Tantalum capacitor case with increased volumetric efficiency

Details Tantalum capacitor case with increased volumetric efficiency Tantalum capacitor case with increased volumetric efficiency

2005-10-04

2005-10-04

Reichard, Dean A. (Department: 2831)

Electricity: electrical systems and devices

Electrolytic systems or devices

Solid electrolytic capacitor

C361S508000, C361S509000, C361S516000, C361S518000, C361S519000, C361S523000, C029S025030

Reexamination Certificate

active

06952339

ABSTRACT:
A capacitor and a method for assembling a capacitor. A capacitor is assembled from a case, which contains an anode that is electrically insulated from the case by isolators. A washer is placed above the anode. This washer transfers force from a capacitor cap to the isolators and anode, securing the anode in place. A cap is placed on the case. The cap may be shaped as a toroid with an outer and an inner annular wall. The annular walls may meet at the top and have an opening at the bottom creating a cap cavity in order to store electrolyte or other materials in the cap. The cap also supports a glass seal that insulates the lead tube and lead wire coming from the anode. Once assembled, the capacitor is filled with electrolyte. A weld extends around the cap to secure the cap to the case. The weld may be administered from the top of the capacitor.

REFERENCES:
patent: 4065636 (1977-12-01), Herczog
patent: 4479168 (1984-10-01), Green, Jr.
patent: 5825611 (1998-10-01), Pozdeev
patent: 5926362 (1999-07-01), Muffoletto et al.
patent: 6791821 (2004-09-01), Monnett

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