Metal working – Electric condenser making – Solid dielectric type
Reexamination Certificate
2005-07-26
2005-07-26
Trinh, Minh (Department: 3729)
Metal working
Electric condenser making
Solid dielectric type
C029S592100, C029S025030, C029S025410, C361S302000, C361S306100
Reexamination Certificate
active
06920673
ABSTRACT:
A feedthrough device and brazing process for joining the constituent parts of the feedthrough while allowing a lead to pass therethrough in a nonconductive manner is described. The feedthrough comprises at least one lead, a ferrule defining a capacitor recess and an insulator recess. An insulator disposed in the insulator recess defines a passageway allowing the lead to pass therethrough. A capacitor disposed in the capacitor recess defines a capacitor passageway allowing the lead to pass therethrough. The capacitor comprises first and second sets of plates, the first set being conductively coupled to the ferrule and the second set being conductively coupled to the lead. The braze joints between the insulator and the lead and between the insulator and ferrule are formed first at a first temperature using an insulator braze material. Next, a capacitor braze material is used to braze the first set of capacitor plates to the lead and the second set of capacitor plates to the ferrule at a lower temperature than the brazing of the insulator braze materials.
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Allen Kevin M.
Gelb Allan S.
Shipman Thomas W.
Greatbatch-Hittman, Inc.
Nguyen Donghai D.
Scalise Michael F.
Trinh Minh
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