Electricity: conductors and insulators – Boxes and housings – Hermetic sealed envelope type
Reexamination Certificate
2006-12-05
2006-12-05
Patel, Dhiru R. (Department: 2831)
Electricity: conductors and insulators
Boxes and housings
Hermetic sealed envelope type
C174S050600, C174S050560, C174S050610, C361S302000, C029S025420
Reexamination Certificate
active
07145076
ABSTRACT:
A feedthrough terminal pin assembly includes an outer ferrule hermetically sealed through a braze joint to an insulator seated within the ferrule is described. The insulator is also hermetically brazed to at least one terminal pin. The terminal pin is provided with a braze retention structure such as an annular groove that prevents braze material from filleting past the groove. Similarly, either the ferrule or the insulator is provided with a retention structure such as an annular groove that prevents braze material spill out from the insulator/ferrule interface. In that manner, the braze retention structures keep braze material from accumulating in unwanted areas where it could adversely affect hermeticity as well as proper attachment of an EMI filter to the feedthrough assembly.
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Brendel Richard
Frysz Christine
Hussein Haytham
Knappen Scott
Naugler Robert
Greatbatch, Inc.
Patel Dhiru R.
Scalise Michael F.
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