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US 6,487,067 B1Granted
Sealing device for electrolytic capacitor and method
AssigneeCornell Dubilier Marketing, Inc.
InventorRandy James Holder
Life of this patent
Estimating the term…
Abstract
A flat pack electrolytic capacitor includes an aluminum end cap having an electrolyte fill hole that is sealed with a seal mechanism to preclude electrolyte leakage under normal operating conditions. The end cap is welded to an open-ended aluminum case in which a capacitor is inserted and the hole is sealed with an O ring and closed end pop rivet after the case is filled with electrolyte. The O ring is initially compressed during positioning of the rivet and further compressed when the closed end rivet is installed.
Claims5
An electrolytic capacitor comprising:
- a case;
- a capacitor fitted in said case;
- an end cap, having an electrolyte fill hole, secured at one end of said case;
- an electrolyte in said case;
- and
- a seal mechanism for sealing said case to prevent electrolyte leakage under normal operating conditions, said seal mechanism comprising an elastic O ring over said fill hole and a closed end blind rivet compressing and sealing said O ring to said end cap.
3 more elements
An electrolytic capacitor comprising:
- an open-ended aluminum case;
- a capacitor fitted in said aluminum case;
- an aluminum end cap, having an electrolyte fill hole, welded to said open ended aluminum case;
- an electrolyte in said case;
- an elastic O ring positioned about said fill hole;
- a closed end blind rivet extending through said O ring and said fill hole;
- and
- said closed end blind rivet compressing said O ring to form a seal for preventing electrolyte leakage from said case during normal operation of said capacitor.
5 more elements
Dependencies are inferred from the claim text.