Closure for galvanic elements
AssigneeVarta Batterie Aktiengesellschaft
InventorsThomas Kuhl, Hans Sauer
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Abstract
A closure for a galvanic element, and particularly a cylindrical cell, is formed in substance of a cap-like or toroidal, resilient member, whose upstanding outer rim is segmented by slits into distinct flaps. These are therefore capable of acting resiliently in a radial direction and are capable of maintaining in the sealing region a steady sealing pressure between the cup and a plastic closure member. During closing of the cell through crimping, the flaps are supported from inside by a crimper support sleeve. In this way, the plastic of the closure body is plasticized during movement of the crimping tool toward the die.
Claims9
A closure arrangement for a galvanic element which includes a closure body of insulating material which is adapted to be pressed against a sealing surface by means of a resilient member wherein
- the resilient member takes the form of an enveloping surface which is provided with slits in the region in which it presses against the closure body,
- the portions of the member between the slits being free to move in a direction away from the closure body.
A closure arrangement for a galvanic element having a cylindrical cup and a cap for the open end of the cup, the closure arrangement including a closure body of insulating material positioned within and adjacent to the open end of the cup, the cap comprising a resilient member which takes the form of an enveloping surface pressing against the interior of the closure body and provided with slits, whereby the portions of the resilient member between the slits press the closure body against the adjacent portion of the cup.
Dependencies are inferred from the claim text.