertion of additional electrolyte. The end cap assembly includes a vent mechanism, preferably a grooved vent, which can activate, when gas pressure within the cell reaches a threshold level typically between about 250 and 800 psig (1724×103 and 5515×103 pascal gage). The cell can have a supplemental vent mechanism such as a laser welded region on the surface of the housing which may activate at higher pressure levels.

Abstract: An alkaline battery has a cathode including a nickel oxyhydroxide.

Abstract: An alkaline battery has a cathode including a nickel oxyhydroxide.

Abstract: Disclosed is an improved clamping device for keyless mounting of a hub on a shaft of the type comprising an inner wedge ring having a cylindrical inner surface for gripping the shaft when contracted and an outer wedge ring having a cylindrical outer surface for gripping the bore surface of the hub when expanded. The pair of wedge rings have interracting annular surfaces with matching shallow-angle tapers and at least one has a stable dry anti-friction material coated thereon. The pair of wedge rings placed in the annular space between the hub and shaft are engaged with axial force means to cause the outer wedge ring to expand and the inner wedge ring to contract and thereby lock the hub to the shaft.