Abstract: A novel battery package is described wherein a sealing strip having a plurality of minute vent holes, one for each opening in the battery case, is retained in place by a plurality of disposable inserts which retain the strip in place and which seal the strip at least around the top surface of each of the battery case venting ports. Each of the inserts are equipped with a vent aperture a portion of which is surrounded on its top surface by raised indicia which extend to the periphery of the inserts. An adhesive strip is applied to engage each disposable insert to form a circuitous venting passage therebetween. The strip also engages the sealing strip, as well as the edges of the battery case in such a manner so that, upon activation, the entire battery package may be removed and disposed of by loosening one end of the sealing strip and pulling that strip up and across the top of the battery to expose each of the fill holes for activation.

Abstract: A maintenance free battery having explosion resistant characteristics for multi-celled battery containers. A battery cover has a main body with an elongate recess therein extending across its length. Within the first recess there are a plurality of vent well openings extending into the cells of the battery, and a plurality of vent plugs filling each opening which provide for the escape of gas and retard the escape of electrolyte. A recess plate fits snugly within the recess, the plate attaching to each of the vent plugs. Provisions are made to insure that the ends of the plate seal off the ends of the recess to prevent the leakage of gas between the plate ends and recess end walls.

Abstract: An explosion-proof vent barrel having a tubular body, an electrolyte splash baffle and an electrolyte drain funnel molded integrally with one another, there being a porous flame-arresting disc telescoped into the body. Three barrels are ganged on a common frame which protects the flame-arresting discs against dirt and grease. In one embodiment, the underside surface of the frame is formed with a shallow channel to permit positive venting of the gases which diffuse through the arrestor discs. In another embodiment, both the discs and barrels are maintained in closely spaced relation to the underside of the frame for defining a positive escape area about substantially the entire periphery of the disc. In each instance, the depth of the positive vent escape area does not exceed 0.015 inches so as to permit positive venting while retarding the entrance of a flame into the space between the disc and frame.