US 11,942,655 B2
Battery separators with cross ribs and related methods
Eric H. Miller, Philpot, KY (US); and J. Kevin Whear, Utica, KY (US)
Assigned to Daramic, LLC, Charlotte, NC (US)
Filed by Daramic, LLC, Charlotte, NC (US)
Filed on Nov. 4, 2020, as Appl. No. 17/089,428.
Application 17/089,428 is a division of application No. 15/898,705, filed on Feb. 19, 2018, granted, now 10,833,306.
Application 15/898,705 is a continuation of application No. 12/904,371, filed on Oct. 14, 2010, granted, now 9,935,302.
Claims priority of provisional application 61/253,096, filed on Oct. 20, 2009.
Prior Publication US 2021/0057697 A1, Feb. 25, 2021
Int. Cl. H01M 50/44 (2021.01); H01M 50/417 (2021.01); H01M 50/449 (2021.01); H01M 50/463 (2021.01); H01M 10/06 (2006.01); H01M 50/466 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01)
CPC H01M 50/44 (2021.01) [H01M 50/417 (2021.01); H01M 50/449 (2021.01); H01M 50/463 (2021.01); H01M 10/06 (2013.01); H01M 50/466 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01); Y10T 29/49108 (2015.01)] 13 Claims
OG exemplary drawing
 
1. A separator for a lead acid battery comprising:
a porous membrane having a positive electrode face and a negative electrode face, wherein the positive electrode face and the negative electrode face are on opposite sides of the porous membrane;
a plurality of longitudinally extending ribs being disposed upon said positive electrode face; and
a plurality of transversely extending ribs being disposed upon said negative electrode face,
wherein the plurality of longitudinally extending ribs are perpendicular to the plurality of transversely extending ribs,
wherein said plurality of transversely extending ribs disposed upon said negative electrode face being adapted to be juxtaposed to a negative electrode, when the separator is placed within the lead acid battery, wherein the plurality of transversely extending ribs are discontinuous and include a plurality of longitudinally extending fissures, channels, recesses, or openings.