The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 2005
Filed:
Aug. 02, 2002
Kevin M. Allen, Eldersburg, MD (US);
Thomas W. Shipman, Columbia, MD (US);
Allan S. Gelb, Orlando, FL (US);
Kevin M. Allen, Eldersburg, MD (US);
Thomas W. Shipman, Columbia, MD (US);
Allan S. Gelb, Orlando, FL (US);
Greatbatch-Hittman, Inc., Columbia, MD (US);
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.