Abstract: Electrode plate for an electric storage battery including a lug for electrically coupling the plate to other plates in the battery and an insulating collar tightly engaging the root of each plate lug. In a stack of plates, the several collars abut one another so as to separate the lugs from each other and may serve to form a mold for shaping a plate strap cast thereon.

Abstract: A relief/check valve for venting an electric storage battery comprising essentially an annular sealing member having an elastomeric skirt engaging the sloping exterior surface of a valve seat. The skirt flares outwardly from the seat in direct proportion to the pressure in the battery such as to prevent excessive build up of pressure in the battery when the gassing rate is high. The skirt quickly returns to a sealing condition when the pressure within the battery drops below the opening pressure of the valve.

Abstract: A "sealed" electric storage battery having a check/relief valve for controlling the venting and resealing pressures for the battery wherein the valve has at least two separate sealing members each capable of adjustment independently of the other for better control of both the venting and resealing pressure.

Abstract: The present invention comprehends a method of filling a mat-immobilized-electrolyte type, Pb-acid storage battery with electrolyte wherein a predetermined quantity of sulfuric acid sufficient to wet substantially the entire internal surface area of the mats and electrodes is metered into an empty cell container. Thereafter, an unformed cell element is inserted into the pre-filled container and therein progressively immersed into the acid at a sufficiently slow rate as to achieve substantial completion of the initial pickling reaction in the region of the electrode adjacent the front of electrolyte as it advances toward the top of the element. The immersion rate will preferably not be substantially greater than the rate at which the electrolyte wicks up into the mat so that the initial pickling reaction occurs essentially on either side of the wetted portion of the mat.

Abstract: Electrode plate for an electric storage battery including a lug for electrically coupling the plate to other plates in the battery and an insulating collar tightly engaging the root of each plate lug. In a stack of plates, the several collars abut one another so as to separate the lugs from each other and may serve to form a mold for shaping a plate strap cast thereon.

Abstract: A multi-cell battery container and method of making same wherein a tubular extrusion having opposing ridged and grooved walls is cut to length and divided into a plurality of compartments by partitions subsequently sealingly mated with the grooves.

Abstract: A multi-cell battery container and method of making same wherein a tubular extrusion having opposing ridged and grooved walls is cut to length and divided into a plurality of compartments by partitions subsequently sealingly mated with the grooves.

Abstract: A process for dimpling the surface of a pasted Pb-acid storage battery relocates active material from the centers of the active material pellets to the sides thereof more proximate the surrounding grid wires with a consequent increase in surface area of the plate and utilization efficiency of the active material.

Abstract: A pasted Pb-acid storage battery plate having a plurality of dimples formed in the surface(s) of the plate in the center of the grid openings defined by the grid wires. A dimpling process relocates active material from the centers of the active material pellets to the sides thereof more proximate the surrounding grid wires with a consequent increase in surface area and active material utilization efficiency.

Abstract: Battery grid-making stock expanded laterally outwardly from an unexpanded strip at the center of the stock and having two unexpanded strips at the lateral edges of the stock is filled with battery reactant and cut along a serpentine path transverse the length of the stock such as to segment the stock into a plurality of two-plate sets having lugs carved out of the unexpanded strips and projecting in the longitudinal direction of the stock. Thusly made plates have their lugs projecting from the sides of the plates and in alignment with the top and bottom borders thereof.