US3778683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-bonding capacitor case insulation
Assignee: General Electric Co
•
Filing: 1972-08-28
•
Granted: 1973-12-11
•
Expires: 1992-08-28
Abstract
Abstract An improved aluminum electrolytic capacitor is provided having an electrically insulating coating securely bonded to the casing. The coating comprises an epoxy resin preferably applied as a powder and cured to the empty casing at an elevated temperature to secure a proper bond without damage to the electrical components subsequently assembled therein.
Inventors
- 👤 J Buice
- 👤 D Schwenker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:36
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/10; H01G2/103; H01G9/00; H01G9/004; H01G9/08; H01G9/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
25 words
The capacitor of claim 1 wherein said epoxy coating is bonded to said casing at an elevated temperature prior to the completion of said capacitor.
Claim 2
Dependent Claim
24 words
The capacitor of claim 2 wherein said epoxy coating is applied as a powder to the empty casing and cured at an elevated temperature.
Claim 3
Dependent Claim
26 words
The capacitor of claim 1 wherein at least a portion of said insulated cover comprises a resilient gasket sealingly engaging said end edge of said casing.
References Cited (Backward Citations)
US2862155A
Cited
US3239595A
Cited
US3330999A
Cited
US3341752A
Cited
US3396315A
Cited
US3475659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |