BATTERY SEPARATOR WITH IMPROVED SHOULDERS

摘要

A battery separator (10) for use in enveloping the plates of a flooded cell type lead acid battery. The separator has improved puncture resistance in th e shoulder areas provided by a plurality of improved mini-ribs (30) located therein. The mini-ribs have substantially flat upper surfaces (31), and the space between adjacent mini-ribs is sufficiently small to form regions of hi gh puncture resistance in the shoulder areas. This spacing distance is less tha n about 0.0225 inch (0.6 mm). The separator may also have a plurality of micro - ribs (40) located on the backside (14).