Process for repairing defective battery seals
AssigneeESB Incorporated
InventorsPhilip Bernstein, James P. Coffey, Stanley M. Davis
Life of this patent
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Abstract
A process is described for repairing secondary batteries which have defective seals. The process of repair can be performed safely while the battery is in operation.
Claims9
A process for repairing while in service, a secondary battery which is comprised of a container, a cover, a cell element located in the container, the element having an anode, a cathode, a separator and electrolyte, and a sealant area comprised of a sealant space, a sealant located in the sealant space and areas of the container and cover near the sealant space, said sealant area being defective in that the sealant contains cracks and voids;
- the process comprising
- 1 preparing the sealant area;
- 2 positioning a repairant tape over the defective sealant, the tape comprising
- 95-60% by weight atactic polypropylene, and
- 5-40% by weight non-conductive filler;
- and
- 3 heating the repairant tape to a temperature sufficient to coat and repair the defective sealant area.
Dependencies are inferred from the claim text.