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Hermetically sealed galvanic cell having safety vent construction

  • US 4,486,514 A
  • Filed: 03/30/1984
  • Issued: 12/04/1984
  • Est. Priority Date: 03/30/1984
  • Status: Expired due to Fees
First Claim
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1. A galvanic cell comprised of a housing, said housing comprising a first portion having at least one aperture therethrough and extending about said at least one aperture, and a layer of glass or ceramic material disposed within said at least one aperture and bonded to said first portion of said housing so as to hermetically seal said at least one aperture;

  • characterized in that said first portion of said housing is inwardly depressed and flexible such that when the internal pressure of said cell exceeds a predetermined limit said inwardly depressed first portion of said housing will flex outward thereby fracturing the hermetic seal and providing a vent passage from the cell.

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