Exide Corporation

Fred F Feres

Carl J Anderson

Gerald D Hudack

A flooded lead acid battery includes a casing enclosing a plurality of cells having liquid electrolyte therein and a cover incorporating negative and positive terminals and having a plurality of vent holes. The vent holes are covered by at least one closure having a vent cavity therein, and a relatively rigid porous polytetrofluorethylene disc having hydrophobic properties is sealed within the vent cavity.

Flooded lead acid battery with roll-over capability

In a battery configuration including a casing having bottom, side and top surfaces, the top surface having a plurality of cell openings therein, an improved flowpath is provided for liquid electrolyte when the battery is tilted onto any one of its side surfaces. The flowpath includes a cover chamber for each cell opening defined by a substantially rectangular peripheral wall surrounding the cell opening; a cylindrical wall surrounding and substantially concentric with the cell opening and located within the substantially rectangular wall, the cylindrical wall interrupted by a relatively small circumferential gap, and a wall extending between the cylindrical wall and an adjacent side of the peripheral wall, the wall tangential to the cylindrical wall and adjacent the gap.

Flooded lead acid battery with tilt-over capability

A battery grid plate composition comprising by percent weight:

Positive grid alloys

A multiple vent plug assembly for vent ports of an electrical storage battery, the assembly includes a gang vent insert having a base wall and an upstanding peripheral rim defining a pair of side walls and a pair of end walls; an overcap including an inner rib for engagement with the upstanding peripheral rim of the gang vent insert; the insert including first and second parallel partitions extending between the pair of side walls to thereby divide the insert into three vent chambers including end chambers on either side of a center chamber, each chamber having a hollow vent barrel extending downwardly from the base wall and terminating at a drain hole. Third and fourth partitions extend partially between the pair of side walls and a fifth partition extends between and perpendicular to the third and fourth partitions to create, in cooperation with a portion of one of the side walls, a frit area for supporting a flame arrestor of glass frit material, the frit area having a slot therein which opens to atmosphere. The first, second, third and fourth partitions are formed with passageway openings arranged to permit air at atmospheric pressure to enter the center chamber from the end chambers and from the frit area, to thereby create an air lock preventing battery electrolyte from escaping through the drain holes and the frit area vent aperture in the event the battery is tilted to a position where battery electrolyte is at a level above the battery vent ports.

Battery gang vent system

A water by-passing, submersible, flame retardent vent plug is adapted for use in storage batteries of the type containing liquid electrolyte. The plug has inlet and outlet slots and a hollow portion providing a gas communication path. A porous flame arrester is positioned in the path. A circular raised seat is positioned in the path between the flame arrester and the outlet slots to allow water from the battery's exterior which enters the outlet slots, to exit the vent plug without entering the battery.

Water by-passing, flame retardant battery vent plug

A submersible flame-retardant vent plug is adapted for use in storage batteries of the type containing liquid electrolyte. The plug has inlet and outlet slots and a hollow portion providing a gas communication path. A porous flame arrester is positioned in the path. A check valve is positioned in the path between the flame arrester and the outlet slots and is adapted to be opened by gas pressure from the battery's interior and to be closed by water pressure from the battery's exterior.

Growing community of inventors

Rochester Hills, MI, United States of America

Fred F Feres