Patent ID: 11870041
Assignee: DARAMIC, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A stop/start flooded lead acid battery separator comprising;
a backweb having at least three zones of varying serrated, dimpled, and/or broken rib patterns on at least one side thereof;
wherein said ribs being defined by an angular orientation, relative to a machine (or vertical) direction of the battery separator and said angular orientation is an angle chosen from the group consisting of between greater than zero degrees and less than 180 degrees, and greater than 180 degrees and less than 360 degrees and wherein at least three of the zones have ribs with different angular orientation; and
wherein when placed into the stop/start flooded lead acid battery, the battery exhibits a difference in electrolyte density at a top portion of the separator and electrolyte density at a bottom portion of the separator of less than 50% after the battery has undergone from 30 to 90 start/stop cycles.