Patent ID: 6383681
Filing Date: 2002-05-07
Classification: H01M,Y02E

Abstract:
A sealing unit for electrolyte in electric batteries, said electric batteries including a container closed by a cover including an upstanding annular element formed with a planar upwardly facing annular surface circumscribing a hole formed in the cover for receiving a pole therethrough and forming an interspace therebetween, said sealing unit including a tubular ring nut secured in the interspace, at least a first sealing gasket cooperating with the ring nut, wherein said at least first sealing gasket is located between said pole, said cover and said ring nut forming three annular sealing surfaces for sealing the pole, the annular surface, and the ring nut respectively, and wherein said ring nut includes an intermediate annular conical surface and the pole hag a corresponding annular surface in opposition to the intermediate conical surface for engaging the ring nut and defining a degree of interference therebetween to assure a seal against blow-by of electrolyte from the battery.