Importance

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Abstract

A storage battery is constructed with a casing in which is contained an electrolyte and positive and negative plate means. The positive plate means includes a grid structure having a top bar and depending spines, active material, and braided or woven tubular bodies for locating the active material around the spines. A molded thermoplastic bonding element and a thermoplastic bonding material are combined in the positive plate in fused relationship to one another. The bonding element and the bonding material may, in one embodiment of the invention, be of the same chemical composition, and in another embodiment may be of differing chemical composition but fusible with one another within ranges of fusing or melting point temperatures which are common or close to one another. The thermoplastic bonding material may occur as constituent strands of the braided or woven tubular bodies and the molded thermoplastic bonding element is supported within the battery casing and occurs in fused relationship with respect to portions of said thermoplastic strands at points inside the tubular bodies. Portions of the tubular bodies are thus secured so as to resist formation of tube gaps due to swelling of active material in the tubular bodies.

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First Claim