Hermetic seal for electrochemical cell

An electrochemical cell comprising a container closed with an hermetic seal, said seal comprising a first metal member separated from a second metal member and sealed thereto by a glass member, said first and second metal members being electrically insulated from each other by said glass member, characterized in that said second metal member is mechanically and electrically connected to a third metal member, chemically compatible with components of said cell, said third metal member being electrically connected to an electrode of said cell to provide electrical continuity between said electrode and said second metal member and said seal further including means for sealingly enclosing substantially all of the surfaces of said second metal member which are exposed within said cell container, with said first metal member having an eyelet configuration and said second metal member comprising a metal rod concentrically positioned within said eyelet, and wherein said third metal member comprises a metal cap for the end of said metal rod.

An electrochemical cell comprising a container closed with an hermetic seal, said seal comprising a first metal member separated from a second metal member and sealed thereto by a glass member, said first and second metal members being electrically insulated from each other by said glass member, characterized in that said second metal member is mechanically and electrically connected to a third metal member, chemically compatible with components of said cell, said third metal member being electrically connected to an electrode of said cell to provide electrical continuity between said electrode and said second metal member and said seal further including means for sealingly enclosing substantially all of the surfaces of said second metal member which are exposed within said cell container, and wherein said second metal member comprises a tube and wherein said third metal member fits within said tube and is mechanically and electrically connected to the interior of said tube.

An hermetic seal for use in an electrochemical cell comprising a metal eyelet, a metal rod concentrically positioned within said eyelet and sealed thereto by a glass member, said metal rod being chemically incompatible with components of said cell and being mechanically and electrically connected to a metal member, chemically compatible with components of said cell and exposed thereto, said seal further including sealing means for sealingly enclosing substantially all of said metal rod between said glass member and the connection of said rod to said metal member.