IP Library Granted Patent US 7,325,285
Granted Patent B2
US 7,325,285 · App. 11/015,126 · Granted Feb 5, 2008

Method of processing high voltage capacitors

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Quick Facts
Patent No.
US 7,325,285
App. No.
11/015,126
Granted
Feb 5, 2008
Kind
B2
Abstract

A high voltage capacitor design is provided that provides improved performance. The high voltage capacitor includes a stack of mechanically bonded capacitor cells, which in one variant utilize a separator formed of two layers of paper. In one version, the high voltage capacitor may be used as a capacitative voltage divider.

Claims (12)

1. A method of processing high voltage capacitors, comprising the steps of:

providing at least one sealed high voltage capacitor housing, the housing having an interior and an exterior;

providing a fluid at the exterior of the sealed high voltage capacitor housing;

detecting, with a detector, whether the fluid has leaked through the sealed high voltage capacitor housing to the interior of the sealed high voltage capacitor housing; and

applying a vacuum to the interior of each sealed high voltage capacitor housing.

2. The method of claim 1 , wherein the fluid comprises a low molecular weight gas.

3. The method of claim 1 , wherein the detector is coupled to each sealed high voltage capacitor housing at a sealable port.

4. The method of claim 3 , wherein each sealed high voltage capacitor housing comprises at least one end cap.

5. The method of claim 4 , wherein the at least one end cap includes the sealable port.

6. The method of claim 5 , wherein the at least one end cap is coupled to the housing by a seal disposed therebetween.

7. The method of claim 1 , further comprising a step of placing each sealed high voltage capacitor housing within a chamber before performing a step of detecting.

8. The method of claim 7 , wherein the fluid is pressurized.

Assignments (6)
RELEASE OF SECURITY INTEREST Recorded May 24, 2019
From: EAST WEST BANK
To: MAXWELL TECHNOLOGIES, INC.
Reel/Frame 051441/0005 →
RELEASE OF SECURITY INTEREST Recorded May 16, 2019
From: EAST WEST BANK
To: MAXWELL TECHNOLOGIES, INC.
Reel/Frame 049216/0304 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 12, 2018
From: MAXWELL TECHNOLOGIES, INC,
To: MAXWELL TECHNOLOGIES, SA
Reel/Frame 047754/0627 →
SECURITY INTEREST Recorded Jul 6, 2015
From: MAXWELL TECHNOLOGIES, INC.
To: EAST WEST BANK
Reel/Frame 036064/0636 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 28, 2006
From: BUILLARD, MR JOSEPH; PASQUIER, MR ERIC
To: MAXWELL TECHNOLOGIES, INC.
Reel/Frame 017229/0897 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 17, 2004
From: BULLIARD, JOSEPH; PASQUIER, ERIC
To: MAXWELL TECHNOLOGIES, INC.
Reel/Frame 016112/0813 →