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 galvanic cell stack including a plurality of alternately interleaved positive and negative polarity plates each including a conductive lug projecting therefrom for electrically coupling to other plates of like polarity in the cell stack. Each set of like polarity plate lugs includes a polymer strip pressure molded in situ about the roots of the lugs.

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: An electric storage battery having a detachably secureable, one-piece molded carrying handle pivoted on a pair of mounting knobs integral with the battery container endwalls. A preferred handle comprises a rigid rib-rigidified gripping portion, flexible arm portion extending from the gripping portion to the knobs on the battery container. The arms engage the knobs via flat terminals which permit attachment/detachment to the battery by movement in a direction parallel to the container endwalls and comprise a wall lying inboard the arm and defining a pocket for receiving a head on the knob which wall includes a socket therein for receiving and retaining a stem portion of the knob. Projections at the entrance to the stem-retention zone of the socket define a narrow gate for admitting and retaining the stem in the stem-retention zone.

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.